added documentation for rbcs-servlet

switched Docker images to serial GC

.gitea/workflows/build.yaml

@@ -31,7 +31,7 @@ jobs:
           username: woggioni
           password: ${{ secrets.PUBLISHER_TOKEN }}
       -
-        name: Build gbcs Docker image
+        name: Build rbcs Docker image
         uses: docker/build-push-action@v5.3.0
         with:
           context: "docker/build/docker"
@@ -39,12 +39,12 @@ jobs:
           push: true
           pull: true
           tags: |
-            gitea.woggioni.net/woggioni/gbcs:latest
+            gitea.woggioni.net/woggioni/rbcs:latest
-            gitea.woggioni.net/woggioni/gbcs:${{ steps.retrieve-version.outputs.VERSION }}
+            gitea.woggioni.net/woggioni/rbcs:${{ steps.retrieve-version.outputs.VERSION }}
           target: release
-          cache-from: type=registry,ref=gitea.woggioni.net/woggioni/gbcs:buildx
+          cache-from: type=registry,ref=gitea.woggioni.net/woggioni/rbcs:buildx
       -
-        name: Build gbcs memcached Docker image
+        name: Build rbcs memcache Docker image
         uses: docker/build-push-action@v5.3.0
         with:
           context: "docker/build/docker"
@@ -52,11 +52,11 @@ jobs:
           push: true
           pull: true
           tags: |
-            gitea.woggioni.net/woggioni/gbcs:memcached
+            gitea.woggioni.net/woggioni/rbcs:memcache
-            gitea.woggioni.net/woggioni/gbcs:memcached-${{ steps.retrieve-version.outputs.VERSION }}
+            gitea.woggioni.net/woggioni/rbcs:memcache-${{ steps.retrieve-version.outputs.VERSION }}
-          target: release-memcached
+          target: release-memcache
-          cache-from: type=registry,ref=gitea.woggioni.net/woggioni/gbcs:buildx
+          cache-from: type=registry,ref=gitea.woggioni.net/woggioni/rbcs:buildx
-          cache-to: type=registry,mode=max,compression=zstd,image-manifest=true,oci-mediatypes=true,ref=gitea.woggioni.net/woggioni/gbcs:buildx
+          cache-to: type=registry,mode=max,compression=zstd,image-manifest=true,oci-mediatypes=true,ref=gitea.woggioni.net/woggioni/rbcs:buildx
       - name: Publish artifacts
         env:
           PUBLISHER_TOKEN: ${{ secrets.PUBLISHER_TOKEN }}

.gitignore

@@ -4,4 +4,4 @@
 # Ignore Gradle build output directory
 build
 
-gbcs-cli/native-image/*.json
+rbcs-cli/native-image/*.json

build.gradle

@@ -15,7 +15,7 @@ allprojects { subproject ->
             version = project.currentTag.map { it[0] }.get()
         } else {
             version = project.gitRevision.map { gitRevision ->
-                "${getProperty('gbcs.version')}.${gitRevision[0..10]}"
+                "${getProperty('rbcs.version')}.${gitRevision[0..10]}"
             }.get()
         }
 
@@ -46,6 +46,12 @@ allprojects { subproject ->
             }
         }
 
+        dependencies {
+            testImplementation catalog.junit.jupiter.api
+            testImplementation catalog.junit.jupiter.params
+            testRuntimeOnly catalog.junit.jupiter.engine
+        }
+
         test {
             useJUnitPlatform()
         }

docker/Dockerfile

@@ -4,13 +4,13 @@ USER luser
 WORKDIR /home/luser
 
 FROM base-release AS release
-ADD gbcs-cli-envelope-*.jar gbcs.jar
+ADD rbcs-cli-envelope-*.jar rbcs.jar
-ENTRYPOINT ["java", "-jar", "/home/luser/gbcs.jar", "server"]
+ENTRYPOINT ["java", "-XX:+UseSerialGC", "-XX:GCTimeRatio=24", "-jar", "/home/luser/rbcs.jar", "server"]
 
-FROM base-release AS release-memcached
+FROM base-release AS release-memcache
-ADD --chown=luser:luser gbcs-cli-envelope-*.jar gbcs.jar
+ADD --chown=luser:luser rbcs-cli-envelope-*.jar rbcs.jar
 RUN mkdir plugins
 WORKDIR /home/luser/plugins
-RUN --mount=type=bind,source=.,target=/build/distributions tar -xf /build/distributions/gbcs-server-memcached*.tar
+RUN --mount=type=bind,source=.,target=/build/distributions tar -xf /build/distributions/rbcs-server-memcache*.tar
 WORKDIR /home/luser
-ENTRYPOINT ["java", "-jar", "/home/luser/gbcs.jar", "server"]
+ENTRYPOINT ["java", "-XX:+UseSerialGC", "-XX:GCTimeRatio=24", "-jar", "/home/luser/rbcs.jar", "server"]

docker/build.gradle

@@ -18,8 +18,8 @@ configurations {
 }
 
 dependencies {
-    docker project(path: ':gbcs-cli', configuration: 'release')
+    docker project(path: ':rbcs-cli', configuration: 'release')
-    docker project(path: ':gbcs-server-memcached', configuration: 'release')
+    docker project(path: ':rbcs-server-memcache', configuration: 'release')
 }
 
 Provider<Task> cleanTaskProvider = tasks.named(BasePlugin.CLEAN_TASK_NAME) {}
@@ -35,33 +35,33 @@ Provider<Copy> prepareDockerBuild = tasks.register('prepareDockerBuild', Copy) {
 Provider<DockerBuildImage> dockerBuild = tasks.register('dockerBuildImage', DockerBuildImage) {
     group = 'docker'
     dependsOn prepareDockerBuild
-    images.add('gitea.woggioni.net/woggioni/gbcs:latest')
+    images.add('gitea.woggioni.net/woggioni/rbcs:latest')
-    images.add("gitea.woggioni.net/woggioni/gbcs:${version}")
+    images.add("gitea.woggioni.net/woggioni/rbcs:${version}")
 }
 
 Provider<DockerTagImage> dockerTag = tasks.register('dockerTagImage', DockerTagImage) {
     group = 'docker'
-    repository = 'gitea.woggioni.net/woggioni/gbcs'
+    repository = 'gitea.woggioni.net/woggioni/rbcs'
-    imageId = 'gitea.woggioni.net/woggioni/gbcs:latest'
+    imageId = 'gitea.woggioni.net/woggioni/rbcs:latest'
     tag = version
 }
 
-Provider<DockerTagImage> dockerTagMemcached = tasks.register('dockerTagMemcachedImage', DockerTagImage) {
+Provider<DockerTagImage> dockerTagMemcache = tasks.register('dockerTagMemcacheImage', DockerTagImage) {
     group = 'docker'
-    repository = 'gitea.woggioni.net/woggioni/gbcs'
+    repository = 'gitea.woggioni.net/woggioni/rbcs'
-    imageId = 'gitea.woggioni.net/woggioni/gbcs:memcached'
+    imageId = 'gitea.woggioni.net/woggioni/rbcs:memcache'
-    tag = "${version}-memcached"
+    tag = "${version}-memcache"
 }
 
 Provider<DockerPushImage> dockerPush = tasks.register('dockerPushImage', DockerPushImage) {
     group = 'docker'
-    dependsOn dockerTag, dockerTagMemcached
+    dependsOn dockerTag, dockerTagMemcache
     registryCredentials {
         url = getProperty('docker.registry.url')
         username = 'woggioni'
         password = System.getenv().get("PUBLISHER_TOKEN")
     }
-    images = [dockerTag.flatMap{ it.tag }, dockerTagMemcached.flatMap{ it.tag }]
+    images = [dockerTag.flatMap{ it.tag }, dockerTagMemcache.flatMap{ it.tag }]
 }
 
 

gbcs-api/src/main/java/module-info.java

@@ -1,6 +0,0 @@
-module net.woggioni.gbcs.api {
-    requires static lombok;
-    requires java.xml;
-    exports net.woggioni.gbcs.api;
-    exports net.woggioni.gbcs.api.exception;
-}

gbcs-api/src/main/java/net/woggioni/gbcs/api/Cache.java

@@ -1,12 +0,0 @@
-package net.woggioni.gbcs.api;
-
-import net.woggioni.gbcs.api.exception.ContentTooLargeException;
-
-import java.nio.channels.ReadableByteChannel;
-
-
-public interface Cache extends AutoCloseable {
-    ReadableByteChannel get(String key);
-
-    void put(String key, byte[] content) throws ContentTooLargeException;
-}

gbcs-api/src/main/java/net/woggioni/gbcs/api/exception/GbcsException.java

@@ -1,7 +0,0 @@
-package net.woggioni.gbcs.api.exception;
-
-public class GbcsException extends RuntimeException {
-    public GbcsException(String message, Throwable cause) {
-        super(message, cause);
-    }
-}

gbcs-cli/src/main/java/module-info.java

@@ -1,17 +0,0 @@
-module net.woggioni.gbcs.cli {
-    requires org.slf4j;
-    requires net.woggioni.gbcs.server;
-    requires info.picocli;
-    requires net.woggioni.gbcs.common;
-    requires net.woggioni.gbcs.client;
-    requires kotlin.stdlib;
-    requires net.woggioni.jwo;
-    requires net.woggioni.gbcs.api;
-
-    exports net.woggioni.gbcs.cli.impl.converters to info.picocli;
-    opens net.woggioni.gbcs.cli.impl.commands to info.picocli;
-    opens net.woggioni.gbcs.cli.impl to info.picocli;
-    opens net.woggioni.gbcs.cli to info.picocli, net.woggioni.gbcs.common;
-
-    exports net.woggioni.gbcs.cli;
-}

gbcs-cli/src/main/kotlin/net/woggioni/gbcs/cli/GradleBuildCacheServerCli.kt

@@ -1,64 +0,0 @@
-package net.woggioni.gbcs.cli
-
-import net.woggioni.gbcs.common.GbcsUrlStreamHandlerFactory
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.cli.impl.AbstractVersionProvider
-import net.woggioni.gbcs.cli.impl.GbcsCommand
-import net.woggioni.gbcs.cli.impl.commands.BenchmarkCommand
-import net.woggioni.gbcs.cli.impl.commands.ClientCommand
-import net.woggioni.gbcs.cli.impl.commands.GetCommand
-import net.woggioni.gbcs.cli.impl.commands.PasswordHashCommand
-import net.woggioni.gbcs.cli.impl.commands.PutCommand
-import net.woggioni.gbcs.cli.impl.commands.ServerCommand
-import net.woggioni.jwo.Application
-import picocli.CommandLine
-import picocli.CommandLine.Model.CommandSpec
-import java.net.URI
-
-
-@CommandLine.Command(
-    name = "gbcs", versionProvider = GradleBuildCacheServerCli.VersionProvider::class
-)
-class GradleBuildCacheServerCli : GbcsCommand() {
-
-    class VersionProvider : AbstractVersionProvider()
-    companion object {
-        @JvmStatic
-        fun main(vararg args: String) {
-            Thread.currentThread().contextClassLoader = GradleBuildCacheServerCli::class.java.classLoader
-            GbcsUrlStreamHandlerFactory.install()
-            val log = contextLogger()
-            val app = Application.builder("gbcs")
-                .configurationDirectoryEnvVar("GBCS_CONFIGURATION_DIR")
-                .configurationDirectoryPropertyKey("net.woggioni.gbcs.conf.dir")
-                .build()
-            val gbcsCli = GradleBuildCacheServerCli()
-            val commandLine = CommandLine(gbcsCli)
-            commandLine.setExecutionExceptionHandler { ex, cl, parseResult ->
-                log.error(ex.message, ex)
-                CommandLine.ExitCode.SOFTWARE
-            }
-            commandLine.addSubcommand(ServerCommand(app))
-            commandLine.addSubcommand(PasswordHashCommand())
-            commandLine.addSubcommand(
-                CommandLine(ClientCommand(app)).apply {
-                    addSubcommand(BenchmarkCommand())
-                    addSubcommand(PutCommand())
-                    addSubcommand(GetCommand())
-                })
-            System.exit(commandLine.execute(*args))
-        }
-    }
-
-    @CommandLine.Option(names = ["-V", "--version"], versionHelp = true)
-    var versionHelp = false
-        private set
-
-    @CommandLine.Spec
-    private lateinit var spec: CommandSpec
-
-
-    override fun run() {
-        spec.commandLine().usage(System.out);
-    }
-}

gbcs-cli/src/main/kotlin/net/woggioni/gbcs/cli/impl/commands/BenchmarkCommand.kt

@@ -1,134 +0,0 @@
-package net.woggioni.gbcs.cli.impl.commands
-
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.common.error
-import net.woggioni.gbcs.common.info
-import net.woggioni.gbcs.cli.impl.GbcsCommand
-import net.woggioni.gbcs.client.GradleBuildCacheClient
-import net.woggioni.jwo.JWO
-import picocli.CommandLine
-import java.security.SecureRandom
-import java.time.Duration
-import java.time.Instant
-import java.util.Base64
-import java.util.concurrent.ExecutionException
-import java.util.concurrent.Future
-import java.util.concurrent.LinkedBlockingQueue
-import java.util.concurrent.atomic.AtomicLong
-import kotlin.random.Random
-
-@CommandLine.Command(
-    name = "benchmark",
-    description = ["Run a load test against the server"],
-    showDefaultValues = true
-)
-class BenchmarkCommand : GbcsCommand() {
-    private val log = contextLogger()
-
-    @CommandLine.Spec
-    private lateinit var spec: CommandLine.Model.CommandSpec
-
-    @CommandLine.Option(
-        names = ["-e", "--entries"],
-        description = ["Total number of elements to be added to the cache"],
-        paramLabel = "NUMBER_OF_ENTRIES"
-    )
-    private var numberOfEntries = 1000
-
-    override fun run() {
-        val clientCommand = spec.parent().userObject() as ClientCommand
-        val profile = clientCommand.profileName.let { profileName ->
-            clientCommand.configuration.profiles[profileName]
-                ?: throw IllegalArgumentException("Profile $profileName does not exist in configuration")
-        }
-        val client = GradleBuildCacheClient(profile)
-
-        val entryGenerator = sequence {
-            val random = Random(SecureRandom.getInstance("NativePRNGNonBlocking").nextLong())
-            while (true) {
-                val key = JWO.bytesToHex(random.nextBytes(16))
-                val content = random.nextInt().toByte()
-                val value = ByteArray(0x1000, { _ -> content })
-                yield(key to value)
-            }
-        }
-
-        val entries = let {
-            val completionQueue = LinkedBlockingQueue<Future<Pair<String, ByteArray>>>(numberOfEntries)
-            val start = Instant.now()
-            val totalElapsedTime = AtomicLong(0)
-            entryGenerator.take(numberOfEntries).forEach { entry ->
-                val requestStart = System.nanoTime()
-                val future = client.put(entry.first, entry.second).thenApply { entry }
-                future.whenComplete { _, _ ->
-                    totalElapsedTime.addAndGet((System.nanoTime() - requestStart))
-                    completionQueue.put(future)
-                }
-            }
-
-            val inserted = sequence<Pair<String, ByteArray>> {
-                var completionCounter = 0
-                while (completionCounter < numberOfEntries) {
-                    val future = completionQueue.take()
-                    try {
-                        yield(future.get())
-                    } catch (ee: ExecutionException) {
-                        val cause = ee.cause ?: ee
-                        log.error(cause.message, cause)
-                    }
-                    completionCounter += 1
-                }
-            }.toList()
-            val end = Instant.now()
-            log.info {
-                val elapsed = Duration.between(start, end).toMillis()
-                "Insertion rate: ${numberOfEntries.toDouble() / elapsed * 1000} ops/s"
-            }
-            log.info {
-                "Average time per insertion: ${totalElapsedTime.get() / numberOfEntries.toDouble() * 1000} ms"
-            }
-            inserted
-        }
-        log.info {
-            "Inserted ${entries.size} entries"
-        }
-        if (entries.isNotEmpty()) {
-            val completionQueue = LinkedBlockingQueue<Future<Unit>>(entries.size)
-            val start = Instant.now()
-            val totalElapsedTime = AtomicLong(0)
-            entries.forEach { entry ->
-                val requestStart = System.nanoTime()
-                val future = client.get(entry.first).thenApply {
-                    totalElapsedTime.addAndGet((System.nanoTime() - requestStart))
-                    if (it == null) {
-                        log.error {
-                            "Missing entry for key '${entry.first}'"
-                        }
-                    } else if (!entry.second.contentEquals(it)) {
-                        log.error {
-                            "Retrieved a value different from what was inserted for key '${entry.first}'"
-                        }
-                    }
-                }
-                future.whenComplete { _, _ ->
-                    completionQueue.put(future)
-                }
-            }
-            var completionCounter = 0
-            while (completionCounter < entries.size) {
-                completionQueue.take()
-                completionCounter += 1
-            }
-            val end = Instant.now()
-            log.info {
-                val elapsed = Duration.between(start, end).toMillis()
-                "Retrieval rate: ${entries.size.toDouble() / elapsed * 1000} ops/s"
-            }
-            log.info {
-                "Average time per retrieval: ${totalElapsedTime.get() / numberOfEntries.toDouble() * 1e6} ms"
-            }
-        } else {
-            log.error("Skipping retrieval benchmark as it was not possible to insert any entry in the cache")
-        }
-    }
-}

gbcs-cli/src/main/kotlin/net/woggioni/gbcs/cli/impl/commands/PutCommand.kt

@@ -1,48 +0,0 @@
-package net.woggioni.gbcs.cli.impl.commands
-
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.cli.impl.GbcsCommand
-import net.woggioni.gbcs.cli.impl.converters.InputStreamConverter
-import net.woggioni.gbcs.client.GradleBuildCacheClient
-import picocli.CommandLine
-import java.io.InputStream
-
-@CommandLine.Command(
-    name = "put",
-    description = ["Add or replace a value to the cache with the specified key"],
-    showDefaultValues = true
-)
-class PutCommand : GbcsCommand() {
-    private val log = contextLogger()
-
-    @CommandLine.Spec
-    private lateinit var spec: CommandLine.Model.CommandSpec
-
-    @CommandLine.Option(
-        names = ["-k", "--key"],
-        description = ["The key for the new value"],
-        paramLabel = "KEY"
-    )
-    private var key : String = ""
-
-    @CommandLine.Option(
-        names = ["-v", "--value"],
-        description = ["Path to a file containing the value to be added (defaults to stdin)"],
-        paramLabel = "VALUE_FILE",
-        converter = [InputStreamConverter::class]
-    )
-    private var value : InputStream = System.`in`
-
-    override fun run() {
-        val clientCommand = spec.parent().userObject() as ClientCommand
-        val profile = clientCommand.profileName.let { profileName ->
-            clientCommand.configuration.profiles[profileName]
-                ?: throw IllegalArgumentException("Profile $profileName does not exist in configuration")
-        }
-        GradleBuildCacheClient(profile).use { client ->
-            value.use {
-                client.put(key, it.readAllBytes())
-            }.get()
-        }
-    }
-}

gbcs-cli/src/main/kotlin/net/woggioni/gbcs/cli/impl/commands/ServerCommand.kt

@@ -1,67 +0,0 @@
-package net.woggioni.gbcs.cli.impl.commands
-
-import net.woggioni.gbcs.server.GradleBuildCacheServer
-import net.woggioni.gbcs.server.GradleBuildCacheServer.Companion.DEFAULT_CONFIGURATION_URL
-import net.woggioni.gbcs.api.Configuration
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.common.debug
-import net.woggioni.gbcs.common.info
-import net.woggioni.gbcs.cli.impl.GbcsCommand
-import net.woggioni.jwo.Application
-import net.woggioni.jwo.JWO
-import picocli.CommandLine
-import java.io.ByteArrayOutputStream
-import java.nio.file.Files
-import java.nio.file.Path
-
-@CommandLine.Command(
-    name = "server",
-    description = ["GBCS server"],
-    showDefaultValues = true
-)
-class ServerCommand(app : Application) : GbcsCommand() {
-
-    private val log = contextLogger()
-
-    private fun createDefaultConfigurationFile(configurationFile: Path) {
-        log.info {
-            "Creating default configuration file at '$configurationFile'"
-        }
-        val defaultConfigurationFileResource = DEFAULT_CONFIGURATION_URL
-        Files.newOutputStream(configurationFile).use { outputStream ->
-            defaultConfigurationFileResource.openStream().use { inputStream ->
-                JWO.copy(inputStream, outputStream)
-            }
-        }
-    }
-
-    @CommandLine.Option(
-        names = ["-c", "--config-file"],
-        description = ["Read the application configuration from this file"],
-        paramLabel = "CONFIG_FILE"
-    )
-    private var configurationFile: Path = findConfigurationFile(app, "gbcs-server.xml")
-
-    val configuration : Configuration by lazy {
-        GradleBuildCacheServer.loadConfiguration(configurationFile)
-    }
-
-    override fun run() {
-        if (!Files.exists(configurationFile)) {
-            Files.createDirectories(configurationFile.parent)
-            createDefaultConfigurationFile(configurationFile)
-        }
-
-        val configuration = GradleBuildCacheServer.loadConfiguration(configurationFile)
-        log.debug {
-            ByteArrayOutputStream().also {
-                GradleBuildCacheServer.dumpConfiguration(configuration, it)
-            }.let {
-                "Server configuration:\n${String(it.toByteArray())}"
-            }
-        }
-        val server = GradleBuildCacheServer(configuration)
-        server.run().use {
-        }
-    }
-}

gbcs-client/build.gradle

@@ -1,15 +0,0 @@
-plugins {
-    id 'java-library'
-    alias catalog.plugins.kotlin.jvm
-}
-
-dependencies {
-    implementation project(':gbcs-api')
-    implementation project(':gbcs-common')
-    implementation catalog.picocli
-    implementation catalog.slf4j.api
-    implementation catalog.netty.buffer
-    implementation catalog.netty.codec.http
-}
-
-

