author | rriggs |
Tue, 12 Nov 2013 14:03:28 -0500 | |
changeset 21656 | d4c777ccb1db |
parent 5506 | 202f599c92aa |
child 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 10 |
* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
|
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* questions. |
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2 | 24 |
*/ |
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||
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package javax.management.monitor; |
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import static com.sun.jmx.defaults.JmxProperties.MONITOR_LOGGER; |
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import com.sun.jmx.mbeanserver.GetPropertyAction; |
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import com.sun.jmx.mbeanserver.Introspector; |
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import java.io.IOException; |
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import java.security.AccessControlContext; |
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import java.security.AccessController; |
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import java.security.PrivilegedAction; |
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import java.security.ProtectionDomain; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.WeakHashMap; |
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import java.util.concurrent.CopyOnWriteArrayList; |
40 |
import java.util.concurrent.Executors; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.LinkedBlockingQueue; |
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import java.util.concurrent.ScheduledExecutorService; |
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import java.util.concurrent.ScheduledFuture; |
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import java.util.concurrent.ThreadFactory; |
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import java.util.concurrent.ThreadPoolExecutor; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.atomic.AtomicLong; |
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import java.util.logging.Level; |
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import javax.management.AttributeNotFoundException; |
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import javax.management.InstanceNotFoundException; |
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import javax.management.IntrospectionException; |
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import javax.management.MBeanAttributeInfo; |
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import javax.management.MBeanException; |
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import javax.management.MBeanInfo; |
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import javax.management.MBeanRegistration; |
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import javax.management.MBeanServer; |
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import javax.management.MBeanServerConnection; |
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import javax.management.NotificationBroadcasterSupport; |
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import javax.management.ObjectName; |
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import javax.management.ReflectionException; |
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import static javax.management.monitor.MonitorNotification.*; |
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||
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/** |
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* Defines the part common to all monitor MBeans. |
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* A monitor MBean monitors values of an attribute common to a set of observed |
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* MBeans. The observed attribute is monitored at intervals specified by the |
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* granularity period. A gauge value (derived gauge) is derived from the values |
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* of the observed attribute. |
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* |
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* |
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* @since 1.5 |
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*/ |
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public abstract class Monitor |
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extends NotificationBroadcasterSupport |
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implements MonitorMBean, MBeanRegistration { |
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/* |
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* ------------------------------------------ |
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* PACKAGE CLASSES |
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* ------------------------------------------ |
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*/ |
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static class ObservedObject { |
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public ObservedObject(ObjectName observedObject) { |
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this.observedObject = observedObject; |
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} |
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public final ObjectName getObservedObject() { |
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return observedObject; |
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} |
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public final synchronized int getAlreadyNotified() { |
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return alreadyNotified; |
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} |
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public final synchronized void setAlreadyNotified(int alreadyNotified) { |
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this.alreadyNotified = alreadyNotified; |
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} |
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public final synchronized Object getDerivedGauge() { |
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return derivedGauge; |
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} |
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public final synchronized void setDerivedGauge(Object derivedGauge) { |
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this.derivedGauge = derivedGauge; |
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} |
