Fixed probably thread blocking issues #455

src/main/java/org/redisson/RedissonCountDownLatch.java

@@ -53,7 +53,7 @@ public class RedissonCountDownLatch extends RedissonObject implements RCountDown
     public void await() throws InterruptedException {
         Future<RedissonCountDownLatchEntry> promise = subscribe();
         try {
-            promise.await();
+            get(promise);
 
             while (getCount() > 0) {
                 // waiting for open state
@@ -71,7 +71,7 @@ public class RedissonCountDownLatch extends RedissonObject implements RCountDown
     public boolean await(long time, TimeUnit unit) throws InterruptedException {
         Future<RedissonCountDownLatchEntry> promise = subscribe();
         try {
-            if (!promise.await(time, unit)) {
+            if (!await(promise, time, unit)) {
                 return false;
             }
 

src/main/java/org/redisson/RedissonLock.java

@@ -110,7 +110,7 @@ public class RedissonLock extends RedissonExpirable implements RLock {
         }
 
         Future<RedissonLockEntry> future = subscribe();
-        future.sync();
+        get(future);
 
         try {
             while (true) {
@@ -229,7 +229,7 @@ public class RedissonLock extends RedissonExpirable implements RLock {
         }
 
         Future<RedissonLockEntry> future = subscribe();
-        if (!future.await(time, TimeUnit.MILLISECONDS)) {
+        if (!await(future, time, TimeUnit.MILLISECONDS)) {
             future.addListener(new FutureListener<RedissonLockEntry>() {
                 @Override
                 public void operationComplete(Future<RedissonLockEntry> future) throws Exception {

src/main/java/org/redisson/RedissonObject.java

@@ -15,6 +15,8 @@
  */
 package org.redisson;
 
+import java.util.concurrent.TimeUnit;
+
 import org.redisson.client.codec.Codec;
 import org.redisson.client.protocol.RedisCommands;
 import org.redisson.command.CommandAsyncExecutor;
@@ -45,6 +47,10 @@ abstract class RedissonObject implements RObject {
         this(commandExecutor.getConnectionManager().getCodec(), commandExecutor, name);
     }
 
+    protected boolean await(Future<?> future, long timeout, TimeUnit timeoutUnit) throws InterruptedException {
+        return commandExecutor.await(future, timeout, timeoutUnit);
+    }
+    
     protected <V> V get(Future<V> future) {
         return commandExecutor.get(future);
     }

src/main/java/org/redisson/RedissonSemaphore.java

@@ -70,7 +70,8 @@ public class RedissonSemaphore extends RedissonExpirable implements RSemaphore {
             return;
         }
 
-        Future<RedissonLockEntry> future = subscribe().sync();
+        Future<RedissonLockEntry> future = subscribe();
+        get(future);
         try {
             while (true) {
                 if (tryAcquire(permits)) {
@@ -113,7 +114,7 @@ public class RedissonSemaphore extends RedissonExpirable implements RSemaphore {
 
         long time = unit.toMillis(waitTime);
         Future<RedissonLockEntry> future = subscribe();
-        if (!future.await(time, TimeUnit.MILLISECONDS)) {
+        if (!await(future, time, TimeUnit.MILLISECONDS)) {
             return false;
         }
 

src/main/java/org/redisson/client/RedisConnection.java

@@ -15,6 +15,7 @@
  */
 package org.redisson.client;
 
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
 import org.redisson.client.codec.Codec;
@@ -111,21 +112,34 @@ public class RedisConnection implements RedisCommands {
         return redisClient;
     }
 
-    public <R> R await(Future<R> cmd) {
+    public <R> R await(Future<R> future) {
+        final CountDownLatch l = new CountDownLatch(1);
+        future.addListener(new FutureListener<R>() {
+            @Override
+            public void operationComplete(Future<R> future) throws Exception {
+                l.countDown();
+            }
+        });
+        
+        try {
             // TODO change connectTimeout to timeout
-        if (!cmd.awaitUninterruptibly(redisClient.getTimeout(), TimeUnit.MILLISECONDS)) {
-            Promise<R> promise = (Promise<R>)cmd;
+            if (!l.await(redisClient.getTimeout(), TimeUnit.MILLISECONDS)) {
+                Promise<R> promise = (Promise<R>)future;
                 RedisTimeoutException ex = new RedisTimeoutException("Command execution timeout for " + redisClient.getAddr());
                 promise.setFailure(ex);
                 throw ex;
             }
-        if (!cmd.isSuccess()) {
-            if (cmd.cause() instanceof RedisException) {
-                throw (RedisException) cmd.cause();
+            if (!future.isSuccess()) {
+                if (future.cause() instanceof RedisException) {
+                    throw (RedisException) future.cause();
+                }
+                throw new RedisException("Unexpected exception while processing command", future.cause());
             }
-            throw new RedisException("Unexpected exception while processing command", cmd.cause());
+            return future.getNow();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            return null;
         }
-        return cmd.getNow();
     }
 
