Optional cluster integration with cman quorum service.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@718693 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 53 insertions, 0 deletions

diff --git a/cpp/src/qpid/cluster/Quorum_cman.cpp b/cpp/src/qpid/cluster/Quorum_cman.cpp
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+++ b/cpp/src/qpid/cluster/Quorum_cman.cpp
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+/*
+ *
+ * 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 "Quorum.h"
+#include "qpid/log/Statement.h"
+#include "qpid/Options.h"
+#include "qpid/sys/Time.h"
+
+namespace qpid {
+namespace cluster {
+
+Quorum::Quorum() : enable(false), cman(0) {}
+
+Quorum::~Quorum() { if (cman) cman_finish(cman); }
+
+void Quorum::addOption(Options& opts) {
+    opts.addOptions()("cluster-cman", optValue(enable), "Enable integration with CMAN Cluster Manager");
+}
+
+void Quorum::init() {
+    if (enable) {
+        cman = cman_init(0);
+        if (cman == 0) throw ErrnoException("Can't connect to cman service");
+        // FIXME aconway 2008-11-13: configure max wait.
+        for (int retry = 0;  !cman_is_quorate(cman) && retry < 30; retry++) {
+            QPID_LOG(notice, "Waiting for cluster quorum: " << sys::strError(errno));
+            sys::sleep(1);
+        }
+        if (!cman_is_quorate(cman))
+            throw ErrnoException("Timed out waiting for cluster quorum");
+    }
+}
+
+bool Quorum::isQuorate() { return cman_is_quorate(cman); }
+
+}} // namespace qpid::cluster