Use safe-construction when calling fireChannelOpen() etc. This code is

based on the code of the following pull request:
https://github.com/netty/netty/pull/18

It just make it apply again to current master

src/main/java/org/jboss/netty/channel/local/DefaultLocalChannel.java

@@ -59,7 +59,16 @@ final class DefaultLocalChannel extends AbstractChannel implements LocalChannel
     volatile LocalAddress localAddress;
     volatile LocalAddress remoteAddress;
 
-    DefaultLocalChannel(LocalServerChannel parent, ChannelFactory factory, ChannelPipeline pipeline, ChannelSink sink, DefaultLocalChannel pairedChannel) {
+    static DefaultLocalChannel create(LocalServerChannel parent,
+            ChannelFactory factory, ChannelPipeline pipeline, ChannelSink sink,
+            DefaultLocalChannel pairedChannel) {
+        DefaultLocalChannel instance = new DefaultLocalChannel(parent, factory, pipeline, sink,
+                        pairedChannel);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private DefaultLocalChannel(LocalServerChannel parent, ChannelFactory factory, ChannelPipeline pipeline, ChannelSink sink, DefaultLocalChannel pairedChannel) {
         super(parent, factory, pipeline, sink);
         this.pairedChannel = pairedChannel;
         config = new DefaultChannelConfig();
@@ -73,7 +82,6 @@ final class DefaultLocalChannel extends AbstractChannel implements LocalChannel
             }
         });
 
-        fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/local/DefaultLocalClientChannelFactory.java

@@ -41,7 +41,7 @@ public class DefaultLocalClientChannelFactory implements LocalClientChannelFacto
 
     @Override
     public LocalChannel newChannel(ChannelPipeline pipeline) {
-        return new DefaultLocalChannel(null, this, pipeline, sink, null);
+        return DefaultLocalChannel.create(null, this, pipeline, sink, null);
     }
 
     /**

src/main/java/org/jboss/netty/channel/local/DefaultLocalServerChannel.java

@@ -32,17 +32,27 @@ import org.jboss.netty.channel.DefaultServerChannelConfig;
  * @author <a href="http://gleamynode.net/">Trustin Lee</a>
  * @version $Rev$, $Date$
  */
-final class DefaultLocalServerChannel extends AbstractServerChannel
-                                      implements LocalServerChannel {
+final class DefaultLocalServerChannel extends AbstractServerChannel implements
+        LocalServerChannel {
 
     final ChannelConfig channelConfig;
+
     final AtomicBoolean bound = new AtomicBoolean();
+
     volatile LocalAddress localAddress;
 
-    DefaultLocalServerChannel(ChannelFactory factory, ChannelPipeline pipeline, ChannelSink sink) {
+    static DefaultLocalServerChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink) {
+        DefaultLocalServerChannel instance =
+                new DefaultLocalServerChannel(factory, pipeline, sink);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private DefaultLocalServerChannel(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink) {
         super(factory, pipeline, sink);
         channelConfig = new DefaultServerChannelConfig();
-        fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/local/DefaultLocalServerChannelFactory.java

@@ -41,7 +41,7 @@ public class DefaultLocalServerChannelFactory implements LocalServerChannelFacto
 
     @Override
     public LocalServerChannel newChannel(ChannelPipeline pipeline) {
-        return new DefaultLocalServerChannel(this, pipeline, sink);
+        return DefaultLocalServerChannel.create(this, pipeline, sink);
     }
 
     /**

src/main/java/org/jboss/netty/channel/local/LocalClientChannelSink.java

@@ -128,8 +128,7 @@ final class LocalClientChannelSink extends AbstractChannelSink {
         }
 
         future.setSuccess();
-        DefaultLocalChannel acceptedChannel = new DefaultLocalChannel(
-                serverChannel, serverChannel.getFactory(), pipeline, this, channel);
+        DefaultLocalChannel acceptedChannel = DefaultLocalChannel.create(serverChannel, serverChannel.getFactory(), pipeline, this, channel);
         channel.pairedChannel = acceptedChannel;
 
         bind(channel, succeededFuture(channel), new LocalAddress(LocalAddress.EPHEMERAL));

src/main/java/org/jboss/netty/channel/socket/http/HttpTunnelAcceptedChannel.java

@@ -42,13 +42,27 @@ import org.jboss.netty.channel.socket.SocketChannelConfig;
  */
 class HttpTunnelAcceptedChannel extends AbstractChannel implements
         SocketChannel, HttpTunnelAcceptedChannelReceiver {
+
     private final HttpTunnelAcceptedChannelConfig config;
 
     private final HttpTunnelAcceptedChannelSink sink;
 
     private final InetSocketAddress remoteAddress;
 