gbcs-client/src/main/kotlin/net/woggioni/gbcs/client/Client.kt

@@ -1,270 +0,0 @@
-package net.woggioni.gbcs.client
-
-import io.netty.bootstrap.Bootstrap
-import io.netty.buffer.ByteBuf
-import io.netty.buffer.Unpooled
-import io.netty.channel.Channel
-import io.netty.channel.ChannelHandlerContext
-import io.netty.channel.ChannelOption
-import io.netty.channel.ChannelPipeline
-import io.netty.channel.SimpleChannelInboundHandler
-import io.netty.channel.nio.NioEventLoopGroup
-import io.netty.channel.pool.AbstractChannelPoolHandler
-import io.netty.channel.pool.ChannelPool
-import io.netty.channel.pool.FixedChannelPool
-import io.netty.channel.socket.nio.NioSocketChannel
-import io.netty.handler.codec.DecoderException
-import io.netty.handler.codec.http.DefaultFullHttpRequest
-import io.netty.handler.codec.http.FullHttpRequest
-import io.netty.handler.codec.http.FullHttpResponse
-import io.netty.handler.codec.http.HttpClientCodec
-import io.netty.handler.codec.http.HttpContentDecompressor
-import io.netty.handler.codec.http.HttpHeaderNames
-import io.netty.handler.codec.http.HttpHeaderValues
-import io.netty.handler.codec.http.HttpMethod
-import io.netty.handler.codec.http.HttpObjectAggregator
-import io.netty.handler.codec.http.HttpResponseStatus
-import io.netty.handler.codec.http.HttpVersion
-import io.netty.handler.ssl.SslContext
-import io.netty.handler.ssl.SslContextBuilder
-import io.netty.handler.stream.ChunkedWriteHandler
-import io.netty.util.concurrent.Future
-import io.netty.util.concurrent.GenericFutureListener
-import net.woggioni.gbcs.client.impl.Parser
-import net.woggioni.gbcs.common.Xml
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.common.debug
-import net.woggioni.gbcs.common.trace
-import java.net.InetSocketAddress
-import java.net.URI
-import java.nio.file.Files
-import java.nio.file.Path
-import java.security.PrivateKey
-import java.security.cert.X509Certificate
-import java.time.Duration
-import java.util.Base64
-import java.util.concurrent.CompletableFuture
-import java.util.concurrent.atomic.AtomicInteger
-import io.netty.util.concurrent.Future as NettyFuture
-
-
-class GradleBuildCacheClient(private val profile: Configuration.Profile) : AutoCloseable {
-    private val group: NioEventLoopGroup
-    private var sslContext: SslContext
-    private val log = contextLogger()
-    private val pool: ChannelPool
-
-    data class Configuration(
-        val profiles: Map<String, Profile>
-    ) {
-        sealed class Authentication {
-            data class TlsClientAuthenticationCredentials(
-                val key: PrivateKey,
-                val certificateChain: Array<X509Certificate>
-            ) : Authentication()
-
-            data class BasicAuthenticationCredentials(val username: String, val password: String) : Authentication()
-        }
-
-        data class Profile(
-            val serverURI: URI,
-            val authentication: Authentication?,
-            val connectionTimeout : Duration?,
-            val maxConnections : Int
-        )
-
-        companion object {
-            fun parse(path: Path): Configuration {
-                return Files.newInputStream(path).use {
-                    Xml.parseXml(path.toUri().toURL(), it)
-                }.let(Parser::parse)
-            }
-        }
-    }
-
-    init {
-        group = NioEventLoopGroup()
-        sslContext = SslContextBuilder.forClient().also { builder ->
-            (profile.authentication as? Configuration.Authentication.TlsClientAuthenticationCredentials)?.let { tlsClientAuthenticationCredentials ->
-                builder.keyManager(
-                    tlsClientAuthenticationCredentials.key,
-                    *tlsClientAuthenticationCredentials.certificateChain
-                )
-            }
-        }.build()
-
-        val (scheme, host, port) = profile.serverURI.run {
-            Triple(
-                if (scheme == null) "http" else profile.serverURI.scheme,
-                host,
-                port.takeIf { it > 0 } ?: if ("https" == scheme.lowercase()) 443 else 80
-            )
-        }
-
-        val bootstrap = Bootstrap().apply {
-            group(group)
-            channel(NioSocketChannel::class.java)
-            option(ChannelOption.TCP_NODELAY, true)
-            option(ChannelOption.SO_KEEPALIVE, true)
-            remoteAddress(InetSocketAddress(host, port))
-            profile.connectionTimeout?.let {
-                option(ChannelOption.CONNECT_TIMEOUT_MILLIS, it.toMillis().toInt())
-            }
-        }
-        val channelPoolHandler = object : AbstractChannelPoolHandler() {
-
-            @Volatile
-            private var connectionCount = AtomicInteger()
-
-            @Volatile
-            private var leaseCount = AtomicInteger()
-
-            override fun channelReleased(ch: Channel) {
-                val activeLeases = leaseCount.decrementAndGet()
-                log.trace {
-                    "Released channel ${ch.id().asShortText()}, number of active leases: $activeLeases"
-                }
-            }
-
-            override fun channelAcquired(ch: Channel) {
-                val activeLeases = leaseCount.getAndIncrement()
-                log.trace {
-                    "Acquired channel ${ch.id().asShortText()}, number of active leases: $activeLeases"
-                }
-            }
-
-            override fun channelCreated(ch: Channel) {
-                val connectionId = connectionCount.getAndIncrement()
-                log.debug {
-                    "Created connection $connectionId, total number of active connections: $connectionId"
-                }
-                ch.closeFuture().addListener {
-                    val activeConnections = connectionCount.decrementAndGet()
-                    log.debug {
-                        "Closed connection $connectionId, total number of active connections: $activeConnections"
-                    }
-                }
-                val pipeline: ChannelPipeline = ch.pipeline()
-
-                // Add SSL handler if needed
-                if ("https".equals(scheme, ignoreCase = true)) {
-                    pipeline.addLast("ssl", sslContext.newHandler(ch.alloc(), host, port))
-                }
-
-                // HTTP handlers
-                pipeline.addLast("codec", HttpClientCodec())
-                pipeline.addLast("decompressor", HttpContentDecompressor())
-                pipeline.addLast("aggregator", HttpObjectAggregator(134217728))
-                pipeline.addLast("chunked", ChunkedWriteHandler())
-            }
-        }
-        pool = FixedChannelPool(bootstrap, channelPoolHandler, profile.maxConnections)
-    }
-
-    fun get(key: String): CompletableFuture<ByteArray?> {
-        return sendRequest(profile.serverURI.resolve(key), HttpMethod.GET, null)
-            .thenApply {
-                val status = it.status()
-                if (it.status() == HttpResponseStatus.NOT_FOUND) {
-                    null
-                } else if (it.status() != HttpResponseStatus.OK) {
-                    throw HttpException(status)
-                } else {
-                    it.content()
-                }
-            }.thenApply { maybeByteBuf ->
-                maybeByteBuf?.let {
-                    val result = ByteArray(it.readableBytes())
-                    it.getBytes(0, result)
-                    result
-                }
-            }
-    }
-
-    fun put(key: String, content: ByteArray): CompletableFuture<Unit> {
-        return sendRequest(profile.serverURI.resolve(key), HttpMethod.PUT, content).thenApply {
-            val status = it.status()
-            if (it.status() != HttpResponseStatus.CREATED && it.status() != HttpResponseStatus.OK) {
-                throw HttpException(status)
-            }
-        }
-    }
-
-    private fun sendRequest(uri: URI, method: HttpMethod, body: ByteArray?): CompletableFuture<FullHttpResponse> {
-        val responseFuture = CompletableFuture<FullHttpResponse>()
-        // Custom handler for processing responses
-        pool.acquire().addListener(object : GenericFutureListener<NettyFuture<Channel>> {
-            override fun operationComplete(channelFuture: Future<Channel>) {
-                if (channelFuture.isSuccess) {
-                    val channel = channelFuture.now
-                    val pipeline = channel.pipeline()
-                    channel.pipeline().addLast("handler", object : SimpleChannelInboundHandler<FullHttpResponse>() {
-                        override fun channelRead0(
-                            ctx: ChannelHandlerContext,
-                            response: FullHttpResponse
-                        ) {
-                            pipeline.removeLast()
-                            pool.release(channel)
-                            responseFuture.complete(response)
-                        }
-
-                        override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
-                            val ex = when (cause) {
-                                is DecoderException -> cause.cause
-                                else -> cause
-                            }
-                            responseFuture.completeExceptionally(ex)
-                            ctx.close()
-                            pipeline.removeLast()
-                            pool.release(channel)
-                        }
-                    })
-                    // Prepare the HTTP request
-                    val request: FullHttpRequest = let {
-                        val content: ByteBuf? = body?.takeIf(ByteArray::isNotEmpty)?.let(Unpooled::wrappedBuffer)
-                        DefaultFullHttpRequest(
-                            HttpVersion.HTTP_1_1,
-                            method,
-                            uri.rawPath,
-                            content ?: Unpooled.buffer(0)
-                        ).apply {
-                            headers().apply {
-                                if (content != null) {
-                                    set(HttpHeaderNames.CONTENT_TYPE, HttpHeaderValues.APPLICATION_OCTET_STREAM)
-                                    set(HttpHeaderNames.CONTENT_LENGTH, content.readableBytes())
-                                }
-                                set(HttpHeaderNames.HOST, profile.serverURI.host)
-                                set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE)
-                                set(
-                                    HttpHeaderNames.ACCEPT_ENCODING,
-                                    HttpHeaderValues.GZIP.toString() + "," + HttpHeaderValues.DEFLATE.toString()
-                                )
-                                // Add basic auth if configured
-                                (profile.authentication as? Configuration.Authentication.BasicAuthenticationCredentials)?.let { credentials ->
-                                    val auth = "${credentials.username}:${credentials.password}"
-                                    val encodedAuth = Base64.getEncoder().encodeToString(auth.toByteArray())
-                                    set(HttpHeaderNames.AUTHORIZATION, "Basic $encodedAuth")
-                                }
-                            }
-                        }
-                    }
-
-                    // Set headers
-                    // Send the request
-                    channel.writeAndFlush(request)
-                } else {
-                    responseFuture.completeExceptionally(channelFuture.cause())
-                }
-            }
-        })
-        return responseFuture
-    }
-
-    fun shutDown(): NettyFuture<*> {
-        return group.shutdownGracefully()
-    }
-
-    override fun close() {
-        shutDown().sync()
-    }
-}

gbcs-client/src/main/kotlin/net/woggioni/gbcs/client/impl/Parser.kt

@@ -1,72 +0,0 @@
-package net.woggioni.gbcs.client.impl
-
-import net.woggioni.gbcs.api.exception.ConfigurationException
-import net.woggioni.gbcs.common.Xml.Companion.asIterable
-import net.woggioni.gbcs.common.Xml.Companion.renderAttribute
-import net.woggioni.gbcs.client.GradleBuildCacheClient
-import org.w3c.dom.Document
-import java.net.URI
-import java.nio.file.Files
-import java.nio.file.Path
-import java.security.KeyStore
-import java.security.PrivateKey
-import java.security.cert.X509Certificate
-import java.time.Duration
-
-object Parser {
-
-    fun parse(document: Document): GradleBuildCacheClient.Configuration {
-        val root = document.documentElement
-
-        val profiles = mutableMapOf<String, GradleBuildCacheClient.Configuration.Profile>()
-
-        for (child in root.asIterable()) {
-            val tagName = child.localName
-            when (tagName) {
-                "profile" -> {
-                    val name = child.renderAttribute("name") ?: throw ConfigurationException("name attribute is required")
-                    val uri = child.renderAttribute("base-url")?.let(::URI) ?: throw ConfigurationException("base-url attribute is required")
-                    var authentication: GradleBuildCacheClient.Configuration.Authentication? = null
-                    for (gchild in child.asIterable()) {
-                        when (gchild.localName) {
-                            "tls-client-auth" -> {
-                                val keyStoreFile = gchild.renderAttribute("key-store-file")
-                                val keyStorePassword =
-                                    gchild.renderAttribute("key-store-password")
-                                val keyAlias = gchild.renderAttribute("key-alias")
-                                val keyPassword = gchild.renderAttribute("key-password")
-
-                                val keystore = KeyStore.getInstance("PKCS12").apply {
-                                    Files.newInputStream(Path.of(keyStoreFile)).use {
-                                        load(it, keyStorePassword?.toCharArray())
-                                    }
-                                }
-                                val key = keystore.getKey(keyAlias, keyPassword?.toCharArray()) as PrivateKey
-                                val certChain = keystore.getCertificateChain(keyAlias).asSequence()
-                                    .map { it as X509Certificate }
-                                    .toList()
-                                    .toTypedArray()
-                                authentication =
-                                    GradleBuildCacheClient.Configuration.Authentication.TlsClientAuthenticationCredentials(key, certChain)
-                            }
-
-                            "basic-auth" -> {
-                                val username = gchild.renderAttribute("user") ?: throw ConfigurationException("username attribute is required")
-                                val password = gchild.renderAttribute("password") ?: throw ConfigurationException("password attribute is required")
-                                authentication =
-                                    GradleBuildCacheClient.Configuration.Authentication.BasicAuthenticationCredentials(username, password)
-                            }
-                        }
-                    }
-                    val maxConnections = child.renderAttribute("max-connections")
-                        ?.let(String::toInt)
-                        ?: 50
-                    val connectionTimeout = child.renderAttribute("connection-timeout")
-                        ?.let(Duration::parse)
-                    profiles[name] = GradleBuildCacheClient.Configuration.Profile(uri, authentication, connectionTimeout, maxConnections)
-                }
-            }
-        }
-        return GradleBuildCacheClient.Configuration(profiles)
-    }
-}

gbcs-client/src/main/resources/net/woggioni/gbcs/client/schema/gbcs-client.xsd

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<xs:schema targetNamespace="urn:net.woggioni.gbcs.client"
-           xmlns:xs="http://www.w3.org/2001/XMLSchema"
-           xmlns:gbcs-client="urn:net.woggioni.gbcs.client"
-           elementFormDefault="unqualified"
->
-    <xs:element name="profiles" type="gbcs-client:profilesType"/>
-
-    <xs:complexType name="profilesType">
-        <xs:sequence minOccurs="0">
-            <xs:element name="profile" type="gbcs-client:profileType" maxOccurs="unbounded"/>
-        </xs:sequence>
-    </xs:complexType>
-
-    <xs:complexType name="profileType">
-        <xs:choice>
-            <xs:element name="no-auth" type="gbcs-client:noAuthType"/>
-            <xs:element name="basic-auth" type="gbcs-client:basicAuthType"/>
-            <xs:element name="tls-client-auth" type="gbcs-client:tlsClientAuthType"/>
-        </xs:choice>
-        <xs:attribute name="name" type="xs:token" use="required"/>
-        <xs:attribute name="base-url" type="xs:anyURI" use="required"/>
-        <xs:attribute name="max-connections" type="xs:positiveInteger" default="50"/>
-        <xs:attribute name="connection-timeout" type="xs:duration"/>
-    </xs:complexType>
-
-    <xs:complexType name="noAuthType"/>
-
-    <xs:complexType name="basicAuthType">
-        <xs:attribute name="user" type="xs:token" use="required"/>
-        <xs:attribute name="password" type="xs:string" use="required"/>
-    </xs:complexType>
-
-    <xs:complexType name="tlsClientAuthType">
-        <xs:attribute name="key-store-file" type="xs:anyURI" use="required"/>
-        <xs:attribute name="key-store-password" type="xs:string" use="required"/>
-        <xs:attribute name="key-alias" type="xs:token" use="required"/>
-        <xs:attribute name="key-password" type="xs:string" use="optional"/>
-    </xs:complexType>
-
-</xs:schema>

gbcs-client/src/test/resources/net/woggioni/gbcs/client/test/gbcs-client.xml

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<gbcs-client:profiles xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
-                      xmlns:gbcs-client="urn:net.woggioni.gbcs.client"
-                      xs:schemaLocation="urn:net.woggioni.gbcs.client jms://net.woggioni.gbcs.client/net/woggioni/gbcs/client/schema/gbcs-client.xsd"
-                      >
-    <profile name="profile1" base-url="https://gbcs1.example.com/">
-        <tls-client-auth
-                key-store-file="keystore.pfx"
-                key-store-password="password"
-                key-alias="woggioni@c962475fa38"
-                key-password="key-password"/>
-    </profile>
-    <profile name="profile2" base-url="https://gbcs2.example.com/">
-        <basic-auth user="user" password="password"/>
-    </profile>
-</gbcs-client:profiles>

gbcs-common/src/main/kotlin/net/woggioni/gbcs/common/GBCS.kt

@@ -1,12 +0,0 @@
-package net.woggioni.gbcs.common
-
-import java.net.URI
-import java.net.URL
-
-object GBCS {
-    fun String.toUrl() : URL = URL.of(URI(this), null)
-
-    const val GBCS_NAMESPACE_URI: String = "urn:net.woggioni.gbcs.server"
-    const val GBCS_PREFIX: String = "gbcs"
-    const val XML_SCHEMA_NAMESPACE_URI = "http://www.w3.org/2001/XMLSchema-instance"
-}

gbcs-common/src/main/kotlin/net/woggioni/gbcs/common/Logging.kt

@@ -1,111 +0,0 @@
-package net.woggioni.gbcs.common
-
-import org.slf4j.Logger
-import org.slf4j.LoggerFactory
-import org.slf4j.event.Level
-import java.nio.file.Files
-import java.nio.file.Path
-import java.util.logging.LogManager
-
-inline fun <reified T> T.contextLogger() = LoggerFactory.getLogger(T::class.java)
-
-inline fun Logger.traceParam(messageBuilder : () -> Pair<String, Array<Any>>) {
-    if(isTraceEnabled) {
-        val (format, params) = messageBuilder()
-        trace(format, params)
-    }
-}
-
-inline fun Logger.debugParam(messageBuilder : () -> Pair<String, Array<Any>>) {
-    if(isDebugEnabled) {
-        val (format, params) = messageBuilder()
-        info(format, params)
-    }
-}
-
-inline fun Logger.infoParam(messageBuilder : () -> Pair<String, Array<Any>>) {
-    if(isInfoEnabled) {
-        val (format, params) = messageBuilder()
-        info(format, params)
-    }
-}
-
-inline fun Logger.warnParam(messageBuilder : () -> Pair<String, Array<Any>>) {
-    if(isWarnEnabled) {
-        val (format, params) = messageBuilder()
-        warn(format, params)
-    }
-}
-
-inline fun Logger.errorParam(messageBuilder : () -> Pair<String, Array<Any>>) {
-    if(isErrorEnabled) {
-        val (format, params) = messageBuilder()
-        error(format, params)
-    }
-}
-
-
-inline fun log(log : Logger,
-               filter : Logger.() -> Boolean,
-               loggerMethod : Logger.(String) -> Unit, messageBuilder : () -> String) {
-    if(log.filter()) {
-        log.loggerMethod(messageBuilder())
-    }
-}
-
-inline fun Logger.log(level : Level, messageBuilder : () -> String) {
-    if(isEnabledForLevel(level)) {
-        makeLoggingEventBuilder(level).log(messageBuilder())
-    }
-}
-
-inline fun Logger.trace(messageBuilder : () -> String) {
-    if(isTraceEnabled) {
-        trace(messageBuilder())
-    }
-}
-
-inline fun Logger.debug(messageBuilder : () -> String) {
-    if(isDebugEnabled) {
-        debug(messageBuilder())
-    }
-}
-
-inline fun Logger.info(messageBuilder : () -> String) {
-    if(isInfoEnabled) {
-        info(messageBuilder())
-    }
-}
-
-inline fun Logger.warn(messageBuilder : () -> String) {
-    if(isWarnEnabled) {
-        warn(messageBuilder())
-    }
-}
-
-inline fun Logger.error(messageBuilder : () -> String) {
-    if(isErrorEnabled) {
-        error(messageBuilder())
-    }
-}
-
-
-class LoggingConfig {
-
-    init {
-        val logManager = LogManager.getLogManager()
-        System.getProperty("log.config.source")?.let withSource@ { source ->
-            val urls = LoggingConfig::class.java.classLoader.getResources(source)
-            while(urls.hasMoreElements()) {
-                val url = urls.nextElement()
-                url.openStream().use { inputStream ->
-                    logManager.readConfiguration(inputStream)
-                    return@withSource
-                }
-            }
-            Path.of(source).takeIf(Files::exists)
-                ?.let(Files::newInputStream)
-                ?.use(logManager::readConfiguration)
-        }
-    }
-}

gbcs-common/src/main/resources/META-INF/services/java.net.spi.URLStreamHandlerProvider

@@ -1 +0,0 @@
-net.woggioni.gbcs.common.GbcsUrlStreamHandlerFactory

gbcs-server-memcached/src/main/java/module-info.java

@@ -1,14 +0,0 @@
-import net.woggioni.gbcs.api.CacheProvider;
-
-module net.woggioni.gbcs.server.memcached {
-    requires net.woggioni.gbcs.common;
-    requires net.woggioni.gbcs.api;
-    requires com.googlecode.xmemcached;
-    requires net.woggioni.jwo;
-    requires java.xml;
-    requires kotlin.stdlib;
-
-    provides CacheProvider with net.woggioni.gbcs.server.memcached.MemcachedCacheProvider;
-
-    opens net.woggioni.gbcs.server.memcached.schema;
-}

gbcs-server-memcached/src/main/kotlin/net/woggioni/gbcs/server/memcached/MemcachedCache.kt

@@ -1,59 +0,0 @@
-package net.woggioni.gbcs.server.memcached
-
-import net.rubyeye.xmemcached.XMemcachedClientBuilder
-import net.rubyeye.xmemcached.command.BinaryCommandFactory
-import net.rubyeye.xmemcached.transcoders.CompressionMode
-import net.rubyeye.xmemcached.transcoders.SerializingTranscoder
-import net.woggioni.gbcs.api.Cache
-import net.woggioni.gbcs.api.exception.ContentTooLargeException
-import net.woggioni.gbcs.common.HostAndPort
-import net.woggioni.jwo.JWO
-import java.io.ByteArrayInputStream
-import java.net.InetSocketAddress
-import java.nio.channels.Channels
-import java.nio.channels.ReadableByteChannel
-import java.nio.charset.StandardCharsets
-import java.security.MessageDigest
-import java.time.Duration
-
-class MemcachedCache(
-    servers: List<HostAndPort>,
-    private val maxAge: Duration,
-    maxSize : Int,
-    digestAlgorithm: String?,
-    compressionMode: CompressionMode,
-) : Cache {
-    private val memcachedClient = XMemcachedClientBuilder(
-        servers.stream().map { addr: HostAndPort -> InetSocketAddress(addr.host, addr.port) }.toList()
-    ).apply {
-        commandFactory = BinaryCommandFactory()
-        digestAlgorithm?.let { dAlg ->
-            setKeyProvider { key ->
-                val md = MessageDigest.getInstance(dAlg)
-                md.update(key.toByteArray(StandardCharsets.UTF_8))
-                JWO.bytesToHex(md.digest())
-            }
-        }
-        transcoder = SerializingTranscoder(maxSize).apply {
-            setCompressionMode(compressionMode)
-        }
-    }.build()
-
-    override fun get(key: String): ReadableByteChannel? {
-        return memcachedClient.get<ByteArray>(key)
-            ?.let(::ByteArrayInputStream)
-            ?.let(Channels::newChannel)
-    }
-
-    override fun put(key: String, content: ByteArray) {
-        try {
-            memcachedClient[key, maxAge.toSeconds().toInt()] = content
-        } catch (e: IllegalArgumentException) {
-            throw ContentTooLargeException(e.message, e)
-        }
-    }
-
-    override fun close() {
-        memcachedClient.shutdown()
-    }
-}

gbcs-server-memcached/src/main/kotlin/net/woggioni/gbcs/server/memcached/MemcachedCacheConfiguration.kt

@@ -1,26 +0,0 @@
-package net.woggioni.gbcs.server.memcached
-
-import net.rubyeye.xmemcached.transcoders.CompressionMode
-import net.woggioni.gbcs.api.Configuration
-import net.woggioni.gbcs.common.HostAndPort
-import java.time.Duration
-
-data class MemcachedCacheConfiguration(
-    var servers: List<HostAndPort>,
-    var maxAge: Duration = Duration.ofDays(1),
-    var maxSize: Int = 0x100000,
-    var digestAlgorithm: String? = null,
-    var compressionMode: CompressionMode = CompressionMode.ZIP,
-) : Configuration.Cache {
-    override fun materialize() = MemcachedCache(
-        servers,
-        maxAge,
-        maxSize,
-        digestAlgorithm,
-        compressionMode
-    )
-
-    override fun getNamespaceURI() = "urn:net.woggioni.gbcs.server.memcached"
-
-    override fun getTypeName() = "memcachedCacheType"
-}

gbcs-server-memcached/src/main/kotlin/net/woggioni/gbcs/server/memcached/MemcachedCacheProvider.kt

@@ -1,88 +0,0 @@
-package net.woggioni.gbcs.server.memcached
-
-import net.rubyeye.xmemcached.transcoders.CompressionMode
-import net.woggioni.gbcs.api.CacheProvider
-import net.woggioni.gbcs.api.exception.ConfigurationException
-import net.woggioni.gbcs.common.GBCS
-import net.woggioni.gbcs.common.HostAndPort
-import net.woggioni.gbcs.common.Xml
-import net.woggioni.gbcs.common.Xml.Companion.asIterable
-import net.woggioni.gbcs.common.Xml.Companion.renderAttribute
-import org.w3c.dom.Document
-import org.w3c.dom.Element
-import java.time.Duration
-
-class MemcachedCacheProvider : CacheProvider<MemcachedCacheConfiguration> {
-    override fun getXmlSchemaLocation() = "jpms://net.woggioni.gbcs.server.memcached/net/woggioni/gbcs/server/memcached/schema/gbcs-memcached.xsd"
-
-    override fun getXmlType() = "memcachedCacheType"
-
-    override fun getXmlNamespace() = "urn:net.woggioni.gbcs.server.memcached"
-
-    val xmlNamespacePrefix : String
-        get() = "gbcs-memcached"
-
-    override fun deserialize(el: Element): MemcachedCacheConfiguration {
-        val servers = mutableListOf<HostAndPort>()
-        val maxAge = el.renderAttribute("max-age")
-            ?.let(Duration::parse)
-            ?: Duration.ofDays(1)
-        val maxSize = el.renderAttribute("max-size")
-            ?.let(String::toInt)
-            ?: 0x100000
-        val compressionMode = el.renderAttribute("compression-mode")
-            ?.let {
-                when (it) {
-                    "gzip" -> CompressionMode.GZIP
-                    "zip" -> CompressionMode.ZIP
-                    else -> CompressionMode.ZIP
-                }
-            }
-            ?: CompressionMode.ZIP
-        val digestAlgorithm = el.renderAttribute("digest")
-        for (child in el.asIterable()) {
-            when (child.nodeName) {
-                "server" -> {
-                    val host = child.renderAttribute("host") ?: throw ConfigurationException("host attribute is required")
-                    val port = child.renderAttribute("port")?.toInt() ?: throw ConfigurationException("port attribute is required")
-                    servers.add(HostAndPort(host, port))
-                }
-            }
-        }
-
-        return MemcachedCacheConfiguration(
-            servers,
-            maxAge,
-            maxSize,
-            digestAlgorithm,
-            compressionMode,
-        )
-    }
-
-    override fun serialize(doc: Document, cache: MemcachedCacheConfiguration) = cache.run {
-        val result = doc.createElement("cache")
-        Xml.of(doc, result) {
-            attr("xmlns:${xmlNamespacePrefix}", xmlNamespace, namespaceURI = "http://www.w3.org/2000/xmlns/")
-
-            attr("xs:type", "${xmlNamespacePrefix}:$xmlType", GBCS.XML_SCHEMA_NAMESPACE_URI)
-            for (server in servers) {
-                node("server") {
-                    attr("host", server.host)
-                    attr("port", server.port.toString())
-                }
-            }
-            attr("max-age", maxAge.toString())
-            attr("max-size", maxSize.toString())
-            digestAlgorithm?.let { digestAlgorithm ->
-                attr("digest", digestAlgorithm)
-            }
-            attr(
-                "compression-mode", when (compressionMode) {
-                    CompressionMode.GZIP -> "gzip"
-                    CompressionMode.ZIP -> "zip"
-                }
-            )
-        }
-        result
-    }
-}

gbcs-server-memcached/src/main/resources/META-INF/services/net.woggioni.gbcs.api.CacheProvider

