* cluster/ClasifierHandler: classifies frames for clustering treatment.

   Currently classifies wiring separately from everything else.


git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@553024 13f79535-47bb-0310-9956-ffa450edef68

2 files changed, 121 insertions, 0 deletions

diff --git a/cpp/src/qpid/cluster/ClassifierHandler.cpp b/cpp/src/qpid/cluster/ClassifierHandler.cpp
new file mode 100644
index 0000000000..0d0465c89e
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+++ b/cpp/src/qpid/cluster/ClassifierHandler.cpp
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+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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 "ClassifierHandler.h"
+
+#include "qpid/framing/AMQFrame.h"
+#include "qpid/framing/ExchangeDeclareBody.h"
+#include "qpid/framing/ExchangeDeleteBody.h"
+#include "qpid/framing/QueueBindBody.h"
+#include "qpid/framing/QueueDeclareBody.h"
+#include "qpid/framing/QueueDeleteBody.h"
+#include "qpid/framing/QueueUnbindBody.h"
+
+
+namespace qpid {
+namespace cluster {
+
+using namespace framing;
+
+typedef uint32_t FullMethodId;  // Combind class & method ID.
+
+FullMethodId fullId(ClassId c, MethodId m) { return c<<16+m; }
+
+FullMethodId fullId(const shared_ptr<AMQMethodBody>& body) {
+    return fullId(body->amqpClassId(), body->amqpMethodId());
+}
+
+template <class M>
+FullMethodId fullId() { return fullId(M::CLASS_ID, M::METHOD_ID); }
+
+
+ClassifierHandler::ClassifierHandler(Chain wiring, Chain other)
+    : FrameHandler(other)
+{
+    map[fullId<ExchangeDeclareBody>()] = wiring;
+    map[fullId<ExchangeDeleteBody>()] = wiring;
+    map[fullId<QueueBindBody>()] = wiring;
+    map[fullId<QueueDeclareBody>()] = wiring;
+    map[fullId<QueueDeleteBody>()] = wiring;
+    map[fullId<QueueUnbindBody>()] = wiring;
+}
+
+void  ClassifierHandler::handle(AMQFrame& frame) {
+    // TODO aconway 2007-07-03: Flatten the frame hierarchy so we
+    // can do a single lookup to dispatch a frame.
+    Chain chosen;
+    shared_ptr<AMQMethodBody> method =
+        dynamic_pointer_cast<AMQMethodBody>(frame.getBody());
+    if (method) 
+        chosen=map[fullId(method)];
+    if (chosen)
+        chosen->handle(frame);
+    else
+        next->handle(frame);
+}
+ 
+
+}} // namespace qpid::cluster
diff --git a/cpp/src/qpid/cluster/ClassifierHandler.h b/cpp/src/qpid/cluster/ClassifierHandler.h
new file mode 100644
index 0000000000..8c2f4ef85f
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+++ b/cpp/src/qpid/cluster/ClassifierHandler.h
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+#ifndef QPID_CLUSTER_CLASSIFIERHANDLER_H
+#define QPID_CLUSTER_CLASSIFIERHANDLER_H
+
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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/framing/FrameHandler.h"
+#include "qpid/framing/amqp_types.h"
+
+#include <map>
+
+namespace qpid {
+namespace cluster {
+
+/**
+ * Classify frames and forward to the appropriate handler.
+ */
+class ClassifierHandler : public framing::FrameHandler
+{
+  public:
+    ClassifierHandler(Chain wiring, Chain other);
+
+    void handle(framing::AMQFrame& frame);
+
+  private:
+    std::map<uint32_t, framing::FrameHandler::Chain> map;
+};
+
+}} // namespace qpid::cluster
+
+
+
+#endif  /*!QPID_CLUSTER_CLASSIFIERHANDLER_H*/