1 files changed, 90 insertions, 0 deletions
diff --git a/cpp/src/qpid/ha/Backup.cpp b/cpp/src/qpid/ha/Backup.cpp
new file mode 100644
index 0000000000..5acbfb9d5f
--- /dev/null
+++ b/cpp/src/qpid/ha/Backup.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 "Backup.h"
+#include "Settings.h"
+#include "BrokerReplicator.h"
+#include "ReplicatingSubscription.h"
+#include "ConnectionExcluder.h"
+#include "qpid/Url.h"
+#include "qpid/amqp_0_10/Codecs.h"
+#include "qpid/broker/Bridge.h"
+#include "qpid/broker/Broker.h"
+#include "qpid/broker/SessionHandler.h"
+#include "qpid/broker/Link.h"
+#include "qpid/framing/AMQP_ServerProxy.h"
+#include "qpid/framing/AMQFrame.h"
+#include "qpid/framing/FieldTable.h"
+#include "qpid/framing/MessageTransferBody.h"
+#include "qpid/types/Variant.h"
+
+namespace qpid {
+namespace ha {
+
+using namespace framing;
+using namespace broker;
+using types::Variant;
+using std::string;
+
+Backup::Backup(broker::Broker& b, const Settings& s) :
+    broker(b), settings(s), excluder(new ConnectionExcluder())
+{
+    // Empty brokerUrl means delay initialization until setUrl() is called.
+    if (!s.brokerUrl.empty()) initialize(Url(s.brokerUrl));
+}
+
+void Backup::initialize(const Url& url) {
+    assert(!url.empty());
+    QPID_LOG(notice, "Ha: Backup started: " << url);
+    string protocol = url[0].protocol.empty() ? "tcp" : url[0].protocol;
+    // Declare the link
+    std::pair<Link::shared_ptr, bool> result = broker.getLinks().declare(
+        url[0].host, url[0].port, protocol,
+        false,              // durable
+        settings.mechanism, settings.username, settings.password);
+    assert(result.second);  // FIXME aconway 2011-11-23: error handling
+    link = result.first;
+    link->setUrl(url);
+
+    replicator.reset(new BrokerReplicator(link));
+    broker.getExchanges().registerExchange(replicator);
+    broker.getConnectionObservers().add(excluder);
+}
+
+void Backup::setBrokerUrl(const Url& url) {
+    // Ignore empty URLs seen during start-up for some tests.
+    if (url.empty()) return;
+    sys::Mutex::ScopedLock l(lock);
+    if (link) {                 // URL changed after we initialized.
+        QPID_LOG(info, "HA: Backup failover URL set to " << url);
+        link->setUrl(url);
+    }
+    else {
+        initialize(url);        // Deferred initialization
+    }
+}
+
+Backup::~Backup() {
+    if (link) link->close();
+    if (replicator.get()) broker.getExchanges().destroy(replicator->getName());
+    broker.getConnectionObservers().remove(excluder); // This allows client connections.
+}
+
+}} // namespace qpid::ha