1 files changed, 90 insertions, 0 deletions
diff --git a/cpp/src/qpid/broker/PreviewConnectionCodec.cpp b/cpp/src/qpid/broker/PreviewConnectionCodec.cpp
new file mode 100644
index 0000000000..81ec7f7076
--- /dev/null
+++ b/cpp/src/qpid/broker/PreviewConnectionCodec.cpp
@@ -0,0 +1,90 @@
+/*
+ *
+ * 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 "PreviewConnectionCodec.h"
+#include "qpid/log/Statement.h"
+
+namespace qpid {
+namespace broker {
+
+using sys::Mutex;
+
+PreviewConnectionCodec::PreviewConnectionCodec(sys::OutputControl& o, Broker& broker, const std::string& id)
+    : frameQueueClosed(false), output(o), connection(this, broker, id), identifier(id) {}
+
+size_t  PreviewConnectionCodec::decode(const char* buffer, size_t size) {
+    framing::Buffer in(const_cast<char*>(buffer), size);
+    framing::AMQFrame frame;
+    while(frame.decode(in)) {
+        QPID_LOG(trace, "RECV [" << identifier << "]: " << frame);
+        connection.received(frame);
+    }
+    return in.getPosition();
+}
+
+bool PreviewConnectionCodec::canEncode() {
+    if (!frameQueueClosed) connection.doOutput();
+    return !frameQueue.empty();
+}
+
+bool PreviewConnectionCodec::isClosed() const {
+    Mutex::ScopedLock l(frameQueueLock);
+    return frameQueueClosed;
+}
+
+size_t  PreviewConnectionCodec::encode(const char* buffer, size_t size) {
+    Mutex::ScopedLock l(frameQueueLock);
+    framing::Buffer out(const_cast<char*>(buffer), size);
+    while (!frameQueue.empty() && (frameQueue.front().size() <= out.available())) {
+            frameQueue.front().encode(out);
+            QPID_LOG(trace, "SENT [" << identifier << "]: " << frameQueue.front());
+            frameQueue.pop();
+    }
+    if (!frameQueue.empty() && frameQueue.front().size() > size)
+        throw framing::ContentTooLargeException(QPID_MSG("Could not write frame, too large for buffer."));
+    return out.getPosition();
+}
+
+void  PreviewConnectionCodec::activateOutput() { output.activateOutput(); }
+
+void  PreviewConnectionCodec::close() {
+    // Close the output queue.
+    Mutex::ScopedLock l(frameQueueLock);
+    frameQueueClosed = true;
+}
+
+void  PreviewConnectionCodec::closed() {
+    connection.closed();
+}
+
+void PreviewConnectionCodec::send(framing::AMQFrame& f) {
+    {
+        Mutex::ScopedLock l(frameQueueLock);
+	if (!frameQueueClosed)
+            frameQueue.push(f);
+    }
+    activateOutput();
+}
+
+framing::ProtocolVersion PreviewConnectionCodec::getVersion() const {
+    return framing::ProtocolVersion(99,0);
+}
+
+}} // namespace qpid::broker