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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 "ManagementAgent.h"
#include "DeliverableMessage.h"
#include "qpid/log/Statement.h"
#include <qpid/broker/Message.h>
#include <qpid/broker/MessageDelivery.h>
#include <qpid/framing/AMQFrame.h>
using namespace qpid::framing;
using namespace qpid::broker;
using namespace qpid::sys;
ManagementAgent::ManagementAgent (uint16_t _interval) : interval (_interval)
{
timer.add (TimerTask::shared_ptr (new Periodic(*this, interval)));
}
void ManagementAgent::setExchange (Exchange::shared_ptr _exchange)
{
exchange = _exchange;
}
void ManagementAgent::addObject (ManagementObject::shared_ptr object)
{
managementObjects.push_back (object);
QPID_LOG(info, "Management Object Added");
}
ManagementAgent::Periodic::Periodic (ManagementAgent& _agent, uint32_t _seconds)
: TimerTask (qpid::sys::Duration (_seconds * qpid::sys::TIME_SEC)), agent(_agent) {}
void ManagementAgent::Periodic::fire ()
{
agent.timer.add (TimerTask::shared_ptr (new Periodic (agent, agent.interval)));
agent.PeriodicProcessing ();
}
void ManagementAgent::clientAdded (void)
{
for (ManagementObjectList::iterator iter = managementObjects.begin ();
iter != managementObjects.end ();
iter++)
{
ManagementObject::shared_ptr object = *iter;
object->setAllChanged ();
object->setSchemaNeeded ();
}
}
void ManagementAgent::PeriodicProcessing (void)
{
#define BUFSIZE 65536
#define THRESHOLD 16384
char msgChars[BUFSIZE];
Buffer msgBuffer (msgChars, BUFSIZE);
uint32_t contentSize;
if (managementObjects.empty ())
return;
Message::shared_ptr msg (new Message ());
// Build the magic number for the management message.
msgBuffer.putOctet ('A');
msgBuffer.putOctet ('M');
msgBuffer.putOctet ('0');
msgBuffer.putOctet ('1');
for (ManagementObjectList::iterator iter = managementObjects.begin ();
iter != managementObjects.end ();
iter++)
{
ManagementObject::shared_ptr object = *iter;
if (object->getSchemaNeeded ())
{
uint32_t startAvail = msgBuffer.available ();
uint32_t recordLength;
msgBuffer.putOctet ('S'); // opcode = Schema Record
msgBuffer.putOctet (0); // content-class = N/A
msgBuffer.putShort (object->getObjectType ());
msgBuffer.record (); // Record the position of the length field
msgBuffer.putLong (0xFFFFFFFF); // Placeholder for length
object->writeSchema (msgBuffer);
recordLength = startAvail - msgBuffer.available ();
msgBuffer.restore (true); // Restore pointer to length field
msgBuffer.putLong (recordLength);
msgBuffer.restore (); // Re-restore to get to the end of the buffer
}
if (object->getConfigChanged ())
{
uint32_t startAvail = msgBuffer.available ();
uint32_t recordLength;
msgBuffer.putOctet ('C'); // opcode = Content Record
msgBuffer.putOctet ('C'); // content-class = Configuration
msgBuffer.putShort (object->getObjectType ());
msgBuffer.record (); // Record the position of the length field
msgBuffer.putLong (0xFFFFFFFF); // Placeholder for length
object->writeConfig (msgBuffer);
recordLength = startAvail - msgBuffer.available ();
msgBuffer.restore (true); // Restore pointer to length field
msgBuffer.putLong (recordLength);
msgBuffer.restore (); // Re-restore to get to the end of the buffer
}
if (object->getInstChanged ())
{
uint32_t startAvail = msgBuffer.available ();
uint32_t recordLength;
msgBuffer.putOctet ('C'); // opcode = Content Record
msgBuffer.putOctet ('I'); // content-class = Instrumentation
msgBuffer.putShort (object->getObjectType ());
msgBuffer.record (); // Record the position of the length field
msgBuffer.putLong (0xFFFFFFFF); // Placeholder for length
object->writeInstrumentation (msgBuffer);
recordLength = startAvail - msgBuffer.available ();
msgBuffer.restore (true); // Restore pointer to length field
msgBuffer.putLong (recordLength);
msgBuffer.restore (); // Re-restore to get to the end of the buffer
}
if (object->isDeleted ())
{
managementObjects.remove (object);
QPID_LOG (debug, "Management Object Removed");
}
// Temporary protection against buffer overrun.
// This needs to be replaced with frame fragmentation.
if (msgBuffer.available () < THRESHOLD)
break;
}
msgBuffer.putOctet ('X'); // End-of-message
msgBuffer.putOctet (0);
msgBuffer.putShort (0);
msgBuffer.putLong (8);
contentSize = BUFSIZE - msgBuffer.available ();
msgBuffer.reset ();
AMQFrame method (0, MessageTransferBody(ProtocolVersion(),
0, "qpid.management", 0, 0));
AMQFrame header (0, AMQHeaderBody());
AMQFrame content;
content.setBody(AMQContentBody());
content.castBody<AMQContentBody>()->decode(msgBuffer, contentSize);
method.setEof (false);
header.setBof (false);
header.setEof (false);
content.setBof (false);
msg->getFrames().append(method);
msg->getFrames().append(header);
MessageProperties* props = msg->getFrames().getHeaders()->get<MessageProperties>(true);
props->setContentLength(contentSize);
//msg->getFrames().getHeaders()->get<DeliveryProperties>(true)->setRoutingKey("mgmt");
msg->getFrames().append(content);
DeliverableMessage deliverable (msg);
exchange->route (deliverable, "mgmt", 0);
}
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