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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 "qpid/broker/ThresholdAlerts.h"
#include "qpid/broker/Queue.h"
#include "qpid/broker/Message.h"
#include "qpid/log/Statement.h"
#include "qpid/management/ManagementAgent.h"
#include "qmf/org/apache/qpid/broker/EventQueueThresholdCrossedUpward.h"
#include "qmf/org/apache/qpid/broker/EventQueueThresholdCrossedDownward.h"
#include "qmf/org/apache/qpid/broker/EventQueueThresholdExceeded.h"
namespace qpid {
namespace broker {
ThresholdAlerts::ThresholdAlerts(const std::string& n,
qpid::management::ManagementAgent& a,
const uint32_t ctu,
const uint32_t ctd,
const uint64_t stu,
const uint64_t std,
const bool bw)
: name(n), agent(a),
countThreshold(ctu), countThresholdDown(ctd),
sizeThreshold(stu), sizeThresholdDown(std),
count(0), size(0), countGoingUp(true), sizeGoingUp(true), backwardCompat(bw) {}
void ThresholdAlerts::enqueued(const Message& m)
{
size += m.getMessageSize();
++count;
if (sizeGoingUp && sizeThreshold && size >= sizeThreshold) {
sizeGoingUp = false;
agent.raiseEvent(qmf::org::apache::qpid::broker::EventQueueThresholdCrossedUpward(name, count, size));
if (backwardCompat)
agent.raiseEvent(qmf::org::apache::qpid::broker::EventQueueThresholdExceeded(name, count, size));
}
if (countGoingUp && countThreshold && count >= countThreshold) {
countGoingUp = false;
agent.raiseEvent(qmf::org::apache::qpid::broker::EventQueueThresholdCrossedUpward(name, count, size));
if (backwardCompat)
agent.raiseEvent(qmf::org::apache::qpid::broker::EventQueueThresholdExceeded(name, count, size));
}
}
void ThresholdAlerts::dequeued(const Message& m)
{
size -= m.getMessageSize();
--count;
if (!sizeGoingUp && sizeThreshold && size <= sizeThresholdDown) {
sizeGoingUp = true;
agent.raiseEvent(qmf::org::apache::qpid::broker::EventQueueThresholdCrossedDownward(name, count, size));
}
if (!countGoingUp && countThreshold && count <= countThresholdDown) {
countGoingUp = true;
agent.raiseEvent(qmf::org::apache::qpid::broker::EventQueueThresholdCrossedDownward(name, count, size));
}
}
void ThresholdAlerts::observe(Queue& queue, qpid::management::ManagementAgent& agent,
const uint64_t ctu,
const uint64_t _ctd,
const uint64_t stu,
const uint64_t _std)
{
if (ctu || stu) {
uint64_t ctd = (_ctd == 0 || _ctd >= ctu) ? ctu >> 1 : _ctd;
uint64_t std = (_std == 0 || _std >= stu) ? stu >> 1 : _std;
boost::shared_ptr<QueueObserver> observer(
new ThresholdAlerts(queue.getName(), agent, ctu, ctd, stu, std, (_ctd == 0 && _std == 0))
);
queue.getObservers().add(observer);
}
}
void ThresholdAlerts::observe(Queue& queue, qpid::management::ManagementAgent& agent,
const QueueSettings& settings, uint16_t limitRatio)
{
//If no explicit threshold settings were given use specified
//percentage of any limit from the policy.
uint32_t countThreshold = settings.alertThreshold.hasCount() ? settings.alertThreshold.getCount() : (settings.maxDepth.getCount()*limitRatio/100);
uint32_t sizeThreshold = settings.alertThreshold.hasSize() ? settings.alertThreshold.getSize() : (settings.maxDepth.getSize()*limitRatio/100);
uint32_t countThresholdDown = settings.alertThresholdDown.hasCount() ? settings.alertThresholdDown.getCount() : 0;
uint32_t sizeThresholdDown = settings.alertThresholdDown.hasSize() ? settings.alertThresholdDown.getSize() : 0;
observe(queue, agent, countThreshold, countThresholdDown , sizeThreshold, sizeThresholdDown);
}
}}
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