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public final synchronized long getDerivedGaugeTimeStamp() { |
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return derivedGaugeTimeStamp; |
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} |
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public final synchronized void setDerivedGaugeTimeStamp( |
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long derivedGaugeTimeStamp) { |
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this.derivedGaugeTimeStamp = derivedGaugeTimeStamp; |
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} |
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private final ObjectName observedObject; |
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private int alreadyNotified; |
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private Object derivedGauge; |
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private long derivedGaugeTimeStamp; |
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} |
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||
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/* |
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* ------------------------------------------ |
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* PRIVATE VARIABLES |
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* ------------------------------------------ |
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*/ |
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/** |
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* Attribute to observe. |
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*/ |
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private String observedAttribute; |
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/** |
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* Monitor granularity period (in milliseconds). |
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* The default value is set to 10 seconds. |
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*/ |
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private long granularityPeriod = 10000; |
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/** |
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* Monitor state. |
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* The default value is set to <CODE>false</CODE>. |
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*/ |
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private boolean isActive = false; |
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/** |
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* Monitor sequence number. |
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* The default value is set to 0. |
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*/ |
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private final AtomicLong sequenceNumber = new AtomicLong(); |
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||
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/** |
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* Complex type attribute flag. |
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* The default value is set to <CODE>false</CODE>. |
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*/ |
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private boolean isComplexTypeAttribute = false; |
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||
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/** |
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* First attribute name extracted from complex type attribute name. |
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*/ |
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private String firstAttribute; |
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/** |
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* Remaining attribute names extracted from complex type attribute name. |
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*/ |
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private final List<String> remainingAttributes = |
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new CopyOnWriteArrayList<String>(); |
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||
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/** |
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* AccessControlContext of the Monitor.start() caller. |
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*/ |
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private static final AccessControlContext noPermissionsACC = |
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new AccessControlContext( |
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new ProtectionDomain[] {new ProtectionDomain(null, null)}); |
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private volatile AccessControlContext acc = noPermissionsACC; |
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/** |
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* Scheduler Service. |
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*/ |
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177 |
private static final ScheduledExecutorService scheduler = |
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Executors.newSingleThreadScheduledExecutor( |
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new DaemonThreadFactory("Scheduler")); |
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/** |
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* Map containing the thread pool executor per thread group. |
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*/ |
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private static final Map<ThreadPoolExecutor, Void> executors = |
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new WeakHashMap<ThreadPoolExecutor, Void>(); |
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|
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/** |
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* Lock for executors map. |
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*/ |
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private static final Object executorsLock = new Object(); |
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/** |
2 | 193 |
* Maximum Pool Size |
194 |
*/ |
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195 |
private static final int maximumPoolSize; |
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196 |
static { |
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197 |
final String maximumPoolSizeSysProp = "jmx.x.monitor.maximum.pool.size"; |
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198 |