@@ -1 +0,0 @@
-net.woggioni.gbcs.server.memcached.MemcachedCacheProvider

gbcs-server-memcached/src/main/resources/net/woggioni/gbcs/server/memcached/schema/gbcs-memcached.xsd

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<xs:schema targetNamespace="urn:net.woggioni.gbcs.server.memcached"
-           xmlns:gbcs-memcached="urn:net.woggioni.gbcs.server.memcached"
-           xmlns:gbcs="urn:net.woggioni.gbcs.server"
-           xmlns:xs="http://www.w3.org/2001/XMLSchema">
-
-    <xs:import schemaLocation="jpms://net.woggioni.gbcs.server/net/woggioni/gbcs/server/schema/gbcs.xsd" namespace="urn:net.woggioni.gbcs.server"/>
-
-    <xs:complexType name="memcachedServerType">
-        <xs:attribute name="host" type="xs:token" use="required"/>
-        <xs:attribute name="port" type="xs:positiveInteger" use="required"/>
-    </xs:complexType>
-
-    <xs:complexType name="memcachedCacheType">
-        <xs:complexContent>
-            <xs:extension base="gbcs:cacheType">
-                <xs:sequence maxOccurs="unbounded">
-                    <xs:element name="server" type="gbcs-memcached:memcachedServerType"/>
-                </xs:sequence>
-                <xs:attribute name="max-age" type="xs:duration" default="P1D"/>
-                <xs:attribute name="max-size" type="xs:unsignedInt" default="1048576"/>
-                <xs:attribute name="digest" type="xs:token" />
-                <xs:attribute name="compression-mode" type="gbcs-memcached:compressionType" default="zip"/>
-            </xs:extension>
-        </xs:complexContent>
-    </xs:complexType>
-
-    <xs:simpleType name="compressionType">
-        <xs:restriction base="xs:token">
-            <xs:enumeration value="zip"/>
-            <xs:enumeration value="gzip"/>
-        </xs:restriction>
-    </xs:simpleType>
-
-</xs:schema>

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/Logging.kt

@@ -1,30 +0,0 @@
-package net.woggioni.gbcs.server
-
-import io.netty.channel.ChannelHandlerContext
-import org.slf4j.Logger
-import java.net.InetSocketAddress
-
-inline fun Logger.trace(ctx : ChannelHandlerContext, messageBuilder : () -> String) {
-    log(this, ctx, { isTraceEnabled }, { trace(it) } , messageBuilder)
-}
-inline fun Logger.debug(ctx : ChannelHandlerContext, messageBuilder : () -> String) {
-    log(this, ctx, { isDebugEnabled }, { debug(it) } , messageBuilder)
-}
-inline fun Logger.info(ctx : ChannelHandlerContext, messageBuilder : () -> String) {
-    log(this, ctx, { isInfoEnabled }, { info(it) } , messageBuilder)
-}
-inline fun Logger.warn(ctx : ChannelHandlerContext, messageBuilder : () -> String) {
-    log(this, ctx, { isWarnEnabled }, { warn(it) } , messageBuilder)
-}
-inline fun Logger.error(ctx : ChannelHandlerContext, messageBuilder : () -> String) {
-    log(this, ctx, { isErrorEnabled }, { error(it) } , messageBuilder)
-}
-
-inline fun log(log : Logger, ctx : ChannelHandlerContext,
-                        filter : Logger.() -> Boolean,
-                        loggerMethod : Logger.(String) -> Unit, messageBuilder : () -> String) {
-    if(log.filter()) {
-        val clientAddress = (ctx.channel().remoteAddress() as InetSocketAddress).address.hostAddress
-        log.loggerMethod(clientAddress + " - " + messageBuilder())
-    }
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/cache/CacheUtils.kt

@@ -1,21 +0,0 @@
-package net.woggioni.gbcs.server.cache
-
-import net.woggioni.jwo.JWO
-import java.security.MessageDigest
-
-object CacheUtils {
-    fun digest(
-        data: ByteArray,
-        md: MessageDigest = MessageDigest.getInstance("MD5")
-    ): ByteArray {
-        md.update(data)
-        return md.digest()
-    }
-
-    fun digestString(
-        data: ByteArray,
-        md: MessageDigest = MessageDigest.getInstance("MD5")
-    ): String {
-        return JWO.bytesToHex(digest(data, md))
-    }
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/cache/FileSystemCache.kt

@@ -1,120 +0,0 @@
-package net.woggioni.gbcs.server.cache
-
-import net.woggioni.gbcs.api.Cache
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.server.cache.CacheUtils.digestString
-import net.woggioni.jwo.LockFile
-import java.nio.channels.Channels
-import java.nio.channels.FileChannel
-import java.nio.file.Files
-import java.nio.file.Path
-import java.nio.file.StandardCopyOption
-import java.nio.file.StandardOpenOption
-import java.nio.file.attribute.BasicFileAttributes
-import java.security.MessageDigest
-import java.time.Duration
-import java.time.Instant
-import java.util.concurrent.atomic.AtomicReference
-import java.util.zip.Deflater
-import java.util.zip.DeflaterOutputStream
-import java.util.zip.Inflater
-import java.util.zip.InflaterInputStream
-
-class FileSystemCache(
-    val root: Path,
-    val maxAge: Duration,
-    val digestAlgorithm: String?,
-    val compressionEnabled: Boolean,
-    val compressionLevel: Int
-) : Cache {
-
-    private val log = contextLogger()
-
-    init {
-        Files.createDirectories(root)
-    }
-
-    private var nextGc = AtomicReference(Instant.now().plus(maxAge))
-
-    override fun get(key: String) = (digestAlgorithm
-        ?.let(MessageDigest::getInstance)
-        ?.let { md ->
-            digestString(key.toByteArray(), md)
-        } ?: key).let { digest ->
-        root.resolve(digest).takeIf(Files::exists)
-            ?.let { file ->
-                file.takeIf(Files::exists)?.let { file ->
-                    if (compressionEnabled) {
-                        val inflater = Inflater()
-                        Channels.newChannel(
-                            InflaterInputStream(
-                                Channels.newInputStream(
-                                    FileChannel.open(
-                                        file,
-                                        StandardOpenOption.READ
-                                    )
-                                ), inflater
-                            )
-                        )
-                    } else {
-                        FileChannel.open(file, StandardOpenOption.READ)
-                    }
-                }
-            }.also {
-                gc()
-            }
-    }
-
-    override fun put(key: String, content: ByteArray) {
-        (digestAlgorithm
-            ?.let(MessageDigest::getInstance)
-            ?.let { md ->
-                digestString(key.toByteArray(), md)
-            } ?: key).let { digest ->
-            val file = root.resolve(digest)
-            val tmpFile = Files.createTempFile(root, null, ".tmp")
-            try {
-                Files.newOutputStream(tmpFile).let {
-                    if (compressionEnabled) {
-                        val deflater = Deflater(compressionLevel)
-                        DeflaterOutputStream(it, deflater)
-                    } else {
-                        it
-                    }
-                }.use {
-                    it.write(content)
-                }
-                Files.move(tmpFile, file, StandardCopyOption.ATOMIC_MOVE)
-            } catch (t: Throwable) {
-                Files.delete(tmpFile)
-                throw t
-            }
-        }.also {
-            gc()
-        }
-    }
-
-    private fun gc() {
-        val now = Instant.now()
-        val oldValue = nextGc.getAndSet(now.plus(maxAge))
-        if (oldValue < now) {
-            actualGc(now)
-        }
-    }
-
-    @Synchronized
-    private fun actualGc(now: Instant) {
-        Files.list(root).filter {
-            val creationTimeStamp = Files.readAttributes(it, BasicFileAttributes::class.java)
-                .creationTime()
-                .toInstant()
-            now > creationTimeStamp.plus(maxAge)
-        }.forEach { file ->
-            LockFile.acquire(file, false).use {
-                Files.delete(file)
-            }
-        }
-    }
-
-    override fun close() {}
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/cache/FileSystemCacheConfiguration.kt

@@ -1,27 +0,0 @@
-package net.woggioni.gbcs.server.cache
-
-import net.woggioni.gbcs.api.Configuration
-import net.woggioni.gbcs.common.GBCS
-import net.woggioni.jwo.Application
-import java.nio.file.Path
-import java.time.Duration
-
-data class FileSystemCacheConfiguration(
-    val root: Path?,
-    val maxAge: Duration,
-    val digestAlgorithm : String?,
-    val compressionEnabled: Boolean,
-    val compressionLevel: Int,
-) : Configuration.Cache {
-    override fun materialize() = FileSystemCache(
-        root ?: Application.builder("gbcs").build().computeCacheDirectory(),
-        maxAge,
-        digestAlgorithm,
-        compressionEnabled,
-        compressionLevel
-    )
-
-    override fun getNamespaceURI() = GBCS.GBCS_NAMESPACE_URI
-
-    override fun getTypeName() = "fileSystemCacheType"
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/cache/InMemoryCache.kt

@@ -1,106 +0,0 @@
-package net.woggioni.gbcs.server.cache
-
-import net.woggioni.gbcs.api.Cache
-import net.woggioni.gbcs.server.cache.CacheUtils.digestString
-import java.io.ByteArrayInputStream
-import java.io.ByteArrayOutputStream
-import java.nio.ByteBuffer
-import java.nio.channels.Channels
-import java.security.MessageDigest
-import java.time.Duration
-import java.time.Instant
-import java.util.concurrent.ConcurrentHashMap
-import java.util.concurrent.PriorityBlockingQueue
-import java.util.concurrent.atomic.AtomicInteger
-import java.util.concurrent.atomic.AtomicReference
-import java.util.zip.Deflater
-import java.util.zip.DeflaterOutputStream
-import java.util.zip.Inflater
-import java.util.zip.InflaterInputStream
-
-class InMemoryCache(
-    val maxAge: Duration,
-    val digestAlgorithm: String?,
-    val compressionEnabled: Boolean,
-    val compressionLevel: Int
-) : Cache {
-
-    private val map = ConcurrentHashMap<String, MapValue>()
-
-    private class MapValue(val rc: AtomicInteger, val payload : AtomicReference<ByteArray>)
-
-    private class RemovalQueueElement(val key: String, val expiry : Instant) : Comparable<RemovalQueueElement> {
-        override fun compareTo(other: RemovalQueueElement)= expiry.compareTo(other.expiry)
-    }
-
-    private val removalQueue = PriorityBlockingQueue<RemovalQueueElement>()
-
-    private var running = true
-    private val garbageCollector = Thread({
-        while(true) {
-            val el = removalQueue.take()
-            val now = Instant.now()
-            if(now > el.expiry) {
-                val value = map[el.key] ?: continue
-                val rc = value.rc.decrementAndGet()
-                if(rc == 0) {
-                    map.remove(el.key)
-                }
-            } else {
-                removalQueue.put(el)
-                Thread.sleep(minOf(Duration.between(now, el.expiry), Duration.ofSeconds(1)))
-            }
-        }
-    }).apply {
-        start()
-    }
-
-    override fun close() {
-        running = false
-        garbageCollector.join()
-    }
-
-    override fun get(key: String) =
-        (digestAlgorithm
-            ?.let(MessageDigest::getInstance)
-            ?.let { md ->
-                digestString(key.toByteArray(), md)
-            } ?: key
-                ).let { digest ->
-                map[digest]
-                    ?.let(MapValue::payload)
-                    ?.let(AtomicReference<ByteArray>::get)
-                    ?.let { value ->
-                    if (compressionEnabled) {
-                        val inflater = Inflater()
-                        Channels.newChannel(InflaterInputStream(ByteArrayInputStream(value), inflater))
-                    } else {
-                        Channels.newChannel(ByteArrayInputStream(value))
-                    }
-                }
-            }
-
-    override fun put(key: String, content: ByteArray) {
-        (digestAlgorithm
-            ?.let(MessageDigest::getInstance)
-            ?.let { md ->
-                digestString(key.toByteArray(), md)
-            } ?: key).let { digest ->
-            val value = if (compressionEnabled) {
-                val deflater = Deflater(compressionLevel)
-                val baos = ByteArrayOutputStream()
-                DeflaterOutputStream(baos, deflater).use { stream ->
-                    stream.write(content)
-                }
-                baos.toByteArray()
-            } else {
-                content
-            }
-            val mapValue = map.computeIfAbsent(digest) {
-                MapValue(AtomicInteger(0), AtomicReference())
-            }
-            mapValue.payload.set(value)
-            removalQueue.put(RemovalQueueElement(digest, Instant.now().plus(maxAge)))
-        }
-    }
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/cache/InMemoryCacheConfiguration.kt

@@ -1,23 +0,0 @@
-package net.woggioni.gbcs.server.cache
-
-import net.woggioni.gbcs.api.Configuration
-import net.woggioni.gbcs.common.GBCS
-import java.time.Duration
-
-data class InMemoryCacheConfiguration(
-    val maxAge: Duration,
-    val digestAlgorithm : String?,
-    val compressionEnabled: Boolean,
-    val compressionLevel: Int,
-) : Configuration.Cache {
-    override fun materialize() = InMemoryCache(
-        maxAge,
-        digestAlgorithm,
-        compressionEnabled,
-        compressionLevel
-    )
-
-    override fun getNamespaceURI() = GBCS.GBCS_NAMESPACE_URI
-
-    override fun getTypeName() = "inMemoryCacheType"
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/handler/ServerHandler.kt

@@ -1,167 +0,0 @@
-package net.woggioni.gbcs.server.handler
-
-import io.netty.buffer.Unpooled
-import io.netty.channel.ChannelFutureListener
-import io.netty.channel.ChannelHandler
-import io.netty.channel.ChannelHandlerContext
-import io.netty.channel.DefaultFileRegion
-import io.netty.channel.SimpleChannelInboundHandler
-import io.netty.handler.codec.http.DefaultFullHttpResponse
-import io.netty.handler.codec.http.DefaultHttpResponse
-import io.netty.handler.codec.http.FullHttpRequest
-import io.netty.handler.codec.http.HttpHeaderNames
-import io.netty.handler.codec.http.HttpHeaderValues
-import io.netty.handler.codec.http.HttpMethod
-import io.netty.handler.codec.http.HttpResponseStatus
-import io.netty.handler.codec.http.HttpUtil
-import io.netty.handler.codec.http.LastHttpContent
-import io.netty.handler.stream.ChunkedNioStream
-import net.woggioni.gbcs.api.Cache
-import net.woggioni.gbcs.api.exception.CacheException
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.server.debug
-import net.woggioni.gbcs.server.warn
-import java.nio.channels.FileChannel
-import java.nio.file.Path
-
-@ChannelHandler.Sharable
-class ServerHandler(private val cache: Cache, private val serverPrefix: Path) :
-    SimpleChannelInboundHandler<FullHttpRequest>() {
-
-    private val log = contextLogger()
-
-    override fun channelRead0(ctx: ChannelHandlerContext, msg: FullHttpRequest) {
-        val keepAlive: Boolean = HttpUtil.isKeepAlive(msg)
-        val method = msg.method()
-        if (method === HttpMethod.GET) {
-            val path = Path.of(msg.uri())
-            val prefix = path.parent
-            val key = path.fileName?.toString() ?: let {
-                val response = DefaultFullHttpResponse(msg.protocolVersion(), HttpResponseStatus.NOT_FOUND)
-                response.headers()[HttpHeaderNames.CONTENT_LENGTH] = 0
-                ctx.writeAndFlush(response)
-                return
-            }
-            if (serverPrefix == prefix) {
-                try {
-                    cache.get(key)
-                } catch(ex : Throwable) {
-                    throw CacheException("Error accessing the cache backend", ex)
-                }?.let { channel ->
-                    log.debug(ctx) {
-                        "Cache hit for key '$key'"
-                    }
-                    val response = DefaultHttpResponse(msg.protocolVersion(), HttpResponseStatus.OK)
-                    response.headers()[HttpHeaderNames.CONTENT_TYPE] = HttpHeaderValues.APPLICATION_OCTET_STREAM
-                    if (!keepAlive) {
-                        response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE)
-                        response.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.IDENTITY)
-                    } else {
-                        response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE)
-                        response.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED)
-                    }
-                    ctx.write(response)
-                    when (channel) {
-                        is FileChannel -> {
-                            if (keepAlive) {
-                                ctx.write(DefaultFileRegion(channel, 0, channel.size()))
-                                ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT.retainedDuplicate())
-                            } else {
-                                ctx.writeAndFlush(DefaultFileRegion(channel, 0, channel.size()))
-                                    .addListener(ChannelFutureListener.CLOSE)
-                            }
-                        }
-                        else -> {
-                            ctx.write(ChunkedNioStream(channel)).addListener { evt ->
-                                channel.close()
-                            }
-                            ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT.retainedDuplicate())
-                        }
-                    }
-                } ?: let {
-                    log.debug(ctx) {
-                        "Cache miss for key '$key'"
-                    }
-                    val response = DefaultFullHttpResponse(msg.protocolVersion(), HttpResponseStatus.NOT_FOUND)
-                    response.headers()[HttpHeaderNames.CONTENT_LENGTH] = 0
-                    ctx.writeAndFlush(response)
-                }
-            } else {
-                log.warn(ctx) {
-                    "Got request for unhandled path '${msg.uri()}'"
-                }
-                val response = DefaultFullHttpResponse(msg.protocolVersion(), HttpResponseStatus.BAD_REQUEST)
-                response.headers()[HttpHeaderNames.CONTENT_LENGTH] = 0
-                ctx.writeAndFlush(response)
-            }
-        } else if (method === HttpMethod.PUT) {
-            val path = Path.of(msg.uri())
-            val prefix = path.parent
-            val key = path.fileName.toString()
-
-            if (serverPrefix == prefix) {
-                log.debug(ctx) {
-                    "Added value for key '$key' to build cache"
-                }
-                val bodyBytes = msg.content().run {
-                    if (isDirect) {
-                        ByteArray(readableBytes()).also {
-                            readBytes(it)
-                        }
-                    } else {
-                        array()
-                    }
-                }
-                try {
-                    cache.put(key, bodyBytes)
-                } catch(ex : Throwable) {
-                    throw CacheException("Error accessing the cache backend", ex)
-                }
-                val response = DefaultFullHttpResponse(
-                    msg.protocolVersion(), HttpResponseStatus.CREATED,
-                    Unpooled.copiedBuffer(key.toByteArray())
-                )
-                response.headers()[HttpHeaderNames.CONTENT_LENGTH] = response.content().readableBytes()
-                ctx.writeAndFlush(response)
-            } else {
-                log.warn(ctx) {
-                    "Got request for unhandled path '${msg.uri()}'"
-                }
-                val response = DefaultFullHttpResponse(msg.protocolVersion(), HttpResponseStatus.BAD_REQUEST)
-                response.headers()[HttpHeaderNames.CONTENT_LENGTH] = "0"
-                ctx.writeAndFlush(response)
-            }
-        } else if(method == HttpMethod.TRACE) {
-            val replayedRequestHead = ctx.alloc().buffer()
-            replayedRequestHead.writeCharSequence("TRACE ${Path.of(msg.uri())} ${msg.protocolVersion().text()}\r\n", Charsets.US_ASCII)
-            msg.headers().forEach { (key, value) ->
-                replayedRequestHead.apply {
-                    writeCharSequence(key, Charsets.US_ASCII)
-                    writeCharSequence(": ", Charsets.US_ASCII)
-                    writeCharSequence(value, Charsets.UTF_8)
-                    writeCharSequence("\r\n", Charsets.US_ASCII)
-                }
-            }
-            replayedRequestHead.writeCharSequence("\r\n", Charsets.US_ASCII)
-            val requestBody = msg.content()
-            requestBody.retain()
-            val responseBody = ctx.alloc().compositeBuffer(2).apply {
-                addComponents(true, replayedRequestHead)
-                addComponents(true, requestBody)
-            }
-            val response = DefaultFullHttpResponse(msg.protocolVersion(), HttpResponseStatus.OK, responseBody)
-            response.headers().apply {
-                set(HttpHeaderNames.CONTENT_TYPE, "message/http")
-                set(HttpHeaderNames.CONTENT_LENGTH, responseBody.readableBytes())
-            }
-            ctx.writeAndFlush(response)
-        } else {
-            log.warn(ctx) {
-                "Got request with unhandled method '${msg.method().name()}'"
-            }
-            val response = DefaultFullHttpResponse(msg.protocolVersion(), HttpResponseStatus.METHOD_NOT_ALLOWED)
-            response.headers()[HttpHeaderNames.CONTENT_LENGTH] = "0"
-            ctx.writeAndFlush(response)
-        }
-    }
-}

gbcs-server/src/main/kotlin/net/woggioni/gbcs/server/throttling/ThrottlingHandler.kt

@@ -1,99 +0,0 @@
-package net.woggioni.gbcs.server.throttling
-
-import io.netty.channel.ChannelHandler.Sharable
-import io.netty.channel.ChannelHandlerContext
-import io.netty.channel.ChannelInboundHandlerAdapter
-import io.netty.handler.codec.http.DefaultFullHttpResponse
-import io.netty.handler.codec.http.HttpHeaderNames
-import io.netty.handler.codec.http.HttpResponseStatus
-import io.netty.handler.codec.http.HttpVersion
-import net.woggioni.gbcs.api.Configuration
-import net.woggioni.gbcs.common.contextLogger
-import net.woggioni.gbcs.server.GradleBuildCacheServer
-import net.woggioni.jwo.Bucket
-import net.woggioni.jwo.LongMath
-import java.net.InetSocketAddress
-import java.time.Duration
-import java.time.temporal.ChronoUnit
-import java.util.concurrent.TimeUnit
-
-
-@Sharable
-class ThrottlingHandler(cfg: Configuration) :
-    ChannelInboundHandlerAdapter() {
-
-    private val log = contextLogger()
-    private val bucketManager = BucketManager.from(cfg)
-
-    private val connectionConfiguration = cfg.connection
-
-    /**
-     * If the suggested waiting time from the bucket is lower than this
-     * amount, then the server will simply wait by itself before sending a response
-     * instead of replying with 429
-     */
-    private val waitThreshold = minOf(
-        connectionConfiguration.idleTimeout,
-        connectionConfiguration.readIdleTimeout,
-        connectionConfiguration.writeIdleTimeout
-    ).dividedBy(2)
-
-    override fun channelRead(ctx: ChannelHandlerContext, msg: Any) {
-        val buckets = mutableListOf<Bucket>()
-        val user = ctx.channel().attr(GradleBuildCacheServer.userAttribute).get()
-        if (user != null) {
-            bucketManager.getBucketByUser(user)?.let(buckets::add)
-        }
-        val groups = ctx.channel().attr(GradleBuildCacheServer.groupAttribute).get() ?: emptySet()
-        if (groups.isNotEmpty()) {
-            groups.forEach { group ->
-                bucketManager.getBucketByGroup(group)?.let(buckets::add)
-            }
-        }
-        if (user == null && groups.isEmpty()) {
-            bucketManager.getBucketByAddress(ctx.channel().remoteAddress() as InetSocketAddress)?.let(buckets::add)
-        }
-        if (buckets.isEmpty()) {
-            return super.channelRead(ctx, msg)
-        } else {
-            handleBuckets(buckets, ctx, msg, true)
-        }
-    }
-
-    private fun handleBuckets(buckets : List<Bucket>, ctx : ChannelHandlerContext, msg : Any, delayResponse : Boolean) {
-        var nextAttempt = -1L
-        for (bucket in buckets) {
-            val bucketNextAttempt = bucket.removeTokensWithEstimate(1)
-            if (bucketNextAttempt > nextAttempt) {
-                nextAttempt = bucketNextAttempt
-            }
-        }
-        if(nextAttempt < 0) {
-            super.channelRead(ctx, msg)
-            return
-        }
-        val waitDuration = Duration.of(LongMath.ceilDiv(nextAttempt, 100_000_000L) * 100L, ChronoUnit.MILLIS)
-        if (delayResponse && waitDuration < waitThreshold) {
-            ctx.executor().schedule({
-                handleBuckets(buckets, ctx, msg, false)
-            }, waitDuration.toMillis(), TimeUnit.MILLISECONDS)
-        } else {
-            sendThrottledResponse(ctx, waitDuration)
-        }
-    }
-
-    private fun sendThrottledResponse(ctx: ChannelHandlerContext, retryAfter: Duration) {
-        val response = DefaultFullHttpResponse(
-            HttpVersion.HTTP_1_1,
-            HttpResponseStatus.TOO_MANY_REQUESTS
-        )
-        response.headers()[HttpHeaderNames.CONTENT_LENGTH] = 0
-        retryAfter.seconds.takeIf {
-            it > 0
-        }?.let {
-            response.headers()[HttpHeaderNames.RETRY_AFTER] = retryAfter.seconds
-        }
-
-        ctx.writeAndFlush(response)
-    }
-}

gbcs-server/src/main/resources/META-INF/services/net.woggioni.gbcs.api.CacheProvider

