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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.
*/
/**
* \file TxnHandleImpl.cpp
*/
#include "TxnHandleImpl.h"
#include "qpid/Exception.h"
#include "qpid/broker/TxnBuffer.h"
#include "qpid/log/Statement.h"
#include <uuid/uuid.h>
namespace qpid {
namespace asyncStore {
TxnHandleImpl::TxnHandleImpl() :
m_tpcFlag(false),
m_asyncOpCnt(0UL),
m_txnBuffer(0)
{
createLocalXid();
}
TxnHandleImpl::TxnHandleImpl(qpid::broker::TxnBuffer* tb) :
m_tpcFlag(false),
m_asyncOpCnt(0UL),
m_txnBuffer(tb)
{
createLocalXid();
}
TxnHandleImpl::TxnHandleImpl(const std::string& xid) :
m_xid(xid),
m_tpcFlag(!xid.empty()),
m_asyncOpCnt(0UL),
m_txnBuffer(0)
{
if (m_xid.empty()) {
createLocalXid();
}
}
TxnHandleImpl::TxnHandleImpl(const std::string& xid,
qpid::broker::TxnBuffer* tb) :
m_xid(xid),
m_tpcFlag(!xid.empty()),
m_asyncOpCnt(0UL),
m_txnBuffer(tb)
{
if (m_xid.empty()) {
createLocalXid();
}
}
TxnHandleImpl::~TxnHandleImpl()
{}
const std::string&
TxnHandleImpl::getXid() const
{
return m_xid;
}
bool
TxnHandleImpl::is2pc() const
{
return m_tpcFlag;
}
void
TxnHandleImpl::incrOpCnt()
{
qpid::sys::ScopedLock<qpid::sys::Mutex> l(m_asyncOpCntMutex);
++m_asyncOpCnt;
}
void
TxnHandleImpl::decrOpCnt()
{
qpid::sys::ScopedLock<qpid::sys::Mutex> l(m_asyncOpCntMutex);
if (m_asyncOpCnt == 0UL) {
throw qpid::Exception("Transaction async operation count underflow");
}
if (--m_asyncOpCnt == 0UL && m_txnBuffer) {
m_txnBuffer->asyncLocalCommit();
}
}
// private
void
TxnHandleImpl::createLocalXid()
{
uuid_t uuid;
// TODO: This call might not be thread safe - Valgrind's helgrind tool emits warnings for this:
::uuid_generate_random(uuid);
char uuidStr[37]; // 36-char uuid + trailing '\0'
::uuid_unparse(uuid, uuidStr);
m_xid.assign(uuidStr);
QPID_LOG(debug, "Local XID created: \"" << m_xid << "\"");
}
}} // namespace qpid::asyncStore
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