final String maximumPoolSizeStr = AccessController.doPrivileged( |
|
199 |
new GetPropertyAction(maximumPoolSizeSysProp)); |
|
200 |
if (maximumPoolSizeStr == null || |
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201 |
maximumPoolSizeStr.trim().length() == 0) { |
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202 |
maximumPoolSize = 10; |
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203 |
} else { |
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204 |
int maximumPoolSizeTmp = 10; |
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205 |
try { |
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206 |
maximumPoolSizeTmp = Integer.parseInt(maximumPoolSizeStr); |
|
207 |
} catch (NumberFormatException e) { |
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208 |
if (MONITOR_LOGGER.isLoggable(Level.FINER)) { |
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MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
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"<static initializer>", |
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"Wrong value for " + maximumPoolSizeSysProp + |
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" system property", e); |
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MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
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"<static initializer>", |
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maximumPoolSizeSysProp + " defaults to 10"); |
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} |
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217 |
maximumPoolSizeTmp = 10; |
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218 |
} |
|
219 |
if (maximumPoolSizeTmp < 1) { |
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maximumPoolSize = 1; |
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221 |
} else { |
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222 |
maximumPoolSize = maximumPoolSizeTmp; |
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223 |
} |
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} |
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225 |
} |
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||
227 |
/** |
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228 |
* Future associated to the current monitor task. |
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229 |
*/ |
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230 |
private Future<?> monitorFuture; |
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||
232 |
/** |
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233 |
* Scheduler task to be executed by the Scheduler Service. |
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234 |
*/ |
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private final SchedulerTask schedulerTask = new SchedulerTask(); |
2 | 236 |
|
237 |
/** |
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238 |
* ScheduledFuture associated to the current scheduler task. |
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239 |
*/ |
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240 |
private ScheduledFuture<?> schedulerFuture; |
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||
242 |
/* |
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243 |
* ------------------------------------------ |
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244 |
* PROTECTED VARIABLES |
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245 |
* ------------------------------------------ |
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246 |
*/ |
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247 |
||
248 |
/** |
|
249 |
* The amount by which the capacity of the monitor arrays are |
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250 |
* automatically incremented when their size becomes greater than |
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* their capacity. |
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252 |
*/ |
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protected final static int capacityIncrement = 16; |
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||
255 |
/** |
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256 |
* The number of valid components in the vector of observed objects. |
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257 |
* |
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258 |
*/ |
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259 |
protected int elementCount = 0; |
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||
261 |
/** |
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262 |
* Monitor errors that have already been notified. |
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263 |
* @deprecated equivalent to {@link #alreadyNotifieds}[0]. |
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264 |
*/ |
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265 |
@Deprecated |
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266 |
protected int alreadyNotified = 0; |
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267 |
||
268 |
/** |
|
269 |
* <p>Selected monitor errors that have already been notified.</p> |
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270 |
* |
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271 |
* <p>Each element in this array corresponds to an observed object |
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272 |
* in the vector. It contains a bit mask of the flags {@link |
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273 |
* #OBSERVED_OBJECT_ERROR_NOTIFIED} etc, indicating whether the |
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274 |
* corresponding notification has already been sent for the MBean |
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* being monitored.</p> |
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276 |
* |
|
277 |
*/ |
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278 |
protected int alreadyNotifieds[] = new int[capacityIncrement]; |
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279 |
||
280 |
/** |
|
281 |
* Reference to the MBean server. This reference is null when the |
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282 |
* monitor MBean is not registered in an MBean server. This |
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283 |
* reference is initialized before the monitor MBean is registered |
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284 |
* in the MBean server. |
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285 |
* @see #preRegister(MBeanServer server, ObjectName name) |
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286 |
