From 92b8daec32ca76cbfdd02558e45d41ff7373f6ef Mon Sep 17 00:00:00 2001
From: Alan Conway <aconway@apache.org>
Date: Thu, 16 Oct 2008 18:45:56 +0000
Subject: Add UUID generated for each new cluster instance.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@705322 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/cluster/Cluster.cpp           | 17 ++++++---
 cpp/src/qpid/cluster/Cluster.h             | 11 +++++-
 cpp/src/qpid/cluster/management-schema.xml | 59 +++++++++++++++---------------
 3 files changed, 51 insertions(+), 36 deletions(-)

(limited to 'cpp/src')

diff --git a/cpp/src/qpid/cluster/Cluster.cpp b/cpp/src/qpid/cluster/Cluster.cpp
index a0bcb9ae02..70c73191ee 100644
--- a/cpp/src/qpid/cluster/Cluster.cpp
+++ b/cpp/src/qpid/cluster/Cluster.cpp
@@ -78,7 +78,7 @@ struct ClusterDispatcher : public framing::AMQP_AllOperations::ClusterHandler {
     void dumpRequest(const std::string& url) { cluster.dumpRequest(member, url, l); }
     void ready(const std::string& url) { cluster.ready(member, url, l); }
     void configChange(const std::string& addresses) { cluster.configChange(member, addresses, l); }
-    void dumpOffer(uint64_t dumpee) { cluster.dumpOffer(member, dumpee, l); }
+    void dumpOffer(uint64_t dumpee, const Uuid& id) { cluster.dumpOffer(member, dumpee, id, l); }
     void dumpStart(uint64_t dumpee, const std::string& url) { cluster.dumpStart(member, dumpee, url, l); }
     void shutdown() { cluster.shutdown(member, l); }
 
@@ -110,8 +110,6 @@ Cluster::Cluster(const std::string& name_, const Url& url_, broker::Broker& b) :
         mgmtObject = new qmf::Cluster (agent, this, &broker,name.str(),myUrl.str());
         agent->addObject (mgmtObject);
         mgmtObject->set_status("JOINING");
-        // FIXME aconway 2008-09-24: 
-        // if first cluster up set new UUID to set_clusterID() else set UUID of cluster being joined.
     }
     broker.getKnownBrokers = boost::bind(&Cluster::getUrls, this);
     failoverExchange.reset(new FailoverExchange(this));
@@ -372,6 +370,7 @@ void Cluster::configChange(const MemberId&, const std::string& addresses, Lock&
 
     if (state == INIT) {        // First configChange
         if (map.aliveCount() == 1) {
+            setClusterId(true);
             QPID_LOG(info, *this << " first in cluster at " << myUrl);
             state = READY;
             if (mgmtObject!=0) mgmtObject->set_status("ACTIVE");
@@ -395,7 +394,7 @@ void Cluster::tryMakeOffer(const MemberId& id, Lock& l) {
     if (state == READY && map.isNewbie(id)) {
         state = OFFER;
         QPID_LOG(debug, *this << " send dump-offer to " << id);
-        mcastControl(ClusterDumpOfferBody(ProtocolVersion(), id), l);
+        mcastControl(ClusterDumpOfferBody(ProtocolVersion(), id, clusterId), l);
     }
 }
 
@@ -432,7 +431,7 @@ void Cluster::ready(const MemberId& id, const std::string& url, Lock& l) {
     }
 }
 
-void Cluster::dumpOffer(const MemberId& dumper, uint64_t dumpeeInt, Lock& l) {
+void Cluster::dumpOffer(const MemberId& dumper, uint64_t dumpeeInt, const Uuid& uuid, Lock& l) {
     if (state == LEFT) return;
     MemberId dumpee(dumpeeInt);
     boost::optional<Url> url = map.dumpOffer(dumper, dumpee);
@@ -450,6 +449,7 @@ void Cluster::dumpOffer(const MemberId& dumper, uint64_t dumpeeInt, Lock& l) {
     else if (dumpee == myId && url) {
         assert(state == NEWBIE);
         QPID_LOG(debug, *this << " accepted dump-offer from " << dumper);
+        setClusterId(uuid);
         state = DUMPEE;
         deliverQueue.stop();
         checkDumpIn(l);
@@ -580,4 +580,11 @@ broker::Broker& Cluster::getBroker() const {
     return broker; // Immutable,  no need to lock.
 }
 