@@ -1,2 +0,0 @@
-net.woggioni.gbcs.server.cache.FileSystemCacheProvider
-net.woggioni.gbcs.server.cache.InMemoryCacheProvider

gbcs-server/src/test/resources/net/woggioni/gbcs/server/test/valid/gbcs-memcached.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<gbcs:server xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
-             xmlns:gbcs="urn:net.woggioni.gbcs.server"
-             xmlns:gbcs-memcached="urn:net.woggioni.gbcs.server.memcached"
-             xs:schemaLocation="urn:net.woggioni.gbcs.server.memcached jpms://net.woggioni.gbcs.server.memcached/net/woggioni/gbcs/server/memcached/schema/gbcs-memcached.xsd urn:net.woggioni.gbcs.server jpms://net.woggioni.gbcs.server/net/woggioni/gbcs/server/schema/gbcs.xsd">
-    <bind host="127.0.0.1" port="11443" incoming-connections-backlog-size="50"/>
-    <connection
-            write-timeout="PT25M"
-            read-timeout="PT20M"
-            read-idle-timeout="PT10M"
-            write-idle-timeout="PT11M"
-            idle-timeout="PT30M"
-            max-request-size="101325"/>
-    <event-executor use-virtual-threads="false"/>
-    <cache xs:type="gbcs-memcached:memcachedCacheType" max-age="P7D" max-size="101325" digest="SHA-256">
-        <server host="127.0.0.1" port="11211"/>
-    </cache>
-    <authentication>
-        <none/>
-    </authentication>
-</gbcs:server>

gradle.properties

@@ -2,11 +2,10 @@ org.gradle.configuration-cache=false
 org.gradle.parallel=true
 org.gradle.caching=true
 
-gbcs.version = 0.0.11
+rbcs.version = 0.2.0
 
-lys.version = 2025.01.25
+lys.version = 2025.02.08
 
 gitea.maven.url = https://gitea.woggioni.net/api/packages/woggioni/maven
 docker.registry.url=gitea.woggioni.net
 
-jpms-check.configurationName = runtimeClasspath

rbcs-api/build.gradle

@@ -5,6 +5,8 @@ plugins {
 }
 
 dependencies {
+    api catalog.netty.buffer
+    api catalog.netty.handler
 }
 
 publishing {

rbcs-api/src/main/java/module-info.java

@@ -0,0 +1,10 @@
+module net.woggioni.rbcs.api {
+    requires static lombok;
+    requires java.xml;
+    requires io.netty.buffer;
+    requires io.netty.handler;
+    requires io.netty.transport;
+    exports net.woggioni.rbcs.api;
+    exports net.woggioni.rbcs.api.exception;
+    exports net.woggioni.rbcs.api.message;
+}

rbcs-api/src/main/java/net/woggioni/rbcs/api/CacheHandlerFactory.java

@@ -0,0 +1,7 @@
+package net.woggioni.rbcs.api;
+
+import io.netty.channel.ChannelHandler;
+
+public interface CacheHandlerFactory extends AutoCloseable {
+    ChannelHandler newHandler();
+}

rbcs-api/src/main/java/net/woggioni/rbcs/api/CacheProvider.java

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.api;
+package net.woggioni.rbcs.api;
 
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;

rbcs-api/src/main/java/net/woggioni/rbcs/api/CacheValueMetadata.java

@@ -0,0 +1,14 @@
+package net.woggioni.rbcs.api;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+import java.io.Serializable;
+
+@Getter
+@RequiredArgsConstructor
+public class CacheValueMetadata implements Serializable {
+    private final String contentDisposition;
+    private final String mimeType;
+}
+

rbcs-api/src/main/java/net/woggioni/rbcs/api/Configuration.java

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.api;
+package net.woggioni.rbcs.api;
 
 
 import lombok.EqualsAndHashCode;
@@ -56,7 +56,8 @@ public class Configuration {
         @EqualsAndHashCode.Include
         String name;
         Set<Role> roles;
-        Quota quota;
+        Quota groupQuota;
+        Quota userQuota;
     }
 
     @Value
@@ -91,11 +92,14 @@ public class Configuration {
         boolean verifyClients;
     }
 
+    public enum ClientCertificate {
+        REQUIRED, OPTIONAL
+    }
+
     @Value
     public static class Tls {
         KeyStore keyStore;
         TrustStore trustStore;
-        boolean verifyClients;
     }
 
     @Value
@@ -111,6 +115,7 @@ public class Configuration {
         Path file;
         String password;
         boolean checkCertificateStatus;
+        boolean requireClientCertificate;
     }
 
     @Value
@@ -130,7 +135,7 @@ public class Configuration {
     }
 
     public interface Cache {
-        net.woggioni.gbcs.api.Cache materialize();
+        CacheHandlerFactory materialize();
         String getNamespaceURI();
         String getTypeName();
     }

rbcs-api/src/main/java/net/woggioni/rbcs/api/Role.java

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.api;
+package net.woggioni.rbcs.api;
 
 public enum Role {
     Reader, Writer

rbcs-api/src/main/java/net/woggioni/rbcs/api/exception/CacheException.java

@@ -1,6 +1,6 @@
-package net.woggioni.gbcs.api.exception;
+package net.woggioni.rbcs.api.exception;
 
-public class CacheException extends GbcsException {
+public class CacheException extends RbcsException {
     public CacheException(String message, Throwable cause) {
         super(message, cause);
     }

rbcs-api/src/main/java/net/woggioni/rbcs/api/exception/ConfigurationException.java

@@ -1,6 +1,6 @@
-package net.woggioni.gbcs.api.exception;
+package net.woggioni.rbcs.api.exception;
 
-public class ConfigurationException extends GbcsException {
+public class ConfigurationException extends RbcsException {
     public ConfigurationException(String message, Throwable cause) {
         super(message, cause);
     }

rbcs-api/src/main/java/net/woggioni/rbcs/api/exception/ContentTooLargeException.java

@@ -1,6 +1,6 @@
-package net.woggioni.gbcs.api.exception;
+package net.woggioni.rbcs.api.exception;
 
-public class ContentTooLargeException extends GbcsException {
+public class ContentTooLargeException extends RbcsException {
     public ContentTooLargeException(String message, Throwable cause) {
         super(message, cause);
     }

rbcs-api/src/main/java/net/woggioni/rbcs/api/exception/RbcsException.java

@@ -0,0 +1,7 @@
+package net.woggioni.rbcs.api.exception;
+
+public class RbcsException extends RuntimeException {
+    public RbcsException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

rbcs-api/src/main/java/net/woggioni/rbcs/api/message/CacheMessage.java

@@ -0,0 +1,161 @@
+package net.woggioni.rbcs.api.message;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufHolder;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import net.woggioni.rbcs.api.CacheValueMetadata;
+
+public sealed interface CacheMessage {
+
+    @Getter
+    @RequiredArgsConstructor
+    final class CacheGetRequest implements CacheMessage {
+        private final String key;
+    }
+
+    abstract sealed class CacheGetResponse implements CacheMessage {
+    }
+
+    @Getter
+    @RequiredArgsConstructor
+    final class CacheValueFoundResponse extends CacheGetResponse {
+        private final String key;
+        private final CacheValueMetadata metadata;
+    }
+
+    final class CacheValueNotFoundResponse extends CacheGetResponse {
+    }
+
+    @Getter
+    @RequiredArgsConstructor
+    final class CachePutRequest implements CacheMessage {
+        private final String key;
+        private final CacheValueMetadata metadata;
+    }
+
+    @Getter
+    @RequiredArgsConstructor
+    final class CachePutResponse implements CacheMessage {
+        private final String key;
+    }
+
+    @RequiredArgsConstructor
+    non-sealed class CacheContent implements CacheMessage, ByteBufHolder {
+        protected final ByteBuf chunk;
+
+        @Override
+        public ByteBuf content() {
+            return chunk;
+        }
+
+        @Override
+        public CacheContent copy() {
+            return replace(chunk.copy());
+        }
+
+        @Override
+        public CacheContent duplicate() {
+            return new CacheContent(chunk.duplicate());
+        }
+
+        @Override
+        public CacheContent retainedDuplicate() {
+            return new CacheContent(chunk.retainedDuplicate());
+        }
+
+        @Override
+        public CacheContent replace(ByteBuf content) {
+            return new CacheContent(content);
+        }
+
+        @Override
+        public CacheContent retain() {
+            chunk.retain();
+            return this;
+        }
+
+        @Override
+        public CacheContent retain(int increment) {
+            chunk.retain(increment);
+            return this;
+        }
+
+        @Override
+        public CacheContent touch() {
+            chunk.touch();
+            return this;
+        }
+
+        @Override
+        public CacheContent touch(Object hint) {
+            chunk.touch(hint);
+            return this;
+        }
+
+        @Override
+        public int refCnt() {
+            return chunk.refCnt();
+        }
+
+        @Override
+        public boolean release() {
+            return chunk.release();
+        }
+
+        @Override
+        public boolean release(int decrement) {
+            return chunk.release(decrement);
+        }
+    }
+
+    final class LastCacheContent extends CacheContent {
+        public LastCacheContent(ByteBuf chunk) {
+            super(chunk);
+        }
+
+        @Override
+        public LastCacheContent copy() {
+            return replace(chunk.copy());
+        }
+
+        @Override
+        public LastCacheContent duplicate() {
+            return new LastCacheContent(chunk.duplicate());
+        }
+
+        @Override
+        public LastCacheContent retainedDuplicate() {
+            return new LastCacheContent(chunk.retainedDuplicate());
+        }
+
+        @Override
+        public LastCacheContent replace(ByteBuf content) {
+            return new LastCacheContent(chunk);
+        }
+
+        @Override
+        public LastCacheContent retain() {
+            super.retain();
+            return this;
+        }
+
+        @Override
+        public LastCacheContent retain(int increment) {
+            super.retain(increment);
+            return this;
+        }
+
+        @Override
+        public LastCacheContent touch() {
+            super.touch();
+            return this;
+        }
+
+        @Override
+        public LastCacheContent touch(Object hint) {
+            super.touch(hint);
+            return this;
+        }
+    }
+}

rbcs-cli/build.gradle

@@ -17,9 +17,9 @@ import net.woggioni.gradle.graalvm.JlinkPlugin
 import net.woggioni.gradle.graalvm.JlinkTask
 
 Property<String> mainModuleName = objects.property(String.class)
-mainModuleName.set('net.woggioni.gbcs.cli')
+mainModuleName.set('net.woggioni.rbcs.cli')
 Property<String> mainClassName = objects.property(String.class)
-mainClassName.set('net.woggioni.gbcs.cli.GradleBuildCacheServerCli')
+mainClassName.set('net.woggioni.rbcs.cli.RemoteBuildCacheServerCli')
 
 tasks.named(JavaPlugin.COMPILE_JAVA_TASK_NAME, JavaCompile) {
     options.javaModuleMainClass = mainClassName
@@ -44,11 +44,10 @@ envelopeJar {
 dependencies {
     implementation catalog.jwo
     implementation catalog.slf4j.api
-    implementation catalog.netty.codec.http
     implementation catalog.picocli
 
-    implementation project(':gbcs-client')
+    implementation project(':rbcs-client')
-    implementation project(':gbcs-server')
+    implementation project(':rbcs-server')
 
 //    runtimeOnly catalog.slf4j.jdk14
     runtimeOnly catalog.logback.classic
@@ -56,10 +55,10 @@ dependencies {
 }
 
 Provider<EnvelopeJarTask> envelopeJarTaskProvider = tasks.named('envelopeJar', EnvelopeJarTask.class) {
-//    systemProperties['java.util.logging.config.class'] = 'net.woggioni.gbcs.LoggingConfig'
+//    systemProperties['java.util.logging.config.class'] = 'net.woggioni.rbcs.LoggingConfig'
-//    systemProperties['log.config.source'] = 'net/woggioni/gbcs/cli/logging.properties'
+//    systemProperties['log.config.source'] = 'net/woggioni/rbcs/cli/logging.properties'
-//    systemProperties['java.util.logging.config.file'] = 'classpath:net/woggioni/gbcs/cli/logging.properties'
+//    systemProperties['java.util.logging.config.file'] = 'classpath:net/woggioni/rbcs/cli/logging.properties'
-    systemProperties['logback.configurationFile'] = 'classpath:net/woggioni/gbcs/cli/logback.xml'
+    systemProperties['logback.configurationFile'] = 'classpath:net/woggioni/rbcs/cli/logback.xml'
     systemProperties['io.netty.leakDetectionLevel'] = 'DISABLED'
 
 //    systemProperties['org.slf4j.simpleLogger.showDateTime'] = 'true'
@@ -83,7 +82,7 @@ tasks.named(NativeImagePlugin.NATIVE_IMAGE_TASK_NAME, NativeImageTask) {
 
 tasks.named(JlinkPlugin.JLINK_TASK_NAME, JlinkTask) {
     mainClass = mainClassName
-    mainModule = 'net.woggioni.gbcs.cli'
+    mainModule = 'net.woggioni.rbcs.cli'
 }
 
 artifacts {

rbcs-cli/src/main/java/module-info.java

@@ -0,0 +1,17 @@
+module net.woggioni.rbcs.cli {
+    requires org.slf4j;
+    requires net.woggioni.rbcs.server;
+    requires info.picocli;
+    requires net.woggioni.rbcs.common;
+    requires net.woggioni.rbcs.client;
+    requires kotlin.stdlib;
+    requires net.woggioni.jwo;
+    requires net.woggioni.rbcs.api;
+
+    exports net.woggioni.rbcs.cli.impl.converters to info.picocli;
+    opens net.woggioni.rbcs.cli.impl.commands to info.picocli;
+    opens net.woggioni.rbcs.cli.impl to info.picocli;
+    opens net.woggioni.rbcs.cli to info.picocli, net.woggioni.rbcs.common;
+
+    exports net.woggioni.rbcs.cli;
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/RemoteBuildCacheServerCli.kt

@@ -0,0 +1,69 @@
+package net.woggioni.rbcs.cli
+
+import net.woggioni.jwo.Application
+import net.woggioni.rbcs.cli.impl.AbstractVersionProvider
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.cli.impl.commands.BenchmarkCommand
+import net.woggioni.rbcs.cli.impl.commands.ClientCommand
+import net.woggioni.rbcs.cli.impl.commands.GetCommand
+import net.woggioni.rbcs.cli.impl.commands.HealthCheckCommand
+import net.woggioni.rbcs.cli.impl.commands.PasswordHashCommand
+import net.woggioni.rbcs.cli.impl.commands.PutCommand
+import net.woggioni.rbcs.cli.impl.commands.ServerCommand
+import net.woggioni.rbcs.common.RbcsUrlStreamHandlerFactory
+import net.woggioni.rbcs.common.contextLogger
+import picocli.CommandLine
+import picocli.CommandLine.Model.CommandSpec
+
+
+@CommandLine.Command(
+    name = "rbcs", versionProvider = RemoteBuildCacheServerCli.VersionProvider::class
+)
+class RemoteBuildCacheServerCli : RbcsCommand() {
+
+    class VersionProvider : AbstractVersionProvider()
+    companion object {
+        @JvmStatic
+        fun main(vararg args: String) {
+            val currentClassLoader = RemoteBuildCacheServerCli::class.java.classLoader
+            Thread.currentThread().contextClassLoader = currentClassLoader
+            if(currentClassLoader.javaClass.name == "net.woggioni.envelope.loader.ModuleClassLoader") {
+                //We're running in an envelope jar and custom URL protocols won't work
+                RbcsUrlStreamHandlerFactory.install()
+            }
+            val log = contextLogger()
+            val app = Application.builder("rbcs")
+                .configurationDirectoryEnvVar("RBCS_CONFIGURATION_DIR")
+                .configurationDirectoryPropertyKey("net.woggioni.rbcs.conf.dir")
+                .build()
+            val rbcsCli = RemoteBuildCacheServerCli()
+            val commandLine = CommandLine(rbcsCli)
+            commandLine.setExecutionExceptionHandler { ex, cl, parseResult ->
+                log.error(ex.message, ex)
+                CommandLine.ExitCode.SOFTWARE
+            }
+            commandLine.addSubcommand(ServerCommand(app))
+            commandLine.addSubcommand(PasswordHashCommand())
+            commandLine.addSubcommand(
+                CommandLine(ClientCommand(app)).apply {
+                    addSubcommand(BenchmarkCommand())
+                    addSubcommand(PutCommand())
+                    addSubcommand(GetCommand())
+                    addSubcommand(HealthCheckCommand())
+                })
+            System.exit(commandLine.execute(*args))
+        }
+    }
+
+    @CommandLine.Option(names = ["-V", "--version"], versionHelp = true)
+    var versionHelp = false
+        private set
+
+    @CommandLine.Spec
+    private lateinit var spec: CommandSpec
+
+
+    override fun run() {
+        spec.commandLine().usage(System.out);
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/AbstractVersionProvider.kt

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.cli.impl
+package net.woggioni.rbcs.cli.impl
 
 import picocli.CommandLine
 import java.util.jar.Attributes

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/RbcsCommand.kt

@@ -1,11 +1,11 @@
-package net.woggioni.gbcs.cli.impl
+package net.woggioni.rbcs.cli.impl
 
 import net.woggioni.jwo.Application
 import picocli.CommandLine
 import java.nio.file.Path
 
 
-abstract class GbcsCommand : Runnable {
+abstract class RbcsCommand : Runnable {
 
     @CommandLine.Option(names = ["-h", "--help"], usageHelp = true)
     var usageHelp = false

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/BenchmarkCommand.kt

@@ -0,0 +1,172 @@
+package net.woggioni.rbcs.cli.impl.commands
+
+import net.woggioni.jwo.JWO
+import net.woggioni.jwo.LongMath
+import net.woggioni.rbcs.api.CacheValueMetadata
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.cli.impl.converters.ByteSizeConverter
+import net.woggioni.rbcs.client.RemoteBuildCacheClient
+import net.woggioni.rbcs.common.createLogger
+import net.woggioni.rbcs.common.debug
+import net.woggioni.rbcs.common.error
+import net.woggioni.rbcs.common.info
+import picocli.CommandLine
+import java.security.SecureRandom
+import java.time.Duration
+import java.time.Instant
+import java.time.temporal.ChronoUnit
+import java.util.concurrent.LinkedBlockingQueue
+import java.util.concurrent.Semaphore
+import java.util.concurrent.atomic.AtomicLong
+import kotlin.random.Random
+
+@CommandLine.Command(
+    name = "benchmark",
+    description = ["Run a load test against the server"],
+    showDefaultValues = true
+)
+class BenchmarkCommand : RbcsCommand() {
+    companion object{
+        private val log = createLogger<BenchmarkCommand>()
+    }
+
+    @CommandLine.Spec
+    private lateinit var spec: CommandLine.Model.CommandSpec
+
+    @CommandLine.Option(
+        names = ["-e", "--entries"],
+        description = ["Total number of elements to be added to the cache"],
+        paramLabel = "NUMBER_OF_ENTRIES"
+    )
+    private var numberOfEntries = 1000
+
+    @CommandLine.Option(
+        names = ["-s", "--size"],
+        description = ["Size of a cache value in bytes"],
+        paramLabel = "SIZE",
+        converter = [ByteSizeConverter::class]
+    )
+    private var size = 0x1000
+
+    @CommandLine.Option(
+        names = ["-r", "--random"],
+        description = ["Insert completely random byte values"]
+    )
+    private var randomValues = false
+
+    override fun run() {
+        val clientCommand = spec.parent().userObject() as ClientCommand
+        val profile = clientCommand.profileName.let { profileName ->
+            clientCommand.configuration.profiles[profileName]
+                ?: throw IllegalArgumentException("Profile $profileName does not exist in configuration")
+        }
+        val progressThreshold = LongMath.ceilDiv(numberOfEntries.toLong(), 20)
+        RemoteBuildCacheClient(profile).use { client ->
+
+            val entryGenerator = sequence {
+                val random = Random(SecureRandom.getInstance("NativePRNGNonBlocking").nextLong())
+                while (true) {
+                    val key = JWO.bytesToHex(random.nextBytes(16))
+                    val value = if(randomValues) {
+                        random.nextBytes(size)
+                    } else {
+                        val byteValue = random.nextInt().toByte()
+                        ByteArray(size) {_ -> byteValue}
+                    }
+                    yield(key to value)
+                }
+            }
+
+            log.info {
+                "Starting insertion"
+            }
+            val entries = let {
+                val completionCounter = AtomicLong(0)
+                val completionQueue = LinkedBlockingQueue<Pair<String, ByteArray>>(numberOfEntries)
+                val start = Instant.now()
+                val semaphore = Semaphore(profile.maxConnections * 5)
+                val iterator = entryGenerator.take(numberOfEntries).iterator()
+                while (completionCounter.get() < numberOfEntries) {
+                    if (iterator.hasNext()) {
+                        val entry = iterator.next()
+                        semaphore.acquire()
+                        val future = client.put(entry.first, entry.second, CacheValueMetadata(null, null)).thenApply { entry }
+                        future.whenComplete { result, ex ->
+                            if (ex != null) {
+                                log.error(ex.message, ex)
+                            } else {
+                                completionQueue.put(result)
+                            }
+                            semaphore.release()
+                            val completed = completionCounter.incrementAndGet()
+                            if(completed.mod(progressThreshold) == 0L) {
+                                log.debug {
+                                    "Inserted $completed / $numberOfEntries"
+                                }
+                            }
+                        }
+                    } else {
+                        Thread.sleep(Duration.of(500, ChronoUnit.MILLIS))
+                    }
+                }
+
+                val inserted = completionQueue.toList()
+                val end = Instant.now()
+                log.info {
+                    val elapsed = Duration.between(start, end).toMillis()
+                    val opsPerSecond = String.format("%.2f", numberOfEntries.toDouble() / elapsed * 1000)
+                    "Insertion rate: $opsPerSecond ops/s"
+                }
+                inserted
+            }
+            log.info {
+                "Inserted ${entries.size} entries"
+            }
+            log.info {
+                "Starting retrieval"
+            }
+            if (entries.isNotEmpty()) {
+                val completionCounter = AtomicLong(0)
+                val semaphore = Semaphore(profile.maxConnections * 5)
+                val start = Instant.now()
+                val it = entries.iterator()
+                while (completionCounter.get() < entries.size) {
+                    if (it.hasNext()) {
+                        val entry = it.next()
+                        semaphore.acquire()
+                        val future = client.get(entry.first).thenApply {
+                            if (it == null) {
+                                log.error {
+                                    "Missing entry for key '${entry.first}'"
+                                }
+                            } else if (!entry.second.contentEquals(it)) {
+                                log.error {
+                                    "Retrieved a value different from what was inserted for key '${entry.first}'"
+                                }
+                            }
+                        }
+                        future.whenComplete { _, _ ->
+                            val completed = completionCounter.incrementAndGet()
+                            if(completed.mod(progressThreshold) == 0L) {
+                                log.debug {
+                                    "Retrieved $completed / ${entries.size}"
+                                }
+                            }
+                            semaphore.release()
+                        }
+                    } else {
+                        Thread.sleep(Duration.of(500, ChronoUnit.MILLIS))
+                    }
+                }
+                val end = Instant.now()
+                log.info {
+                    val elapsed = Duration.between(start, end).toMillis()
+                    val opsPerSecond = String.format("%.2f", entries.size.toDouble() / elapsed * 1000)
+                    "Retrieval rate: $opsPerSecond ops/s"
+                }
+            } else {
+                log.error("Skipping retrieval benchmark as it was not possible to insert any entry in the cache")
+            }
+        }
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/ClientCommand.kt

@@ -1,24 +1,24 @@
-package net.woggioni.gbcs.cli.impl.commands
+package net.woggioni.rbcs.cli.impl.commands
 
-import net.woggioni.gbcs.cli.impl.GbcsCommand
-import net.woggioni.gbcs.client.GradleBuildCacheClient
 import net.woggioni.jwo.Application
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.client.RemoteBuildCacheClient
 import picocli.CommandLine
 import java.nio.file.Path
 