*/ |
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287 |
protected MBeanServer server; |
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288 |
||
289 |
// Flags defining possible monitor errors. |
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290 |
// |
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291 |
||
292 |
/** |
|
293 |
* This flag is used to reset the {@link #alreadyNotifieds |
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294 |
* alreadyNotifieds} monitor attribute. |
|
295 |
*/ |
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296 |
protected static final int RESET_FLAGS_ALREADY_NOTIFIED = 0; |
|
297 |
||
298 |
/** |
|
299 |
* Flag denoting that a notification has occurred after changing |
|
300 |
* the observed object. This flag is used to check that the new |
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301 |
* observed object is registered in the MBean server at the time |
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302 |
* of the first notification. |
|
303 |
*/ |
|
304 |
protected static final int OBSERVED_OBJECT_ERROR_NOTIFIED = 1; |
|
305 |
||
306 |
/** |
|
307 |
* Flag denoting that a notification has occurred after changing |
|
308 |
* the observed attribute. This flag is used to check that the |
|
309 |
* new observed attribute belongs to the observed object at the |
|
310 |
* time of the first notification. |
|
311 |
*/ |
|
312 |
protected static final int OBSERVED_ATTRIBUTE_ERROR_NOTIFIED = 2; |
|
313 |
||
314 |
/** |
|
315 |
* Flag denoting that a notification has occurred after changing |
|
316 |
* the observed object or the observed attribute. This flag is |
|
317 |
* used to check that the observed attribute type is correct |
|
318 |
* (depending on the monitor in use) at the time of the first |
|
319 |
* notification. |
|
320 |
*/ |
|
321 |
protected static final int OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED = 4; |
|
322 |
||
323 |
/** |
|
324 |
* Flag denoting that a notification has occurred after changing |
|
325 |
* the observed object or the observed attribute. This flag is |
|
326 |
* used to notify any exception (except the cases described above) |
|
327 |
* when trying to get the value of the observed attribute at the |
|
328 |
* time of the first notification. |
|
329 |
*/ |
|
330 |
protected static final int RUNTIME_ERROR_NOTIFIED = 8; |
|
331 |
||
332 |
/** |
|
333 |
* This field is retained for compatibility but should not be referenced. |
|
334 |
* |
|
335 |
* @deprecated No replacement. |
|
336 |
*/ |
|
337 |
@Deprecated |
|
338 |
protected String dbgTag = Monitor.class.getName(); |
|
339 |
||
340 |
/* |
|
341 |
* ------------------------------------------ |
|
342 |
* PACKAGE VARIABLES |
|
343 |
* ------------------------------------------ |
|
344 |
*/ |
|
345 |
||
346 |
/** |
|
347 |
* List of ObservedObjects to which the attribute to observe belongs. |
|
348 |
*/ |
|
349 |
final List<ObservedObject> observedObjects = |
|
350 |
new CopyOnWriteArrayList<ObservedObject>(); |
|
351 |
||
352 |
/** |
|
353 |
* Flag denoting that a notification has occurred after changing |
|
354 |
* the threshold. This flag is used to notify any exception |
|
355 |
* related to invalid thresholds settings. |
|
356 |
*/ |
|
357 |
static final int THRESHOLD_ERROR_NOTIFIED = 16; |
|
358 |
||
359 |
/** |
|
360 |
* Enumeration used to keep trace of the derived gauge type |
|
361 |
* in counter and gauge monitors. |
|
362 |
*/ |
|
363 |
enum NumericalType { BYTE, SHORT, INTEGER, LONG, FLOAT, DOUBLE }; |
|
364 |
||
365 |
/** |
|
366 |
* Constant used to initialize all the numeric values. |
|
367 |
*/ |
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static final Integer INTEGER_ZERO = 0; |
2 | 369 |
|
370 |
||
371 |
/* |
|
372 |
* ------------------------------------------ |
|
373 |
* PUBLIC METHODS |
|
374 |
* ------------------------------------------ |
|
375 |
*/ |
|
376 |
||
377 |
/** |
|
378 |
* Allows the monitor MBean to perform any operations it needs |
|
379 |
* before being registered in the MBean server. |
|
380 |
* <P> |
|
381 |
* Initializes the reference to the MBean server. |
|
382 |
* |
|
383 |
* @param server The MBean server in which the monitor MBean will |
|
384 |
* be registered. |
|
385 |
* @param name The object name of the monitor MBean. |
|
386 |
* |
|
387 |
* @return The name of the monitor MBean registered. |
|
388 |
* |
|
389 |
* @exception Exception |
|
390 |
*/ |
|
391 |
public ObjectName preRegister(MBeanServer server, ObjectName name) |
|
392 |
throws Exception { |
|
393 |
||
394 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
395 |
"preRegister(MBeanServer, ObjectName)", |
|
396 |
"initialize the reference on the MBean server"); |
|
397 |
||
398 |
this.server = server; |
|
399 |
return name; |
|
400 |
} |
|
401 |
||
402 |
/** |
|
403 |
* Allows the monitor MBean to perform any operations needed after |
|
404 |
* having been registered in the MBean server or after the |
|
405 |
* registration has failed. |
|
406 |
* <P> |
|
407 |
* Not used in this context. |
|
408 |
*/ |
|
409 |
public void postRegister(Boolean registrationDone) { |
|
410 |
} |
|
411 |
||
412 |
/** |
|
413 |
* Allows the monitor MBean to perform any operations it needs |
|
414 |
* before being unregistered by the MBean server. |
|
415 |
* <P> |
|
416 |
* Stops the monitor. |
|
417 |
* |
|
418 |
* @exception Exception |
|
419 |
*/ |
|
420 |
public void preDeregister() throws Exception { |
|
421 |
||
422 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
423 |
"preDeregister()", "stop the monitor"); |
|
424 |
||
425 |
// Stop the Monitor. |
|
426 |
// |
|
427 |
stop(); |
|
428 |
} |
|
429 |
||
430 |
/** |
|
431 |
* Allows the monitor MBean to perform any operations needed after |
|
432 |
* having been unregistered by the MBean server. |
|
433 |
* <P> |
|
434 |
* Not used in this context. |
|
435 |
*/ |
|
436 |
public void postDeregister() { |
|
437 |
} |
|
438 |
||
439 |
/** |
|
440 |
* Starts the monitor. |
|
441 |
*/ |
|
442 |
public abstract void start(); |
|
443 |
||
444 |
/** |
|
445 |
* Stops the monitor. |
|
446 |
*/ |
|
447 |
public abstract void stop(); |
|
448 |
||
449 |
// GETTERS AND SETTERS |
|
450 |
//-------------------- |
|
451 |
||
452 |
/** |
|
453 |
* Returns the object name of the first object in the set of observed |
|
454 |
* MBeans, or <code>null</code> if there is no such object. |
|
455 |
* |
|
456 |
* @return The object being observed. |
|
457 |
* |
|
458 |
* @see #setObservedObject(ObjectName) |
|
459 |
* |
|
460 |
* @deprecated As of JMX 1.2, replaced by {@link #getObservedObjects} |
|
461 |
*/ |
|
462 |
@Deprecated |
|
463 |
public synchronized ObjectName getObservedObject() { |
