/*
|
* The contents of this file are subject to the terms of the Common Development and
|
* Distribution License (the License). You may not use this file except in compliance with the
|
* License.
|
*
|
* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
|
* specific language governing permission and limitations under the License.
|
*
|
* When distributing Covered Software, include this CDDL Header Notice in each file and include
|
* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
|
* Header, with the fields enclosed by brackets [] replaced by your own identifying
|
* information: "Portions Copyright [year] [name of copyright owner]".
|
*
|
* Copyright 2006-2010 Sun Microsystems, Inc.
|
* Portions Copyright 2014-2016 ForgeRock AS.
|
*/
|
package org.opends.server.monitors;
|
|
import java.util.concurrent.TimeUnit;
|
|
import org.forgerock.opendj.config.server.ConfigException;
|
import org.opends.server.api.MonitorData;
|
import org.forgerock.opendj.server.config.server.MonitorProviderCfg;
|
import org.opends.server.api.MonitorProvider;
|
import org.opends.server.extensions.TraditionalWorkQueue;
|
import org.opends.server.types.InitializationException;
|
|
/**
|
* This class defines a Directory Server monitor that can be used to provide
|
* information about the state of the work queue.
|
*/
|
public class TraditionalWorkQueueMonitor
|
extends MonitorProvider<MonitorProviderCfg>
|
implements Runnable
|
{
|
/** The name to use for the monitor attribute that provides the current request backlog. */
|
public static final String ATTR_CURRENT_BACKLOG = "currentRequestBacklog";
|
/** The name to use for the monitor attribute that provides the average request backlog. */
|
public static final String ATTR_AVERAGE_BACKLOG = "averageRequestBacklog";
|
/**
|
* The name to use for the monitor attribute that provides the maximum
|
* observed request backlog.
|
*/
|
public static final String ATTR_MAX_BACKLOG = "maxRequestBacklog";
|
/**
|
* The name to use for the monitor attribute that provides the total number of
|
* operations submitted.
|
*/
|
public static final String ATTR_OPS_SUBMITTED = "requestsSubmitted";
|
|
/**
|
* The name to use for the monitor attribute that provides the total number of
|
* requests that have been rejected because the work queue was full.
|
*/
|
public static final String ATTR_OPS_REJECTED_QUEUE_FULL = "requestsRejectedDueToQueueFull";
|
|
|
/** The maximum backlog observed by polling the queue. */
|
private int maxBacklog;
|
/** The total number of times the backlog has been polled. */
|
private long numPolls;
|
/** The total backlog observed from periodic polling. */
|
private long totalBacklog;
|
/** The traditional work queue instance with which this monitor is associated. */
|
private TraditionalWorkQueue workQueue;
|
|
|
/**
|
* Initializes this monitor provider. Note that no initialization should be
|
* done here, since it should be performed in the
|
* <CODE>initializeMonitorProvider</CODE> class.
|
*
|
* @param workQueue The work queue with which this monitor is associated.
|
*/
|
public TraditionalWorkQueueMonitor(TraditionalWorkQueue workQueue)
|
{
|
this.workQueue = workQueue;
|
}
|
|
|
|
/** {@inheritDoc} */
|
@Override
|
public void initializeMonitorProvider(MonitorProviderCfg configuration)
|
throws ConfigException, InitializationException
|
{
|
maxBacklog = 0;
|
totalBacklog = 0;
|
numPolls = 0;
|
scheduleUpdate(this, 0, 10, TimeUnit.SECONDS);
|
}
|
|
|
|
/**
|
* Retrieves the name of this monitor provider. It should be unique among all
|
* monitor providers, including all instances of the same monitor provider.
|
*
|
* @return The name of this monitor provider.
|
*/
|
@Override
|
public String getMonitorInstanceName()
|
{
|
return "Work Queue";
|
}
|
|
@Override
|
public void run()
|
{
|
int backlog = workQueue.size();
|
totalBacklog += backlog;
|
numPolls++;
|
|
if (backlog > maxBacklog)
|
{
|
maxBacklog = backlog;
|
}
|
}
|
|
@Override
|
public MonitorData getMonitorData()
|
{
|
int backlog = workQueue.size();
|
totalBacklog += backlog;
|
numPolls++;
|
if (backlog > maxBacklog)
|
{
|
maxBacklog = backlog;
|
}
|
long averageBacklog = (long) (1.0 * totalBacklog / numPolls);
|
|
final MonitorData monitorAttrs = new MonitorData(5);
|
monitorAttrs.add(ATTR_CURRENT_BACKLOG, backlog);
|
monitorAttrs.add(ATTR_AVERAGE_BACKLOG, averageBacklog);
|
monitorAttrs.add(ATTR_MAX_BACKLOG, maxBacklog);
|
monitorAttrs.add(ATTR_OPS_SUBMITTED, workQueue.getOpsSubmitted());
|
monitorAttrs.add(ATTR_OPS_REJECTED_QUEUE_FULL, workQueue.getOpsRejectedDueToQueueFull());
|
return monitorAttrs;
|
}
|
}
|
