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#ifndef QPID_BROKER_ASYNCCOMMANDCALLBACK_H
#define QPID_BROKER_ASYNCCOMMANDCALLBACK_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 "qpid/broker/SessionState.h"
#include "qpid/broker/AsyncCompletion.h"
namespace qpid {
namespace broker {
/**
* An AsyncCompletion::Callback that executes the final part of an
* async-completed command in the proper context:
*
* - Complete synchronously: Called in the initiating thread.
* - Complete asynchronously: Scheduled on the IO thread.
*
* Errors thrown by the command are returned to the correct session on the client
* even if we are executed via an IO callback.
*/
class AsyncCommandCallback : public SessionState::AsyncCommandContext {
public:
/** Command function returns a string containing the encoded result of the
* command, or empty for no result. It may raise an exception.
*/
typedef boost::function<std::string ()> Command;
/**
* @param syncPoint: if true have this command complete only when all
* preceeding commands are complete, like execution.sync.
*/
AsyncCommandCallback(SessionState& ss, Command f, bool syncPoint=false);
void completed(bool sync);
boost::intrusive_ptr<AsyncCompletion::Callback> clone();
private:
void complete();
void doCommand();
Command command;
uint16_t channel;
bool syncPoint;
};
}} // namespace qpid::broker
#endif /*!QPID_BROKER_ASYNCCOMMANDCALLBACK_H*/
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