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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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 "AMQFrame.h"
#include "QpidError.h"
using namespace qpid::framing;
AMQFrame::AMQFrame(){}
AMQFrame::AMQFrame(u_int16_t _channel, AMQBody* _body) : channel(_channel), body(_body){}
AMQFrame::AMQFrame(u_int16_t _channel, AMQBody::shared_ptr& _body) : channel(_channel), body(_body){}
AMQFrame::~AMQFrame(){
}
u_int16_t AMQFrame::getChannel(){
return channel;
}
AMQBody::shared_ptr& AMQFrame::getBody(){
return body;
}
void AMQFrame::encode(Buffer& buffer)
{
buffer.putOctet(body->type());
buffer.putShort(channel);
buffer.putLong(body->size());
body->encode(buffer);
buffer.putOctet(0xCE);
}
AMQBody::shared_ptr createMethodBody(Buffer& buffer){
u_int16_t classId = buffer.getShort();
u_int16_t methodId = buffer.getShort();
AMQBody::shared_ptr body(createAMQMethodBody(classId, methodId));
return body;
}
u_int32_t AMQFrame::size() const{
if(!body.get()) THROW_QPID_ERROR(INTERNAL_ERROR, "Attempt to get size of frame with no body set!");
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();
u_int8_t type = buffer.getOctet();
channel = buffer.getShort();
u_int32_t size = buffer.getLong();
if(buffer.available() < size + 1){
buffer.restore();
return false;
}
switch(type)
{
case METHOD_BODY:
body = createMethodBody(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:
string msg("Unknown body type: ");
msg += type;
THROW_QPID_ERROR(FRAMING_ERROR, msg);
}
body->decode(buffer, size);
u_int8_t end = buffer.getOctet();
if(end != 0xCE) THROW_QPID_ERROR(FRAMING_ERROR, "Frame end not found");
return true;
}
u_int32_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 = createMethodBody(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:
string msg("Unknown body type: ");
msg += type;
THROW_QPID_ERROR(FRAMING_ERROR, msg);
}
body->decode(buffer, size);
}
std::ostream& qpid::framing::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;
}
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