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diff --git a/cpp/src/qpid/cluster/ClusterMap.h b/cpp/src/qpid/cluster/ClusterMap.h
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+++ b/cpp/src/qpid/cluster/ClusterMap.h
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+#ifndef QPID_CLUSTER_CLUSTERMAP_H
+#define QPID_CLUSTER_CLUSTERMAP_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/ClusterMapBody.h"
+#include "qpid/Url.h"
+#include <boost/optional.hpp>
+#include <vector>
+#include <map>
+
+namespace qpid {
+namespace cluster {
+
+/**
+ * Map of established cluster members and brain-dumps in progress.
+ * A dumper is an established member that is sending catch-up data.
+ * A dumpee is an aspiring member that is receiving catch-up data.
+ */
+class ClusterMap
+{
+  public:
+    ClusterMap();
+    
+    /** Update map for url-notice event.
+     *@param from Member that sent the notice.
+     *@param url  URL for from.
+     *@return MemberId of member that should dump to URL, or a null
+     * MemberId() if no dump is needed.
+     */
+    MemberId urlNotice(const MemberId& from, const Url& url);
+
+    /** Dump failed notice */
+    void dumpFailed(const MemberId&);
+    
+    /** Update map for leave event */
+    void leave(const MemberId&);
+
+    /** Number of unfinished dumps for member. */
+    int dumps(const MemberId&) const;
+
+    /** Convert map contents to a cluster control body. */
+    framing::ClusterMapBody toControl() const;
+
+    /** Initialize map contents from a cluster control body. */
+    void fromControl(const framing::ClusterMapBody&);
+
+    size_t memberCount() const { return members.size(); }    
+    size_t dumpeeCount() const { return dumpees.size(); }    
+    bool isMember(const MemberId& id) const { return members.find(id) != members.end(); }  
+    bool isDumpee(const MemberId& id) const { return dumpees.find(id) != dumpees.end(); }
+
+  private:
+    struct Dumpee { Url url; MemberId dumper; };
+    typedef std::map<MemberId, Url> MemberMap;
+    typedef std::map<MemberId, Dumpee> DumpeeMap;
+    struct MatchDumper;
+    
+    MemberId nextDumper() const;
+
+    MemberMap members;
+    DumpeeMap dumpees;
+};
+}} // namespace qpid::cluster
+
+#endif  /*!QPID_CLUSTER_CLUSTERMAP_H*/