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author | Robert Gemmell <robbie@apache.org> | 2015-06-25 10:22:51 +0000 |
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committer | Robert Gemmell <robbie@apache.org> | 2015-06-25 10:22:51 +0000 |
commit | 32ae758bc2e8fd962b66a4ab6341b14009f1907e (patch) | |
tree | 2f4d8174813284a6ea58bb6b7f6520aa92287476 /qpid/cpp/src/qpid/ha/IdSetter.h | |
parent | 116d91ad7825a98af36a869fc751206fbce0c59f (diff) | |
parent | f7e896076143de4572b4f1f67ef0765125f2498d (diff) | |
download | qpid-python-32ae758bc2e8fd962b66a4ab6341b14009f1907e.tar.gz |
NO-JIRA: create branch for qpid-cpp 0.34 RC process
git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/qpid-cpp-0.34-rc@1687469 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'qpid/cpp/src/qpid/ha/IdSetter.h')
-rw-r--r-- | qpid/cpp/src/qpid/ha/IdSetter.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/ha/IdSetter.h b/qpid/cpp/src/qpid/ha/IdSetter.h new file mode 100644 index 0000000000..94bc74668e --- /dev/null +++ b/qpid/cpp/src/qpid/ha/IdSetter.h @@ -0,0 +1,76 @@ +#ifndef QPID_HA_IDSETTER_H +#define QPID_HA_IDSETTER_H + +/* + * + * 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 "types.h" + +#include "qpid/broker/Message.h" +#include "qpid/broker/MessageInterceptor.h" +#include "qpid/log/Statement.h" +#include "qpid/sys/Mutex.h" +#include "qpid/sys/AtomicValue.h" + + +namespace qpid { +namespace ha { +class LogPrefix; + +/** + * A MessageInterceptor that sets the ReplicationId on each message as it is + * enqueued on a primary queue. + * + * THREAD UNSAFE: Called sequentially under the queue lock. + */ +class IdSetter : public broker::MessageInterceptor +{ + public: + IdSetter(const LogPrefix& lp, const std::string& q, ReplicationId firstId=1) : + logPrefix(lp), queue(q), nextId(firstId) + {} + + void record(broker::Message& m) { + // Record is called when a message is first delivered to a queue, before it has + // been enqueued or saved in a transaction buffer. This is when we normally want + // to assign a replication-id. + m.setReplicationId(nextId++); + } + + void publish(broker::Message& m) { + // Publish is called when a message is assigned a position on the queue, + // after any transaction has comitted. Normally this is too late to + // assign a replication-id but during broker start-up and recovery from + // store record() is not called, so set the ID now if not already set. + if (!m.hasReplicationId()) { + m.setReplicationId(nextId++); + } + } + + private: + const LogPrefix& logPrefix; + std::string queue; + sys::AtomicValue<uint32_t> nextId; +}; + +}} // namespace qpid::ha + +#endif /*!QPID_HA_IDSETTER_H*/ |