QPID-3603: Merge new HA foundations.

Merged from qpid-3603-7. This is basic support for the new HA approach.
For information & limitations see qpid/cpp/design_docs/new-ha-design.txt.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1245587 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 67 insertions, 0 deletions

diff --git a/cpp/src/qpid/ha/HaPlugin.cpp b/cpp/src/qpid/ha/HaPlugin.cpp
new file mode 100644
index 0000000000..fc9e48411d
--- /dev/null
+++ b/cpp/src/qpid/ha/HaPlugin.cpp
@@ -0,0 +1,67 @@
+/*
+ *
+ * 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 "HaBroker.h"
+#include "Settings.h"
+#include "qpid/Plugin.h"
+#include "qpid/Options.h"
+#include "qpid/broker/Broker.h"
+
+
+namespace qpid {
+namespace ha {
+
+using namespace std;
+
+struct Options : public qpid::Options {
+    Settings& settings;
+    Options(Settings& s) : qpid::Options("HA Options"), settings(s) {
+        addOptions()
+            ("ha-enable", optValue(settings.enabled, "yes|no"), "Enable High Availability features")
+            ("ha-client-url", optValue(settings.clientUrl,"URL"), "URL that clients use to connect and fail over.")
+            ("ha-broker-url", optValue(settings.brokerUrl,"URL"), "URL that backup brokers use to connect and fail over.")
+            ("ha-username", optValue(settings.username, "USER"), "Username for connections between brokers")
+            ("ha-password", optValue(settings.password, "PASS"), "Password for connections between brokers")
+            ("ha-mechanism", optValue(settings.mechanism, "MECH"), "Authentication mechanism for connections between brokers")
+            ;
+    }
+};
+
+struct HaPlugin : public Plugin {
+
+    Settings settings;
+    Options options;
+    auto_ptr<HaBroker> haBroker;
+
+    HaPlugin() : options(settings) {}
+
+    Options* getOptions() { return &options; }
+
+    void earlyInitialize(Plugin::Target& ) {}
+
+    void initialize(Plugin::Target& target) {
+        broker::Broker* broker = dynamic_cast<broker::Broker*>(&target);
+        if (broker && settings.enabled) {
+            haBroker.reset(new ha::HaBroker(*broker, settings));
+        } else
+            QPID_LOG(notice, "HA: Disabled");
+    }
+};
+
+static HaPlugin instance; // Static initialization.
+
+}} // namespace qpid::ha