|
464 |
if (observedObjects.isEmpty()) { |
|
465 |
return null; |
|
466 |
} else { |
|
467 |
return observedObjects.get(0).getObservedObject(); |
|
468 |
} |
|
469 |
} |
|
470 |
||
471 |
/** |
|
472 |
* Removes all objects from the set of observed objects, and then adds the |
|
473 |
* specified object. |
|
474 |
* |
|
475 |
* @param object The object to observe. |
|
476 |
* @exception IllegalArgumentException The specified |
|
477 |
* object is null. |
|
478 |
* |
|
479 |
* @see #getObservedObject() |
|
480 |
* |
|
481 |
* @deprecated As of JMX 1.2, replaced by {@link #addObservedObject} |
|
482 |
*/ |
|
483 |
@Deprecated |
|
484 |
public synchronized void setObservedObject(ObjectName object) |
|
485 |
throws IllegalArgumentException { |
|
486 |
if (object == null) |
|
487 |
throw new IllegalArgumentException("Null observed object"); |
|
488 |
if (observedObjects.size() == 1 && containsObservedObject(object)) |
|
489 |
return; |
|
490 |
observedObjects.clear(); |
|
491 |
addObservedObject(object); |
|
492 |
} |
|
493 |
||
494 |
/** |
|
495 |
* Adds the specified object in the set of observed MBeans, if this object |
|
496 |
* is not already present. |
|
497 |
* |
|
498 |
* @param object The object to observe. |
|
499 |
* @exception IllegalArgumentException The specified object is null. |
|
500 |
* |
|
501 |
*/ |
|
502 |
public synchronized void addObservedObject(ObjectName object) |
|
503 |
throws IllegalArgumentException { |
|
504 |
||
505 |
if (object == null) { |
|
506 |
throw new IllegalArgumentException("Null observed object"); |
|
507 |
} |
|
508 |
||
509 |
// Check that the specified object is not already contained. |
|
510 |
// |
|
511 |
if (containsObservedObject(object)) |
|
512 |
return; |
|
513 |
||
514 |
// Add the specified object in the list. |
|
515 |
// |
|
516 |
ObservedObject o = createObservedObject(object); |
|
517 |
o.setAlreadyNotified(RESET_FLAGS_ALREADY_NOTIFIED); |
|
1581
81388748f694
6683213: CounterMonitor's derived Gauge badly initialized
dfuchs
parents:
1446
diff
changeset
|
518 |
o.setDerivedGauge(INTEGER_ZERO); |
2 | 519 |
o.setDerivedGaugeTimeStamp(System.currentTimeMillis()); |
520 |
observedObjects.add(o); |
|
521 |
||
522 |
// Update legacy protected stuff. |
|
523 |
// |
|
524 |
createAlreadyNotified(); |
|
525 |
} |
|
526 |
||
527 |
/** |
|
528 |
* Removes the specified object from the set of observed MBeans. |
|
529 |
* |
|
530 |
* @param object The object to remove. |
|
531 |
* |
|
532 |
*/ |
|
533 |
public synchronized void removeObservedObject(ObjectName object) { |
|
534 |
// Check for null object. |
|
535 |
// |
|
536 |
if (object == null) |
|
537 |
return; |
|
538 |
||
539 |
final ObservedObject o = getObservedObject(object); |
|
540 |
if (o != null) { |
|
541 |
// Remove the specified object from the list. |
|
542 |
// |
|
543 |
observedObjects.remove(o); |
|
544 |
// Update legacy protected stuff. |
|
545 |
// |
|
546 |
createAlreadyNotified(); |
|
547 |
} |
|
548 |
} |
|
549 |
||
550 |
/** |
|
551 |
* Tests whether the specified object is in the set of observed MBeans. |
|
552 |
* |
|
553 |
* @param object The object to check. |
|
554 |
* @return <CODE>true</CODE> if the specified object is present, |
|
555 |
* <CODE>false</CODE> otherwise. |
|
556 |
* |
|
557 |
*/ |
|
558 |
public synchronized boolean containsObservedObject(ObjectName object) { |
|
559 |
return getObservedObject(object) != null; |
|
560 |
} |
|
561 |
||
562 |
/** |
|
563 |
* Returns an array containing the objects being observed. |
|
564 |
* |
|
565 |
* @return The objects being observed. |
|
566 |
* |
|
567 |
*/ |
|
568 |
public synchronized ObjectName[] getObservedObjects() { |
|
569 |
ObjectName[] names = new ObjectName[observedObjects.size()]; |
|
570 |
for (int i = 0; i < names.length; i++) |
|
571 |
names[i] = observedObjects.get(i).getObservedObject(); |
|
572 |
return names; |
|
573 |
} |
|
574 |
||
575 |
/** |
|
576 |
* Gets the attribute being observed. |
|
577 |
* <BR>The observed attribute is not initialized by default (set to null). |
|
578 |
* |
|
579 |
* @return The attribute being observed. |
|
580 |
* |
|
581 |
* @see #setObservedAttribute |
|
582 |
*/ |
|
583 |
public synchronized String getObservedAttribute() { |
|
584 |
return observedAttribute; |
|
585 |
} |
|
586 |
||
587 |
/** |
|
588 |
* Sets the attribute to observe. |
|
589 |
* <BR>The observed attribute is not initialized by default (set to null). |
|
590 |
* |
|
591 |
* @param attribute The attribute to observe. |
|
592 |
* @exception IllegalArgumentException The specified |
|
593 |
* attribute is null. |
|
594 |
* |
|
595 |
* @see #getObservedAttribute |
|
596 |
*/ |
|
597 |
public void setObservedAttribute(String attribute) |
|
598 |
throws IllegalArgumentException { |
|
599 |
||
600 |
if (attribute == null) { |
|
601 |
throw new IllegalArgumentException("Null observed attribute"); |
|
602 |
} |
|
603 |
||
604 |
// Update alreadyNotified array. |
|
605 |
// |
|
606 |
synchronized (this) { |
|
607 |
if (observedAttribute != null && |
|
608 |
observedAttribute.equals(attribute)) |
|
609 |
return; |
|
610 |
observedAttribute = attribute; |
|
611 |
||
612 |
// Reset the complex type attribute information |
|
613 |
// such that it is recalculated again. |
|
614 |
// |
|
615 |
cleanupIsComplexTypeAttribute(); |
|
616 |
||
617 |
int index = 0; |
|
618 |
for (ObservedObject o : observedObjects) { |
|
619 |
resetAlreadyNotified(o, index++, |
|
620 |
OBSERVED_ATTRIBUTE_ERROR_NOTIFIED | |
|
621 |
OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED); |
|
622 |
} |
|
623 |
} |
|
624 |
} |
|
625 |
||
626 |
/** |
|
627 |
* Gets the granularity period (in milliseconds). |
|
628 |
* <BR>The default value of the granularity period is 10 seconds. |
|
629 |
* |
|
630 |
* @return The granularity period value. |
|
631 |
* |
|
632 |
* @see #setGranularityPeriod |
|
633 |
*/ |
|
634 |
public synchronized long getGranularityPeriod() { |
|
635 |
return granularityPeriod; |
|
636 |
} |
|
637 |
||
638 |
/** |
|
639 |
* Sets the granularity period (in milliseconds). |
|
640 |
* <BR>The default value of the granularity period is 10 seconds. |
|
641 |
* |
|
642 |
* @param period The granularity period value. |
|
643 |
* @exception IllegalArgumentException The granularity |
|
644 |
* period is less than or equal to zero. |
|
645 |
* |
|
646 |
* @see #getGranularityPeriod |
|
647 |
*/ |
|
648 |
public synchronized void setGranularityPeriod(long period) |
|
649 |
throws IllegalArgumentException { |
|
650 |
||
651 |
if (period <= 0) { |
|
652 |
throw new IllegalArgumentException("Nonpositive granularity " + |
|
653 |
"period"); |
|
654 |
} |
|
655 |
||
656 |
if (granularityPeriod == period) |
|
657 |
return; |
|
658 |
