1 files changed, 97 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/client/FailoverListener.cpp b/qpid/cpp/src/qpid/client/FailoverListener.cpp
new file mode 100644
index 0000000000..bf4fa91d49
--- /dev/null
+++ b/qpid/cpp/src/qpid/client/FailoverListener.cpp
@@ -0,0 +1,97 @@
+/*
+ *
+ * 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/FailoverListener.h"
+#include "qpid/client/Session.h"
+#include "qpid/framing/Uuid.h"
+#include "qpid/log/Statement.h"
+#include "qpid/log/Helpers.h"
+
+namespace qpid {
+namespace client {
+
+const std::string FailoverListener::AMQ_FAILOVER("amq.failover");
+
+FailoverListener::FailoverListener(Connection c) :
+    connection(c),
+    session(c.newSession(AMQ_FAILOVER+"."+framing::Uuid(true).str())),
+    subscriptions(session)
+{ init(true); }
+
+FailoverListener::FailoverListener(Connection c, bool useInitial) :
+    connection(c),
+    session(c.newSession(AMQ_FAILOVER+"."+framing::Uuid(true).str())),
+    subscriptions(session)
+{ init(useInitial); }
+
+void FailoverListener::init(bool useInitial) {
+    if (useInitial) knownBrokers = connection.getInitialBrokers();
+    if (session.exchangeQuery(arg::name=AMQ_FAILOVER).getNotFound()) {
+        session.close();
+        return;
+    }
+    std::string qname=session.getId().getName();
+    session.queueDeclare(arg::queue=qname, arg::exclusive=true, arg::autoDelete=true);
+    session.exchangeBind(arg::queue=qname, arg::exchange=AMQ_FAILOVER);
+    subscriptions.subscribe(*this, qname, SubscriptionSettings(FlowControl::unlimited(),
+                                                                ACCEPT_MODE_NONE));
+    thread = sys::Thread(*this);
+}
+
+void FailoverListener::run() {
+    try {
+        subscriptions.run();
+    } catch(...) {}
+}
+
+FailoverListener::~FailoverListener() {
+    try {
+        subscriptions.stop();
+        thread.join();
+        if (connection.isOpen()) {
+            session.sync();
+            session.close();
+        }
+    } catch (...) {}
+}
+
+void FailoverListener::received(Message& msg) {
+    sys::Mutex::ScopedLock l(lock);
+    knownBrokers = getKnownBrokers(msg);
+}
+
+std::vector<Url> FailoverListener::getKnownBrokers() const {
+    sys::Mutex::ScopedLock l(lock);
+    return knownBrokers;
+}
+
+std::vector<Url> FailoverListener::getKnownBrokers(const Message& msg) {
+    std::vector<Url> knownBrokers;
+    framing::Array urlArray;
+    msg.getHeaders().getArray("amq.failover", urlArray);
+    for (framing::Array::ValueVector::const_iterator i = urlArray.begin();
+         i != urlArray.end();
+         ++i ) 
+        knownBrokers.push_back(Url((*i)->get<std::string>()));
+    return knownBrokers;
+}
+
+
+}} // namespace qpid::client