-    protected HttpTunnelAcceptedChannel(HttpTunnelServerChannel parent,
+    protected static HttpTunnelAcceptedChannel create(
+            HttpTunnelServerChannel parent, ChannelFactory factory,
+            ChannelPipeline pipeline, HttpTunnelAcceptedChannelSink sink,
+            InetSocketAddress remoteAddress,
+            HttpTunnelAcceptedChannelConfig config) {
+        HttpTunnelAcceptedChannel instance = new HttpTunnelAcceptedChannel(parent, factory, pipeline, sink,
+                        remoteAddress, config);
+        fireChannelOpen(instance);
+        fireChannelBound(instance, instance.getLocalAddress());
+        fireChannelConnected(instance, instance.getRemoteAddress());
+        return instance;
+    }
+
+    private HttpTunnelAcceptedChannel(HttpTunnelServerChannel parent,
             ChannelFactory factory, ChannelPipeline pipeline,
             HttpTunnelAcceptedChannelSink sink,
             InetSocketAddress remoteAddress,
@@ -57,9 +71,6 @@ class HttpTunnelAcceptedChannel extends AbstractChannel implements
         this.config = config;
         this.sink = sink;
         this.remoteAddress = remoteAddress;
-        fireChannelOpen(this);
-        fireChannelBound(this, getLocalAddress());
-        fireChannelConnected(this, getRemoteAddress());
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/http/HttpTunnelClientChannel.java

@@ -73,10 +73,20 @@ public class HttpTunnelClientChannel extends AbstractChannel implements
 
     private final SaturationManager saturationManager;
 
+    protected static HttpTunnelClientChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, HttpTunnelClientChannelSink sink,
+            ClientSocketChannelFactory outboundFactory,
+            ChannelGroup realConnections) {
+        HttpTunnelClientChannel instance = new HttpTunnelClientChannel(factory, pipeline, sink,
+                        outboundFactory, realConnections);
+        Channels.fireChannelOpen(instance);
+        return instance;
+    }
+
     /**
      * @see HttpTunnelClientChannelFactory#newChannel(ChannelPipeline)
      */
-    protected HttpTunnelClientChannel(ChannelFactory factory,
+    private HttpTunnelClientChannel(ChannelFactory factory,
             ChannelPipeline pipeline, HttpTunnelClientChannelSink sink,
             ClientSocketChannelFactory outboundFactory,
             ChannelGroup realConnections) {
@@ -97,7 +107,6 @@ public class HttpTunnelClientChannel extends AbstractChannel implements
         realConnections.add(sendChannel);
         realConnections.add(pollChannel);
 
-        Channels.fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/http/HttpTunnelClientChannelFactory.java

@@ -43,8 +43,8 @@ public class HttpTunnelClientChannelFactory implements
 
     @Override
     public HttpTunnelClientChannel newChannel(ChannelPipeline pipeline) {
-        return new HttpTunnelClientChannel(this, pipeline,
-                new HttpTunnelClientChannelSink(), factory, realConnections);
+        return HttpTunnelClientChannel.create(this, pipeline, new HttpTunnelClientChannelSink(), factory,
+                realConnections);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/http/HttpTunnelServerChannel.java

@@ -49,18 +49,25 @@ public class HttpTunnelServerChannel extends AbstractServerChannel implements
                 }
             };
 
-    protected HttpTunnelServerChannel(HttpTunnelServerChannelFactory factory,
+    protected static HttpTunnelServerChannel create(
+            HttpTunnelServerChannelFactory factory, ChannelPipeline pipeline) {
+        HttpTunnelServerChannel instance = new HttpTunnelServerChannel(factory, pipeline);
+        Channels.fireChannelOpen(instance);
+        return instance;
+    }
+
+    private HttpTunnelServerChannel(HttpTunnelServerChannelFactory factory,
             ChannelPipeline pipeline) {
         super(factory, pipeline, new HttpTunnelServerChannelSink());
 
         messageSwitch = new ServerMessageSwitch(new TunnelCreator());
         realChannel = factory.createRealChannel(this, messageSwitch);
+        // TODO fix calling of overrideable getPipeline() from constructor
         HttpTunnelServerChannelSink sink =
                 (HttpTunnelServerChannelSink) getPipeline().getSink();
         sink.setRealChannel(realChannel);
         sink.setCloseListener(CLOSE_FUTURE_PROXY);
         config = new HttpTunnelServerChannelConfig(realChannel);
-        Channels.fireChannelOpen(this);
     }
 