granularityPeriod = period; |
|
659 |
||
660 |
// Reschedule the scheduler task if the monitor is active. |
|
661 |
// |
|
662 |
if (isActive()) { |
|
663 |
cleanupFutures(); |
|
664 |
schedulerFuture = scheduler.schedule(schedulerTask, |
|
665 |
period, |
|
666 |
TimeUnit.MILLISECONDS); |
|
667 |
} |
|
668 |
} |
|
669 |
||
670 |
/** |
|
671 |
* Tests whether the monitor MBean is active. A monitor MBean is |
|
672 |
* marked active when the {@link #start start} method is called. |
|
673 |
* It becomes inactive when the {@link #stop stop} method is |
|
674 |
* called. |
|
675 |
* |
|
676 |
* @return <CODE>true</CODE> if the monitor MBean is active, |
|
677 |
* <CODE>false</CODE> otherwise. |
|
678 |
*/ |
|
679 |
/* This method must be synchronized so that the monitoring thread will |
|
680 |
correctly see modifications to the isActive variable. See the MonitorTask |
|
681 |
action executed by the Scheduled Executor Service. */ |
|
682 |
public synchronized boolean isActive() { |
|
683 |
return isActive; |
|
684 |
} |
|
685 |
||
686 |
/* |
|
687 |
* ------------------------------------------ |
|
688 |
* PACKAGE METHODS |
|
689 |
* ------------------------------------------ |
|
690 |
*/ |
|
691 |
||
692 |
/** |
|
693 |
* Starts the monitor. |
|
694 |
*/ |
|
695 |
void doStart() { |
|
696 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
697 |
"doStart()", "start the monitor"); |
|
698 |
||
699 |
synchronized (this) { |
|
700 |
if (isActive()) { |
|
701 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
702 |
"doStart()", "the monitor is already active"); |
|
703 |
return; |
|
704 |
} |
|
705 |
||
706 |
isActive = true; |
|
707 |
||
708 |
// Reset the complex type attribute information |
|
709 |
// such that it is recalculated again. |
|
710 |
// |
|
711 |
cleanupIsComplexTypeAttribute(); |
|
712 |
||
713 |
// Cache the AccessControlContext of the Monitor.start() caller. |
|
714 |
// The monitor tasks will be executed within this context. |
|
715 |
// |
|
716 |
acc = AccessController.getContext(); |
|
717 |
||
718 |
// Start the scheduler. |
|
719 |
// |
|
720 |
cleanupFutures(); |
|
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
721 |
schedulerTask.setMonitorTask(new MonitorTask()); |
2 | 722 |
schedulerFuture = scheduler.schedule(schedulerTask, |
723 |
getGranularityPeriod(), |
|
724 |
TimeUnit.MILLISECONDS); |
|
725 |
} |
|
726 |
} |
|
727 |
||
728 |
/** |
|
729 |
* Stops the monitor. |
|
730 |
*/ |
|
731 |
void doStop() { |
|
732 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
733 |
"doStop()", "stop the monitor"); |
|
734 |
||
735 |
synchronized (this) { |
|
736 |
if (!isActive()) { |
|
737 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
738 |
"doStop()", "the monitor is not active"); |
|
739 |
return; |
|
740 |
} |
|
741 |
||
742 |
isActive = false; |
|
743 |
||
744 |
// Cancel the scheduler task associated with the |
|
745 |
// scheduler and its associated monitor task. |
|
746 |
// |
|
747 |
cleanupFutures(); |
|
748 |
||
749 |
// Reset the AccessControlContext. |
|
750 |
// |
|
2617
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
751 |
acc = noPermissionsACC; |
2 | 752 |
|
753 |
// Reset the complex type attribute information |
|
754 |
// such that it is recalculated again. |
|
755 |
// |
|
756 |
cleanupIsComplexTypeAttribute(); |
|
757 |
} |
|
758 |
} |
|
759 |
||
760 |
/** |
|
761 |
* Gets the derived gauge of the specified object, if this object is |
|
762 |
* contained in the set of observed MBeans, or <code>null</code> otherwise. |
|
763 |
* |
|
764 |
* @param object the name of the object whose derived gauge is to |
|
765 |
* be returned. |
|
766 |
* |
|
767 |
* @return The derived gauge of the specified object. |
|
768 |
* |
|
769 |
* @since 1.6 |
|
770 |
*/ |
|
771 |
synchronized Object getDerivedGauge(ObjectName object) { |
|
772 |
final ObservedObject o = getObservedObject(object); |
|
773 |
return o == null ? null : o.getDerivedGauge(); |
|
774 |
} |
|
775 |
||
776 |
/** |
|
777 |
* Gets the derived gauge timestamp of the specified object, if |
|
778 |
* this object is contained in the set of observed MBeans, or |
|
779 |
* <code>0</code> otherwise. |
|
780 |
* |
|
781 |
* @param object the name of the object whose derived gauge |
|
782 |
* timestamp is to be returned. |
|
783 |
* |
|
784 |
* @return The derived gauge timestamp of the specified object. |
|
785 |
* |
|
786 |
*/ |
|
787 |
synchronized long getDerivedGaugeTimeStamp(ObjectName object) { |
|
788 |
final ObservedObject o = getObservedObject(object); |
|
789 |
return o == null ? 0 : o.getDerivedGaugeTimeStamp(); |
|
790 |
} |
|
791 |
||
792 |
Object getAttribute(MBeanServerConnection mbsc, |
|
793 |
ObjectName object, |
|
794 |
String attribute) |
|
795 |
throws AttributeNotFoundException, |
|
796 |
InstanceNotFoundException, |
|
797 |
MBeanException, |
|
798 |
ReflectionException, |
|
799 |
IOException { |
|
800 |
// Check for "ObservedAttribute" replacement. |
|
801 |
// This could happen if a thread A called setObservedAttribute() |
|
802 |
// while other thread B was in the middle of the monitor() method |
|
803 |
// and received the old observed attribute value. |
|
804 |
// |
|
805 |
final boolean lookupMBeanInfo; |
|
806 |
synchronized (this) { |
|
807 |
if (!isActive()) |
|
808 |
throw new IllegalArgumentException( |
|
809 |
"The monitor has been stopped"); |
|
810 |
if (!attribute.equals(getObservedAttribute())) |
|
811 |
throw new IllegalArgumentException( |
|
812 |
"The observed attribute has been changed"); |
|
813 |
lookupMBeanInfo = |
|
814 |
(firstAttribute == null && attribute.indexOf('.') != -1); |
|
815 |
} |
|
816 |
||
817 |
// Look up MBeanInfo if needed |
|
818 |
// |
|
819 |
final MBeanInfo mbi; |
|
820 |
if (lookupMBeanInfo) { |
|
821 |
try { |
|
822 |
mbi = mbsc.getMBeanInfo(object); |
|
823 |
} catch (IntrospectionException e) { |
|
824 |
throw new IllegalArgumentException(e); |
|
825 |
} |
|
826 |
} else { |
|
827 |
mbi = null; |
|
828 |
} |
|
829 |
||
830 |
// Check for complex type attribute |
|
831 |
// |
|
832 |
final String fa; |
|
833 |
synchronized (this) { |
|
834 |
if (!isActive()) |
|
835 |
throw new IllegalArgumentException( |
|
836 |
"The monitor has been stopped"); |
|
837 |
if (!attribute.equals(getObservedAttribute())) |
|
838 |
throw new IllegalArgumentException( |
|
839 |
"The observed attribute has been changed"); |
|
840 |
if (firstAttribute == null) { |
|
841 |
if (attribute.indexOf('.') != -1) { |
|
842 |
MBeanAttributeInfo mbaiArray[] = mbi.getAttributes(); |
|
843 |
for (MBeanAttributeInfo mbai : mbaiArray) { |
|
844 |
if (attribute.equals(mbai.getName())) { |
|
845 |
firstAttribute = attribute; |
|
846 |
break; |
|
847 |
} |
|
848 |
} |
|
849 |
