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-rw-r--r--qpid/cpp/lib/common/framing/AMQFrame.cpp138
1 files changed, 138 insertions, 0 deletions
diff --git a/qpid/cpp/lib/common/framing/AMQFrame.cpp b/qpid/cpp/lib/common/framing/AMQFrame.cpp
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+++ b/qpid/cpp/lib/common/framing/AMQFrame.cpp
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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 <AMQFrame.h>
+#include <QpidError.h>
+
+using namespace qpid::framing;
+
+// This only works as a static as the version is currently fixed to 8.0
+// TODO: When the class is version-aware this will need to change
+AMQP_MethodVersionMap AMQFrame::versionMap(8,0);
+
+// AMQP version management change - kpvdr 2-11-17
+// TODO: Make this class version-aware
+AMQFrame::AMQFrame() {}
+
+// AMQP version management change - kpvdr 2006-11-17
+// TODO: Make this class version-aware
+AMQFrame::AMQFrame(u_int16_t _channel, AMQBody* _body) :
+channel(_channel), body(_body)
+{}
+
+// AMQP version management change - kpvdr 2006-11-17
+// TODO: Make this class version-aware
+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 AMQFrame::createMethodBody(Buffer& buffer){
+ u_int16_t classId = buffer.getShort();
+ u_int16_t methodId = buffer.getShort();
+ // AMQP version management change - kpvdr 2006-11-16
+ // TODO: Make this class version-aware and link these hard-wired numbers to that version
+ AMQBody::shared_ptr body(versionMap.createMethodBody(classId, methodId, 8, 0));
+ // Origianl stmt:
+ // 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_int32_t bufSize = decodeHead(buffer);
+
+ if(buffer.available() < bufSize + 1){
+ buffer.restore();
+ return false;
+ }
+ decodeBody(buffer, bufSize);
+ 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 bufSize)
+{
+ 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, bufSize);
+}
+
+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;
+}
+