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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 <boost/format.hpp>
#include "AMQFrame.h"
#include "qpid/QpidError.h"
#include "AMQMethodBody.h"
namespace qpid {
namespace framing {
AMQP_MethodVersionMap AMQFrame::versionMap;
AMQFrame::AMQFrame(ProtocolVersion _version)
: channel(0), type(0), version(_version)
{
assert(version != ProtocolVersion(0,0));
}
AMQFrame::AMQFrame(ProtocolVersion _version, uint16_t _channel, AMQBody* _body) : channel(_channel), body(_body),version(_version) {}
AMQFrame::AMQFrame(ProtocolVersion _version, uint16_t _channel, const AMQBody::shared_ptr& _body) :
channel(_channel), body(_body), version(_version)
{}
AMQFrame::~AMQFrame() {}
void AMQFrame::encode(Buffer& buffer)
{
buffer.putOctet(body->type());
buffer.putShort(channel);
buffer.putLong(body->size());
body->encode(buffer);
buffer.putOctet(0xCE);
}
uint32_t AMQFrame::size() const{
assert(body.get());
return 1/*type*/ + 2/*channel*/ + 4/*body size*/ + body->size()
+ 1/*0xCE*/;
}
bool AMQFrame::decode(Buffer& buffer)
{
if(buffer.available() < 7)
return false;
buffer.record();
uint32_t frameSize = decodeHead(buffer);
if(buffer.available() < frameSize + 1){
buffer.restore();
return false;
}
decodeBody(buffer, frameSize);
uint8_t end = buffer.getOctet();
if(end != 0xCE) THROW_QPID_ERROR(FRAMING_ERROR, "Frame end not found");
return true;
}
uint32_t AMQFrame::decodeHead(Buffer& buffer){
type = buffer.getOctet();
channel = buffer.getShort();
return buffer.getLong();
}
void AMQFrame::decodeBody(Buffer& buffer, uint32_t size)
{
switch(type)
{
case METHOD_BODY:
body = AMQMethodBody::create(versionMap, version, buffer);
break;
case HEADER_BODY:
body = AMQBody::shared_ptr(new AMQHeaderBody());
break;
case CONTENT_BODY:
body = AMQBody::shared_ptr(new AMQContentBody());
break;
case HEARTBEAT_BODY:
body = AMQBody::shared_ptr(new AMQHeartbeatBody());
break;
default:
THROW_QPID_ERROR(
FRAMING_ERROR,
boost::format("Unknown frame type %d") % type);
}
body->decode(buffer, size);
}
std::ostream& operator<<(std::ostream& out, const AMQFrame& t)
{
out << "Frame[channel=" << t.channel << "; ";
if (t.body.get() == 0)
out << "empty";
else
out << *t.body;
out << "]";
return out;
}
}} // namespace qpid::framing
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