if (firstAttribute == null) { |
|
850 |
String tokens[] = attribute.split("\\.", -1); |
|
851 |
firstAttribute = tokens[0]; |
|
852 |
for (int i = 1; i < tokens.length; i++) |
|
853 |
remainingAttributes.add(tokens[i]); |
|
854 |
isComplexTypeAttribute = true; |
|
855 |
} |
|
856 |
} else { |
|
857 |
firstAttribute = attribute; |
|
858 |
} |
|
859 |
} |
|
860 |
fa = firstAttribute; |
|
861 |
} |
|
862 |
return mbsc.getAttribute(object, fa); |
|
863 |
} |
|
864 |
||
865 |
Comparable<?> getComparableFromAttribute(ObjectName object, |
|
866 |
String attribute, |
|
867 |
Object value) |
|
868 |
throws AttributeNotFoundException { |
|
869 |
if (isComplexTypeAttribute) { |
|
870 |
Object v = value; |
|
871 |
for (String attr : remainingAttributes) |
|
34 | 872 |
v = Introspector.elementFromComplex(v, attr); |
2 | 873 |
return (Comparable<?>) v; |
874 |
} else { |
|
875 |
return (Comparable<?>) value; |
|
876 |
} |
|
877 |
} |
|
878 |
||
879 |
boolean isComparableTypeValid(ObjectName object, |
|
880 |
String attribute, |
|
881 |
Comparable<?> value) { |
|
882 |
return true; |
|
883 |
} |
|
884 |
||
885 |
String buildErrorNotification(ObjectName object, |
|
886 |
String attribute, |
|
887 |
Comparable<?> value) { |
|
888 |
return null; |
|
889 |
} |
|
890 |
||
891 |
void onErrorNotification(MonitorNotification notification) { |
|
892 |
} |
|
893 |
||
894 |
Comparable<?> getDerivedGaugeFromComparable(ObjectName object, |
|
895 |
String attribute, |
|
896 |
Comparable<?> value) { |
|
897 |
return (Comparable<?>) value; |
|
898 |
} |
|
899 |
||
900 |
MonitorNotification buildAlarmNotification(ObjectName object, |
|
901 |
String attribute, |
|
902 |
Comparable<?> value){ |
|
903 |
return null; |
|
904 |
} |
|
905 |
||
906 |
boolean isThresholdTypeValid(ObjectName object, |
|
907 |
String attribute, |
|
908 |
Comparable<?> value) { |
|
909 |
return true; |
|
910 |
} |
|
911 |
||
912 |
static Class<? extends Number> classForType(NumericalType type) { |
|
913 |
switch (type) { |
|
914 |
case BYTE: |
|
915 |
return Byte.class; |
|
916 |
case SHORT: |
|
917 |
return Short.class; |
|
918 |
case INTEGER: |
|
919 |
return Integer.class; |
|
920 |
case LONG: |
|
921 |
return Long.class; |
|
922 |
case FLOAT: |
|
923 |
return Float.class; |
|
924 |
case DOUBLE: |
|
925 |
return Double.class; |
|
926 |
default: |
|
927 |
throw new IllegalArgumentException( |
|
928 |
"Unsupported numerical type"); |
|
929 |
} |
|
930 |
} |
|
931 |
||
932 |
static boolean isValidForType(Object value, Class<? extends Number> c) { |
|
933 |
return ((value == INTEGER_ZERO) || c.isInstance(value)); |
|
934 |
} |
|
935 |
||
936 |
/** |
|
937 |
* Get the specified {@code ObservedObject} if this object is |
|
938 |
* contained in the set of observed MBeans, or {@code null} |
|
939 |
* otherwise. |
|
940 |
* |
|
941 |
* @param object the name of the {@code ObservedObject} to retrieve. |
|
942 |
* |
|
943 |
* @return The {@code ObservedObject} associated to the supplied |
|
944 |
* {@code ObjectName}. |
|
945 |
* |
|
946 |
* @since 1.6 |
|
947 |
*/ |
|
948 |
synchronized ObservedObject getObservedObject(ObjectName object) { |
|
949 |
for (ObservedObject o : observedObjects) |
|
950 |
if (o.getObservedObject().equals(object)) |
|
951 |
return o; |
|
952 |
return null; |
|
953 |
} |
|
954 |
||
955 |
/** |
|
956 |
* Factory method for ObservedObject creation. |
|
957 |
* |
|
958 |
* @since 1.6 |
|
959 |
*/ |
|
960 |
ObservedObject createObservedObject(ObjectName object) { |
|
961 |
return new ObservedObject(object); |
|
962 |
} |
|
963 |
||
964 |
/** |
|
965 |
* Create the {@link #alreadyNotified} array from |
|
966 |
* the {@code ObservedObject} array list. |
|
967 |
*/ |
|
968 |
synchronized void createAlreadyNotified() { |
|
969 |
// Update elementCount. |
|
970 |
// |
|
971 |
elementCount = observedObjects.size(); |
|
972 |
||
973 |
// Update arrays. |
|
974 |
// |
|
975 |
alreadyNotifieds = new int[elementCount]; |
|
976 |
for (int i = 0; i < elementCount; i++) { |
|
977 |
alreadyNotifieds[i] = observedObjects.get(i).getAlreadyNotified(); |
|
978 |
} |
|
979 |
updateDeprecatedAlreadyNotified(); |
|
980 |
} |
|
981 |
||
982 |
/** |
|
983 |
* Update the deprecated {@link #alreadyNotified} field. |
|
984 |
*/ |
|
985 |
synchronized void updateDeprecatedAlreadyNotified() { |
|
986 |
if (elementCount > 0) |
|
987 |
alreadyNotified = alreadyNotifieds[0]; |
|
988 |
else |
|
989 |
alreadyNotified = 0; |
|
990 |
} |
|
991 |
||
992 |
/** |
|
993 |
* Update the {@link #alreadyNotifieds} array element at the given index |
|
994 |
* with the already notified flag in the given {@code ObservedObject}. |
|
995 |
* Ensure the deprecated {@link #alreadyNotified} field is updated |
|
996 |
* if appropriate. |
|
997 |
*/ |
|
998 |
synchronized void updateAlreadyNotified(ObservedObject o, int index) { |
|
999 |
alreadyNotifieds[index] = o.getAlreadyNotified(); |
|
1000 |
if (index == 0) |
|
1001 |
updateDeprecatedAlreadyNotified(); |
|
1002 |
} |
|
1003 |
||
1004 |
/** |
|
1005 |
* Check if the given bits in the given element of {@link #alreadyNotifieds} |
|
1006 |
* are set. |
|
1007 |
*/ |
|
1008 |
synchronized boolean isAlreadyNotified(ObservedObject o, int mask) { |
|
1009 |
return ((o.getAlreadyNotified() & mask) != 0); |
|
1010 |
} |
|
1011 |
||
1012 |
/** |
|
1013 |
* Set the given bits in the given element of {@link #alreadyNotifieds}. |
|
1014 |
* Ensure the deprecated {@link #alreadyNotified} field is updated |
|
1015 |
* if appropriate. |
|
1016 |
*/ |
|
1017 |
synchronized void setAlreadyNotified(ObservedObject o, int index, |
|
1018 |
int mask, int an[]) { |
|
1019 |
final int i = computeAlreadyNotifiedIndex(o, index, an); |
|
1020 |
if (i == -1) |
|
1021 |
return; |
|
1022 |
o.setAlreadyNotified(o.getAlreadyNotified() | mask); |
|
1023 |
updateAlreadyNotified(o, i); |
|
1024 |
} |
|
1025 |
||
1026 |
/** |
|
1027 |
* Reset the given bits in the given element of {@link #alreadyNotifieds}. |
|
1028 |
* Ensure the deprecated {@link #alreadyNotified} field is updated |
|
1029 |
* if appropriate. |
|
1030 |
*/ |
|
1031 |
synchronized void resetAlreadyNotified(ObservedObject o, |
|
1032 |
int index, int mask) { |
|
1033 |
o.setAlreadyNotified(o.getAlreadyNotified() & ~mask); |
|
1034 |
updateAlreadyNotified(o, index); |
|
1035 |
} |
|
1036 |
||
1037 |
/** |
|
1038 |
* Reset all bits in the given element of {@link #alreadyNotifieds}. |
|
1039 |
* Ensure the deprecated {@link #alreadyNotified} field is updated |
|
1040 |
* if appropriate. |
|
1041 |
*/ |
|
1042 |
synchronized void resetAllAlreadyNotified(ObservedObject o, |
|
1043 |
int index, int an[]) { |
|
1044 |
final int i = computeAlreadyNotifiedIndex(o, index, an); |
|
1045 |
if (i == -1) |
|
1046 |
