Cluster sets recovery flag on Broker for first member in cluster.

Disable recovery from local store if the recovery flag is not set.


git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@740793 13f79535-47bb-0310-9956-ffa450edef68

3 files changed, 52 insertions, 28 deletions

diff --git a/cpp/src/qpid/cluster/Cluster.cpp b/cpp/src/qpid/cluster/Cluster.cpp
index eaa4a720b1..41688b5c49 100644
--- a/cpp/src/qpid/cluster/Cluster.cpp
+++ b/cpp/src/qpid/cluster/Cluster.cpp
@@ -21,28 +21,30 @@
 #include "UpdateClient.h"
 #include "FailoverExchange.h"
 
+#include "qmf/org/apache/qpid/cluster/ArgsClusterStopClusterNode.h"
+#include "qmf/org/apache/qpid/cluster/Package.h"
 #include "qpid/broker/Broker.h"
-#include "qpid/broker/SessionState.h"
 #include "qpid/broker/Connection.h"
 #include "qpid/broker/QueueRegistry.h"
+#include "qpid/broker/SessionState.h"
 #include "qpid/framing/AMQFrame.h"
 #include "qpid/framing/AMQP_AllOperations.h"
 #include "qpid/framing/AllInvoker.h"
-#include "qpid/framing/ClusterUpdateRequestBody.h"
-#include "qpid/framing/ClusterReadyBody.h"
 #include "qpid/framing/ClusterConfigChangeBody.h"
-#include "qpid/framing/ClusterUpdateOfferBody.h"
-#include "qpid/framing/ClusterShutdownBody.h"
 #include "qpid/framing/ClusterConnectionDeliverCloseBody.h"
 #include "qpid/framing/ClusterConnectionDeliverDoOutputBody.h"
-#include "qpid/log/Statement.h"
+#include "qpid/framing/ClusterReadyBody.h"
+#include "qpid/framing/ClusterShutdownBody.h"
+#include "qpid/framing/ClusterUpdateOfferBody.h"
+#include "qpid/framing/ClusterUpdateRequestBody.h"
 #include "qpid/log/Helpers.h"
-#include "qpid/sys/Thread.h"
-#include "qpid/sys/LatencyMetric.h"
+#include "qpid/log/Statement.h"
+#include "qpid/management/IdAllocator.h"
+#include "qpid/management/ManagementBroker.h"
 #include "qpid/memory.h"
 #include "qpid/shared_ptr.h"
-#include "qmf/org/apache/qpid/cluster/Package.h"
-#include "qmf/org/apache/qpid/cluster/ArgsClusterStopClusterNode.h"
+#include "qpid/sys/LatencyMetric.h"
+#include "qpid/sys/Thread.h"
 
 #include <boost/bind.hpp>
 #include <boost/cast.hpp>
@@ -101,11 +103,28 @@ Cluster::Cluster(const std::string& name_, const Url& url_, broker::Broker& b, b
                       poller),
     connections(*this),
     decoder(boost::bind(&PollableFrameQueue::push, &deliverFrameQueue, _1)),
+    initialized(false),
     state(INIT),
     lastSize(0),
     lastBroker(false),
     sequence(0)
 {
+    failoverExchange.reset(new FailoverExchange(this));
+    if (quorum_) quorum.init();
+    cpg.join(name);
+    // pump the CPG dispatch manually till we get initialized. 
+    while (!initialized)
+        cpg.dispatchOne();
+}
+
+Cluster::~Cluster() {
+    if (updateThread.id()) updateThread.join(); // Join the previous updatethread.
+}
+
+void Cluster::initialize() {
+    if (myUrl.empty())
+        myUrl = Url::getIpAddressesUrl(broker.getPort(broker::Broker::TCP_TRANSPORT));
+    QPID_LOG(notice, *this << " joining cluster " << name << " with url=" << myUrl);
     mAgent = ManagementAgent::Singleton::getInstance();
     if (mAgent != 0){
         _qmf::Package  packageInit(mAgent);
@@ -114,18 +133,11 @@ Cluster::Cluster(const std::string& name_, const Url& url_, broker::Broker& b, b
         mgmtObject->set_status("JOINING");
     }
     broker.getKnownBrokers = boost::bind(&Cluster::getUrls, this);
-    failoverExchange.reset(new FailoverExchange(this));
     dispatcher.start();
     deliverEventQueue.start();
     deliverFrameQueue.start();
-    QPID_LOG(notice, *this << " joining cluster " << name << " with url=" << myUrl);
-    if (quorum_) quorum.init();
-    cpg.join(name);
-    broker.addFinalizer(boost::bind(&Cluster::brokerShutdown, this)); // Must be last for exception safety.
-}
-
-Cluster::~Cluster() {
-    if (updateThread.id()) updateThread.join(); // Join the previous updatethread.
+    // Add finalizer last for exception safety.
+    broker.addFinalizer(boost::bind(&Cluster::brokerShutdown, this)); 
 }
 