 @CommandLine.Command(
     name = "client",
-    description = ["GBCS client"],
+    description = ["RBCS client"],
     showDefaultValues = true
 )
-class ClientCommand(app : Application) : GbcsCommand() {
+class ClientCommand(app : Application) : RbcsCommand() {
 
     @CommandLine.Option(
         names = ["-c", "--configuration"],
         description = ["Path to the client configuration file"],
         paramLabel = "CONFIGURATION_FILE"
     )
-    private var configurationFile : Path = findConfigurationFile(app, "gbcs-client.xml")
+    private var configurationFile : Path = findConfigurationFile(app, "rbcs-client.xml")
 
     @CommandLine.Option(
         names = ["-p", "--profile"],
@@ -28,8 +28,8 @@ class ClientCommand(app : Application) : GbcsCommand() {
     )
     var profileName : String? = null
 
-    val configuration : GradleBuildCacheClient.Configuration by lazy {
+    val configuration : RemoteBuildCacheClient.Configuration by lazy {
-        GradleBuildCacheClient.Configuration.parse(configurationFile)
+        RemoteBuildCacheClient.Configuration.parse(configurationFile)
     }
 
     override fun run() {

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/GetCommand.kt

@@ -1,8 +1,8 @@
-package net.woggioni.gbcs.cli.impl.commands
+package net.woggioni.rbcs.cli.impl.commands
 
-import net.woggioni.gbcs.common.contextLogger
+import net.woggioni.rbcs.cli.impl.RbcsCommand
-import net.woggioni.gbcs.cli.impl.GbcsCommand
+import net.woggioni.rbcs.client.RemoteBuildCacheClient
-import net.woggioni.gbcs.client.GradleBuildCacheClient
+import net.woggioni.rbcs.common.createLogger
 import picocli.CommandLine
 import java.nio.file.Files
 import java.nio.file.Path
@@ -12,8 +12,10 @@ import java.nio.file.Path
     description = ["Fetch a value from the cache with the specified key"],
     showDefaultValues = true
 )
-class GetCommand : GbcsCommand() {
+class GetCommand : RbcsCommand() {
-    private val log = contextLogger()
+    companion object{
+        private val log = createLogger<GetCommand>()
+    }
 
     @CommandLine.Spec
     private lateinit var spec: CommandLine.Model.CommandSpec
@@ -38,7 +40,7 @@ class GetCommand : GbcsCommand() {
             clientCommand.configuration.profiles[profileName]
                 ?: throw IllegalArgumentException("Profile $profileName does not exist in configuration")
         }
-        GradleBuildCacheClient(profile).use { client ->
+        RemoteBuildCacheClient(profile).use { client ->
             client.get(key).thenApply { value ->
                 value?.let {
                     (output?.let(Files::newOutputStream) ?: System.out).use {

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/HealthCheckCommand.kt

@@ -0,0 +1,48 @@
+package net.woggioni.rbcs.cli.impl.commands
+
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.client.RemoteBuildCacheClient
+import net.woggioni.rbcs.common.createLogger
+import picocli.CommandLine
+import java.security.SecureRandom
+import kotlin.random.Random
+
+@CommandLine.Command(
+    name = "health",
+    description = ["Check server health"],
+    showDefaultValues = true
+)
+class HealthCheckCommand : RbcsCommand() {
+    companion object{
+        private val log = createLogger<HealthCheckCommand>()
+    }
+
+    @CommandLine.Spec
+    private lateinit var spec: CommandLine.Model.CommandSpec
+
+    override fun run() {
+        val clientCommand = spec.parent().userObject() as ClientCommand
+        val profile = clientCommand.profileName.let { profileName ->
+            clientCommand.configuration.profiles[profileName]
+                ?: throw IllegalArgumentException("Profile $profileName does not exist in configuration")
+        }
+        RemoteBuildCacheClient(profile).use { client ->
+            val random = Random(SecureRandom.getInstance("NativePRNGNonBlocking").nextLong())
+            val nonce = ByteArray(0xa0)
+            random.nextBytes(nonce)
+            client.healthCheck(nonce).thenApply { value ->
+                if(value == null) {
+                    throw IllegalStateException("Empty response from server")
+                }
+                val offset = value.size - nonce.size
+                for(i in 0 until nonce.size) {
+                    val a = nonce[i]
+                    val b = value[offset + i]
+                    if(a != b) {
+                        throw IllegalStateException("Server nonce does not match")
+                    }
+                }
+            }.get()
+        }
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/PasswordHashCommand.kt

@@ -1,9 +1,9 @@
-package net.woggioni.gbcs.cli.impl.commands
+package net.woggioni.rbcs.cli.impl.commands
 
-import net.woggioni.gbcs.common.PasswordSecurity.hashPassword
-import net.woggioni.gbcs.cli.impl.GbcsCommand
-import net.woggioni.gbcs.cli.impl.converters.OutputStreamConverter
 import net.woggioni.jwo.UncloseableOutputStream
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.cli.impl.converters.OutputStreamConverter
+import net.woggioni.rbcs.common.PasswordSecurity.hashPassword
 import picocli.CommandLine
 import java.io.OutputStream
 import java.io.OutputStreamWriter
@@ -12,10 +12,10 @@ import java.io.PrintWriter
 
 @CommandLine.Command(
     name = "password",
-    description = ["Generate a password hash to add to GBCS configuration file"],
+    description = ["Generate a password hash to add to RBCS configuration file"],
     showDefaultValues = true
 )
-class PasswordHashCommand : GbcsCommand() {
+class PasswordHashCommand : RbcsCommand() {
     @CommandLine.Option(
         names = ["-o", "--output-file"],
         description = ["Write the output to a file instead of stdout"],

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/PutCommand.kt

@@ -0,0 +1,101 @@
+package net.woggioni.rbcs.cli.impl.commands
+
+import net.woggioni.jwo.Hash
+import net.woggioni.jwo.JWO
+import net.woggioni.jwo.NullOutputStream
+import net.woggioni.rbcs.api.CacheValueMetadata
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.client.RemoteBuildCacheClient
+import net.woggioni.rbcs.common.createLogger
+import picocli.CommandLine
+import java.io.InputStream
+import java.nio.file.Files
+import java.nio.file.Path
+import java.util.UUID
+
+@CommandLine.Command(
+    name = "put",
+    description = ["Add or replace a value to the cache with the specified key"],
+    showDefaultValues = true
+)
+class PutCommand : RbcsCommand() {
+    companion object{
+        private val log = createLogger<PutCommand>()
+    }
+
+
+    @CommandLine.Spec
+    private lateinit var spec: CommandLine.Model.CommandSpec
+
+    @CommandLine.Option(
+        names = ["-k", "--key"],
+        description = ["The key for the new value, randomly generated if omitted"],
+        paramLabel = "KEY"
+    )
+    private var key : String? = null
+
+    @CommandLine.Option(
+        names = ["-i", "--inline"],
+        description = ["File is to be displayed in the browser"],
+        paramLabel = "INLINE",
+    )
+    private var inline : Boolean = false
+
+    @CommandLine.Option(
+        names = ["-t", "--type"],
+        description = ["File mime type"],
+        paramLabel = "MIME_TYPE",
+    )
+    private var mimeType : String? = null
+
+    @CommandLine.Option(
+        names = ["-v", "--value"],
+        description = ["Path to a file containing the value to be added (defaults to stdin)"],
+        paramLabel = "VALUE_FILE",
+    )
+    private var value : Path? = null
+
+    override fun run() {
+        val clientCommand = spec.parent().userObject() as ClientCommand
+        val profile = clientCommand.profileName.let { profileName ->
+            clientCommand.configuration.profiles[profileName]
+                ?: throw IllegalArgumentException("Profile $profileName does not exist in configuration")
+        }
+        RemoteBuildCacheClient(profile).use { client ->
+            val inputStream : InputStream
+            val mimeType : String?
+            val contentDisposition : String?
+            val valuePath = value
+            val actualKey : String?
+            if(valuePath != null) {
+                inputStream = Files.newInputStream(valuePath)
+                mimeType = this.mimeType ?: Files.probeContentType(valuePath)
+                contentDisposition = if(inline) {
+                    "inline"
+                } else {
+                    "attachment; filename=\"${valuePath.fileName}\""
+                }
+                actualKey = key ?: let {
+                    val md = Hash.Algorithm.SHA512.newInputStream(Files.newInputStream(valuePath)).use {
+                        JWO.copy(it, NullOutputStream())
+                        it.messageDigest
+                    }
+                    UUID.nameUUIDFromBytes(md.digest()).toString()
+                }
+            } else {
+                inputStream = System.`in`
+                mimeType = this.mimeType
+                contentDisposition = if(inline) {
+                    "inline"
+                } else {
+                    null
+                }
+                actualKey = key ?: UUID.randomUUID().toString()
+            }
+            inputStream.use {
+                client.put(actualKey, it.readAllBytes(), CacheValueMetadata(contentDisposition, mimeType))
+            }.get()
+            println(profile.serverURI.resolve(actualKey))
+        }
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/commands/ServerCommand.kt

@@ -0,0 +1,87 @@
+package net.woggioni.rbcs.cli.impl.commands
+
+import net.woggioni.jwo.Application
+import net.woggioni.jwo.JWO
+import net.woggioni.rbcs.cli.impl.RbcsCommand
+import net.woggioni.rbcs.cli.impl.converters.DurationConverter
+import net.woggioni.rbcs.common.createLogger
+import net.woggioni.rbcs.common.debug
+import net.woggioni.rbcs.common.info
+import net.woggioni.rbcs.server.RemoteBuildCacheServer
+import net.woggioni.rbcs.server.RemoteBuildCacheServer.Companion.DEFAULT_CONFIGURATION_URL
+import picocli.CommandLine
+import java.io.ByteArrayOutputStream
+import java.nio.file.Files
+import java.nio.file.Path
+import java.time.Duration
+import java.util.concurrent.TimeUnit
+
+@CommandLine.Command(
+    name = "server",
+    description = ["RBCS server"],
+    showDefaultValues = true
+)
+class ServerCommand(app : Application) : RbcsCommand() {
+    companion object {
+        private val log = createLogger<ServerCommand>()
+    }
+
+    private fun createDefaultConfigurationFile(configurationFile: Path) {
+        log.info {
+            "Creating default configuration file at '$configurationFile'"
+        }
+        val defaultConfigurationFileResource = DEFAULT_CONFIGURATION_URL
+        Files.newOutputStream(configurationFile).use { outputStream ->
+            defaultConfigurationFileResource.openStream().use { inputStream ->
+                JWO.copy(inputStream, outputStream)
+            }
+        }
+    }
+
+    @CommandLine.Option(
+        names = ["-t", "--timeout"],
+        description = ["Exit after the specified time"],
+        paramLabel = "TIMEOUT",
+        converter = [DurationConverter::class]
+    )
+    private var timeout: Duration? = null
+
+    @CommandLine.Option(
+        names = ["-c", "--config-file"],
+        description = ["Read the application configuration from this file"],
+        paramLabel = "CONFIG_FILE"
+    )
+    private var configurationFile: Path = findConfigurationFile(app, "rbcs-server.xml")
+
+    override fun run() {
+        if (!Files.exists(configurationFile)) {
+            Files.createDirectories(configurationFile.parent)
+            createDefaultConfigurationFile(configurationFile)
+        }
+
+        val configuration = RemoteBuildCacheServer.loadConfiguration(configurationFile)
+        log.debug {
+            ByteArrayOutputStream().also {
+                RemoteBuildCacheServer.dumpConfiguration(configuration, it)
+            }.let {
+                "Server configuration:\n${String(it.toByteArray())}"
+            }
+        }
+        val server = RemoteBuildCacheServer(configuration)
+        val handle = server.run()
+        val shutdownHook = Thread.ofPlatform().unstarted {
+            handle.sendShutdownSignal()
+            try {
+                handle.get(60, TimeUnit.SECONDS)
+            } catch (ex : Throwable) {
+                log.warn(ex.message, ex)
+            }
+        }
+        Runtime.getRuntime().addShutdownHook(shutdownHook)
+        if(timeout != null) {
+            Thread.sleep(timeout)
+            handle.sendShutdownSignal()
+        }
+        handle.get()
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/converters/ByteSizeConverter.kt

@@ -0,0 +1,10 @@
+package net.woggioni.rbcs.cli.impl.converters
+
+import picocli.CommandLine
+
+
+class ByteSizeConverter : CommandLine.ITypeConverter<Int> {
+    override fun convert(value: String): Int {
+        return Integer.decode(value)
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/converters/DurationConverter.kt

@@ -0,0 +1,11 @@
+package net.woggioni.rbcs.cli.impl.converters
+
+import picocli.CommandLine
+import java.time.Duration
+
+
+class DurationConverter : CommandLine.ITypeConverter<Duration> {
+    override fun convert(value: String): Duration {
+        return Duration.parse(value)
+    }
+}

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/converters/InputStreamConverter.kt

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.cli.impl.converters
+package net.woggioni.rbcs.cli.impl.converters
 
 import picocli.CommandLine
 import java.io.InputStream

rbcs-cli/src/main/kotlin/net/woggioni/rbcs/cli/impl/converters/OutputStreamConverter.kt

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.cli.impl.converters
+package net.woggioni.rbcs.cli.impl.converters
 
 import picocli.CommandLine
 import java.io.OutputStream

rbcs-cli/src/main/resources/net/woggioni/rbcs/cli/logback.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE configuration>
+
+<configuration>
+    <import class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"/>
+    <import class="ch.qos.logback.core.ConsoleAppender"/>
+
+    <appender name="console" class="ConsoleAppender">
+        <target>System.err</target>
+        <encoder class="PatternLayoutEncoder">
+            <pattern>%d [%highlight(%-5level)] \(%thread\) %logger{36} -%kvp- %msg %n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="console"/>
+    </root>
+</configuration>

rbcs-client/build.gradle

@@ -0,0 +1,19 @@
+plugins {
+    id 'java-library'
+    alias catalog.plugins.kotlin.jvm
+}
+
+dependencies {
+    implementation project(':rbcs-api')
+    implementation project(':rbcs-common')
+    implementation catalog.slf4j.api
+    implementation catalog.netty.buffer
+    implementation catalog.netty.handler
+    implementation catalog.netty.transport
+    implementation catalog.netty.common
+    implementation catalog.netty.codec.http
+
+    testRuntimeOnly catalog.logback.classic
+}
+
+

rbcs-client/src/main/java/module-info.java

@@ -1,4 +1,4 @@
-module net.woggioni.gbcs.client {
+module net.woggioni.rbcs.client {
     requires io.netty.handler;
     requires io.netty.codec.http;
     requires io.netty.transport;
@@ -6,12 +6,12 @@ module net.woggioni.gbcs.client {
     requires io.netty.common;
     requires io.netty.buffer;
     requires java.xml;
-    requires net.woggioni.gbcs.common;
+    requires net.woggioni.rbcs.common;
-    requires net.woggioni.gbcs.api;
+    requires net.woggioni.rbcs.api;
     requires io.netty.codec;
     requires org.slf4j;
 
-    exports net.woggioni.gbcs.client;
+    exports net.woggioni.rbcs.client;
 
-    opens net.woggioni.gbcs.client.schema;
+    opens net.woggioni.rbcs.client.schema;
 }

rbcs-client/src/main/kotlin/net/woggioni/rbcs/client/Client.kt

@@ -0,0 +1,457 @@
+package net.woggioni.rbcs.client
+
+import io.netty.bootstrap.Bootstrap
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.Unpooled
+import io.netty.channel.Channel
+import io.netty.channel.ChannelHandler
+import io.netty.channel.ChannelHandlerContext
+import io.netty.channel.ChannelInboundHandlerAdapter
+import io.netty.channel.ChannelOption
+import io.netty.channel.ChannelPipeline
+import io.netty.channel.SimpleChannelInboundHandler
+import io.netty.channel.nio.NioEventLoopGroup
+import io.netty.channel.pool.AbstractChannelPoolHandler
+import io.netty.channel.pool.ChannelPool
+import io.netty.channel.pool.FixedChannelPool
+import io.netty.channel.socket.nio.NioSocketChannel
+import io.netty.handler.codec.DecoderException
+import io.netty.handler.codec.http.DefaultFullHttpRequest
+import io.netty.handler.codec.http.FullHttpRequest
+import io.netty.handler.codec.http.FullHttpResponse
+import io.netty.handler.codec.http.HttpClientCodec
+import io.netty.handler.codec.http.HttpContentDecompressor
+import io.netty.handler.codec.http.HttpHeaderNames
+import io.netty.handler.codec.http.HttpHeaderValues
+import io.netty.handler.codec.http.HttpMethod
+import io.netty.handler.codec.http.HttpObjectAggregator
+import io.netty.handler.codec.http.HttpResponseStatus
+import io.netty.handler.codec.http.HttpVersion
+import io.netty.handler.ssl.SslContext
+import io.netty.handler.ssl.SslContextBuilder
+import io.netty.handler.stream.ChunkedWriteHandler
+import io.netty.handler.timeout.IdleState
+import io.netty.handler.timeout.IdleStateEvent
+import io.netty.handler.timeout.IdleStateHandler
+import io.netty.util.concurrent.Future
+import io.netty.util.concurrent.GenericFutureListener
+import net.woggioni.rbcs.api.CacheValueMetadata
+import net.woggioni.rbcs.client.impl.Parser
+import net.woggioni.rbcs.common.Xml
+import net.woggioni.rbcs.common.createLogger
+import net.woggioni.rbcs.common.debug
+import net.woggioni.rbcs.common.trace
+import java.io.IOException
+import java.net.InetSocketAddress
+import java.net.URI
+import java.nio.file.Files
+import java.nio.file.Path
+import java.security.PrivateKey
+import java.security.cert.X509Certificate
+import java.time.Duration
+import java.util.Base64
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.TimeUnit
+import java.util.concurrent.TimeoutException
+import java.util.concurrent.atomic.AtomicInteger
+import kotlin.random.Random
+import io.netty.util.concurrent.Future as NettyFuture
+
+class RemoteBuildCacheClient(private val profile: Configuration.Profile) : AutoCloseable {
+    companion object{
+        private val log = createLogger<RemoteBuildCacheClient>()
+    }
+
+    private val group: NioEventLoopGroup
+    private var sslContext: SslContext
+    private val pool: ChannelPool
+
+    data class Configuration(
+        val profiles: Map<String, Profile>
+    ) {
+        sealed class Authentication {
+            data class TlsClientAuthenticationCredentials(
+                val key: PrivateKey,
+                val certificateChain: Array<X509Certificate>
+            ) : Authentication()
+
+            data class BasicAuthenticationCredentials(val username: String, val password: String) : Authentication()
+        }
+
+        class RetryPolicy(
+            val maxAttempts: Int,
+            val initialDelayMillis: Long,
+            val exp: Double
+        )
+
+        class Connection(
+            val readTimeout: Duration,
+            val writeTimeout: Duration,
+            val idleTimeout: Duration,
+            val readIdleTimeout: Duration,
+            val writeIdleTimeout: Duration
+        )
+
+        data class Profile(
+            val serverURI: URI,
+            val connection: Connection?,
+            val authentication: Authentication?,
+            val connectionTimeout: Duration?,
+            val maxConnections: Int,
+            val compressionEnabled: Boolean,
+            val retryPolicy: RetryPolicy?,
+        )
+
+        companion object {
+            fun parse(path: Path): Configuration {
+                return Files.newInputStream(path).use {
+                    Xml.parseXml(path.toUri().toURL(), it)
+                }.let(Parser::parse)
+            }
+        }
+    }
+
+    init {
+        group = NioEventLoopGroup()
+        sslContext = SslContextBuilder.forClient().also { builder ->
+            (profile.authentication as? Configuration.Authentication.TlsClientAuthenticationCredentials)?.let { tlsClientAuthenticationCredentials ->
+                builder.keyManager(
+                    tlsClientAuthenticationCredentials.key,
+                    *tlsClientAuthenticationCredentials.certificateChain
+                )
+            }
+        }.build()
+
+        val (scheme, host, port) = profile.serverURI.run {
+            Triple(
+                if (scheme == null) "http" else profile.serverURI.scheme,
+                host,
+                port.takeIf { it > 0 } ?: if ("https" == scheme.lowercase()) 443 else 80
+            )
+        }
+
+        val bootstrap = Bootstrap().apply {
+            group(group)
+            channel(NioSocketChannel::class.java)
+            option(ChannelOption.TCP_NODELAY, true)
+            option(ChannelOption.SO_KEEPALIVE, true)
+            remoteAddress(InetSocketAddress(host, port))
+            profile.connectionTimeout?.let {
+                option(ChannelOption.CONNECT_TIMEOUT_MILLIS, it.toMillis().toInt())
+            }
+        }
+        val channelPoolHandler = object : AbstractChannelPoolHandler() {
+
+            @Volatile
+            private var connectionCount = AtomicInteger()
+
+            @Volatile
+            private var leaseCount = AtomicInteger()
+
+            override fun channelReleased(ch: Channel) {
+                val activeLeases = leaseCount.decrementAndGet()
+                log.trace {
+                    "Released channel ${ch.id().asShortText()}, number of active leases: $activeLeases"
+                }
+            }
+
+            override fun channelAcquired(ch: Channel) {
+                val activeLeases = leaseCount.getAndIncrement()
+                log.trace {
+                    "Acquired channel ${ch.id().asShortText()}, number of active leases: $activeLeases"
+                }
+            }
+
+            override fun channelCreated(ch: Channel) {
+                val connectionId = connectionCount.incrementAndGet()
+                log.debug {
+                    "Created connection ${ch.id().asShortText()}, total number of active connections: $connectionId"
+                }
+                ch.closeFuture().addListener {
+                    val activeConnections = connectionCount.decrementAndGet()
+                    log.debug {
+                        "Closed connection ${
+                            ch.id().asShortText()
+                        }, total number of active connections: $activeConnections"
+                    }
+                }
+                val pipeline: ChannelPipeline = ch.pipeline()
+
+                profile.connection?.also { conn ->
+                    val readTimeout = conn.readTimeout.toMillis()
+                    val writeTimeout = conn.writeTimeout.toMillis()
+                    if (readTimeout > 0 || writeTimeout > 0) {
+                        pipeline.addLast(
+                            IdleStateHandler(
+                                false,
+                                readTimeout,
+                                writeTimeout,
+                                0,
+                                TimeUnit.MILLISECONDS
+                            )
+                        )
+                    }
+                    val readIdleTimeout = conn.readIdleTimeout.toMillis()
+                    val writeIdleTimeout = conn.writeIdleTimeout.toMillis()
+                    val idleTimeout = conn.idleTimeout.toMillis()
+                    if (readIdleTimeout > 0 || writeIdleTimeout > 0 || idleTimeout > 0) {
+                        pipeline.addLast(
+                            IdleStateHandler(
+                                true,
+                                readIdleTimeout,
+                                writeIdleTimeout,
+                                idleTimeout,
+                                TimeUnit.MILLISECONDS
+                            )
+                        )
+                    }
+                }
+
+                // Add SSL handler if needed
+                if ("https".equals(scheme, ignoreCase = true)) {
+                    pipeline.addLast("ssl", sslContext.newHandler(ch.alloc(), host, port))
+                }
+
+                // HTTP handlers
+                pipeline.addLast("codec", HttpClientCodec())
+                if(profile.compressionEnabled) {
+                    pipeline.addLast("decompressor", HttpContentDecompressor())
+                }
+                pipeline.addLast("aggregator", HttpObjectAggregator(134217728))
+                pipeline.addLast("chunked", ChunkedWriteHandler())
+            }
+        }
+        pool = FixedChannelPool(bootstrap, channelPoolHandler, profile.maxConnections)
+    }
+
+    private fun executeWithRetry(operation: () -> CompletableFuture<FullHttpResponse>): CompletableFuture<FullHttpResponse> {
+        val retryPolicy = profile.retryPolicy
+        return if (retryPolicy != null) {
+            val outcomeHandler = OutcomeHandler<FullHttpResponse> { outcome ->
+                when (outcome) {
+                    is OperationOutcome.Success -> {
+                        val response = outcome.result
+                        val status = response.status()
+                        when (status) {
+                            HttpResponseStatus.TOO_MANY_REQUESTS -> {
+                                val retryAfter = response.headers()[HttpHeaderNames.RETRY_AFTER]?.let { headerValue ->
+                                    try {
+                                        headerValue.toLong() * 1000
+                                    } catch (nfe: NumberFormatException) {
+                                        null
+                                    }
+                                }
+                                OutcomeHandlerResult.Retry(retryAfter)
+                            }
+
+                            HttpResponseStatus.INTERNAL_SERVER_ERROR, HttpResponseStatus.SERVICE_UNAVAILABLE ->
+                                OutcomeHandlerResult.Retry()
+
+                            else -> OutcomeHandlerResult.DoNotRetry()
+                        }
+                    }
+
+                    is OperationOutcome.Failure -> {
+                        OutcomeHandlerResult.Retry()
+                    }
+                }
+            }
+            executeWithRetry(
+                group,
+                retryPolicy.maxAttempts,
+                retryPolicy.initialDelayMillis.toDouble(),
+                retryPolicy.exp,
+                outcomeHandler,
+                Random.Default,
+                operation
+            )
+        } else {
+            operation()
+        }
+    }
+
+    fun healthCheck(nonce: ByteArray): CompletableFuture<ByteArray?> {
+        return executeWithRetry {
+            sendRequest(profile.serverURI, HttpMethod.TRACE, nonce)
+        }.thenApply {
+            val status = it.status()
+            if (it.status() != HttpResponseStatus.OK) {
+                throw HttpException(status)
+            } else {
+                it.content()
+            }
+        }.thenApply { maybeByteBuf ->
+            maybeByteBuf?.let {
+                val result = ByteArray(it.readableBytes())
+                it.getBytes(0, result)
+                result
+            }
+        }
+    }
+
+    fun get(key: String): CompletableFuture<ByteArray?> {
+        return executeWithRetry {
+            sendRequest(profile.serverURI.resolve(key), HttpMethod.GET, null)
+        }.thenApply {
+            val status = it.status()
+            if (it.status() == HttpResponseStatus.NOT_FOUND) {
+                null
+            } else if (it.status() != HttpResponseStatus.OK) {
+                throw HttpException(status)
+            } else {
+                it.content()
+            }
+        }.thenApply { maybeByteBuf ->
+            maybeByteBuf?.let {
+                val result = ByteArray(it.readableBytes())
+                it.getBytes(0, result)
+                result
+            }
+        }
+    }
+
+    fun put(key: String, content: ByteArray, metadata: CacheValueMetadata): CompletableFuture<Unit> {
+        return executeWithRetry {
+            val extraHeaders = sequenceOf(
+                metadata.mimeType?.let { HttpHeaderNames.CONTENT_TYPE to it },
+                metadata.contentDisposition?.let { HttpHeaderNames.CONTENT_DISPOSITION to it }
+            ).filterNotNull()
+            sendRequest(profile.serverURI.resolve(key), HttpMethod.PUT, content, extraHeaders.asIterable())
+        }.thenApply {
+            val status = it.status()
+            if (it.status() != HttpResponseStatus.CREATED && it.status() != HttpResponseStatus.OK) {
+                throw HttpException(status)
+            }
+        }
+    }
+
+    private fun sendRequest(
+        uri: URI,
+        method: HttpMethod,
+        body: ByteArray?,
+        extraHeaders: Iterable<Pair<CharSequence, CharSequence>>? = null
+    ): CompletableFuture<FullHttpResponse> {
+        val responseFuture = CompletableFuture<FullHttpResponse>()
+        // Custom handler for processing responses
+
+        pool.acquire().addListener(object : GenericFutureListener<NettyFuture<Channel>> {
+            private val handlers = mutableListOf<ChannelHandler>()
+
+            fun cleanup(channel: Channel, pipeline: ChannelPipeline) {
+                handlers.forEach(pipeline::remove)
+                pool.release(channel)
+            }
+
+            override fun operationComplete(channelFuture: Future<Channel>) {
+                if (channelFuture.isSuccess) {
+                    val channel = channelFuture.now
+                    val pipeline = channel.pipeline()
+                    val timeoutHandler = object : ChannelInboundHandlerAdapter() {
+                        override fun userEventTriggered(ctx: ChannelHandlerContext, evt: Any) {
+                            if (evt is IdleStateEvent) {
+                                val te = when (evt.state()) {
+                                    IdleState.READER_IDLE -> TimeoutException(
+                                        "Read timeout",
+                                    )
+
+                                    IdleState.WRITER_IDLE -> TimeoutException("Write timeout")
+
+                                    IdleState.ALL_IDLE -> TimeoutException("Idle timeout")
+                                    null -> throw IllegalStateException("This should never happen")
+                                }
+                                responseFuture.completeExceptionally(te)
+                                ctx.close()
+                            }
+                        }
+                    }
+                    val closeListener = GenericFutureListener<Future<Void>> {
+                        responseFuture.completeExceptionally(IOException("The remote server closed the connection"))
+                        pool.release(channel)
+                    }
+
+                    val responseHandler = object : SimpleChannelInboundHandler<FullHttpResponse>() {
+                        override fun channelRead0(
+                            ctx: ChannelHandlerContext,
+                            response: FullHttpResponse
+                        ) {
+                            channel.closeFuture().removeListener(closeListener)
+                            cleanup(channel, pipeline)
+                            responseFuture.complete(response)
+                        }
+
+                        override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
+                            ctx.newPromise()
+                            val ex = when (cause) {
+                                is DecoderException -> cause.cause
+                                else -> cause
+                            }
+                            responseFuture.completeExceptionally(ex)
+                            ctx.close()
+                        }
+
+                        override fun channelInactive(ctx: ChannelHandlerContext) {
+                            pool.release(channel)
+                            responseFuture.completeExceptionally(IOException("The remote server closed the connection"))
+                            super.channelInactive(ctx)
+                        }
+                    }
+                    for (handler in arrayOf(timeoutHandler, responseHandler)) {
+                        handlers.add(handler)
+                    }
+                    pipeline.addLast(timeoutHandler, responseHandler)
+                    channel.closeFuture().addListener(closeListener)
+
+
+                    // Prepare the HTTP request
+                    val request: FullHttpRequest = let {
+                        val content: ByteBuf? = body?.takeIf(ByteArray::isNotEmpty)?.let(Unpooled::wrappedBuffer)
+                        DefaultFullHttpRequest(
+                            HttpVersion.HTTP_1_1,
+                            method,
+                            uri.rawPath,
+                            content ?: Unpooled.buffer(0)
+                        ).apply {
+                            headers().apply {
+                                if (content != null) {
+                                    set(HttpHeaderNames.CONTENT_LENGTH, content.readableBytes())
+                                }
+                                set(HttpHeaderNames.HOST, profile.serverURI.host)
+                                set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE)
+                                if(profile.compressionEnabled) {
+                                    set(
+                                        HttpHeaderNames.ACCEPT_ENCODING,
+                                        HttpHeaderValues.GZIP.toString() + "," + HttpHeaderValues.DEFLATE.toString()
+                                    )
+                                }
+                                extraHeaders?.forEach { (k, v) ->
+                                    add(k, v)
+                                }
+                                // Add basic auth if configured
+                                (profile.authentication as? Configuration.Authentication.BasicAuthenticationCredentials)?.let { credentials ->
+                                    val auth = "${credentials.username}:${credentials.password}"
+                                    val encodedAuth = Base64.getEncoder().encodeToString(auth.toByteArray())
+                                    set(HttpHeaderNames.AUTHORIZATION, "Basic $encodedAuth")
+                                }
+                            }
+                        }
+                    }
+
+                    // Set headers
+                    // Send the request
+                    channel.writeAndFlush(request)
+                } else {
+                    responseFuture.completeExceptionally(channelFuture.cause())
+                }
+            }
+        })
+        return responseFuture
+    }
+
+    fun shutDown(): NettyFuture<*> {
+        return group.shutdownGracefully()
+    }
+
+    override fun close() {
+        shutDown().sync()
+    }
+}

