shared event executor group between server and clients

- improved documentation
- closed memcache client's thread pools

rbcs-api/build.gradle

@@ -5,6 +5,7 @@ plugins {
 }
 
 dependencies {
+    api catalog.netty.common
     api catalog.netty.buffer
     api catalog.netty.handler
 }

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

@@ -4,6 +4,7 @@ module net.woggioni.rbcs.api {
     requires io.netty.buffer;
     requires io.netty.handler;
     requires io.netty.transport;
+    requires io.netty.common;
     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/AsyncCloseable.java

@@ -0,0 +1,13 @@
+package net.woggioni.rbcs.api;
+
+import java.util.concurrent.CompletableFuture;
+
+public interface AsyncCloseable extends AutoCloseable {
+
+    CompletableFuture<Void> asyncClose();
+
+    @Override
+    default void close() throws Exception {
+        asyncClose().get();
+    }
+}

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

@@ -1,7 +1,15 @@
 package net.woggioni.rbcs.api;
 
+import io.netty.channel.ChannelFactory;
 import io.netty.channel.ChannelHandler;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.socket.DatagramChannel;
+import io.netty.channel.socket.SocketChannel;
 
-public interface CacheHandlerFactory extends AutoCloseable {
-    ChannelHandler newHandler();
+public interface CacheHandlerFactory extends AsyncCloseable {
+    ChannelHandler newHandler(
+            EventLoopGroup eventLoopGroup,
+            ChannelFactory<SocketChannel> socketChannelFactory,
+            ChannelFactory<DatagramChannel> datagramChannelFactory
+    );
 }

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

@@ -83,17 +83,6 @@ public class Configuration {
         Group extract(X509Certificate cert);
     }
 
-    @Value
-    public static class Throttling {
-        KeyStore keyStore;
-        TrustStore trustStore;
-        boolean verifyClients;
-    }
-
-    public enum ClientCertificate {
-        REQUIRED, OPTIONAL
-    }
-
     @Value
     public static class Tls {
         KeyStore keyStore;