 // Called in connection thread to insert a client connection.
@@ -279,6 +291,11 @@ void Cluster::configChange (
     cpg_address */*joined*/, int /*nJoined*/)
 {
     Mutex::ScopedLock l(lock);
+    if (state == INIT) {        // First config change.
+        // Recover only if we are first in cluster.
+        broker.setRecovery(nCurrent == 1);
+        initialized = true;
+    }
     QPID_LOG(debug, *this << " config change: " << AddrList(current, nCurrent) 
              << AddrList(left, nLeft, "( ", ")"));
     std::string addresses;
diff --git a/cpp/src/qpid/cluster/Cluster.h b/cpp/src/qpid/cluster/Cluster.h
index 1cfcd04c6f..f7955aa743 100644
--- a/cpp/src/qpid/cluster/Cluster.h
+++ b/cpp/src/qpid/cluster/Cluster.h
@@ -64,15 +64,17 @@ class Cluster : private Cpg::Handler, public management::Manageable {
   public:
     typedef boost::intrusive_ptr<Connection> ConnectionPtr;
     typedef std::vector<ConnectionPtr> Connections;
-    
-    /**
-     * Join a cluster. 
-     */
+
+    /** Construct the cluster in plugin earlyInitialize */ 
     Cluster(const std::string& name, const Url& url, broker::Broker&, bool useQuorum,
             size_t readMax, size_t writeEstimate);
 
     virtual ~Cluster();
 
+    /** Join the cluster in plugin initialize. Requires transport
+     * plugins to be available.. */
+    void initialize();
+
     // Connection map - called in connection threads.
     void addLocalConnection(const ConnectionPtr&); 
     void addShadowConnection(const ConnectionPtr&); 
@@ -177,7 +179,7 @@ class Cluster : private Cpg::Handler, public management::Manageable {
     boost::shared_ptr<sys::Poller> poller;
     Cpg cpg;
     const std::string name;
-    const Url myUrl;
+    Url myUrl;
     const MemberId myId;
     const size_t readMax;
     const size_t writeEstimate;
@@ -197,7 +199,10 @@ class Cluster : private Cpg::Handler, public management::Manageable {
 
     // Called only from event delivery thread
     Decoder decoder;
-    
+
+    // Used only during initialization
+    bool initialized;
+
     // Remaining members are protected by lock
     mutable sys::Monitor lock;
 
diff --git a/cpp/src/qpid/cluster/ClusterPlugin.cpp b/cpp/src/qpid/cluster/ClusterPlugin.cpp
index 1c15747c77..7e0bdcbea8 100644
--- a/cpp/src/qpid/cluster/ClusterPlugin.cpp
+++ b/cpp/src/qpid/cluster/ClusterPlugin.cpp
@@ -136,13 +136,13 @@ struct ClusterPlugin : public Plugin {
 
     Options* getOptions() { return &options; }
 
-    void initialize(Plugin::Target& target) {
+    void earlyInitialize(Plugin::Target& target) {
         if (values.name.empty()) return; // Only if --cluster-name option was specified.
         Broker* broker = dynamic_cast<Broker*>(&target);
         if (!broker) return;
         cluster = new Cluster(
             values.name,
-            values.getUrl(broker->getPort(Broker::TCP_TRANSPORT)),
+            values.url.empty() ? Url() : Url(values.url),
             *broker,
             values.quorum,
             values.readMax, values.writeEstimate*1024
@@ -158,7 +158,9 @@ struct ClusterPlugin : public Plugin {
         }
     }
 
-    void earlyInitialize(Plugin::Target&) {}
+    void initialize(Plugin::Target& ) {
+        cluster->initialize();
+    }
 };
 
 static ClusterPlugin instance; // Static initialization.