From 56e72efee5eeefa3d73df1f9fbd77058d017a8ee Mon Sep 17 00:00:00 2001
From: Robert Godfrey <rgodfrey@apache.org>
Date: Wed, 16 Apr 2008 09:40:42 +0000
Subject: QPID-926 : Perform all store operations associated with an
 acknowledge in a single store transaction

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/branches/M2.1@648648 13f79535-47bb-0310-9956-ffa450edef68
---
 .../qpid/server/txn/NonTransactionalContext.java   | 73 ++++++++++++----------
 1 file changed, 39 insertions(+), 34 deletions(-)

(limited to 'java')

diff --git a/java/broker/src/main/java/org/apache/qpid/server/txn/NonTransactionalContext.java b/java/broker/src/main/java/org/apache/qpid/server/txn/NonTransactionalContext.java
index 1e4b69c935..cac3489f4c 100644
--- a/java/broker/src/main/java/org/apache/qpid/server/txn/NonTransactionalContext.java
+++ b/java/broker/src/main/java/org/apache/qpid/server/txn/NonTransactionalContext.java
@@ -49,8 +49,6 @@ public class NonTransactionalContext implements TransactionalContext
     /** Where to put undeliverable messages */
     private final List<RequiredDeliveryException> _returnMessages;
 
-    private final Set<Long> _browsedAcks;
-
     private final MessageStore _messageStore;
 
     private final StoreContext _storeContext;
@@ -60,12 +58,18 @@ public class NonTransactionalContext implements TransactionalContext
 
     public NonTransactionalContext(MessageStore messageStore, StoreContext storeContext, AMQChannel channel,
                                    List<RequiredDeliveryException> returnMessages, Set<Long> browsedAcks)
+    {
+        this(messageStore,storeContext,channel,returnMessages);
+    }
+
+    public NonTransactionalContext(MessageStore messageStore, StoreContext storeContext, AMQChannel channel,
+                                   List<RequiredDeliveryException> returnMessages)
     {
         _channel = channel;
         _storeContext = storeContext;
         _returnMessages = returnMessages;
         _messageStore = messageStore;
-        _browsedAcks = browsedAcks;
+
     }
 
 
@@ -112,6 +116,9 @@ public class NonTransactionalContext implements TransactionalContext
                                    boolean multiple, final UnacknowledgedMessageMap unacknowledgedMessageMap)
             throws AMQException
     {
+
+        final boolean debug = _log.isDebugEnabled();
+
         if (multiple)
         {
             if (deliveryTag == 0)
@@ -125,20 +132,17 @@ public class NonTransactionalContext implements TransactionalContext
                 {
                     public boolean callback(UnacknowledgedMessage message) throws AMQException
                     {
-                        if (!_browsedAcks.contains(deliveryTag))
+                        if (debug)
                         {
-                            if (_log.isDebugEnabled())
-                            {
-                                _log.debug("Discarding message: " + message.getMessage().getMessageId());
-                            }
-
-                            //Message has been ack so discard it. This will dequeue and decrement the reference.
-                            message.discard(_storeContext);
+                            _log.debug("Discarding message: " + message.getMessage().getMessageId());
                         }
-                        else
+                        if(message.getMessage().isPersistent())
                         {
-                            _browsedAcks.remove(deliveryTag);
+                            beginTranIfNecessary();
                         }
+                        //Message has been ack so discard it. This will dequeue and decrement the reference.
+                        message.discard(_storeContext);
+
                         return false;
                     }
 
@@ -159,20 +163,17 @@ public class NonTransactionalContext implements TransactionalContext
                 unacknowledgedMessageMap.drainTo(acked, deliveryTag);
                 for (UnacknowledgedMessage msg : acked)
                 {
-                    if (!_browsedAcks.contains(deliveryTag))
+                    if (debug)
                     {
-                        if (_log.isDebugEnabled())
-                        {
-                            _log.debug("Discarding message: " + msg.getMessage().getMessageId());
-                        }
-
-                        //Message has been ack so discard it. This will dequeue and decrement the reference.
-                        msg.discard(_storeContext);
+                        _log.debug("Discarding message: " + msg.getMessage().getMessageId());
                     }
-                    else
+                    if(msg.getMessage().isPersistent())
                     {
-                        _browsedAcks.remove(deliveryTag);
+                        beginTranIfNecessary();
                     }
+
+                    //Message has been ack so discard it. This will dequeue and decrement the reference.
+                    msg.discard(_storeContext);
                 }
             }
         }
@@ -189,27 +190,31 @@ public class NonTransactionalContext implements TransactionalContext
                                        _channel.getChannelId());
             }
 
-            if (!_browsedAcks.contains(deliveryTag))
+            if (debug)
             {
-                if (_log.isDebugEnabled())
-                {
-                    _log.debug("Discarding message: " + msg.getMessage().getMessageId());
-                }
-
-                //Message has been ack so discard it. This will dequeue and decrement the reference.
-                msg.discard(_storeContext);
+                _log.debug("Discarding message: " + msg.getMessage().getMessageId());
             }
-            else
+            if(msg.getMessage().isPersistent())
             {
-                _browsedAcks.remove(deliveryTag);
+                beginTranIfNecessary();
             }
 
-            if (_log.isDebugEnabled())
+            //Message has been ack so discard it. This will dequeue and decrement the reference.
+            msg.discard(_storeContext);
+
+            if (debug)
             {
                 _log.debug("Received non-multiple ack for messaging with delivery tag " + deliveryTag + " msg id " +
                            msg.getMessage().getMessageId());
             }
         }
+
+        if(_inTran)
+        {
+            _messageStore.commitTran(_storeContext);
+            _inTran = false;
+        }
+
     }
 
     public void messageFullyReceived(boolean persistent) throws AMQException
-- 
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