     public <T> T sync(RedisStrictCommand<T> command, Object ... params) {

src/main/java/org/redisson/client/handler/CommandDecoder.java

@@ -1,5 +1,4 @@
 /**
- * Copyright 2014 Nikita Koksharov, Nickolay Borbit
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -206,9 +205,7 @@ public class CommandDecoder extends ReplayingDecoder<State> {
                 }
             }
         } else if (code == ':') {
-            String status = in.readBytes(in.bytesBefore((byte) '\r')).toString(CharsetUtil.UTF_8);
-            in.skipBytes(2);
-            Object result = Long.valueOf(status);
+            Long result = readLong(in);
             handleResult(data, parts, result, false, channel);
         } else if (code == '$') {
             ByteBuf buf = readBytes(in);

src/main/java/org/redisson/client/handler/CommandsQueue.java

@@ -23,10 +23,10 @@ import org.redisson.client.protocol.QueueCommand;
 import org.redisson.client.protocol.QueueCommandHolder;
 
 import io.netty.channel.Channel;
-import io.netty.channel.ChannelDuplexHandler;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelOutboundHandlerAdapter;
 import io.netty.channel.ChannelPromise;
 import io.netty.util.AttributeKey;
 import io.netty.util.internal.PlatformDependent;
@@ -37,7 +37,7 @@ import io.netty.util.internal.PlatformDependent;
  * @author Nikita Koksharov
  *
  */
-public class CommandsQueue extends ChannelDuplexHandler {
+public class CommandsQueue extends ChannelOutboundHandlerAdapter {
 
     public static final AttributeKey<QueueCommand> CURRENT_COMMAND = AttributeKey.valueOf("promise");
 

src/main/java/org/redisson/command/CommandAsyncExecutor.java

@@ -18,6 +18,7 @@ package org.redisson.command;
 import java.net.InetSocketAddress;
 import java.util.Collection;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 import org.redisson.SlotCallback;
 import org.redisson.client.RedisException;
@@ -38,6 +39,8 @@ public interface CommandAsyncExecutor {
 
     <V> RedisException convertException(Future<V> future);
 
+    boolean await(Future<?> future, long timeout, TimeUnit timeoutUnit) throws InterruptedException;
+    
     <V> V get(Future<V> future);
 
     <T, R> Future<R> writeAsync(Integer slot, Codec codec, RedisCommand<T> command, Object ... params);

src/main/java/org/redisson/command/CommandAsyncService.java

@@ -22,9 +22,11 @@ import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
 
 import org.redisson.RedisClientResult;
 import org.redisson.RedissonShutdownException;
@@ -82,13 +84,38 @@ public class CommandAsyncService implements CommandAsyncExecutor {
 
     @Override
     public <V> V get(Future<V> future) {
-        future.awaitUninterruptibly();
+        final CountDownLatch l = new CountDownLatch(1);
+        future.addListener(new FutureListener<V>() {
+            @Override
+            public void operationComplete(Future<V> future) throws Exception {
+                l.countDown();
+            }
+        });
+        try {
+            l.await();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+        // commented out due to blocking issues up to 200 ms per minute for each thread
+        // future.awaitUninterruptibly();
         if (future.isSuccess()) {
             return future.getNow();
         }
         throw convertException(future);
     }
 
+    @Override
+    public boolean await(Future<?> future, long timeout, TimeUnit timeoutUnit) throws InterruptedException {
+        final CountDownLatch l = new CountDownLatch(1);
+        future.addListener(new FutureListener<Object>() {
+            @Override
+            public void operationComplete(Future<Object> future) throws Exception {
+                l.countDown();
+            }
+        });
+        return l.await(timeout, timeoutUnit);
+    }
+    
     @Override
     public <T, R> Future<R> readAsync(InetSocketAddress client, String key, Codec codec, RedisCommand<T> command, Object ... params) {
         Promise<R> mainPromise = connectionManager.newPromise();

src/main/java/org/redisson/connection/pool/ConnectionPool.java

@@ -153,7 +153,7 @@ abstract class ConnectionPool<T extends RedisConnection> {
             }
         }
 
-        StringBuilder errorMsg = new StringBuilder("Publish/Subscribe connection pool exhausted! All connections are busy. Try to increase Publish/Subscribe connection pool size.");
+        StringBuilder errorMsg = new StringBuilder("Connection pool exhausted! All connections are busy. Increase connection pool size.");
 //        if (!freezed.isEmpty()) {
 //            errorMsg.append(" Disconnected hosts: " + freezed);
 //        }