     @Override
@@ -114,8 +121,8 @@ public class HttpTunnelServerChannel extends AbstractServerChannel implements
             HttpTunnelAcceptedChannelSink sink =
                     new HttpTunnelAcceptedChannelSink(messageSwitch,
                             newTunnelId, config);
-            return new HttpTunnelAcceptedChannel(HttpTunnelServerChannel.this,
-                    getFactory(), childPipeline, sink, remoteAddress, config);
+            return HttpTunnelAcceptedChannel.create(HttpTunnelServerChannel.this, getFactory(), childPipeline, sink,
+                    remoteAddress, config);
         }
 
         @Override

src/main/java/org/jboss/netty/channel/socket/http/HttpTunnelServerChannelFactory.java

@@ -42,7 +42,7 @@ public class HttpTunnelServerChannelFactory implements
 
     @Override
     public HttpTunnelServerChannel newChannel(ChannelPipeline pipeline) {
-        return new HttpTunnelServerChannel(this, pipeline);
+        return HttpTunnelServerChannel.create(this, pipeline);
     }
 
     ServerSocketChannel createRealChannel(HttpTunnelServerChannel channel,

src/main/java/org/jboss/netty/channel/socket/nio/NioAcceptedSocketChannel.java

@@ -36,7 +36,17 @@ final class NioAcceptedSocketChannel extends NioSocketChannel {
 
     final Thread bossThread;
 
-    NioAcceptedSocketChannel(
+    static NioAcceptedSocketChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, Channel parent, ChannelSink sink,
+            SocketChannel socket, NioWorker worker, Thread bossThread) {
+        NioAcceptedSocketChannel instance = new NioAcceptedSocketChannel(
+                factory, pipeline, parent, sink, socket, worker, bossThread);
+        instance.setConnected();
+        fireChannelOpen(instance);
+        return instance;
+    }
+    
+    private NioAcceptedSocketChannel(
             ChannelFactory factory, ChannelPipeline pipeline,
             Channel parent, ChannelSink sink,
             SocketChannel socket, NioWorker worker, Thread bossThread) {
@@ -44,8 +54,5 @@ final class NioAcceptedSocketChannel extends NioSocketChannel {
         super(parent, factory, pipeline, sink, socket, worker);
 
         this.bossThread = bossThread;
-
-        setConnected();
-        fireChannelOpen(this);
     }
 }

src/main/java/org/jboss/netty/channel/socket/nio/NioClientSocketChannel.java

@@ -76,11 +76,18 @@ final class NioClientSocketChannel extends NioSocketChannel {
     // Does not need to be volatile as it's accessed by only one thread.
     long connectDeadlineNanos;
 
-    NioClientSocketChannel(
+    static NioClientSocketChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink, NioWorker worker) {
+        NioClientSocketChannel instance =
+                new NioClientSocketChannel(factory, pipeline, sink, worker);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private NioClientSocketChannel(
             ChannelFactory factory, ChannelPipeline pipeline,
             ChannelSink sink, NioWorker worker) {
 
         super(null, factory, pipeline, sink, newSocket(), worker);
-        fireChannelOpen(this);
     }
 }

src/main/java/org/jboss/netty/channel/socket/nio/NioClientSocketChannelFactory.java

@@ -137,7 +137,7 @@ public class NioClientSocketChannelFactory implements ClientSocketChannelFactory
 
     @Override
     public SocketChannel newChannel(ChannelPipeline pipeline) {
-        return new NioClientSocketChannel(this, pipeline, sink, sink.nextWorker());
+        return NioClientSocketChannel.create(this, pipeline, sink, sink.nextWorker());
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/nio/NioDatagramChannel.java

