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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 <RecoveryManagerImpl.h>
#include "BrokerMessage.h"
#include "BrokerMessageMessage.h"
#include "BrokerQueue.h"
using namespace qpid;
using namespace qpid::broker;
using boost::dynamic_pointer_cast;
static const uint8_t BASIC = 1;
static const uint8_t MESSAGE = 2;
RecoveryManagerImpl::RecoveryManagerImpl(QueueRegistry& _queues, ExchangeRegistry& _exchanges, uint64_t _stagingThreshold)
: queues(_queues), exchanges(_exchanges), stagingThreshold(_stagingThreshold) {}
RecoveryManagerImpl::~RecoveryManagerImpl() {}
class RecoverableMessageImpl : public RecoverableMessage
{
Message::shared_ptr msg;
const uint64_t stagingThreshold;
public:
RecoverableMessageImpl(Message::shared_ptr& _msg, uint64_t _stagingThreshold)
: msg(_msg), stagingThreshold(_stagingThreshold) {}
~RecoverableMessageImpl() {};
bool loadContent(uint64_t available);
void decodeContent(framing::Buffer& buffer);
void recover(Queue::shared_ptr queue);
};
class RecoverableQueueImpl : public RecoverableQueue
{
Queue::shared_ptr queue;
public:
RecoverableQueueImpl(Queue::shared_ptr& _queue) : queue(_queue) {}
~RecoverableQueueImpl() {};
void recover(RecoverableMessage::shared_ptr msg);
};
void RecoveryManagerImpl::recoverExchange(framing::Buffer&)
{
//TODO
}
RecoverableQueue::shared_ptr RecoveryManagerImpl::recoverQueue(framing::Buffer& buffer)
{
Queue::shared_ptr queue = Queue::decode(queues, buffer);
try {
Exchange::shared_ptr exchange = exchanges.getDefault();
if (exchange) {
exchange->bind(queue, queue->getName(), 0);
}
} catch (ChannelException& e) {
//assume no default exchange has been declared
}
return RecoverableQueue::shared_ptr(new RecoverableQueueImpl(queue));
}
RecoverableMessage::shared_ptr RecoveryManagerImpl::recoverMessage(framing::Buffer& buffer)
{
buffer.record();
//peek at type:
Message::shared_ptr message(decodeMessageType(buffer) == MESSAGE ?
((Message*) new MessageMessage()) :
((Message*) new BasicMessage()));
buffer.restore();
message->decodeHeader(buffer);
return RecoverableMessage::shared_ptr(new RecoverableMessageImpl(message, stagingThreshold));
}
void RecoveryManagerImpl::recoveryComplete()
{
//TODO (finalise binding setup etc)
}
uint8_t RecoveryManagerImpl::decodeMessageType(framing::Buffer& buffer)
{
return buffer.getOctet();
}
void RecoveryManagerImpl::encodeMessageType(const Message& msg, framing::Buffer& buffer)
{
buffer.putOctet(dynamic_cast<const MessageMessage*>(&msg) ? MESSAGE : BASIC);
}
uint32_t RecoveryManagerImpl::encodedMessageTypeSize()
{
return 1;
}
bool RecoverableMessageImpl::loadContent(uint64_t available)
{
return !stagingThreshold || available < stagingThreshold;
}
void RecoverableMessageImpl::decodeContent(framing::Buffer& buffer)
{
msg->decodeContent(buffer);
}
void RecoverableMessageImpl::recover(Queue::shared_ptr queue)
{
queue->recover(msg);
}
void RecoverableQueueImpl::recover(RecoverableMessage::shared_ptr msg)
{
dynamic_pointer_cast<RecoverableMessageImpl>(msg)->recover(queue);
}
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