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From tomwh...@apache.org
Subject svn commit: r1383359 - in /avro/trunk: CHANGES.txt lang/java/ipc/src/main/java/org/apache/avro/ipc/NettyServer.java lang/java/ipc/src/test/java/org/apache/avro/ipc/TestNettyServer.java
Date Tue, 11 Sep 2012 11:31:58 GMT
Author: tomwhite
Date: Tue Sep 11 11:31:57 2012
New Revision: 1383359

URL: http://svn.apache.org/viewvc?rev=1383359&view=rev
Log:
AVRO-1151. Netty Avro server should expose the number of connections currently open. Contributed
by Hari Shreedharan.

Modified:
    avro/trunk/CHANGES.txt
    avro/trunk/lang/java/ipc/src/main/java/org/apache/avro/ipc/NettyServer.java
    avro/trunk/lang/java/ipc/src/test/java/org/apache/avro/ipc/TestNettyServer.java

Modified: avro/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/avro/trunk/CHANGES.txt?rev=1383359&r1=1383358&r2=1383359&view=diff
==============================================================================
--- avro/trunk/CHANGES.txt (original)
+++ avro/trunk/CHANGES.txt Tue Sep 11 11:31:57 2012
@@ -13,6 +13,9 @@ Avro 1.7.2 (unreleased)
     AVRO-1147. Java: Permit stringable map keys in reflect.
     (Alexandre Normand)
 
+    AVRO-1151. Netty Avro server should expose the number of connections
+    currently open. (Hari Shreedharan via tomwhite)
+
   BUG FIXES
 
     AVRO-1128. Java: Fix SpecificRecordBase#equals() to work for

Modified: avro/trunk/lang/java/ipc/src/main/java/org/apache/avro/ipc/NettyServer.java
URL: http://svn.apache.org/viewvc/avro/trunk/lang/java/ipc/src/main/java/org/apache/avro/ipc/NettyServer.java?rev=1383359&r1=1383358&r2=1383359&view=diff
==============================================================================
--- avro/trunk/lang/java/ipc/src/main/java/org/apache/avro/ipc/NettyServer.java (original)
+++ avro/trunk/lang/java/ipc/src/main/java/org/apache/avro/ipc/NettyServer.java Tue Sep 11
11:31:57 2012
@@ -146,6 +146,16 @@ public class NettyServer implements Serv
   public void join() throws InterruptedException {
     closed.await();
   }
+  
+  /**
+   *
+   * @return The number of clients currently connected to this server.
+   */
+  public int getNumActiveConnections() {
+    //allChannels also contains the server channel, so exclude that from the
+    //count.
+    return allChannels.size() - 1;
+  }
 
   /**
    * Avro server handler for the Netty transport 
@@ -190,8 +200,18 @@ public class NettyServer implements Serv
     public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
       LOG.warn("Unexpected exception from downstream.", e.getCause());
       e.getChannel().close();
+      allChannels.remove(e.getChannel());
     }
 
-  }
+    @Override
+    public void channelClosed(
+            ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
+      LOG.info("Connection to {} disconnected.",
+              e.getChannel().getRemoteAddress());
+      super.channelClosed(ctx, e);
+      e.getChannel().close();
+      allChannels.remove(e.getChannel());
+    }
 
+  }
 }

Modified: avro/trunk/lang/java/ipc/src/test/java/org/apache/avro/ipc/TestNettyServer.java
URL: http://svn.apache.org/viewvc/avro/trunk/lang/java/ipc/src/test/java/org/apache/avro/ipc/TestNettyServer.java?rev=1383359&r1=1383358&r2=1383359&view=diff
==============================================================================
--- avro/trunk/lang/java/ipc/src/test/java/org/apache/avro/ipc/TestNettyServer.java (original)
+++ avro/trunk/lang/java/ipc/src/test/java/org/apache/avro/ipc/TestNettyServer.java Tue Sep
11 11:31:57 2012
@@ -127,6 +127,18 @@ public class TestNettyServer {
 
   }
 
+  @Test
+  public void testConnectionsCount() throws Exception {
+    Transceiver transceiver2 = new NettyTransceiver(new InetSocketAddress(
+            server.getPort()), CONNECT_TIMEOUT_MILLIS);
+    Mail proxy2 = SpecificRequestor.getClient(Mail.class, transceiver2);
+    proxy.fireandforget(createMessage());
+    proxy2.fireandforget(createMessage());
+    Assert.assertEquals(2, ((NettyServer) server).getNumActiveConnections());
+    transceiver2.close();
+    Assert.assertEquals(1, ((NettyServer) server).getNumActiveConnections());
+  }
+
   private Message createMessage() {
     Message msg = Message.newBuilder().
       setTo("wife").



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