From 810ed92086d1a45253ae68cf638bc9467ace918d Mon Sep 17 00:00:00 2001
From: Keith Wall <kwall@apache.org>
Date: Thu, 13 Sep 2012 20:23:21 +0000
Subject: QPID-4302: 0-8..0-9-1 client should sync after message.acknowledge()

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1384512 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/qpid/client/AMQSession_0_8.java     | 23 ++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

(limited to 'qpid/java/client/src/main')

diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_8.java b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_8.java
index ade7ab8033..ccae5e31e5 100644
--- a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_8.java
+++ b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_8.java
@@ -64,6 +64,11 @@ public class AMQSession_0_8 extends AMQSession<BasicMessageConsumer_0_8, BasicMe
     /** Used for debugging. */
     private static final Logger _logger = LoggerFactory.getLogger(AMQSession.class);
 
+    public static final String QPID_SYNC_AFTER_CLIENT_ACK = "qpid.sync_after_client.ack";
+
+    private final boolean _syncAfterClientAck =
+            Boolean.parseBoolean(System.getProperty(QPID_SYNC_AFTER_CLIENT_ACK, "true"));
+
     /**
      * The period to wait while flow controlled before sending a log message confirming that the session is still
      * waiting on flow control being revoked
@@ -120,8 +125,9 @@ public class AMQSession_0_8 extends AMQSession<BasicMessageConsumer_0_8, BasicMe
         return getProtocolHandler().getProtocolVersion();
     }
 
-    protected void acknowledgeImpl()
+    protected void acknowledgeImpl() throws JMSException
     {
+        boolean syncRequired = false;
         while (true)
         {
             Long tag = getUnacknowledgedMessageTags().poll();
@@ -131,6 +137,19 @@ public class AMQSession_0_8 extends AMQSession<BasicMessageConsumer_0_8, BasicMe
             }
 
             acknowledgeMessage(tag, false);
+            syncRequired = true;
+        }
+
+        try
+        {
+            if (syncRequired && _syncAfterClientAck)
+            {
+                sync();
+            }
+        }
+        catch (AMQException a)
+        {
+            throw new JMSAMQException("Failed to sync after acknowledge", a);
         }
     }
 
@@ -681,7 +700,7 @@ public class AMQSession_0_8 extends AMQSession<BasicMessageConsumer_0_8, BasicMe
                                               boolean noLocal,
                                               boolean noWait) throws AMQException
     {
-        throw new UnsupportedOperationException("The new addressing based sytanx is "
+        throw new UnsupportedOperationException("The new addressing based syntax is "
                 + "not supported for AMQP 0-8/0-9 versions");
     }
     
-- 
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