rbcs-client/src/main/kotlin/net/woggioni/rbcs/client/Exception.kt

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.client
+package net.woggioni.rbcs.client
 
 import io.netty.handler.codec.http.HttpResponseStatus
 

rbcs-client/src/main/kotlin/net/woggioni/rbcs/client/impl/Parser.kt

@@ -0,0 +1,136 @@
+package net.woggioni.rbcs.client.impl
+
+import net.woggioni.rbcs.api.exception.ConfigurationException
+import net.woggioni.rbcs.client.RemoteBuildCacheClient
+import net.woggioni.rbcs.common.Xml.Companion.asIterable
+import net.woggioni.rbcs.common.Xml.Companion.renderAttribute
+import org.w3c.dom.Document
+import java.net.URI
+import java.nio.file.Files
+import java.nio.file.Path
+import java.security.KeyStore
+import java.security.PrivateKey
+import java.security.cert.X509Certificate
+import java.time.Duration
+import java.time.temporal.ChronoUnit
+
+object Parser {
+
+    fun parse(document: Document): RemoteBuildCacheClient.Configuration {
+        val root = document.documentElement
+        val profiles = mutableMapOf<String, RemoteBuildCacheClient.Configuration.Profile>()
+
+        for (child in root.asIterable()) {
+            val tagName = child.localName
+            when (tagName) {
+                "profile" -> {
+                    val name =
+                        child.renderAttribute("name") ?: throw ConfigurationException("name attribute is required")
+                    val uri = child.renderAttribute("base-url")?.let(::URI)
+                        ?: throw ConfigurationException("base-url attribute is required")
+                    var authentication: RemoteBuildCacheClient.Configuration.Authentication? = null
+                    var retryPolicy: RemoteBuildCacheClient.Configuration.RetryPolicy? = null
+                    var connection : RemoteBuildCacheClient.Configuration.Connection? = null
+                    for (gchild in child.asIterable()) {
+                        when (gchild.localName) {
+                            "tls-client-auth" -> {
+                                val keyStoreFile = gchild.renderAttribute("key-store-file")
+                                val keyStorePassword =
+                                    gchild.renderAttribute("key-store-password")
+                                val keyAlias = gchild.renderAttribute("key-alias")
+                                val keyPassword = gchild.renderAttribute("key-password")
+
+                                val keystore = KeyStore.getInstance("PKCS12").apply {
+                                    Files.newInputStream(Path.of(keyStoreFile)).use {
+                                        load(it, keyStorePassword?.toCharArray())
+                                    }
+                                }
+                                val key = keystore.getKey(keyAlias, keyPassword?.toCharArray()) as PrivateKey
+                                val certChain = keystore.getCertificateChain(keyAlias).asSequence()
+                                    .map { it as X509Certificate }
+                                    .toList()
+                                    .toTypedArray()
+                                authentication =
+                                    RemoteBuildCacheClient.Configuration.Authentication.TlsClientAuthenticationCredentials(
+                                        key,
+                                        certChain
+                                    )
+                            }
+
+                            "basic-auth" -> {
+                                val username = gchild.renderAttribute("user")
+                                    ?: throw ConfigurationException("username attribute is required")
+                                val password = gchild.renderAttribute("password")
+                                    ?: throw ConfigurationException("password attribute is required")
+                                authentication =
+                                    RemoteBuildCacheClient.Configuration.Authentication.BasicAuthenticationCredentials(
+                                        username,
+                                        password
+                                    )
+                            }
+
+                            "retry-policy" -> {
+                                val maxAttempts =
+                                    gchild.renderAttribute("max-attempts")
+                                        ?.let(String::toInt)
+                                        ?: throw ConfigurationException("max-attempts attribute is required")
+                                val initialDelay =
+                                    gchild.renderAttribute("initial-delay")
+                                        ?.let(Duration::parse)
+                                        ?: Duration.ofSeconds(1)
+                                val exp =
+                                    gchild.renderAttribute("exp")
+                                        ?.let(String::toDouble)
+                                        ?: 2.0f
+                                retryPolicy = RemoteBuildCacheClient.Configuration.RetryPolicy(
+                                    maxAttempts,
+                                    initialDelay.toMillis(),
+                                    exp.toDouble()
+                                )
+                            }
+
+                            "connection" -> {
+                                val writeTimeout = gchild.renderAttribute("write-timeout")
+                                    ?.let(Duration::parse) ?: Duration.of(0, ChronoUnit.SECONDS)
+                                val readTimeout = gchild.renderAttribute("read-timeout")
+                                    ?.let(Duration::parse) ?: Duration.of(0, ChronoUnit.SECONDS)
+                                val idleTimeout = gchild.renderAttribute("idle-timeout")
+                                    ?.let(Duration::parse) ?: Duration.of(30, ChronoUnit.SECONDS)
+                                val readIdleTimeout = gchild.renderAttribute("read-idle-timeout")
+                                    ?.let(Duration::parse) ?: Duration.of(60, ChronoUnit.SECONDS)
+                                val writeIdleTimeout = gchild.renderAttribute("write-idle-timeout")
+                                    ?.let(Duration::parse) ?: Duration.of(60, ChronoUnit.SECONDS)
+                                connection = RemoteBuildCacheClient.Configuration.Connection(
+                                    readTimeout,
+                                    writeTimeout,
+                                    idleTimeout,
+                                    readIdleTimeout,
+                                    writeIdleTimeout,
+                                )
+                            }
+                        }
+                    }
+                    val maxConnections = child.renderAttribute("max-connections")
+                        ?.let(String::toInt)
+                        ?: 50
+                    val connectionTimeout = child.renderAttribute("connection-timeout")
+                        ?.let(Duration::parse)
+                    val compressionEnabled = child.renderAttribute("enable-compression")
+                        ?.let(String::toBoolean)
+                        ?: true
+
+                    profiles[name] = RemoteBuildCacheClient.Configuration.Profile(
+                        uri,
+                        connection,
+                        authentication,
+                        connectionTimeout,
+                        maxConnections,
+                        compressionEnabled,
+                        retryPolicy
+                    )
+                }
+            }
+        }
+        return RemoteBuildCacheClient.Configuration(profiles)
+    }
+}

rbcs-client/src/main/kotlin/net/woggioni/rbcs/client/retry.kt

@@ -0,0 +1,79 @@
+package net.woggioni.rbcs.client
+
+import io.netty.util.concurrent.EventExecutorGroup
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.TimeUnit
+import kotlin.math.pow
+import kotlin.random.Random
+
+sealed class OperationOutcome<T> {
+    class Success<T>(val result: T) : OperationOutcome<T>()
+    class Failure<T>(val ex: Throwable) : OperationOutcome<T>()
+}
+
+sealed class OutcomeHandlerResult {
+    class Retry(val suggestedDelayMillis: Long? = null) : OutcomeHandlerResult()
+    class DoNotRetry : OutcomeHandlerResult()
+}
+
+fun interface OutcomeHandler<T> {
+    fun shouldRetry(result: OperationOutcome<T>): OutcomeHandlerResult
+}
+
+fun <T> executeWithRetry(
+    eventExecutorGroup: EventExecutorGroup,
+    maxAttempts: Int,
+    initialDelay: Double,
+    exp: Double,
+    outcomeHandler: OutcomeHandler<T>,
+    randomizer : Random?,
+    cb: () -> CompletableFuture<T>
+): CompletableFuture<T> {
+
+    val finalResult = cb()
+    var future = finalResult
+    var shortCircuit = false
+    for (i in 1 until maxAttempts) {
+        future = future.handle { result, ex ->
+            val operationOutcome = if (ex == null) {
+                OperationOutcome.Success(result)
+            } else {
+                OperationOutcome.Failure(ex.cause ?: ex)
+            }
+            if (shortCircuit) {
+                when(operationOutcome) {
+                    is OperationOutcome.Failure -> throw operationOutcome.ex
+                    is OperationOutcome.Success -> CompletableFuture.completedFuture(operationOutcome.result)
+                }
+            } else {
+                when(val outcomeHandlerResult = outcomeHandler.shouldRetry(operationOutcome)) {
+                    is OutcomeHandlerResult.Retry -> {
+                        val res = CompletableFuture<T>()
+                        val delay = run {
+                            val scheduledDelay = (initialDelay * exp.pow(i.toDouble()) * (1.0 + (randomizer?.nextDouble(-0.5, 0.5) ?: 0.0))).toLong()
+                            outcomeHandlerResult.suggestedDelayMillis?.coerceAtMost(scheduledDelay) ?: scheduledDelay
+                        }
+                        eventExecutorGroup.schedule({
+                            cb().handle { result, ex ->
+                                if (ex == null) {
+                                    res.complete(result)
+                                } else {
+                                    res.completeExceptionally(ex)
+                                }
+                            }
+                        }, delay, TimeUnit.MILLISECONDS)
+                        res
+                    }
+                    is OutcomeHandlerResult.DoNotRetry -> {
+                        shortCircuit = true
+                        when(operationOutcome) {
+                            is OperationOutcome.Failure -> throw operationOutcome.ex
+                            is OperationOutcome.Success -> CompletableFuture.completedFuture(operationOutcome.result)
+                        }
+                    }
+                }
+            }
+        }.thenCompose { it }
+    }
+    return future
+}

rbcs-client/src/main/resources/net/woggioni/rbcs/client/schema/rbcs-client.xsd

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<xs:schema targetNamespace="urn:net.woggioni.rbcs.client"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns:rbcs-client="urn:net.woggioni.rbcs.client"
+           elementFormDefault="unqualified"
+>
+    <xs:element name="profiles" type="rbcs-client:profilesType"/>
+
+    <xs:complexType name="profilesType">
+        <xs:sequence minOccurs="0">
+            <xs:element name="profile" type="rbcs-client:profileType" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="profileType">
+        <xs:sequence>
+            <xs:choice>
+                <xs:element name="no-auth" type="rbcs-client:noAuthType"/>
+                <xs:element name="basic-auth" type="rbcs-client:basicAuthType"/>
+                <xs:element name="tls-client-auth" type="rbcs-client:tlsClientAuthType"/>
+            </xs:choice>
+            <xs:element name="connection" type="rbcs-client:connectionType" minOccurs="0" />
+            <xs:element name="retry-policy" type="rbcs-client:retryType" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attribute name="name" type="xs:token" use="required"/>
+        <xs:attribute name="base-url" type="xs:anyURI" use="required"/>
+        <xs:attribute name="max-connections" type="xs:positiveInteger" default="50"/>
+        <xs:attribute name="connection-timeout" type="xs:duration"/>
+        <xs:attribute name="enable-compression" type="xs:boolean" default="true"/>
+    </xs:complexType>
+
+    <xs:complexType name="connectionType">
+        <xs:attribute name="read-timeout" type="xs:duration" use="optional" default="PT0S"/>
+        <xs:attribute name="write-timeout" type="xs:duration" use="optional" default="PT0S"/>
+        <xs:attribute name="idle-timeout" type="xs:duration" use="optional" default="PT30S"/>
+        <xs:attribute name="read-idle-timeout" type="xs:duration" use="optional" default="PT60S"/>
+        <xs:attribute name="write-idle-timeout" type="xs:duration" use="optional" default="PT60S"/>
+    </xs:complexType>
+
+    <xs:complexType name="noAuthType"/>
+
+    <xs:complexType name="basicAuthType">
+        <xs:attribute name="user" type="xs:token" use="required"/>
+        <xs:attribute name="password" type="xs:string" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="tlsClientAuthType">
+        <xs:attribute name="key-store-file" type="xs:anyURI" use="required"/>
+        <xs:attribute name="key-store-password" type="xs:string" use="required"/>
+        <xs:attribute name="key-alias" type="xs:token" use="required"/>
+        <xs:attribute name="key-password" type="xs:string" use="optional"/>
+    </xs:complexType>
+
+    <xs:complexType name="retryType">
+        <xs:attribute name="max-attempts" type="xs:positiveInteger" use="required"/>
+        <xs:attribute name="initial-delay" type="xs:duration" default="PT1S"/>
+        <xs:attribute name="exp" type="xs:double" default="2.0"/>
+    </xs:complexType>
+
+</xs:schema>

rbcs-client/src/test/kotlin/net/woggioni/rbcs/client/RetryTest.kt

@@ -0,0 +1,148 @@
+package net.woggioni.rbcs.client
+
+import io.netty.util.concurrent.DefaultEventExecutorGroup
+import io.netty.util.concurrent.EventExecutorGroup
+import net.woggioni.rbcs.common.contextLogger
+import org.junit.jupiter.api.Assertions
+import org.junit.jupiter.api.extension.ExtensionContext
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.Arguments
+import org.junit.jupiter.params.provider.ArgumentsProvider
+import org.junit.jupiter.params.provider.ArgumentsSource
+import java.util.concurrent.CompletableFuture
+import java.util.stream.Stream
+import kotlin.random.Random
+
+class RetryTest {
+
+    data class TestArgs(
+        val seed: Int,
+        val maxAttempt: Int,
+        val initialDelay: Double,
+        val exp: Double,
+    )
+
+    class TestArguments : ArgumentsProvider {
+        override fun provideArguments(context: ExtensionContext): Stream<out Arguments> {
+            return Stream.of(
+                TestArgs(
+                    seed = 101325,
+                    maxAttempt = 5,
+                    initialDelay = 50.0,
+                    exp = 2.0,
+                ),
+                TestArgs(
+                    seed = 101325,
+                    maxAttempt = 20,
+                    initialDelay = 100.0,
+                    exp = 1.1,
+                ),
+                TestArgs(
+                    seed = 123487,
+                    maxAttempt = 20,
+                    initialDelay = 100.0,
+                    exp = 2.0,
+                ),
+                TestArgs(
+                    seed = 20082024,
+                    maxAttempt = 10,
+                    initialDelay = 100.0,
+                    exp = 2.0,
+                )
+            ).map {
+                object: Arguments {
+                    override fun get() = arrayOf(it)
+                }
+            }
+        }
+    }
+
+    @ArgumentsSource(TestArguments::class)
+    @ParameterizedTest
+    fun test(testArgs: TestArgs) {
+        val log = contextLogger()
+        log.debug("Start")
+        val executor: EventExecutorGroup = DefaultEventExecutorGroup(1)
+        val attempts = mutableListOf<Pair<Long, OperationOutcome<Int>>>()
+        val outcomeHandler = OutcomeHandler<Int> { outcome ->
+            when(outcome) {
+                is OperationOutcome.Success -> {
+                    if(outcome.result % 10 == 0) {
+                        OutcomeHandlerResult.DoNotRetry()
+                    } else {
+                        OutcomeHandlerResult.Retry(null)
+                    }
+                }
+                is OperationOutcome.Failure -> {
+                    when(outcome.ex) {
+                        is IllegalStateException -> {
+                            log.debug(outcome.ex.message, outcome.ex)
+                            OutcomeHandlerResult.Retry(null)
+                        }
+                        else -> {
+                            OutcomeHandlerResult.DoNotRetry()
+                        }
+                    }
+                }
+            }
+        }
+        val random = Random(testArgs.seed)
+
+        val future =
+            executeWithRetry(executor, testArgs.maxAttempt, testArgs.initialDelay, testArgs.exp, outcomeHandler, null) {
+                val now = System.nanoTime()
+                val result = CompletableFuture<Int>()
+                executor.submit {
+                    val n = random.nextInt(0, Integer.MAX_VALUE)
+                    log.debug("Got new number: {}", n)
+                    if(n % 3 == 0) {
+                        val ex = IllegalStateException("Value $n can be divided by 3")
+                        result.completeExceptionally(ex)
+                        attempts += now to OperationOutcome.Failure(ex)
+                    } else if(n % 7 == 0) {
+                        val ex = RuntimeException("Value $n can be divided by 7")
+                        result.completeExceptionally(ex)
+                        attempts += now to OperationOutcome.Failure(ex)
+                    } else {
+                        result.complete(n)
+                        attempts += now to OperationOutcome.Success(n)
+                    }
+                }
+                result
+            }
+        Assertions.assertTrue(attempts.size <= testArgs.maxAttempt)
+        val result = future.handle { res, ex ->
+            if(ex != null) {
+                val err = ex.cause ?: ex
+                log.debug(err.message, err)
+                OperationOutcome.Failure(err)
+            } else {
+                OperationOutcome.Success(res)
+            }
+        }.get()
+        for ((index, attempt) in attempts.withIndex()) {
+            val (timestamp, value) = attempt
+            if (index > 0) {
+                /* Check the delay for subsequent attempts is correct */
+                val previousAttempt = attempts[index - 1]
+                val expectedTimestamp =
+                    previousAttempt.first + testArgs.initialDelay * Math.pow(testArgs.exp, index.toDouble()) * 1e6
+                val actualTimestamp = timestamp
+                val err = Math.abs(expectedTimestamp - actualTimestamp) / expectedTimestamp
+                Assertions.assertTrue(err < 1e-2)
+            }
+            if (index == attempts.size - 1 && index < testArgs.maxAttempt - 1) {
+                /*
+                 * If the last attempt index is lower than the maximum number of attempts, then
+                 * check the outcome handler returns DoNotRetry
+                 */
+                Assertions.assertTrue(outcomeHandler.shouldRetry(value) is OutcomeHandlerResult.DoNotRetry)
+            } else if (index < attempts.size - 1) {
+                /*
+                 * If the attempt is not the last attempt check the outcome handler returns Retry
+                 */
+                Assertions.assertTrue(outcomeHandler.shouldRetry(value) is OutcomeHandlerResult.Retry)
+            }
+        }
+    }
+}

rbcs-client/src/test/resources/logback.xml

@@ -15,6 +15,7 @@
     <root level="info">
         <appender-ref ref="console"/>
     </root>
+    <logger name="io.netty" level="info"/>
     <logger name="com.google.code.yanf4j" level="warn"/>
     <logger name="net.rubyeye.xmemcached" level="warn"/>
 </configuration>

rbcs-client/src/test/resources/net/woggioni/rbcs/client/test/rbcs-client.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<rbcs-client:profiles xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
+                      xmlns:rbcs-client="urn:net.woggioni.rbcs.client"
+                      xs:schemaLocation="urn:net.woggioni.rbcs.client jms://net.woggioni.rbcs.client/net/woggioni/rbcs/client/schema/rbcs-client.xsd"
+                      >
+    <profile name="profile1" base-url="https://rbcs1.example.com/">
+        <tls-client-auth
+                key-store-file="keystore.pfx"
+                key-store-password="password"
+                key-alias="woggioni@c962475fa38"
+                key-password="key-password"/>
+    </profile>
+    <profile name="profile2" base-url="https://rbcs2.example.com/">
+        <basic-auth user="user" password="password"/>
+    </profile>
+</rbcs-client:profiles>

rbcs-common/build.gradle

@@ -6,9 +6,10 @@ plugins {
 }
 
 dependencies {
-    implementation project(':gbcs-api')
+    implementation project(':rbcs-api')
     implementation catalog.slf4j.api
     implementation catalog.jwo
+    implementation catalog.netty.buffer
 }
 
 publishing {

rbcs-common/src/main/java/module-info.java

@@ -1,10 +1,12 @@
-module net.woggioni.gbcs.common {
+module net.woggioni.rbcs.common {
     requires java.xml;
     requires java.logging;
     requires org.slf4j;
     requires kotlin.stdlib;
     requires net.woggioni.jwo;
+    requires io.netty.buffer;
+    requires io.netty.transport;
 
