From 5644e4fbfd777921b33874aed13c45d544c8a383 Mon Sep 17 00:00:00 2001
From: "Carl C. Trieloff" <cctrieloff@apache.org>
Date: Fri, 17 Oct 2008 01:27:45 +0000
Subject: Feature requested by AndrewM for M4...     - provide initial value
 support, for late joining consumers

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@705443 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/broker/Exchange.cpp | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

(limited to 'cpp/src/qpid/broker/Exchange.cpp')

diff --git a/cpp/src/qpid/broker/Exchange.cpp b/cpp/src/qpid/broker/Exchange.cpp
index a3130d9edb..3cea904676 100644
--- a/cpp/src/qpid/broker/Exchange.cpp
+++ b/cpp/src/qpid/broker/Exchange.cpp
@@ -24,6 +24,7 @@
 #include "qpid/agent/ManagementAgent.h"
 #include "qpid/log/Statement.h"
 #include "qpid/framing/MessageProperties.h"
+#include "DeliverableMessage.h"
 
 using namespace qpid::broker;
 using namespace qpid::framing;
@@ -38,26 +39,41 @@ namespace _qmf = qmf::org::apache::qpid::broker;
 namespace 
 {
 const std::string qpidMsgSequence("qpid.msg_sequence");
+const std::string qpidIVE("qpid.ive");
 }
 
 
 Exchange::PreRoute::PreRoute(Deliverable& msg, Exchange* _p):parent(_p) {
-    if (parent && parent->sequence){
-        parent->sequenceLock.lock();
-        parent->sequenceNo++;
-        msg.getMessage().getProperties<MessageProperties>()->getApplicationHeaders().setInt64(qpidMsgSequence,parent->sequenceNo); 
+    if (parent){
+        if (parent->sequence || parent->ive) parent->sequenceLock.lock();
+        
+        if (parent->sequence){
+            parent->sequenceNo++;
+            msg.getMessage().getProperties<MessageProperties>()->getApplicationHeaders().setInt64(qpidMsgSequence,parent->sequenceNo); 
+        } 
+        if (parent->ive) {
+            parent->lastMsg =  &( msg.getMessage());
+        }
     }
 }
 
 Exchange::PreRoute::~PreRoute(){
-    if (parent && parent->sequence){
+    if (parent && (parent->sequence || parent->ive)){
         parent->sequenceLock.unlock();
     }
 }
 
+void Exchange::routeIVE(){
+    if (ive && lastMsg.get()){
+        DeliverableMessage dmsg(lastMsg);
+        route(dmsg, lastMsg->getRoutingKey(), lastMsg->getApplicationHeaders());
+    }
+}
+
+
 Exchange::Exchange (const string& _name, Manageable* parent) :
     name(_name), durable(false), persistenceId(0), sequence(false), 
-	sequenceNo(0), mgmtExchange(0)
+	sequenceNo(0), ive(false), mgmtExchange(0)
 {
     if (parent != 0)
     {
@@ -73,7 +89,7 @@ Exchange::Exchange (const string& _name, Manageable* parent) :
 Exchange::Exchange(const string& _name, bool _durable, const qpid::framing::FieldTable& _args,
                    Manageable* parent)
     : name(_name), durable(_durable), args(_args), alternateUsers(0), persistenceId(0), 
-	sequence(false), sequenceNo(0), mgmtExchange(0)
+	sequence(false), sequenceNo(0), ive(false), mgmtExchange(0)
 {
     if (parent != 0)
     {
@@ -95,6 +111,8 @@ Exchange::Exchange(const string& _name, bool _durable, const qpid::framing::Fiel
     sequence = _args.get(qpidMsgSequence);
     if (sequence) QPID_LOG(debug, "Configured exchange "+ _name +" with Msg sequencing");
 
+    ive = _args.get(qpidIVE);
+    if (ive) QPID_LOG(debug, "Configured exchange "+ _name +" with Initial Value");
 }
 
 Exchange::~Exchange ()
-- 
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