1 files changed, 104 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/cluster/Multicaster.cpp b/qpid/cpp/src/qpid/cluster/Multicaster.cpp
new file mode 100644
index 0000000000..8916de9628
--- /dev/null
+++ b/qpid/cpp/src/qpid/cluster/Multicaster.cpp
@@ -0,0 +1,104 @@
+/*
+ *
+ * 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/cluster/Multicaster.h"
+#include "qpid/cluster/Cpg.h"
+#include "qpid/log/Statement.h"
+#include "qpid/framing/AMQBody.h"
+#include "qpid/framing/AMQFrame.h"
+
+namespace qpid {
+namespace cluster {
+
+Multicaster::Multicaster(Cpg& cpg_, 
+                         const boost::shared_ptr<sys::Poller>& poller,
+                         boost::function<void()> onError_) :
+    onError(onError_), cpg(cpg_), 
+    queue(boost::bind(&Multicaster::sendMcast, this, _1), poller),
+    ready(false), bypass(true)
+{}
+
+void Multicaster::mcastControl(const framing::AMQBody& body, const ConnectionId& id) {
+    mcast(Event::control(body, id));
+}
+
+void Multicaster::mcastControl(const framing::AMQFrame& frame, const ConnectionId& id) {
+    mcast(Event::control(frame, id));
+}
+
+void Multicaster::mcastBuffer(const char* data, size_t size, const ConnectionId& id) {
+    Event e(DATA, id, size);
+    memcpy(e.getData(), data, size);
+    mcast(e);
+}
+
+void Multicaster::mcast(const Event& e) {
+    {
+        sys::Mutex::ScopedLock l(lock);
+        if (!ready && e.isConnection()) {
+            holdingQueue.push_back(e);
+            return;
+        }
+    }
+    QPID_LOG(trace, "MCAST " << e);
+    if (bypass) {               // direct, don't queue
+        iovec iov = e.toIovec();
+        while (!cpg.mcast(&iov, 1))
+            ;
+    }
+    else
+        queue.push(e);
+}
+
+Multicaster::PollableEventQueue::Batch::const_iterator Multicaster::sendMcast(const PollableEventQueue::Batch& values) {
+    try {
+        PollableEventQueue::Batch::const_iterator i = values.begin();
+        while( i != values.end()) {
+            iovec iov = i->toIovec();
+            if (!cpg.mcast(&iov, 1)) {
+                // cpg didn't send because of CPG flow control.
+                break; 
+            }
+            ++i;
+        }
+        return i;
+    }
+    catch (const std::exception& e) {
+        QPID_LOG(critical, "Multicast error: " << e.what());
+        queue.stop();
+        onError();
+        return values.end();
+    }
+}
+
+void Multicaster::start() {
+    queue.start();
+    bypass = false;
+}
+
+void Multicaster::setReady() {
+    sys::Mutex::ScopedLock l(lock);
+    ready = true;
+    std::for_each(holdingQueue.begin(), holdingQueue.end(), boost::bind(&Multicaster::mcast, this, _1));
+    holdingQueue.clear();
+}
+
+}} // namespace qpid::cluster