1 files changed, 110 insertions, 0 deletions
diff --git a/qpid/wcf/src/Apache/Qpid/Interop/InputLink.h b/qpid/wcf/src/Apache/Qpid/Interop/InputLink.h
new file mode 100644
index 0000000000..136d53d280
--- /dev/null
+++ b/qpid/wcf/src/Apache/Qpid/Interop/InputLink.h
@@ -0,0 +1,110 @@
+/*
+* 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.
+*/
+
+#pragma once
+
+#include "MessageWaiter.h"
+#include "QpidAddress.h"
+
+namespace Apache {
+namespace Qpid {
+namespace Interop {
+
+using namespace System;
+using namespace System::Threading;
+using namespace System::Runtime::InteropServices;
+
+using namespace qpid::client;
+using namespace std;
+
+// smart pointer to the low level AMQP 0-10 frames of the message
+typedef qpid::framing::FrameSet::shared_ptr QpidFrameSetPtr;
+
+public ref class InputLink
+{
+private:
+    AmqpSession^ amqpSession;
+    Subscription* subscriptionp;
+    LocalQueue* localQueuep;
+    Demux::QueuePtr* queuePtrp;
+    Collections::Generic::List<MessageWaiter^>^ waiters;
+    bool disposed;
+    bool finalizing;
+    Object^ linkLock;
+    Object^ subscriptionLock;
+    QpidFrameSetPtr* dequeuedFrameSetpp;
+    ManualResetEvent^ asyncHelperWaitHandle;
+    // number of messages to buffer locally for future consumption
+    int prefetchLimit;
+    // the number of messages requested and not yet processed
+    int workingCredit;
+    // stopping and restarting the message flow
+    bool creditSyncPending;
+    // working credit low water mark
+    int minWorkingCredit;
+
+    bool browsing;
+    QpidAddress^ qpidAddress;
+
+    void Cleanup();
+    void ReleaseNative();
+    bool haveMessage();
+    void addWaiter(MessageWaiter^ waiter);
+    void asyncHelper();
+    AmqpMessage^ createAmqpMessage(IntPtr msgp);
+    void AdjustCredit();
+    void SyncCredit(Object ^);
+
+internal:
+    InputLink(AmqpSession^ session, System::String^ sourceQueue, qpid::client::AsyncSession *qpidSessionp,
+	      qpid::client::SubscriptionManager *qpidSubsMgrp, bool exclusive, bool temporary, System::String^ filterKey,
+	      System::String^ exchange);
+
+    bool internalWaitForMessage();
+    void unblockWaiter();
+    void resetQueue();
+    IntPtr nextLocalMessage();
+    void removeWaiter(MessageWaiter^ waiter);
+    void sync();
+
+public:  
+    ~InputLink();
+    !InputLink();
+    void Close();
+
+    bool TryReceive(TimeSpan timeout, [Out] AmqpMessage ^% amqpMessage);
+    IAsyncResult^ BeginTryReceive(TimeSpan timeout, AsyncCallback^ callback, Object^ state);
+    bool EndTryReceive(IAsyncResult^ result, [Out] AmqpMessage^% amqpMessage);
+
+    bool WaitForMessage(TimeSpan timeout);
+    IAsyncResult^ BeginWaitForMessage(TimeSpan timeout, AsyncCallback^ callback, Object^ state);
+    bool EndWaitForMessage(IAsyncResult^ result);
+
+    property int PrefetchLimit {
+	int get () { return prefetchLimit; }
+	void set (int value);
+    }
+
+    property bool Browsing {
+	bool get () { return browsing; }
+    }
+
+};
+
+}}} // namespace Apache::Qpid::Interop