QPID-1567: Initial support for asynchronous queue state replication

* Added QueueEvents class with per broker instance
* Modified qpid::broker::Queue to notify QueueEvents of enqueues and dequeues (based on configuration)
* Added replication subdir containing two plugins:
  - an event listener that registers with QueueEvents and creates messages representing received 
    events on a replication queue
  - a custom exchange type for processing messages of the format created by the listener plugin
* Added new option for controlling event generation to qpid::client::QueueOptions
* Added new queue option to qpid-config script for the same



git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@734674 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 46 insertions, 0 deletions

diff --git a/qpid/cpp/src/replication.mk b/qpid/cpp/src/replication.mk
new file mode 100644
index 0000000000..6830f99d36
--- /dev/null
+++ b/qpid/cpp/src/replication.mk
@@ -0,0 +1,46 @@
+#
+# 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.
+
+# Make file for building two plugins for asynchronously replicating
+# queues.
+
+dmodule_LTLIBRARIES += replicating_listener.la replication_exchange.la
+
+# a queue event listener plugin that creates messages on a replication
+# queue corresponding to enqueue and dequeue events:
+replicating_listener_la_SOURCES =  \
+	qpid/replication/constants.h \
+	qpid/replication/ReplicatingEventListener.cpp \
+	qpid/replication/ReplicatingEventListener.h 
+
+replicating_listener_la_LIBADD = libqpidbroker.la
+
+replicating_listener_la_LDFLAGS = $(PLUGINLDFLAGS)
+
+# a custom exchange plugin that allows an exchange to be created that
+# can process the messages from a replication queue (populated on the
+# source system by the replicating listener plugin above) and take the
+# corresponding action on the local queues
+replication_exchange_la_SOURCES =  \
+	qpid/replication/constants.h \
+	qpid/replication/ReplicationExchange.cpp \
+	qpid/replication/ReplicationExchange.h 
+
+replication_exchange_la_LIBADD = libqpidbroker.la
+
+replication_exchange_la_LDFLAGS = $(PLUGINLDFLAGS)