From 6bc2dfcb32f4b6af4c24a51a664c4ab838d8a3fa Mon Sep 17 00:00:00 2001
From: Ted Ross <tross@apache.org>
Date: Tue, 12 Jul 2011 11:49:32 +0000
Subject: QPID-3275 - QMF Console asynchronous correlation-id should be scoped
 to the session, not the specific agent

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1145557 13f79535-47bb-0310-9956-ffa450edef68
---
 qpid/cpp/src/qmf/Agent.cpp            | 29 ++++++-----------------------
 qpid/cpp/src/qmf/AgentImpl.h          |  1 -
 qpid/cpp/src/qmf/ConsoleSession.cpp   |  2 +-
 qpid/cpp/src/qmf/ConsoleSessionImpl.h |  3 +++
 4 files changed, 10 insertions(+), 25 deletions(-)

(limited to 'qpid/cpp/src')

diff --git a/qpid/cpp/src/qmf/Agent.cpp b/qpid/cpp/src/qmf/Agent.cpp
index 915f2a1c88..684f8e4fba 100644
--- a/qpid/cpp/src/qmf/Agent.cpp
+++ b/qpid/cpp/src/qmf/Agent.cpp
@@ -72,7 +72,7 @@ Schema Agent::getSchema(const SchemaId& s, Duration t) { return impl->getSchema(
 
 AgentImpl::AgentImpl(const std::string& n, uint32_t e, ConsoleSessionImpl& s) :
     name(n), directSubject(n), epoch(e), session(s), touched(true), untouchedCount(0), capability(0),
-    sender(session.directSender), nextCorrelator(1), schemaCache(s.schemaCache)
+    sender(session.directSender), schemaCache(s.schemaCache)
 {
 }
 
@@ -102,12 +102,11 @@ const Variant& AgentImpl::getAttribute(const string& k) const
 ConsoleEvent AgentImpl::query(const Query& query, Duration timeout)
 {
     boost::shared_ptr<SyncContext> context(new SyncContext());
-    uint32_t correlator;
+    uint32_t correlator(session.correlator());
     ConsoleEvent result;
 
     {
         qpid::sys::Mutex::ScopedLock l(lock);
-        correlator = nextCorrelator++;
         contextMap[correlator] = context;
     }
     try {
@@ -151,12 +150,7 @@ ConsoleEvent AgentImpl::query(const string& text, Duration timeout)
 
 uint32_t AgentImpl::queryAsync(const Query& query)
 {
-    uint32_t correlator;
-
-    {
-        qpid::sys::Mutex::ScopedLock l(lock);
-        correlator = nextCorrelator++;
-    }
+    uint32_t correlator(session.correlator());
 
     sendQuery(query, correlator);
     return correlator;
@@ -172,12 +166,11 @@ uint32_t AgentImpl::queryAsync(const string& text)
 ConsoleEvent AgentImpl::callMethod(const string& method, const Variant::Map& args, const DataAddr& addr, Duration timeout)
 {
     boost::shared_ptr<SyncContext> context(new SyncContext());
-    uint32_t correlator;
+    uint32_t correlator(session.correlator());
     ConsoleEvent result;
 
     {
         qpid::sys::Mutex::ScopedLock l(lock);
-        correlator = nextCorrelator++;
         contextMap[correlator] = context;
     }
     try {
@@ -213,12 +206,7 @@ ConsoleEvent AgentImpl::callMethod(const string& method, const Variant::Map& arg
 
 uint32_t AgentImpl::callMethodAsync(const string& method, const Variant::Map& args, const DataAddr& addr)
 {
-    uint32_t correlator;
-
-    {
-        qpid::sys::Mutex::ScopedLock l(lock);
-        correlator = nextCorrelator++;
-    }
+    uint32_t correlator(session.correlator());
 
     sendMethod(method, args, addr, correlator);
     return correlator;
@@ -596,12 +584,7 @@ void AgentImpl::sendMethod(const string& method, const Variant::Map& args, const
 
 void AgentImpl::sendSchemaRequest(const SchemaId& id)
 {
-    uint32_t correlator;
-
-    {
-        qpid::sys::Mutex::ScopedLock l(lock);
-        correlator = nextCorrelator++;
-    }
+    uint32_t correlator(session.correlator());
 
     if (capability >= AGENT_CAPABILITY_V2_SCHEMA) {
         Query query(QUERY_SCHEMA, id);
diff --git a/qpid/cpp/src/qmf/AgentImpl.h b/qpid/cpp/src/qmf/AgentImpl.h
index 7fa4f4373a..09754a3a7e 100644
--- a/qpid/cpp/src/qmf/AgentImpl.h
+++ b/qpid/cpp/src/qmf/AgentImpl.h
@@ -99,7 +99,6 @@ namespace qmf {
         uint32_t capability;
         qpid::messaging::Sender sender;
         qpid::types::Variant::Map attributes;
-        uint32_t nextCorrelator;
         std::map<uint32_t, boost::shared_ptr<SyncContext> > contextMap;
         boost::shared_ptr<SchemaCache> schemaCache;
         mutable std::set<std::string> packageSet;
diff --git a/qpid/cpp/src/qmf/ConsoleSession.cpp b/qpid/cpp/src/qmf/ConsoleSession.cpp
index 5df0d83f12..7b51d80032 100644
--- a/qpid/cpp/src/qmf/ConsoleSession.cpp
+++ b/qpid/cpp/src/qmf/ConsoleSession.cpp
@@ -68,7 +68,7 @@ Subscription ConsoleSession::subscribe(const string& q, const string& f, const s
 ConsoleSessionImpl::ConsoleSessionImpl(Connection& c, const string& options) :
     connection(c), domain("default"), maxAgentAgeMinutes(5), listenOnDirect(true), strictSecurity(false),
     opened(false), thread(0), threadCanceled(false), lastVisit(0), lastAgePass(0),
-    connectedBrokerInAgentList(false), schemaCache(new SchemaCache())
+    connectedBrokerInAgentList(false), schemaCache(new SchemaCache()), nextCorrelator(1)
 {
     if (!options.empty()) {
         qpid::messaging::AddressParser parser(options);
diff --git a/qpid/cpp/src/qmf/ConsoleSessionImpl.h b/qpid/cpp/src/qmf/ConsoleSessionImpl.h
index 411b3f016a..429dfc4881 100644
--- a/qpid/cpp/src/qmf/ConsoleSessionImpl.h
+++ b/qpid/cpp/src/qmf/ConsoleSessionImpl.h
@@ -90,6 +90,8 @@ namespace qmf {
         std::string directBase;
         std::string topicBase;
         boost::shared_ptr<SchemaCache> schemaCache;
+        qpid::sys::Mutex corrlock;
+        uint32_t nextCorrelator;
 
         void enqueueEvent(const ConsoleEvent&);
         void enqueueEventLH(const ConsoleEvent&);
@@ -100,6 +102,7 @@ namespace qmf {
         void handleV1SchemaResponse(qpid::management::Buffer&, uint32_t, const qpid::messaging::Message&);
         void periodicProcessing(uint64_t);
         void run();
+        uint32_t correlator() { qpid::sys::Mutex::ScopedLock l(corrlock); return nextCorrelator++; }
 
         friend class AgentImpl;
     };
-- 
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