@@ -119,15 +119,21 @@ class NioDatagramChannel extends AbstractChannel
     private volatile InetSocketAddress localAddress;
     volatile InetSocketAddress remoteAddress;
 
-    NioDatagramChannel(final ChannelFactory factory,
+    static NioDatagramChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink, NioDatagramWorker worker) {
+        NioDatagramChannel instance =
+                new NioDatagramChannel(factory, pipeline, sink, worker);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private NioDatagramChannel(final ChannelFactory factory,
             final ChannelPipeline pipeline, final ChannelSink sink,
             final NioDatagramWorker worker) {
         super(null, factory, pipeline, sink);
         this.worker = worker;
         datagramChannel = openNonBlockingChannel();
         config = new DefaultNioDatagramChannelConfig(datagramChannel.socket());
-
-        fireChannelOpen(this);
     }
 
     private DatagramChannel openNonBlockingChannel() {

src/main/java/org/jboss/netty/channel/socket/nio/NioDatagramChannelFactory.java

@@ -125,7 +125,7 @@ public class NioDatagramChannelFactory implements DatagramChannelFactory {
 
     @Override
     public DatagramChannel newChannel(final ChannelPipeline pipeline) {
-        return new NioDatagramChannel(this, pipeline, sink, sink.nextWorker());
+        return NioDatagramChannel.create(this, pipeline, sink, sink.nextWorker());
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/nio/NioServerSocketChannel.java

@@ -53,7 +53,15 @@ class NioServerSocketChannel extends AbstractServerChannel
     volatile Selector selector;
     private final ServerSocketChannelConfig config;
 
-    NioServerSocketChannel(
+    static NioServerSocketChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink) {
+        NioServerSocketChannel instance =
+                new NioServerSocketChannel(factory, pipeline, sink);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private NioServerSocketChannel(
             ChannelFactory factory,
             ChannelPipeline pipeline,
             ChannelSink sink) {
@@ -81,8 +89,6 @@ class NioServerSocketChannel extends AbstractServerChannel
         }
 
         config = new DefaultServerSocketChannelConfig(socket.socket());
-
-        fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/nio/NioServerSocketChannelFactory.java

@@ -140,7 +140,7 @@ public class NioServerSocketChannelFactory implements ServerSocketChannelFactory
 
     @Override
     public ServerSocketChannel newChannel(ChannelPipeline pipeline) {
-        return new NioServerSocketChannel(this, pipeline, sink);
+        return NioServerSocketChannel.create(this, pipeline, sink);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/nio/NioServerSocketPipelineSink.java

@@ -271,10 +271,8 @@ class NioServerSocketPipelineSink extends AbstractChannelSink {
                 ChannelPipeline pipeline =
                     channel.getConfig().getPipelineFactory().getPipeline();
                 NioWorker worker = nextWorker();
-                worker.register(new NioAcceptedSocketChannel(
-                        channel.getFactory(), pipeline, channel,
-                        NioServerSocketPipelineSink.this, acceptedSocket,
-                        worker, currentThread), null);
+                worker.register(NioAcceptedSocketChannel.create(channel.getFactory(), pipeline, channel,
+                        NioServerSocketPipelineSink.this, acceptedSocket, worker, currentThread), null);
             } catch (Exception e) {
                 logger.warn(
                         "Failed to initialize an accepted socket.", e);

src/main/java/org/jboss/netty/channel/socket/oio/OioAcceptedSocketChannel.java

@@ -41,7 +41,17 @@ class OioAcceptedSocketChannel extends OioSocketChannel {
     private final PushbackInputStream in;
     private final OutputStream out;
 
-    OioAcceptedSocketChannel(
+    static OioAcceptedSocketChannel create(Channel parent,
+            ChannelFactory factory, ChannelPipeline pipeline, ChannelSink sink,
+            Socket socket) {
+        OioAcceptedSocketChannel instance = new OioAcceptedSocketChannel(
+                parent, factory, pipeline, sink, socket);
+        fireChannelOpen(instance);
+        fireChannelBound(instance, instance.getLocalAddress());
+        return instance;
+    }
+    
+    private OioAcceptedSocketChannel(
             Channel parent,
             ChannelFactory factory,
             ChannelPipeline pipeline,

src/main/java/org/jboss/netty/channel/socket/oio/OioClientSocketChannel.java

@@ -38,14 +38,20 @@ class OioClientSocketChannel extends OioSocketChannel {
     volatile PushbackInputStream in;
     volatile OutputStream out;
 
