summaryrefslogtreecommitdiff
path: root/cpp/src/qpid/cluster/InitialStatusMap.h
diff options
context:
space:
mode:
Diffstat (limited to 'cpp/src/qpid/cluster/InitialStatusMap.h')
-rw-r--r--cpp/src/qpid/cluster/InitialStatusMap.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/cpp/src/qpid/cluster/InitialStatusMap.h b/cpp/src/qpid/cluster/InitialStatusMap.h
new file mode 100644
index 0000000000..d139722623
--- /dev/null
+++ b/cpp/src/qpid/cluster/InitialStatusMap.h
@@ -0,0 +1,68 @@
+#ifndef QPID_CLUSTER_INITIALSTATUSMAP_H
+#define QPID_CLUSTER_INITIALSTATUSMAP_H
+
+/*
+ *
+ * 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.
+ *
+ */
+
+#include "types.h"
+#include <qpid/framing/ClusterInitialStatusBody.h>
+#include <boost/optional.hpp>
+
+namespace qpid {
+namespace cluster {
+
+/**
+ * Track status of cluster members during initialization.
+ */
+class InitialStatusMap
+{
+ public:
+ typedef framing::ClusterInitialStatusBody Status;
+
+ InitialStatusMap(const MemberId& self);
+ /** Process a config change. @return true if we need to re-send our status */
+ void configChange(const MemberSet& newConfig);
+ /** @return true if we need to re-send status */
+ bool isResendNeeded();
+
+ /** Process received status */
+ void received(const MemberId&, const Status& is);
+
+ /**@return true if the map is complete. */
+ bool isComplete();
+ /**@pre isComplete. @return this node's elders */
+ MemberSet getElders();
+ /**@pre isComplete. @return True if we need an update. */
+ bool isUpdateNeeded();
+
+ private:
+ typedef std::map<MemberId, boost::optional<Status> > Map;
+ static bool notInitialized(const Map::value_type&);
+ static bool isActive(const Map::value_type&);
+ void check();
+ Map map;
+ MemberSet firstConfig;
+ MemberId self;
+ bool complete, updateNeeded, resendNeeded;
+};
+}} // namespace qpid::cluster
+
+#endif /*!QPID_CLUSTER_INITIALSTATUSMAP_H*/