1 files changed, 87 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/client/amqp0_10/AcceptTracker.h b/qpid/cpp/src/qpid/client/amqp0_10/AcceptTracker.h
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index 0000000000..87890e41cc
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+++ b/qpid/cpp/src/qpid/client/amqp0_10/AcceptTracker.h
@@ -0,0 +1,87 @@
+#ifndef QPID_CLIENT_AMQP0_10_ACCEPTTRACKER_H
+#define QPID_CLIENT_AMQP0_10_ACCEPTTRACKER_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/Completion.h"
+#include "qpid/framing/SequenceNumber.h"
+#include "qpid/framing/SequenceSet.h"
+#include <deque>
+#include <map>
+
+namespace qpid {
+namespace client {
+namespace amqp0_10 {
+
+/**
+ * Tracks the set of messages requiring acceptance, and those for
+ * which an accept has been issued but is yet to be confirmed
+ * complete.
+ */
+class AcceptTracker
+{
+  public:
+    void delivered(const std::string& destination, const qpid::framing::SequenceNumber& id);
+    void accept(qpid::client::AsyncSession&);
+    void accept(qpid::framing::SequenceNumber, qpid::client::AsyncSession&);
+    void release(qpid::client::AsyncSession&);
+    uint32_t acceptsPending();
+    uint32_t acceptsPending(const std::string& destination);
+    void reset();
+  private:
+    struct State 
+    {
+        /**
+         * ids of messages that have been delivered but not yet
+         * accepted
+         */
+        qpid::framing::SequenceSet unaccepted;
+        /**
+         * ids of messages for which an accept has been issued but not
+         * yet confirmed as completed
+         */
+        qpid::framing::SequenceSet unconfirmed;
+
+        void accept();
+        void accept(qpid::framing::SequenceNumber);
+        void release();
+        uint32_t acceptsPending();
+        void completed(qpid::framing::SequenceSet&);
+    };
+    typedef std::map<std::string, State> StateMap;
+    struct Record
+    {
+        qpid::client::Completion status;
+        qpid::framing::SequenceSet accepted;
+    };
+    typedef std::deque<Record> Records;
+
+    State aggregateState;
+    StateMap destinationState;
+    Records pending;
+
+    void checkPending();
+    void completed(qpid::framing::SequenceSet&);
+};
+}}} // namespace qpid::client::amqp0_10
+
+#endif  /*!QPID_CLIENT_AMQP0_10_ACCEPTTRACKER_H*/