-    OioClientSocketChannel(
+    static OioClientSocketChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink) {
+        OioClientSocketChannel instance =
+                new OioClientSocketChannel(factory, pipeline, sink);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private OioClientSocketChannel(
             ChannelFactory factory,
             ChannelPipeline pipeline,
             ChannelSink sink) {
 
         super(null, factory, pipeline, sink, new Socket());
-
-        fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/oio/OioClientSocketChannelFactory.java

@@ -97,7 +97,7 @@ public class OioClientSocketChannelFactory implements ClientSocketChannelFactory
 
     @Override
     public SocketChannel newChannel(ChannelPipeline pipeline) {
-        return new OioClientSocketChannel(this, pipeline, sink);
+        return OioClientSocketChannel.create(this, pipeline, sink);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/oio/OioDatagramChannel.java

@@ -53,7 +53,15 @@ final class OioDatagramChannel extends AbstractChannel
     private volatile InetSocketAddress localAddress;
     volatile InetSocketAddress remoteAddress;
 
-    OioDatagramChannel(
+    static OioDatagramChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink) {
+        OioDatagramChannel instance =
+                new OioDatagramChannel(factory, pipeline, sink);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private OioDatagramChannel(
             ChannelFactory factory,
             ChannelPipeline pipeline,
             ChannelSink sink) {
@@ -74,8 +82,6 @@ final class OioDatagramChannel extends AbstractChannel
                     "Failed to configure the datagram socket timeout.", e);
         }
         config = new DefaultDatagramChannelConfig(socket);
-
-        fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/oio/OioDatagramChannelFactory.java

@@ -96,7 +96,7 @@ public class OioDatagramChannelFactory implements DatagramChannelFactory {
 
     @Override
     public DatagramChannel newChannel(ChannelPipeline pipeline) {
-        return new OioDatagramChannel(this, pipeline, sink);
+        return OioDatagramChannel.create(this, pipeline, sink);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/oio/OioServerSocketChannel.java

@@ -52,7 +52,15 @@ class OioServerSocketChannel extends AbstractServerChannel
     final Lock shutdownLock = new ReentrantLock();
     private final ServerSocketChannelConfig config;
 
-    OioServerSocketChannel(
+    static OioServerSocketChannel create(ChannelFactory factory,
+            ChannelPipeline pipeline, ChannelSink sink) {
+        OioServerSocketChannel instance =
+                new OioServerSocketChannel(factory, pipeline, sink);
+        fireChannelOpen(instance);
+        return instance;
+    }
+
+    private OioServerSocketChannel(
             ChannelFactory factory,
             ChannelPipeline pipeline,
             ChannelSink sink) {
@@ -80,8 +88,6 @@ class OioServerSocketChannel extends AbstractServerChannel
         }
 
         config = new DefaultServerSocketChannelConfig(socket);
-
-        fireChannelOpen(this);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/oio/OioServerSocketChannelFactory.java

@@ -117,7 +117,7 @@ public class OioServerSocketChannelFactory implements ServerSocketChannelFactory
 
     @Override
     public ServerSocketChannel newChannel(ChannelPipeline pipeline) {
-        return new OioServerSocketChannel(this, pipeline, sink);
+        return OioServerSocketChannel.create(this, pipeline, sink);
     }
 
     @Override

src/main/java/org/jboss/netty/channel/socket/oio/OioServerSocketPipelineSink.java

@@ -205,12 +205,8 @@ class OioServerSocketPipelineSink extends AbstractChannelSink {
                             ChannelPipeline pipeline =
                                 channel.getConfig().getPipelineFactory().getPipeline();
                             final OioAcceptedSocketChannel acceptedChannel =
-                                new OioAcceptedSocketChannel(
-                                        channel,
-                                        channel.getFactory(),
-                                        pipeline,
-                                        OioServerSocketPipelineSink.this,
-                                        acceptedSocket);
+                                OioAcceptedSocketChannel.create(channel, channel.getFactory(),
+                                    pipeline, OioServerSocketPipelineSink.this, acceptedSocket);
                             DeadLockProofWorker.start(
                                     workerExecutor,
                                     new OioWorker(acceptedChannel));