-    provides java.net.spi.URLStreamHandlerProvider with net.woggioni.gbcs.common.GbcsUrlStreamHandlerFactory;
+    provides java.net.spi.URLStreamHandlerProvider with net.woggioni.rbcs.common.RbcsUrlStreamHandlerFactory;
-    exports net.woggioni.gbcs.common;
+    exports net.woggioni.rbcs.common;
 }

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/BB.kt

@@ -0,0 +1,15 @@
+package net.woggioni.rbcs.common
+
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import io.netty.buffer.CompositeByteBuf
+
+fun extractChunk(buf: CompositeByteBuf, alloc: ByteBufAllocator): ByteBuf {
+    val chunk = alloc.compositeBuffer()
+    for (component in buf.decompose(0, buf.readableBytes())) {
+        chunk.addComponent(true, component.retain())
+    }
+    buf.removeComponents(0, buf.numComponents())
+    buf.clear()
+    return chunk
+}

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/ByteBufInputStream.kt

@@ -0,0 +1,25 @@
+package net.woggioni.rbcs.common
+
+import io.netty.buffer.ByteBuf
+import java.io.InputStream
+
+class ByteBufInputStream(private val buf : ByteBuf) : InputStream() {
+    override fun read(): Int {
+        return buf.takeIf {
+            it.readableBytes() > 0
+        }?.let(ByteBuf::readByte)
+            ?.let(Byte::toInt) ?: -1
+    }
+
+    override fun read(b: ByteArray, off: Int, len: Int): Int {
+        val readableBytes = buf.readableBytes()
+        if(readableBytes == 0) return -1
+        val result = len.coerceAtMost(readableBytes)
+        buf.readBytes(b, off, result)
+        return result
+    }
+
+    override fun close() {
+        buf.release()
+    }
+}

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/ByteBufOutputStream.kt

@@ -0,0 +1,18 @@
+package net.woggioni.rbcs.common
+
+import io.netty.buffer.ByteBuf
+import java.io.OutputStream
+
+class ByteBufOutputStream(private val buf : ByteBuf) : OutputStream() {
+    override fun write(b: Int) {
+        buf.writeByte(b)
+    }
+
+    override fun write(b: ByteArray, off: Int, len: Int) {
+        buf.writeBytes(b, off, len)
+    }
+
+    override fun close() {
+        buf.release()
+    }
+}

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/Exception.kt

@@ -0,0 +1,7 @@
+package net.woggioni.rbcs.common
+
+class ResourceNotFoundException(msg : String? = null, cause: Throwable? = null) : RuntimeException(msg, cause) {
+}
+
+class ModuleNotFoundException(msg : String? = null, cause: Throwable? = null) : RuntimeException(msg, cause) {
+}

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/HostAndPort.kt

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.common
+package net.woggioni.rbcs.common
 
 
 data class HostAndPort(val host: String, val port: Int = 0) {

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/Logging.kt

@@ -0,0 +1,194 @@
+package net.woggioni.rbcs.common
+
+import io.netty.channel.Channel
+import io.netty.channel.ChannelHandlerContext
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import org.slf4j.MDC
+import org.slf4j.event.Level
+import org.slf4j.spi.LoggingEventBuilder
+import java.nio.file.Files
+import java.nio.file.Path
+import java.util.logging.LogManager
+
+inline fun <reified T> T.contextLogger() = LoggerFactory.getLogger(T::class.java)
+inline fun <reified T> createLogger() = LoggerFactory.getLogger(T::class.java)
+
+inline fun Logger.traceParam(messageBuilder: () -> Pair<String, Array<Any>>) {
+    if (isTraceEnabled) {
+        val (format, params) = messageBuilder()
+        trace(format, params)
+    }
+}
+
+inline fun Logger.debugParam(messageBuilder: () -> Pair<String, Array<Any>>) {
+    if (isDebugEnabled) {
+        val (format, params) = messageBuilder()
+        info(format, params)
+    }
+}
+
+inline fun Logger.infoParam(messageBuilder: () -> Pair<String, Array<Any>>) {
+    if (isInfoEnabled) {
+        val (format, params) = messageBuilder()
+        info(format, params)
+    }
+}
+
+inline fun Logger.warnParam(messageBuilder: () -> Pair<String, Array<Any>>) {
+    if (isWarnEnabled) {
+        val (format, params) = messageBuilder()
+        warn(format, params)
+    }
+}
+
+inline fun Logger.errorParam(messageBuilder: () -> Pair<String, Array<Any>>) {
+    if (isErrorEnabled) {
+        val (format, params) = messageBuilder()
+        error(format, params)
+    }
+}
+
+
+inline fun log(
+    log: Logger,
+    filter: Logger.() -> Boolean,
+    loggerMethod: Logger.(String) -> Unit, messageBuilder: () -> String
+) {
+    if (log.filter()) {
+        log.loggerMethod(messageBuilder())
+    }
+}
+
+fun withMDC(params: Array<Pair<String, String>>, cb: () -> Unit) {
+    object : AutoCloseable {
+        override fun close() {
+            for ((key, _) in params) MDC.remove(key)
+        }
+    }.use {
+        for ((key, value) in params) MDC.put(key, value)
+        cb()
+    }
+}
+
+inline fun Logger.log(level: Level, channel: Channel, crossinline messageBuilder: (LoggingEventBuilder) -> Unit ) {
+    if (isEnabledForLevel(level)) {
+        val params = arrayOf<Pair<String, String>>(
+            "channel-id-short" to channel.id().asShortText(),
+            "channel-id-long" to channel.id().asLongText(),
+            "remote-address" to channel.remoteAddress().toString(),
+            "local-address" to channel.localAddress().toString(),
+        )
+        withMDC(params) {
+            val builder = makeLoggingEventBuilder(level)
+//            for ((key, value) in params) {
+//                builder.addKeyValue(key, value)
+//            }
+            messageBuilder(builder)
+            builder.log()
+        }
+    }
+}
+inline fun Logger.log(level: Level, channel: Channel, crossinline messageBuilder: () -> String) {
+    log(level, channel) { builder ->
+        builder.setMessage(messageBuilder())
+    }
+}
+
+inline fun Logger.trace(ch: Channel, crossinline messageBuilder: () -> String) {
+    log(Level.TRACE, ch, messageBuilder)
+}
+
+inline fun Logger.debug(ch: Channel, crossinline messageBuilder: () -> String) {
+    log(Level.DEBUG, ch, messageBuilder)
+}
+
+inline fun Logger.info(ch: Channel, crossinline messageBuilder: () -> String) {
+    log(Level.INFO, ch, messageBuilder)
+}
+
+inline fun Logger.warn(ch: Channel, crossinline messageBuilder: () -> String) {
+    log(Level.WARN, ch, messageBuilder)
+}
+
+inline fun Logger.error(ch: Channel, crossinline messageBuilder: () -> String) {
+    log(Level.ERROR, ch, messageBuilder)
+}
+
+inline fun Logger.trace(ctx: ChannelHandlerContext, crossinline messageBuilder: () -> String) {
+    log(Level.TRACE, ctx.channel(), messageBuilder)
+}
+
+inline fun Logger.debug(ctx: ChannelHandlerContext, crossinline messageBuilder: () -> String) {
+    log(Level.DEBUG, ctx.channel(), messageBuilder)
+}
+
+inline fun Logger.info(ctx: ChannelHandlerContext, crossinline messageBuilder: () -> String) {
+    log(Level.INFO, ctx.channel(), messageBuilder)
+}
+
+inline fun Logger.warn(ctx: ChannelHandlerContext, crossinline messageBuilder: () -> String) {
+    log(Level.WARN, ctx.channel(), messageBuilder)
+}
+
+inline fun Logger.error(ctx: ChannelHandlerContext, crossinline messageBuilder: () -> String) {
+    log(Level.ERROR, ctx.channel(), messageBuilder)
+}
+
+
+inline fun Logger.log(level: Level, messageBuilder: () -> String) {
+    if (isEnabledForLevel(level)) {
+        makeLoggingEventBuilder(level).log(messageBuilder())
+    }
+}
+
+inline fun Logger.trace(messageBuilder: () -> String) {
+    if (isTraceEnabled) {
+        trace(messageBuilder())
+    }
+}
+
+inline fun Logger.debug(messageBuilder: () -> String) {
+    if (isDebugEnabled) {
+        debug(messageBuilder())
+    }
+}
+
+inline fun Logger.info(messageBuilder: () -> String) {
+    if (isInfoEnabled) {
+        info(messageBuilder())
+    }
+}
+
+inline fun Logger.warn(messageBuilder: () -> String) {
+    if (isWarnEnabled) {
+        warn(messageBuilder())
+    }
+}
+
+inline fun Logger.error(messageBuilder: () -> String) {
+    if (isErrorEnabled) {
+        error(messageBuilder())
+    }
+}
+
+
+class LoggingConfig {
+
+    init {
+        val logManager = LogManager.getLogManager()
+        System.getProperty("log.config.source")?.let withSource@{ source ->
+            val urls = LoggingConfig::class.java.classLoader.getResources(source)
+            while (urls.hasMoreElements()) {
+                val url = urls.nextElement()
+                url.openStream().use { inputStream ->
+                    logManager.readConfiguration(inputStream)
+                    return@withSource
+                }
+            }
+            Path.of(source).takeIf(Files::exists)
+                ?.let(Files::newInputStream)
+                ?.use(logManager::readConfiguration)
+        }
+    }
+}

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/PasswordSecurity.kt

@@ -1,4 +1,4 @@
-package net.woggioni.gbcs.common
+package net.woggioni.rbcs.common
 
 import java.security.SecureRandom
 import java.security.spec.KeySpec

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/RBCS.kt

@@ -0,0 +1,61 @@
+package net.woggioni.rbcs.common
+
+import net.woggioni.jwo.JWO
+import java.net.URI
+import java.net.URL
+import java.security.MessageDigest
+
+object RBCS {
+    fun String.toUrl() : URL = URL.of(URI(this), null)
+
+    const val RBCS_NAMESPACE_URI: String = "urn:net.woggioni.rbcs.server"
+    const val RBCS_PREFIX: String = "rbcs"
+    const val XML_SCHEMA_NAMESPACE_URI = "http://www.w3.org/2001/XMLSchema-instance"
+
+    fun ByteArray.toInt(index : Int = 0) : Long {
+        if(index + 4 > size) throw IllegalArgumentException("Not enough bytes to decode a 32 bits integer")
+        var value : Long = 0
+        for (b in index until index + 4) {
+            value = (value shl 8) + (get(b).toInt() and 0xFF)
+        }
+        return value
+    }
+
+    fun ByteArray.toLong(index : Int = 0) : Long {
+        if(index + 8 > size) throw IllegalArgumentException("Not enough bytes to decode a 64 bits long integer")
+        var value : Long = 0
+        for (b in index until index + 8) {
+            value = (value shl 8) + (get(b).toInt() and 0xFF)
+        }
+        return value
+    }
+
+    fun digest(
+        data: ByteArray,
+        md: MessageDigest = MessageDigest.getInstance("MD5")
+    ): ByteArray {
+        md.update(data)
+        return md.digest()
+    }
+
+    fun digestString(
+        data: ByteArray,
+        md: MessageDigest = MessageDigest.getInstance("MD5")
+    ): String {
+        return JWO.bytesToHex(digest(data, md))
+    }
+
+    fun processCacheKey(key: String, digestAlgorithm: String?) = digestAlgorithm
+        ?.let(MessageDigest::getInstance)
+        ?.let { md ->
+            digest(key.toByteArray(), md)
+        } ?: key.toByteArray(Charsets.UTF_8)
+
+    fun Long.toIntOrNull(): Int? {
+        return if (this >= Int.MIN_VALUE && this <= Int.MAX_VALUE) {
+            toInt()
+        } else {
+            null
+        }
+    }
+}

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/RbcsUrlStreamHandlerFactory.kt

@@ -1,20 +1,18 @@
-package net.woggioni.gbcs.common
+package net.woggioni.rbcs.common
 
 import java.io.IOException
 import java.io.InputStream
 import java.net.URL
 import java.net.URLConnection
 import java.net.URLStreamHandler
-import java.net.URLStreamHandlerFactory
 import java.net.spi.URLStreamHandlerProvider
-import java.util.Optional
 import java.util.concurrent.atomic.AtomicBoolean
 import java.util.stream.Collectors
 
 
-class GbcsUrlStreamHandlerFactory : URLStreamHandlerProvider() {
+class RbcsUrlStreamHandlerFactory : URLStreamHandlerProvider() {
 
-    private class ClasspathHandler(private val classLoader: ClassLoader = GbcsUrlStreamHandlerFactory::class.java.classLoader) :
+    private class ClasspathHandler(private val classLoader: ClassLoader = RbcsUrlStreamHandlerFactory::class.java.classLoader) :
         URLStreamHandler() {
 
         override fun openConnection(u: URL): URLConnection? {
@@ -37,13 +35,17 @@ class GbcsUrlStreamHandlerFactory : URLStreamHandlerProvider() {
     private class JpmsHandler : URLStreamHandler() {
 
         override fun openConnection(u: URL): URLConnection {
+            val moduleName = u.host
             val thisModule = javaClass.module
-            val sourceModule = Optional.ofNullable(thisModule)
+            val sourceModule =
-                .map { obj: Module -> obj.layer }
+                thisModule
-                .flatMap { layer: ModuleLayer ->
+                ?.let(Module::getLayer)
-                    val moduleName = u.host
+                ?.let { layer: ModuleLayer ->
-                    layer.findModule(moduleName)
+                    layer.findModule(moduleName).orElse(null)
-                }.orElse(thisModule)
+                } ?: if(thisModule.layer == null) {
+                    thisModule
+                } else throw ModuleNotFoundException("Module '$moduleName' not found")
+
             return JpmsResourceURLConnection(u, sourceModule)
         }
     }
@@ -54,7 +56,9 @@ class GbcsUrlStreamHandlerFactory : URLStreamHandlerProvider() {
 
         @Throws(IOException::class)
         override fun getInputStream(): InputStream {
-            return module.getResourceAsStream(getURL().path)
+            val resource = getURL().path
+            return module.getResourceAsStream(resource)
+                ?: throw ResourceNotFoundException("Resource '$resource' not found in module '${module.name}'")
         }
     }
 
@@ -83,12 +87,12 @@ class GbcsUrlStreamHandlerFactory : URLStreamHandlerProvider() {
         private val installed = AtomicBoolean(false)
         fun install() {
             if (!installed.getAndSet(true)) {
-                URL.setURLStreamHandlerFactory(GbcsUrlStreamHandlerFactory())
+                URL.setURLStreamHandlerFactory(RbcsUrlStreamHandlerFactory())
             }
         }
 
         private val packageMap: Map<String, List<Module>> by lazy {
-            GbcsUrlStreamHandlerFactory::class.java.module.layer
+            RbcsUrlStreamHandlerFactory::class.java.module.layer
                 .modules()
                 .stream()
                 .flatMap { m: Module ->

rbcs-common/src/main/kotlin/net/woggioni/rbcs/common/Xml.kt

@@ -1,7 +1,6 @@
-package net.woggioni.gbcs.common
+package net.woggioni.rbcs.common
 
 import net.woggioni.jwo.JWO
-import org.slf4j.LoggerFactory
 import org.slf4j.event.Level
 import org.w3c.dom.Document
 import org.w3c.dom.Element
@@ -79,7 +78,7 @@ class Xml(val doc: Document, val element: Element) {
     class ErrorHandler(private val fileURL: URL) : ErrHandler {
 
         companion object {
-            private val log = LoggerFactory.getLogger(ErrorHandler::class.java)
+            private val log = createLogger<ErrorHandler>()
         }
 
          override fun warning(ex: SAXParseException)= err(ex, Level.WARN)

rbcs-common/src/main/resources/META-INF/services/java.net.spi.URLStreamHandlerProvider

@@ -0,0 +1 @@
+net.woggioni.rbcs.common.RbcsUrlStreamHandlerFactory

rbcs-server-memcache/build.gradle

@@ -6,10 +6,10 @@ plugins {
 
 configurations {
     bundle {
-        extendsFrom runtimeClasspath
         canBeResolved = true
         canBeConsumed = false
         visible = false
+        transitive = false
 
         resolutionStrategy {
             dependencies {
@@ -29,10 +29,21 @@ configurations {
 }
 
 dependencies {
-    compileOnly project(':gbcs-common')
+    implementation project(':rbcs-common')
-    compileOnly project(':gbcs-api')
+    implementation project(':rbcs-api')
-    compileOnly catalog.jwo
+    implementation catalog.jwo
-    implementation catalog.xmemcached
+    implementation catalog.slf4j.api
+    implementation catalog.netty.common
+    implementation catalog.netty.handler
+    implementation catalog.netty.codec.memcache
+
+    bundle catalog.netty.codec.memcache
+
+    testRuntimeOnly catalog.logback.classic
+}
+
+tasks.named(JavaPlugin.TEST_TASK_NAME, Test) {
+    systemProperty("io.netty.leakDetectionLevel", "PARANOID")
 }
 
 Provider<Tar> bundleTask = tasks.register("bundle", Tar) {

rbcs-server-memcache/src/main/java/module-info.java

@@ -0,0 +1,20 @@
+import net.woggioni.rbcs.api.CacheProvider;
+
+module net.woggioni.rbcs.server.memcache {
+    requires net.woggioni.rbcs.common;
+    requires net.woggioni.rbcs.api;
+    requires net.woggioni.jwo;
+    requires java.xml;
+    requires kotlin.stdlib;
+    requires io.netty.transport;
+    requires io.netty.codec;
+    requires io.netty.codec.memcache;
+    requires io.netty.common;
+    requires io.netty.buffer;
+    requires io.netty.handler;
+    requires org.slf4j;
+
+    provides CacheProvider with net.woggioni.rbcs.server.memcache.MemcacheCacheProvider;
+
+    opens net.woggioni.rbcs.server.memcache.schema;
+}

rbcs-server-memcache/src/main/kotlin/net/woggioni/rbcs/server/memcache/Exception.kt

@@ -0,0 +1,4 @@
+package net.woggioni.rbcs.server.memcache
+
+class MemcacheException(status : Short, msg : String? = null, cause : Throwable? = null)
+    : RuntimeException(msg ?: "Memcached status $status", cause)

rbcs-server-memcache/src/main/kotlin/net/woggioni/rbcs/server/memcache/MemcacheCacheConfiguration.kt

@@ -0,0 +1,45 @@
+package net.woggioni.rbcs.server.memcache
+
+import net.woggioni.rbcs.api.CacheHandlerFactory
+import net.woggioni.rbcs.api.Configuration
+import net.woggioni.rbcs.common.HostAndPort
+import net.woggioni.rbcs.server.memcache.client.MemcacheClient
+import java.time.Duration
+
+data class MemcacheCacheConfiguration(
+    val servers: List<Server>,
+    val maxAge: Duration = Duration.ofDays(1),
+    val digestAlgorithm: String? = null,
+    val compressionMode: CompressionMode? = null,
+    val compressionLevel: Int,
+    val chunkSize : Int
+) : Configuration.Cache {
+
+    enum class CompressionMode {
+        /**
+         * Deflate mode
+         */
+        DEFLATE
+    }
+
+    data class Server(
+        val endpoint : HostAndPort,
+        val connectionTimeoutMillis : Int?,
+        val maxConnections : Int
+    )
+
+
+    override fun materialize() = object : CacheHandlerFactory {
+        private val client = MemcacheClient(this@MemcacheCacheConfiguration.servers, chunkSize)
+        override fun close() {
+            client.close()
+        }
+
+        override fun newHandler() = MemcacheCacheHandler(client, digestAlgorithm, compressionMode != null, compressionLevel, chunkSize, maxAge)
+    }
+
+    override fun getNamespaceURI() = "urn:net.woggioni.rbcs.server.memcache"
+
+    override fun getTypeName() = "memcacheCacheType"
+}
+

rbcs-server-memcache/src/main/kotlin/net/woggioni/rbcs/server/memcache/MemcacheCacheHandler.kt

