diff options
Diffstat (limited to 'cpp/src/qpid/cluster/Multicaster.cpp')
-rw-r--r-- | cpp/src/qpid/cluster/Multicaster.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/cpp/src/qpid/cluster/Multicaster.cpp b/cpp/src/qpid/cluster/Multicaster.cpp new file mode 100644 index 0000000000..229d7edb1e --- /dev/null +++ b/cpp/src/qpid/cluster/Multicaster.cpp @@ -0,0 +1,103 @@ +/* + * + * 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 "qpid/cluster/Multicaster.h" +#include "qpid/cluster/Cpg.h" +#include "qpid/log/Statement.h" +#include "qpid/framing/AMQBody.h" +#include "qpid/framing/AMQFrame.h" + +namespace qpid { +namespace cluster { + +Multicaster::Multicaster(Cpg& cpg_, + const boost::shared_ptr<sys::Poller>& poller, + boost::function<void()> onError_) : + onError(onError_), cpg(cpg_), + queue(boost::bind(&Multicaster::sendMcast, this, _1), poller), + ready(false) +{ + queue.start(); +} + +void Multicaster::mcastControl(const framing::AMQBody& body, const ConnectionId& id) { + mcast(Event::control(body, id)); +} + +void Multicaster::mcastControl(const framing::AMQFrame& frame, const ConnectionId& id) { + mcast(Event::control(frame, id)); +} + +void Multicaster::mcastBuffer(const char* data, size_t size, const ConnectionId& id) { + Event e(DATA, id, size); + memcpy(e.getData(), data, size); + mcast(e); +} + +void Multicaster::mcast(const Event& e) { + { + sys::Mutex::ScopedLock l(lock); + if (!ready) { + if (e.isConnection()) holdingQueue.push_back(e); + else { + iovec iov = e.toIovec(); + // FIXME aconway 2009-11-23: configurable retry --cluster-retry + if (!cpg.mcast(&iov, 1)) + throw Exception("CPG flow control error during initialization"); + QPID_LOG(trace, "MCAST (direct) " << e); + } + return; + } + } + QPID_LOG(trace, "MCAST " << e); + queue.push(e); +} + + +Multicaster::PollableEventQueue::Batch::const_iterator Multicaster::sendMcast(const PollableEventQueue::Batch& values) { + try { + PollableEventQueue::Batch::const_iterator i = values.begin(); + while( i != values.end()) { + iovec iov = i->toIovec(); + if (!cpg.mcast(&iov, 1)) { + // cpg didn't send because of CPG flow control. + break; + } + ++i; + } + return i; + } + catch (const std::exception& e) { + QPID_LOG(critical, "Multicast error: " << e.what()); + queue.stop(); + onError(); + return values.end(); + } +} + +void Multicaster::setReady() { + sys::Mutex::ScopedLock l(lock); + ready = true; + std::for_each(holdingQueue.begin(), holdingQueue.end(), boost::bind(&Multicaster::mcast, this, _1)); + holdingQueue.clear(); +} + +}} // namespace qpid::cluster |