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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 "SendContent.h"
qpid::framing::SendContent::SendContent(FrameHandler& h, uint16_t mfs, uint efc) : handler(h),
maxFrameSize(mfs),
expectedFrameCount(efc), frameCount(0) {}
void qpid::framing::SendContent::operator()(const AMQFrame& f)
{
bool first = frameCount == 0;
bool last = ++frameCount == expectedFrameCount;
/*end of frame marker is included in frameOverhead() but not in
real frame size, hence substract -1 from frameOverhead()*/
uint16_t maxContentSize = maxFrameSize - (AMQFrame::frameOverhead() - 1);
const AMQContentBody* body(f.castBody<AMQContentBody>());
if (body->size() > maxContentSize) {
uint32_t offset = 0;
for (int chunk = body->size() / maxContentSize; chunk > 0; chunk--) {
sendFragment(*body, offset, maxContentSize, first && offset == 0, last && offset + maxContentSize == body->size());
offset += maxContentSize;
}
uint32_t remainder = body->size() % maxContentSize;
if (remainder) {
sendFragment(*body, offset, remainder, first && offset == 0, last);
}
} else {
AMQFrame copy(f);
setFlags(copy, first, last);
handler.handle(copy);
}
}
void qpid::framing::SendContent::sendFragment(const AMQContentBody& body, uint32_t offset, uint16_t size, bool first, bool last) const
{
AMQFrame fragment(in_place<AMQContentBody>(
body.getData().substr(offset, size)));
setFlags(fragment, first, last);
handler.handle(fragment);
}
void qpid::framing::SendContent::setFlags(AMQFrame& f, bool first, bool last) const
{
f.setBof(false);
f.setBos(first);
f.setEof(true);//content is always the last segment
f.setEos(last);
}
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