@@ -0,0 +1,409 @@
+package net.woggioni.rbcs.server.memcache
+
+import io.netty.buffer.ByteBuf
+import io.netty.buffer.ByteBufAllocator
+import io.netty.buffer.CompositeByteBuf
+import io.netty.channel.ChannelHandlerContext
+import io.netty.channel.SimpleChannelInboundHandler
+import io.netty.handler.codec.memcache.DefaultLastMemcacheContent
+import io.netty.handler.codec.memcache.DefaultMemcacheContent
+import io.netty.handler.codec.memcache.LastMemcacheContent
+import io.netty.handler.codec.memcache.MemcacheContent
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheOpcodes
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheResponse
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheResponseStatus
+import io.netty.handler.codec.memcache.binary.DefaultBinaryMemcacheRequest
+import net.woggioni.rbcs.api.CacheValueMetadata
+import net.woggioni.rbcs.api.exception.ContentTooLargeException
+import net.woggioni.rbcs.api.message.CacheMessage
+import net.woggioni.rbcs.api.message.CacheMessage.CacheContent
+import net.woggioni.rbcs.api.message.CacheMessage.CacheGetRequest
+import net.woggioni.rbcs.api.message.CacheMessage.CachePutRequest
+import net.woggioni.rbcs.api.message.CacheMessage.CachePutResponse
+import net.woggioni.rbcs.api.message.CacheMessage.CacheValueFoundResponse
+import net.woggioni.rbcs.api.message.CacheMessage.CacheValueNotFoundResponse
+import net.woggioni.rbcs.api.message.CacheMessage.LastCacheContent
+import net.woggioni.rbcs.common.ByteBufInputStream
+import net.woggioni.rbcs.common.ByteBufOutputStream
+import net.woggioni.rbcs.common.RBCS.processCacheKey
+import net.woggioni.rbcs.common.RBCS.toIntOrNull
+import net.woggioni.rbcs.common.createLogger
+import net.woggioni.rbcs.common.debug
+import net.woggioni.rbcs.common.extractChunk
+import net.woggioni.rbcs.common.trace
+import net.woggioni.rbcs.server.memcache.client.MemcacheClient
+import net.woggioni.rbcs.server.memcache.client.MemcacheRequestController
+import net.woggioni.rbcs.server.memcache.client.MemcacheResponseHandler
+import java.io.ByteArrayOutputStream
+import java.io.ObjectInputStream
+import java.io.ObjectOutputStream
+import java.nio.ByteBuffer
+import java.nio.channels.Channels
+import java.nio.channels.FileChannel
+import java.nio.channels.ReadableByteChannel
+import java.nio.file.Files
+import java.nio.file.StandardOpenOption
+import java.time.Duration
+import java.time.Instant
+import java.util.concurrent.CompletableFuture
+import java.util.zip.Deflater
+import java.util.zip.DeflaterOutputStream
+import java.util.zip.InflaterOutputStream
+import io.netty.channel.Channel as NettyChannel
+
+class MemcacheCacheHandler(
+    private val client: MemcacheClient,
+    private val digestAlgorithm: String?,
+    private val compressionEnabled: Boolean,
+    private val compressionLevel: Int,
+    private val chunkSize: Int,
+    private val maxAge: Duration
+) : SimpleChannelInboundHandler<CacheMessage>() {
+    companion object {
+        private val log = createLogger<MemcacheCacheHandler>()
+
+        private fun encodeExpiry(expiry: Duration): Int {
+            val expirySeconds = expiry.toSeconds()
+            return expirySeconds.toInt().takeIf { it.toLong() == expirySeconds }
+                ?: Instant.ofEpochSecond(expirySeconds).epochSecond.toInt()
+        }
+    }
+
+    private inner class InProgressGetRequest(
+        private val key: String,
+        private val ctx: ChannelHandlerContext
+    ) {
+        private val acc = ctx.alloc().compositeBuffer()
+        private val chunk = ctx.alloc().compositeBuffer()
+        private val outputStream = ByteBufOutputStream(chunk).let {
+            if (compressionEnabled) {
+                InflaterOutputStream(it)
+            } else {
+                it
+            }
+        }
+        private var responseSent = false
+        private var metadataSize: Int? = null
+
+        fun write(buf: ByteBuf) {
+            acc.addComponent(true, buf.retain())
+            if (metadataSize == null && acc.readableBytes() >= Int.SIZE_BYTES) {
+                metadataSize = acc.readInt()
+            }
+            metadataSize
+                ?.takeIf { !responseSent }
+                ?.takeIf { acc.readableBytes() >= it }
+                ?.let { mSize ->
+                    val metadata = ObjectInputStream(ByteBufInputStream(acc)).use {
+                        acc.retain()
+                        it.readObject() as CacheValueMetadata
+                    }
+                    ctx.writeAndFlush(CacheValueFoundResponse(key, metadata))
+                    responseSent = true
+                    acc.readerIndex(Int.SIZE_BYTES + mSize)
+                }
+            if (responseSent) {
+                acc.readBytes(outputStream, acc.readableBytes())
+                if(acc.readableBytes() >= chunkSize) {
+                    flush(false)
+                }
+            }
+        }
+
+        private fun flush(last : Boolean) {
+            val toSend = extractChunk(chunk, ctx.alloc())
+            val msg = if(last) {
+                log.trace(ctx) {
+                    "Sending last chunk to client on channel ${ctx.channel().id().asShortText()}"
+                }
+                LastCacheContent(toSend)
+            } else {
+                log.trace(ctx) {
+                    "Sending chunk to client on channel ${ctx.channel().id().asShortText()}"
+                }
+                CacheContent(toSend)
+            }
+            ctx.writeAndFlush(msg)
+        }
+
+        fun commit() {
+            acc.release()
+            chunk.retain()
+            outputStream.close()
+            flush(true)
+            chunk.release()
+        }
+
+        fun rollback() {
+            acc.release()
+            outputStream.close()
+        }
+    }
+
+    private inner class InProgressPutRequest(
+        private val ch : NettyChannel,
+        metadata : CacheValueMetadata,
+        val digest : ByteBuf,
+        val requestController: CompletableFuture<MemcacheRequestController>,
+        private val alloc: ByteBufAllocator
+    ) {
+        private var totalSize = 0
+        private var tmpFile : FileChannel? = null
+        private val accumulator = alloc.compositeBuffer()
+        private val stream = ByteBufOutputStream(accumulator).let {
+            if (compressionEnabled) {
+                DeflaterOutputStream(it, Deflater(compressionLevel))
+            } else {
+                it
+            }
+        }
+
+        init {
+            ByteArrayOutputStream().let { baos ->
+                ObjectOutputStream(baos).use {
+                    it.writeObject(metadata)
+                }
+                val serializedBytes = baos.toByteArray()
+                accumulator.writeInt(serializedBytes.size)
+                accumulator.writeBytes(serializedBytes)
+            }
+        }
+
+        fun write(buf: ByteBuf) {
+            totalSize += buf.readableBytes()
+            buf.readBytes(stream, buf.readableBytes())
+            tmpFile?.let {
+                flushToDisk(it, accumulator)
+            }
+            if(accumulator.readableBytes() > 0x100000) {
+                log.debug(ch) {
+                    "Entry is too big, buffering it into a file"
+                }
+                val opts = arrayOf(
+                    StandardOpenOption.DELETE_ON_CLOSE,
+                    StandardOpenOption.READ,
+                    StandardOpenOption.WRITE,
+                    StandardOpenOption.TRUNCATE_EXISTING
+                )
+                FileChannel.open(Files.createTempFile("rbcs-memcache", ".tmp"), *opts).let { fc ->
+                    tmpFile = fc
+                    flushToDisk(fc, accumulator)
+                }
+            }
+        }
+
+        private fun flushToDisk(fc : FileChannel, buf : CompositeByteBuf) {
+            val chunk = extractChunk(buf, alloc)
+            fc.write(chunk.nioBuffer())
+            chunk.release()
+        }
+
+        fun commit() : Pair<Int, ReadableByteChannel> {
+            digest.release()
+            accumulator.retain()
+            stream.close()
+            val fileChannel = tmpFile
+            return if(fileChannel != null) {
+                flushToDisk(fileChannel, accumulator)
+                accumulator.release()
+                fileChannel.position(0)
+                val fileSize = fileChannel.size().toIntOrNull() ?: let {
+                    fileChannel.close()
+                    throw ContentTooLargeException("Request body is too large", null)
+                }
+                fileSize to fileChannel
+            } else {
+                accumulator.readableBytes() to Channels.newChannel(ByteBufInputStream(accumulator))
+            }
+        }
+
+        fun rollback() {
+            stream.close()
+            digest.release()
+            tmpFile?.close()
+        }
+    }
+
+    private var inProgressPutRequest: InProgressPutRequest? = null
+    private var inProgressGetRequest: InProgressGetRequest? = null
+
+    override fun channelRead0(ctx: ChannelHandlerContext, msg: CacheMessage) {
+        when (msg) {
+            is CacheGetRequest -> handleGetRequest(ctx, msg)
+            is CachePutRequest -> handlePutRequest(ctx, msg)
+            is LastCacheContent -> handleLastCacheContent(ctx, msg)
+            is CacheContent -> handleCacheContent(ctx, msg)
+            else -> ctx.fireChannelRead(msg)
+        }
+    }
+
+    private fun handleGetRequest(ctx: ChannelHandlerContext, msg: CacheGetRequest) {
+        log.debug(ctx) {
+            "Fetching ${msg.key} from memcache"
+        }
+        val key = ctx.alloc().buffer().also {
+            it.writeBytes(processCacheKey(msg.key, digestAlgorithm))
+        }
+        val responseHandler = object : MemcacheResponseHandler {
+            override fun responseReceived(response: BinaryMemcacheResponse) {
+                val status = response.status()
+                when (status) {
+                    BinaryMemcacheResponseStatus.SUCCESS -> {
+                        log.debug(ctx) {
+                            "Cache hit for key ${msg.key} on memcache"
+                        }
+                        inProgressGetRequest = InProgressGetRequest(msg.key, ctx)
+                    }
+
+                    BinaryMemcacheResponseStatus.KEY_ENOENT -> {
+                        log.debug(ctx) {
+                            "Cache miss for key ${msg.key} on memcache"
+                        }
+                        ctx.writeAndFlush(CacheValueNotFoundResponse())
+                    }
+                }
+            }
+
+            override fun contentReceived(content: MemcacheContent) {
+                log.trace(ctx) {
+                    "${if(content is LastMemcacheContent) "Last chunk" else "Chunk"} of ${content.content().readableBytes()} bytes received from memcache for key ${msg.key}"
+                }
+                inProgressGetRequest?.write(content.content())
+                if (content is LastMemcacheContent) {
+                    inProgressGetRequest?.commit()
+                }
+            }
+
+            override fun exceptionCaught(ex: Throwable) {
+                inProgressGetRequest?.let {
+                    inProgressGetRequest = null
+                    it.rollback()
+                }
+                this@MemcacheCacheHandler.exceptionCaught(ctx, ex)
+            }
+        }
+        client.sendRequest(key.retainedDuplicate(), responseHandler).thenAccept { requestHandle ->
+            log.trace(ctx) {
+                "Sending GET request for key ${msg.key} to memcache"
+            }
+            val request = DefaultBinaryMemcacheRequest(key).apply {
+                setOpcode(BinaryMemcacheOpcodes.GET)
+            }
+            requestHandle.sendRequest(request)
+        }
+    }
+
+    private fun handlePutRequest(ctx: ChannelHandlerContext, msg: CachePutRequest) {
+        val key = ctx.alloc().buffer().also {
+            it.writeBytes(processCacheKey(msg.key, digestAlgorithm))
+        }
+        val responseHandler = object : MemcacheResponseHandler {
+            override fun responseReceived(response: BinaryMemcacheResponse) {
+                val status = response.status()
+                when (status) {
+                    BinaryMemcacheResponseStatus.SUCCESS -> {
+                        log.debug(ctx) {
+                            "Inserted key ${msg.key} into memcache"
+                        }
+                        ctx.writeAndFlush(CachePutResponse(msg.key))
+                    }
+                    else -> this@MemcacheCacheHandler.exceptionCaught(ctx, MemcacheException(status))
+                }
+            }
+
+            override fun contentReceived(content: MemcacheContent) {}
+
+            override fun exceptionCaught(ex: Throwable) {
+                this@MemcacheCacheHandler.exceptionCaught(ctx, ex)
+            }
+        }
+
+        val requestController = client.sendRequest(key.retainedDuplicate(), responseHandler).whenComplete { _, ex ->
+            ex?.let {
+                this@MemcacheCacheHandler.exceptionCaught(ctx, ex)
+            }
+        }
+        inProgressPutRequest = InProgressPutRequest(ctx.channel(), msg.metadata, key, requestController, ctx.alloc())
+    }
+
+    private fun handleCacheContent(ctx: ChannelHandlerContext, msg: CacheContent) {
+        inProgressPutRequest?.let { request ->
+            log.trace(ctx) {
+                "Received chunk of ${msg.content().readableBytes()} bytes for memcache"
+            }
+            request.write(msg.content())
+        }
+    }
+
+    private fun handleLastCacheContent(ctx: ChannelHandlerContext, msg: LastCacheContent) {
+        inProgressPutRequest?.let { request ->
+            inProgressPutRequest = null
+            log.trace(ctx) {
+                "Received last chunk of ${msg.content().readableBytes()} bytes for memcache"
+            }
+            request.write(msg.content())
+            val key = request.digest.retainedDuplicate()
+            val (payloadSize, payloadSource) = request.commit()
+            val extras = ctx.alloc().buffer(8, 8)
+            extras.writeInt(0)
+            extras.writeInt(encodeExpiry(maxAge))
+            val totalBodyLength = request.digest.readableBytes() + extras.readableBytes() + payloadSize
+            request.requestController.whenComplete { requestController, ex ->
+                if(ex == null) {
+                    log.trace(ctx) {
+                        "Sending SET request to memcache"
+                    }
+                    requestController.sendRequest(DefaultBinaryMemcacheRequest().apply {
+                        setOpcode(BinaryMemcacheOpcodes.SET)
+                        setKey(key)
+                        setExtras(extras)
+                        setTotalBodyLength(totalBodyLength)
+                    })
+                    log.trace(ctx) {
+                        "Sending request payload to memcache"
+                    }
+                    payloadSource.use { source ->
+                        val bb = ByteBuffer.allocate(chunkSize)
+                        while (true) {
+                            val read = source.read(bb)
+                            bb.limit()
+                            if(read >= 0 && bb.position() < chunkSize && bb.hasRemaining()) {
+                                continue
+                            }
+                            val chunk = ctx.alloc().buffer(chunkSize)
+                            bb.flip()
+                            chunk.writeBytes(bb)
+                            bb.clear()
+                            log.trace(ctx) {
+                                "Sending ${chunk.readableBytes()} bytes chunk to memcache"
+                            }
+                            if(read < 0) {
+                                requestController.sendContent(DefaultLastMemcacheContent(chunk))
+                                break
+                            } else {
+                                requestController.sendContent(DefaultMemcacheContent(chunk))
+                            }
+                        }
+                    }
+                } else {
+                    payloadSource.close()
+                }
+            }
+        }
+    }
+
+    override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
+        inProgressGetRequest?.let {
+            inProgressGetRequest = null
+            it.rollback()
+        }
+        inProgressPutRequest?.let {
+            inProgressPutRequest = null
+            it.requestController.thenAccept { controller ->
+                controller.exceptionCaught(cause)
+            }
+            it.rollback()
+        }
+        super.exceptionCaught(ctx, cause)
+    }
+}

rbcs-server-memcache/src/main/kotlin/net/woggioni/rbcs/server/memcache/MemcacheCacheProvider.kt

@@ -0,0 +1,102 @@
+package net.woggioni.rbcs.server.memcache
+
+import net.woggioni.rbcs.api.CacheProvider
+import net.woggioni.rbcs.api.exception.ConfigurationException
+import net.woggioni.rbcs.common.HostAndPort
+import net.woggioni.rbcs.common.RBCS
+import net.woggioni.rbcs.common.Xml
+import net.woggioni.rbcs.common.Xml.Companion.asIterable
+import net.woggioni.rbcs.common.Xml.Companion.renderAttribute
+import org.w3c.dom.Document
+import org.w3c.dom.Element
+import java.time.Duration
+import java.time.temporal.ChronoUnit
+
+
+class MemcacheCacheProvider : CacheProvider<MemcacheCacheConfiguration> {
+    override fun getXmlSchemaLocation() = "jpms://net.woggioni.rbcs.server.memcache/net/woggioni/rbcs/server/memcache/schema/rbcs-memcache.xsd"
+
+    override fun getXmlType() = "memcacheCacheType"
+
+    override fun getXmlNamespace() = "urn:net.woggioni.rbcs.server.memcache"
+
+    val xmlNamespacePrefix : String
+        get() = "rbcs-memcache"
+
+    override fun deserialize(el: Element): MemcacheCacheConfiguration {
+        val servers = mutableListOf<MemcacheCacheConfiguration.Server>()
+        val maxAge = el.renderAttribute("max-age")
+            ?.let(Duration::parse)
+            ?: Duration.ofDays(1)
+        val chunkSize = el.renderAttribute("chunk-size")
+            ?.let(Integer::decode)
+            ?: 0x10000
+        val compressionLevel = el.renderAttribute("compression-level")
+            ?.let(Integer::decode)
+            ?: -1
+        val compressionMode = el.renderAttribute("compression-mode")
+            ?.let {
+                when (it) {
+                    "deflate" -> MemcacheCacheConfiguration.CompressionMode.DEFLATE
+                    else -> MemcacheCacheConfiguration.CompressionMode.DEFLATE
+                }
+            }
+        val digestAlgorithm = el.renderAttribute("digest")
+        for (child in el.asIterable()) {
+            when (child.nodeName) {
+                "server" -> {
+                    val host = child.renderAttribute("host") ?: throw ConfigurationException("host attribute is required")
+                    val port = child.renderAttribute("port")?.toInt() ?: throw ConfigurationException("port attribute is required")
+                    val maxConnections = child.renderAttribute("max-connections")?.toInt() ?: 1
+                    val connectionTimeout = child.renderAttribute("connection-timeout")
+                        ?.let(Duration::parse)
+                        ?.let(Duration::toMillis)
+                        ?.let(Long::toInt)
+                        ?: 10000
+                    servers.add(MemcacheCacheConfiguration.Server(HostAndPort(host, port), connectionTimeout, maxConnections))
+                }
+            }
+        }
+
+        return MemcacheCacheConfiguration(
+            servers,
+            maxAge,
+            digestAlgorithm,
+            compressionMode,
+            compressionLevel,
+            chunkSize
+        )
+    }
+
+    override fun serialize(doc: Document, cache: MemcacheCacheConfiguration) = cache.run {
+        val result = doc.createElement("cache")
+        Xml.of(doc, result) {
+            attr("xmlns:${xmlNamespacePrefix}", xmlNamespace, namespaceURI = "http://www.w3.org/2000/xmlns/")
+            attr("xs:type", "${xmlNamespacePrefix}:$xmlType", RBCS.XML_SCHEMA_NAMESPACE_URI)
+            for (server in servers) {
+                node("server") {
+                    attr("host", server.endpoint.host)
+                    attr("port", server.endpoint.port.toString())
+                    server.connectionTimeoutMillis?.let { connectionTimeoutMillis ->
+                        attr("connection-timeout", Duration.of(connectionTimeoutMillis.toLong(), ChronoUnit.MILLIS).toString())
+                    }
+                    attr("max-connections", server.maxConnections.toString())
+                }
+            }
+            attr("max-age", maxAge.toString())
+            attr("chunk-size", chunkSize.toString())
+            digestAlgorithm?.let { digestAlgorithm ->
+                attr("digest", digestAlgorithm)
+            }
+            compressionMode?.let { compressionMode ->
+                attr(
+                    "compression-mode", when (compressionMode) {
+                        MemcacheCacheConfiguration.CompressionMode.DEFLATE -> "deflate"
+                    }
+                )
+            }
+            attr("compression-level", compressionLevel.toString())
+        }
+        result
+    }
+}

rbcs-server-memcache/src/main/kotlin/net/woggioni/rbcs/server/memcache/client/MemcacheClient.kt

@@ -0,0 +1,214 @@
+package net.woggioni.rbcs.server.memcache.client
+
+
+import io.netty.bootstrap.Bootstrap
+import io.netty.buffer.ByteBuf
+import io.netty.channel.Channel
+import io.netty.channel.ChannelFutureListener
+import io.netty.channel.ChannelHandlerContext
+import io.netty.channel.ChannelOption
+import io.netty.channel.ChannelPipeline
+import io.netty.channel.SimpleChannelInboundHandler
+import io.netty.channel.nio.NioEventLoopGroup
+import io.netty.channel.pool.AbstractChannelPoolHandler
+import io.netty.channel.pool.ChannelPool
+import io.netty.channel.pool.FixedChannelPool
+import io.netty.channel.socket.nio.NioSocketChannel
+import io.netty.handler.codec.memcache.LastMemcacheContent
+import io.netty.handler.codec.memcache.MemcacheContent
+import io.netty.handler.codec.memcache.MemcacheObject
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheClientCodec
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheRequest
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheResponse
+import io.netty.util.concurrent.GenericFutureListener
+import net.woggioni.rbcs.common.HostAndPort
+import net.woggioni.rbcs.common.createLogger
+import net.woggioni.rbcs.common.warn
+import net.woggioni.rbcs.server.memcache.MemcacheCacheConfiguration
+import net.woggioni.rbcs.server.memcache.MemcacheCacheHandler
+import java.io.IOException
+import java.net.InetSocketAddress
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.ConcurrentHashMap
+import io.netty.util.concurrent.Future as NettyFuture
+
+
+class MemcacheClient(private val servers: List<MemcacheCacheConfiguration.Server>, private val chunkSize : Int) : AutoCloseable {
+
+    private companion object {
+        private val log = createLogger<MemcacheCacheHandler>()
+    }
+
+    private val group: NioEventLoopGroup
+    private val connectionPool: MutableMap<HostAndPort, ChannelPool> = ConcurrentHashMap()
+
+    init {
+        group = NioEventLoopGroup()
+    }
+
+    private fun newConnectionPool(server: MemcacheCacheConfiguration.Server): FixedChannelPool {
+        val bootstrap = Bootstrap().apply {
+            group(group)
+            channel(NioSocketChannel::class.java)
+            option(ChannelOption.SO_KEEPALIVE, true)
+            remoteAddress(InetSocketAddress(server.endpoint.host, server.endpoint.port))
+            server.connectionTimeoutMillis?.let {
+                option(ChannelOption.CONNECT_TIMEOUT_MILLIS, it)
+            }
+        }
+        val channelPoolHandler = object : AbstractChannelPoolHandler() {
+
+            override fun channelCreated(ch: Channel) {
+                val pipeline: ChannelPipeline = ch.pipeline()
+                pipeline.addLast(BinaryMemcacheClientCodec(chunkSize, true))
+            }
+        }
+        return FixedChannelPool(bootstrap, channelPoolHandler, server.maxConnections)
+    }
+
+    fun sendRequest(
+        key: ByteBuf,
+        responseHandler: MemcacheResponseHandler
+    ): CompletableFuture<MemcacheRequestController> {
+        val server = if (servers.size > 1) {
+            var checksum = 0
+            while (key.readableBytes() > 4) {
+                val byte = key.readInt()
+                checksum = checksum xor byte
+            }
+            while (key.readableBytes() > 0) {
+                val byte = key.readByte()
+                checksum = checksum xor byte.toInt()
+            }
+            servers[checksum % servers.size]
+        } else {
+            servers.first()
+        }
+        key.release()
+
+        val response = CompletableFuture<MemcacheRequestController>()
+        // Custom handler for processing responses
+        val pool = connectionPool.computeIfAbsent(server.endpoint) {
+            newConnectionPool(server)
+        }
+        pool.acquire().addListener(object : GenericFutureListener<NettyFuture<Channel>> {
+            override fun operationComplete(channelFuture: NettyFuture<Channel>) {
+                if (channelFuture.isSuccess) {
+
+                    var requestSent = false
+                    var requestBodySent = false
+                    var requestFinished = false
+                    var responseReceived = false
+                    var responseBodyReceived = false
+                    var responseFinished = false
+                    var requestBodySize = 0
+                    var requestBodyBytesSent = 0
+
+
+
+                    val channel = channelFuture.now
+                    var connectionClosedByTheRemoteServer = true
+                    val closeCallback = {
+                        if (connectionClosedByTheRemoteServer) {
+                            val ex = IOException("The memcache server closed the connection")
+                            val completed = response.completeExceptionally(ex)
+                            if(!completed) responseHandler.exceptionCaught(ex)
+                            log.warn {
+                                "RequestSent: $requestSent, RequestBodySent: $requestBodySent, " +
+                                "RequestFinished: $requestFinished, ResponseReceived: $responseReceived, " +
+                                "ResponseBodyReceived: $responseBodyReceived, ResponseFinished: $responseFinished, " +
+                                "RequestBodySize: $requestBodySize, RequestBodyBytesSent: $requestBodyBytesSent"
+                            }
+                        }
+                        pool.release(channel)
+                    }
+                    val closeListener = ChannelFutureListener {
+                        closeCallback()
+                    }
+                    channel.closeFuture().addListener(closeListener)
+                    val pipeline = channel.pipeline()
+                    val handler = object : SimpleChannelInboundHandler<MemcacheObject>() {
+
+                        override fun handlerAdded(ctx: ChannelHandlerContext) {
+                            channel.closeFuture().removeListener(closeListener)
+                        }
+
+                        override fun channelRead0(
+                            ctx: ChannelHandlerContext,
+                            msg: MemcacheObject
+                        ) {
+                            when (msg) {
+                                is BinaryMemcacheResponse -> {
+                                    responseHandler.responseReceived(msg)
+                                    responseReceived = true
+                                }
+
+                                is LastMemcacheContent -> {
+                                    responseFinished = true
+                                    responseHandler.contentReceived(msg)
+                                    pipeline.remove(this)
+                                    pool.release(channel)
+                                }
+
+                                is MemcacheContent -> {
+                                    responseBodyReceived = true
+                                    responseHandler.contentReceived(msg)
+                                }
+                            }
+                        }
+
+                        override fun channelInactive(ctx: ChannelHandlerContext) {
+                            closeCallback()
+                            ctx.fireChannelInactive()
+                        }
+
+                        override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
+                            connectionClosedByTheRemoteServer = false
+                            ctx.close()
+                            pool.release(channel)
+                            responseHandler.exceptionCaught(cause)
+                        }
+                    }
+
+                    channel.pipeline()
+                        .addLast("client-handler", handler)
+                    response.complete(object : MemcacheRequestController {
+
+                        override fun sendRequest(request: BinaryMemcacheRequest) {
+                            requestBodySize = request.totalBodyLength() - request.keyLength() - request.extrasLength()
+                            channel.writeAndFlush(request)
+                            requestSent = true
+                        }
+
+                        override fun sendContent(content: MemcacheContent) {
+                            val size = content.content().readableBytes()
+                            channel.writeAndFlush(content).addListener {
+                                requestBodyBytesSent += size
+                                requestBodySent = true
+                                if(content is LastMemcacheContent) {
+                                    requestFinished = true
+                                }
+                            }
+                        }
+
+                        override fun exceptionCaught(ex: Throwable) {
+                            connectionClosedByTheRemoteServer = false
+                            channel.close()
+                        }
+                    })
+                } else {
+                    response.completeExceptionally(channelFuture.cause())
+                }
+            }
+        })
+        return response
+    }
+
+    fun shutDown(): NettyFuture<*> {
+        return group.shutdownGracefully()
+    }
+
+    override fun close() {
+        shutDown().sync()
+    }
+}

rbcs-server-memcache/src/main/kotlin/net/woggioni/rbcs/server/memcache/client/MemcacheRequestController.kt

@@ -0,0 +1,13 @@
+package net.woggioni.rbcs.server.memcache.client
+
+import io.netty.handler.codec.memcache.MemcacheContent
+import io.netty.handler.codec.memcache.binary.BinaryMemcacheRequest
+
+interface MemcacheRequestController {
+
+    fun sendRequest(request : BinaryMemcacheRequest)
+
+    fun sendContent(content : MemcacheContent)
+
+    fun exceptionCaught(ex : Throwable)
+}