QPID-3603: HA broker backup/primary ready checks.

- Introduce HA broker state machien
- Inform backup queues when ready.
- Incomplete implementation of backup ready check.
 - does not count correctly after a failover, see countUnready.
 - Existing replicator bridges updated out of sync with BrokerReplicator initialize.
 - Does not handle multi-messages responses.
- Newly promoted HA primary waits for backups to be ready before accepting clients.

- Uniform log prefixes for HA messages.
- qpid-ha tests, call qpid-ha python code directly.

- Move excluder from Backup to HaBroker, it is also used in PROMOTING.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1338889 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 40 insertions, 0 deletions

diff --git a/cpp/src/qpid/ha/LogPrefix.cpp b/cpp/src/qpid/ha/LogPrefix.cpp
new file mode 100644
index 0000000000..685e623287
--- /dev/null
+++ b/cpp/src/qpid/ha/LogPrefix.cpp
@@ -0,0 +1,40 @@
+/*
+ *
+ * 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 "LogPrefix.h"
+#include "HaBroker.h"
+#include <iostream>
+
+namespace qpid {
+namespace ha {
+
+LogPrefix::LogPrefix(HaBroker& hb, const std::string& queue) : haBroker(&hb), status(0) {
+    if (queue.size()) tail = " queue " + queue;
+}
+
+LogPrefix::LogPrefix(BrokerStatus& s) : haBroker(0), status(&s) {}
+
+std::ostream& operator<<(std::ostream& o, const LogPrefix& l) {
+    return o << "HA("
+             << printable(l.status ? *l.status : l.haBroker->getStatus())
+             << ")" << l.tail << ": ";
+}
+
+}} // namespace qpid::ha