From ef9268528d3147173dfb0d2ef707ee3e4fc4f210 Mon Sep 17 00:00:00 2001
From: Alan Conway <aconway@apache.org>
Date: Fri, 12 Mar 2010 20:11:31 +0000
Subject: New cluster member pushes store when joining an active cluster.

Previously a broker with a clean store would not be able to join an
active cluster because the shtudown-id did not match. This commit
ensures that when a broker joins an active cluster, it always pushes
its store regardless of status. Clean/dirty status is only compared
when forming an initial cluster.

This change required splitting initialization into two phases:

PRE_INIT: occurs in the Cluster ctor during early-initialize. This
phase determines whether or not to push the store.

INIT: occurs after Cluster::initialize and does the remaining
initialization chores.


git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@922412 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/cluster/InitialStatusMap.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'cpp/src/qpid/cluster/InitialStatusMap.h')

diff --git a/cpp/src/qpid/cluster/InitialStatusMap.h b/cpp/src/qpid/cluster/InitialStatusMap.h
index eedc99b0b2..a5a600365e 100644
--- a/cpp/src/qpid/cluster/InitialStatusMap.h
+++ b/cpp/src/qpid/cluster/InitialStatusMap.h
@@ -51,12 +51,18 @@ class InitialStatusMap
     /** Process received status */
     void received(const MemberId&, const Status& is);
 
-    /**@return true if the map is complete. */
+    /**@return true if the map has an entry for all current cluster members. */
     bool isComplete() const;
+
+    size_t getActualSize() const { return map.size(); }
+    size_t getRequiredSize() const { return size; }
+
     /**@return true if the map was completed by the last config change or received. */
     bool transitionToComplete();
     /**@pre isComplete(). @return this node's elders */
     MemberSet getElders() const;
+    /**@pre isComplete(). @return True if there are active members of the cluster. */
+    bool isActive();
     /**@pre isComplete(). @return True if we need to request an update. */
     bool isUpdateNeeded();
     /**@pre isComplete(). @return Cluster-wide cluster ID. */
@@ -71,8 +77,9 @@ class InitialStatusMap
   private:
     typedef std::map<MemberId, boost::optional<Status> > Map;
     static bool notInitialized(const Map::value_type&);
-    static bool isActive(const Map::value_type&);
+    static bool isActiveEntry(const Map::value_type&);
     static bool hasStore(const Map::value_type&);
+
     Map map;
     MemberSet firstConfig;
     MemberId self;
-- 
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