+void Cluster::setClusterId(const Uuid& uuid) {
+    clusterId = uuid;
+    if (mgmtObject)
+        mgmtObject->set_clusterID(clusterId.str());
+    QPID_LOG(debug, *this << " cluster-id = " << clusterId);
+}
+
 }} // namespace qpid::cluster
diff --git a/cpp/src/qpid/cluster/Cluster.h b/cpp/src/qpid/cluster/Cluster.h
index 8ee55e68f8..d8b9c958d8 100644
--- a/cpp/src/qpid/cluster/Cluster.h
+++ b/cpp/src/qpid/cluster/Cluster.h
@@ -42,6 +42,12 @@
 #include <map>
 
 namespace qpid {
+
+namespace framing {
+class AMQBody;
+class Uuid;
+}
+
 namespace cluster {
 
 class Connection;
@@ -118,7 +124,7 @@ class Cluster : private Cpg::Handler, public management::Manageable {
     // May be called in CPG thread via deliver() OR in deliverQueue thread.
     // 
     void dumpRequest(const MemberId&, const std::string&, Lock&);
-    void dumpOffer(const MemberId& dumper, uint64_t dumpee, Lock&);
+    void dumpOffer(const MemberId& dumper, uint64_t dumpee, const framing::Uuid&, Lock&);
     void dumpStart(const MemberId& dumper, uint64_t dumpeeInt, const std::string& urlStr, Lock&);
     void ready(const MemberId&, const std::string&, Lock&);
     void configChange(const MemberId&, const std::string& addresses, Lock& l);
@@ -166,6 +172,8 @@ class Cluster : private Cpg::Handler, public management::Manageable {
     void dumpOutError(const std::exception&);
     void dumpOutDone(Lock&);
 
+    void setClusterId(const framing::Uuid&);
+    
     mutable sys::Monitor lock;
 
     broker::Broker& broker;
@@ -181,6 +189,7 @@ class Cluster : private Cpg::Handler, public management::Manageable {
     PollableEventQueue deliverQueue;
     PlainEventQueue mcastQueue;
     uint32_t mcastId;
+    framing::Uuid clusterId;
 
     qmf::org::apache::qpid::cluster::Cluster* mgmtObject; // mgnt owns lifecycle
 
diff --git a/cpp/src/qpid/cluster/management-schema.xml b/cpp/src/qpid/cluster/management-schema.xml
index 0f30814367..4c25ddf636 100644
--- a/cpp/src/qpid/cluster/management-schema.xml
+++ b/cpp/src/qpid/cluster/management-schema.xml
@@ -1,39 +1,39 @@
 <schema package="org.apache.qpid.cluster">
 
-<!--
-  Licensed to the Apache Software Foundation (ASF) under one
-  or more contributor license agreements.  See the NOTICE file
-  distributed with this work for additional information
-  regarding copyright ownership.  The ASF licenses this file
-  to you under the Apache License, Version 2.0 (the
-  "License"); you may not use this file except in compliance
-  with the License.  You may obtain a copy of the License at
-  
-    http://www.apache.org/licenses/LICENSE-2.0
-  
-  Unless required by applicable law or agreed to in writing,
-  software distributed under the License is distributed on an
-  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-  KIND, either express or implied.  See the License for the
-  specific language governing permissions and limitations
-  under the License.
--->
+  <!--
+      Licensed to the Apache Software Foundation (ASF) under one
+      or more contributor license agreements.  See the NOTICE file
+      distributed with this work for additional information
+      regarding copyright ownership.  The ASF licenses this file
+      to you under the Apache License, Version 2.0 (the
+      "License"); you may not use this file except in compliance
+      with the License.  You may obtain a copy of the License at
+      
+      http://www.apache.org/licenses/LICENSE-2.0
+      
+      Unless required by applicable law or agreed to in writing,
+      software distributed under the License is distributed on an
+      "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+      KIND, either express or implied.  See the License for the
+      specific language governing permissions and limitations
+      under the License.
+  -->
 
   <!-- Type information:
 
-       Numeric types with "_wm" suffix are watermarked numbers.  These are compound
-       values containing a current value, and a low and high water mark for the reporting
-       interval.  The low and high water marks are set to the current value at the
-       beginning of each interval and track the minimum and maximum values of the statistic
-       over the interval respectively.
+Numeric types with "_wm" suffix are watermarked numbers.  These are compound
+values containing a current value, and a low and high water mark for the reporting
+interval.  The low and high water marks are set to the current value at the
+beginning of each interval and track the minimum and maximum values of the statistic
+over the interval respectively.
 
-       Access rights for configuration elements:
+Access rights for configuration elements:
 
-           RO => Read Only
-           RC => Read/Create, can be set at create time only, read-only thereafter
-           RW => Read/Write
+RO => Read Only
+RC => Read/Create, can be set at create time only, read-only thereafter
+RW => Read/Write
 
-           If access rights are omitted for a property, they are assumed to be RO.
+If access rights are omitted for a property, they are assumed to be RO.
 
   -->
 
@@ -44,8 +44,7 @@
     <property name="publishedURL"     type="sstr"   access="RC" desc="URL this node advertizes itself as"/>
     <property name="clusterSize"      type="uint16" access="RO" desc="Number of brokers currently in the cluster"/>
     <property name="status"           type="sstr"   access="RO" desc="Cluster node status (STALLED,ACTIVE,JOINING)"/>
-	<property name="members"          type="lstr"    access="RO" desc="List of 'host:port' of member nodes in the cluster delimited by ';'"/>
-	
+    <property name="members"          type="lstr"    access="RO" desc="List of member URLs delimited by ';'"/> 
 
     <method name="stopClusterNode"/>
     <method name="stopFullCluster"/>
-- 
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