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/*
* 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 "qmf/engine/SequenceManager.h"
using namespace std;
using namespace qmf::engine;
using namespace qpid::sys;
SequenceManager::SequenceManager() : nextSequence(1) {}
void SequenceManager::setUnsolicitedContext(SequenceContext::Ptr ctx)
{
unsolicitedContext = ctx;
}
uint32_t SequenceManager::reserve(SequenceContext::Ptr ctx)
{
Mutex::ScopedLock _lock(lock);
if (ctx.get() == 0)
ctx = unsolicitedContext;
uint32_t seq = nextSequence;
while (contextMap.find(seq) != contextMap.end())
seq = seq < 0xFFFFFFFF ? seq + 1 : 1;
nextSequence = seq < 0xFFFFFFFF ? seq + 1 : 1;
contextMap[seq] = ctx;
ctx->reserve();
return seq;
}
void SequenceManager::release(uint32_t sequence)
{
Mutex::ScopedLock _lock(lock);
if (sequence == 0) {
if (unsolicitedContext.get() != 0)
unsolicitedContext->release();
return;
}
map<uint32_t, SequenceContext::Ptr>::iterator iter = contextMap.find(sequence);
if (iter != contextMap.end()) {
if (iter->second != 0)
iter->second->release();
contextMap.erase(iter);
}
}
void SequenceManager::releaseAll()
{
Mutex::ScopedLock _lock(lock);
contextMap.clear();
}
void SequenceManager::dispatch(uint8_t opcode, uint32_t sequence, const string& routingKey, qpid::framing::Buffer& buffer)
{
Mutex::ScopedLock _lock(lock);
bool done;
if (sequence == 0) {
if (unsolicitedContext.get() != 0) {
done = unsolicitedContext->handleMessage(opcode, sequence, routingKey, buffer);
if (done)
unsolicitedContext->release();
}
return;
}
map<uint32_t, SequenceContext::Ptr>::iterator iter = contextMap.find(sequence);
if (iter != contextMap.end()) {
if (iter->second != 0) {
done = iter->second->handleMessage(opcode, sequence, routingKey, buffer);
if (done) {
iter->second->release();
contextMap.erase(iter);
}
}
}
}
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