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#ifndef QPID_CLUSTER_EVENTHANDLER_H
#define QPID_CLUSTER_EVENTHANDLER_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.
*
*/
// TODO aconway 2010-10-19: experimental cluster code.
#include "qpid/cluster/Cpg.h"
#include "qpid/cluster/PollerDispatch.h"
#include "qpid/cluster/types.h"
#include <boost/intrusive_ptr.hpp>
#include <vector>
namespace qpid {
namespace framing {
class AMQBody;
class AMQFrame;
}
namespace cluster {
class HandlerBase;
/**
* Dispatch events received from a CPG group.
* A container for Handler objects that handle specific cluster.xml classes.
* Thread unsafe: only called in its own CPG deliver thread context.
*/
class EventHandler : public Cpg::Handler
{
public:
EventHandler(boost::shared_ptr<sys::Poller> poller,
boost::function<void()> onError);
~EventHandler();
/** Add a handler */
void add(const boost::intrusive_ptr<HandlerBase>&);
/** Start polling */
void start();
void deliver( // CPG deliver callback.
cpg_handle_t /*handle*/,
const struct cpg_name *group,
uint32_t /*nodeid*/,
uint32_t /*pid*/,
void* /*msg*/,
int /*msg_len*/);
void configChange( // CPG config change callback.
cpg_handle_t /*handle*/,
const struct cpg_name */*group*/,
const struct cpg_address */*members*/, int /*nMembers*/,
const struct cpg_address */*left*/, int /*nLeft*/,
const struct cpg_address */*joined*/, int /*nJoined*/
);
MemberId getSender() { return sender; }
MemberId getSelf() { return self; }
Cpg& getCpg() { return cpg; }
template <class HandlerT> boost::intrusive_ptr<HandlerT> getHandler() {
for (size_t i = 0; i < handlers.size(); ++i) {
boost::intrusive_ptr<HandlerT> p(dynamic_cast<HandlerT*>(handlers[i].get()));
if (p) return p;
}
return 0;
}
private:
void handle(const framing::AMQFrame&);
Cpg cpg;
PollerDispatch dispatcher;
MemberId sender; // sender of current event.
MemberId self;
typedef std::vector<boost::intrusive_ptr<HandlerBase> > Handlers;
Handlers handlers;
};
}} // namespace qpid::cluster
#endif /*!QPID_CLUSTER_EVENTHANDLER_H*/
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