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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/LazyLoadedContent.h"
using namespace qpid::broker;
using namespace qpid::framing;
LazyLoadedContent::LazyLoadedContent(MessageStore* const _store, u_int64_t _msgId, u_int64_t _expectedSize) :
store(_store), msgId(_msgId), expectedSize(_expectedSize) {}
void LazyLoadedContent::add(AMQContentBody::shared_ptr data)
{
store->appendContent(msgId, data->getData());
}
u_int32_t LazyLoadedContent::size()
{
return 0;//all content is written as soon as it is added
}
void LazyLoadedContent::send(OutputHandler* out, int channel, u_int32_t framesize)
{
if (expectedSize > framesize) {
for (u_int64_t offset = 0; offset < expectedSize; offset += framesize) {
u_int64_t remaining = expectedSize - offset;
string data;
store->loadContent(msgId, data, offset, remaining > framesize ? framesize : remaining);
out->send(new AMQFrame(channel, new AMQContentBody(data)));
}
} else {
string data;
store->loadContent(msgId, data, 0, expectedSize);
out->send(new AMQFrame(channel, new AMQContentBody(data)));
}
}
void LazyLoadedContent::encode(Buffer&)
{
//do nothing as all content is written as soon as it is added
}
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