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diff --git a/qpid/cpp/src/qpid/client/MessageReplayTracker.h b/qpid/cpp/src/qpid/client/MessageReplayTracker.h
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+#ifndef QPID_CLIENT_MESSAGEREPLAYTRACKER_H
+#define QPID_CLIENT_MESSAGEREPLAYTRACKER_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 "qpid/client/AsyncSession.h"
+#include "qpid/client/Message.h"
+#include "qpid/client/ClientImportExport.h"
+#include <list>
+#include <string>
+
+namespace qpid {
+namespace client {
+
+/**
+ * Utility to track messages sent asynchronously, allowing those that
+ * are indoubt to be replayed over a new session.
+ */
+class QPID_CLIENT_CLASS_EXTERN MessageReplayTracker
+{
+ public:
+ QPID_CLIENT_EXTERN MessageReplayTracker(uint flushInterval);
+ QPID_CLIENT_EXTERN void send(const Message& message, const std::string& destination = "");
+ QPID_CLIENT_EXTERN void init(AsyncSession session);
+ QPID_CLIENT_EXTERN void replay(AsyncSession session);
+ QPID_CLIENT_EXTERN void setFlushInterval(uint interval);
+ QPID_CLIENT_EXTERN uint getFlushInterval();
+ QPID_CLIENT_EXTERN void checkCompletion();
+
+ template <class F> void foreach(F& f) {
+ for (std::list<ReplayRecord>::const_iterator i = buffer.begin(); i != buffer.end(); i++) {
+ f(i->message);
+ }
+ }
+
+ private:
+ struct ReplayRecord
+ {
+ Completion status;
+ Message message;
+ std::string destination;
+
+ ReplayRecord(const Message& message, const std::string& destination);
+ void send(MessageReplayTracker&);
+ bool isComplete();
+ };
+
+ AsyncSession session;
+ uint flushInterval;
+ uint count;
+ std::list<ReplayRecord> buffer;
+};
+}} // namespace qpid::client
+
+#endif /*!QPID_CLIENT_MESSAGEREPLAYTRACKER_H*/