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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 "qpid/broker/NullMessageStore.h"
#include "qpid/broker/MessageStoreModule.h"
#include "qpid/broker/RecoveryManager.h"
#include "qpid/log/Statement.h"
#include "qpid/framing/reply_exceptions.h"
#include <iostream>
using boost::intrusive_ptr;
namespace qpid{
namespace broker{
const std::string nullxid = "";
class SimpleDummyCtxt : public TransactionContext {};
class DummyCtxt : public TPCTransactionContext
{
const std::string xid;
public:
DummyCtxt(const std::string& _xid) : xid(_xid) {}
static std::string getXid(TransactionContext& ctxt)
{
DummyCtxt* c(dynamic_cast<DummyCtxt*>(&ctxt));
return c ? c->xid : nullxid;
}
};
NullMessageStore::NullMessageStore() : nextPersistenceId(1) {}
bool NullMessageStore::init(const Options* /*options*/) {return true;}
void NullMessageStore::truncateInit(const bool /*pushDownStoreFiles*/) {}
void NullMessageStore::create(PersistableQueue& queue, const framing::FieldTable& /*args*/)
{
queue.setPersistenceId(nextPersistenceId++);
}
void NullMessageStore::destroy(PersistableQueue&) {}
void NullMessageStore::create(const PersistableExchange& exchange, const framing::FieldTable& /*args*/)
{
exchange.setPersistenceId(nextPersistenceId++);
}
void NullMessageStore::destroy(const PersistableExchange& ) {}
void NullMessageStore::bind(const PersistableExchange&, const PersistableQueue&, const std::string&, const framing::FieldTable&){}
void NullMessageStore::unbind(const PersistableExchange&, const PersistableQueue&, const std::string&, const framing::FieldTable&){}
void NullMessageStore::create(const PersistableConfig& config)
{
config.setPersistenceId(nextPersistenceId++);
}
void NullMessageStore::destroy(const PersistableConfig&) {}
void NullMessageStore::recover(RecoveryManager&) {}
void NullMessageStore::stage(const intrusive_ptr<PersistableMessage>&) {}
void NullMessageStore::destroy(PersistableMessage&) {}
void NullMessageStore::appendContent(const intrusive_ptr<const PersistableMessage>&, const std::string&) {}
void NullMessageStore::loadContent(const qpid::broker::PersistableQueue&,
const intrusive_ptr<const PersistableMessage>&,
std::string&, uint64_t, uint32_t)
{
throw qpid::framing::InternalErrorException("Can't load content; persistence not enabled");
}
void NullMessageStore::enqueue(TransactionContext*,
const intrusive_ptr<PersistableMessage>& msg,
const PersistableQueue&)
{
msg->enqueueComplete();
}
void NullMessageStore::dequeue(TransactionContext*,
const intrusive_ptr<PersistableMessage>& msg,
const PersistableQueue&)
{
msg->dequeueComplete();
}
void NullMessageStore::flush(const qpid::broker::PersistableQueue&) {}
uint32_t NullMessageStore::outstandingQueueAIO(const PersistableQueue& ) {
return 0;
}
std::auto_ptr<TransactionContext> NullMessageStore::begin()
{
return std::auto_ptr<TransactionContext>(new SimpleDummyCtxt());
}
std::auto_ptr<TPCTransactionContext> NullMessageStore::begin(const std::string& xid)
{
return std::auto_ptr<TPCTransactionContext>(new DummyCtxt(xid));
}
void NullMessageStore::prepare(TPCTransactionContext& ctxt)
{
qpid::sys::ScopedLock<qpid::sys::Mutex> l(lock);
prepared.insert(DummyCtxt::getXid(ctxt));
}
void NullMessageStore::commit(TransactionContext& ctxt)
{
qpid::sys::ScopedLock<qpid::sys::Mutex> l(lock);
prepared.erase(DummyCtxt::getXid(ctxt));
}
void NullMessageStore::abort(TransactionContext& ctxt)
{
qpid::sys::ScopedLock<qpid::sys::Mutex> l(lock);
prepared.erase(DummyCtxt::getXid(ctxt));
}
void NullMessageStore::collectPreparedXids(std::set<std::string>& out)
{
qpid::sys::ScopedLock<qpid::sys::Mutex> l(lock);
out.insert(prepared.begin(), prepared.end());
}
bool NullMessageStore::isNull() const
{
return true;
}
bool NullMessageStore::isNullStore(const MessageStore* store)
{
const MessageStoreModule* wrapper = dynamic_cast<const MessageStoreModule*>(store);
if (wrapper) {
return wrapper->isNull();
} else {
const NullMessageStore* test = dynamic_cast<const NullMessageStore*>(store);
return test && test->isNull();
}
}
}} // namespace qpid::broker
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