return; |
|
1047 |
o.setAlreadyNotified(RESET_FLAGS_ALREADY_NOTIFIED); |
|
1048 |
updateAlreadyNotified(o, index); |
|
1049 |
} |
|
1050 |
||
1051 |
/** |
|
1052 |
* Check if the {@link #alreadyNotifieds} array has been modified. |
|
1053 |
* If true recompute the index for the given observed object. |
|
1054 |
*/ |
|
1055 |
synchronized int computeAlreadyNotifiedIndex(ObservedObject o, |
|
1056 |
int index, int an[]) { |
|
1057 |
if (an == alreadyNotifieds) { |
|
1058 |
return index; |
|
1059 |
} else { |
|
1060 |
return observedObjects.indexOf(o); |
|
1061 |
} |
|
1062 |
} |
|
1063 |
||
1064 |
/* |
|
1065 |
* ------------------------------------------ |
|
1066 |
* PRIVATE METHODS |
|
1067 |
* ------------------------------------------ |
|
1068 |
*/ |
|
1069 |
||
1070 |
/** |
|
1071 |
* This method is used by the monitor MBean to create and send a |
|
1072 |
* monitor notification to all the listeners registered for this |
|
1073 |
* kind of notification. |
|
1074 |
* |
|
1075 |
* @param type The notification type. |
|
1076 |
* @param timeStamp The notification emission date. |
|
1077 |
* @param msg The notification message. |
|
1078 |
* @param derGauge The derived gauge. |
|
1079 |
* @param trigger The threshold/string (depending on the monitor |
|
1080 |
* type) that triggered off the notification. |
|
1081 |
* @param object The ObjectName of the observed object that triggered |
|
1082 |
* off the notification. |
|
1083 |
* @param onError Flag indicating if this monitor notification is |
|
1084 |
* an error notification or an alarm notification. |
|
1085 |
*/ |
|
1086 |
private void sendNotification(String type, long timeStamp, String msg, |
|
1087 |
Object derGauge, Object trigger, |
|
1088 |
ObjectName object, boolean onError) { |
|
1089 |
if (!isActive()) |
|
1090 |
return; |
|
1091 |
||
1092 |
if (MONITOR_LOGGER.isLoggable(Level.FINER)) { |
|
1093 |
MONITOR_LOGGER.logp(Level.FINER, Monitor.class.getName(), |
|
1094 |
"sendNotification", "send notification: " + |
|
1095 |
"\n\tNotification observed object = " + object + |
|
1096 |
"\n\tNotification observed attribute = " + observedAttribute + |
|
1097 |
"\n\tNotification derived gauge = " + derGauge); |
|
1098 |
} |
|
1099 |
||
1100 |
long seqno = sequenceNumber.getAndIncrement(); |
|
1101 |
||
1102 |
MonitorNotification mn = |
|
1103 |
new MonitorNotification(type, |
|
1104 |
this, |
|
1105 |
seqno, |
|
1106 |
timeStamp, |
|
1107 |
msg, |
|
1108 |
object, |
|
1109 |
observedAttribute, |
|
1110 |
derGauge, |
|
1111 |
trigger); |
|
1112 |
if (onError) |
|
1113 |
onErrorNotification(mn); |
|
1114 |
sendNotification(mn); |
|
1115 |
} |
|
1116 |
||
1117 |
/** |
|
1118 |
* This method is called by the monitor each time |
|
1119 |
* the granularity period has been exceeded. |
|
1120 |
* @param o The observed object. |
|
1121 |
*/ |
|
1122 |
private void monitor(ObservedObject o, int index, int an[]) { |
|
1123 |
||
526
61ba2d5ea9da
6701459: Synchronization bug pattern found in javax.management.relation.RelationService
emcmanus
parents:
34
diff
changeset
|
1124 |
String attribute; |
2 | 1125 |
String notifType = null; |
1126 |
String msg = null; |
|
1127 |
Object derGauge = null; |
|
1128 |
Object trigger = null; |
|
526
61ba2d5ea9da
6701459: Synchronization bug pattern found in javax.management.relation.RelationService
emcmanus
parents:
34
diff
changeset
|
1129 |
ObjectName object; |
2 | 1130 |
Comparable<?> value = null; |
1131 |
MonitorNotification alarm = null; |
|
1132 |
||
1133 |
if (!isActive()) |
|
1134 |
return; |
|
1135 |
||
1136 |
// Check that neither the observed object nor the |
|
1137 |
// observed attribute are null. If the observed |
|
1138 |
// object or observed attribute is null, this means |
|
1139 |
// that the monitor started before a complete |
|
1140 |
// initialization and nothing is done. |
|
1141 |
// |
|
1142 |
synchronized (this) { |
|
1143 |
object = o.getObservedObject(); |
|
1144 |
attribute = getObservedAttribute(); |
|
1145 |
if (object == null || attribute == null) { |
|
1146 |
return; |
|
1147 |
} |
|
1148 |
} |
|
1149 |
||
1150 |
// Check that the observed object is registered in the |
|
1151 |
// MBean server and that the observed attribute |
|
1152 |
// belongs to the observed object. |
|
1153 |
// |
|
1154 |
Object attributeValue = null; |
|
1155 |
try { |
|
1156 |
attributeValue = getAttribute(server, object, attribute); |
|
1157 |
if (attributeValue == null) |
|
1158 |
if (isAlreadyNotified( |
|
1159 |
o, OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED)) |
|
1160 |
return; |
|
1161 |
else { |
|
1162 |
notifType = OBSERVED_ATTRIBUTE_TYPE_ERROR; |
|
1163 |
setAlreadyNotified( |
|
1164 |
o, index, OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED, an); |
|
1165 |
msg = "The observed attribute value is null."; |
|
1166 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1167 |
"monitor", msg); |
|
1168 |
} |
|
1169 |
} catch (NullPointerException np_ex) { |
|
1170 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) |
|
1171 |
return; |
|
1172 |
else { |
|
1173 |
notifType = RUNTIME_ERROR; |
|
1174 |
setAlreadyNotified(o, index, RUNTIME_ERROR_NOTIFIED, an); |
|
1175 |
msg = |
|
1176 |
"The monitor must be registered in the MBean " + |
|
1177 |
"server or an MBeanServerConnection must be " + |
|
1178 |
"explicitly supplied."; |
|
1179 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1180 |
"monitor", msg); |
|
1181 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1182 |
"monitor", np_ex.toString()); |
|
1183 |
} |
|
1184 |
} catch (InstanceNotFoundException inf_ex) { |
|
1185 |
if (isAlreadyNotified(o, OBSERVED_OBJECT_ERROR_NOTIFIED)) |
|
1186 |
return; |
|
1187 |
else { |
|
1188 |
notifType = OBSERVED_OBJECT_ERROR; |
|
1189 |
setAlreadyNotified( |
|
1190 |
o, index, OBSERVED_OBJECT_ERROR_NOTIFIED, an); |
|
1191 |
msg = |
|
1192 |
"The observed object must be accessible in " + |
|
1193 |
"the MBeanServerConnection."; |
|
1194 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1195 |
"monitor", msg); |
|
1196 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1197 |
"monitor", inf_ex.toString()); |
|
1198 |
} |
|
1199 |
} catch (AttributeNotFoundException anf_ex) { |
|
1200 |
if (isAlreadyNotified(o, OBSERVED_ATTRIBUTE_ERROR_NOTIFIED)) |
|
1201 |
return; |
|
1202 |
else { |
|
1203 |
notifType = OBSERVED_ATTRIBUTE_ERROR; |
|
1204 |
setAlreadyNotified( |
|
1205 |
o, index, OBSERVED_ATTRIBUTE_ERROR_NOTIFIED, an); |
|
1206 |
msg = |
|
1207 |
"The observed attribute must be accessible in " + |
|
1208 |
"the observed object."; |
|
1209 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1210 |
"monitor", msg); |
|
1211 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1212 |
"monitor", anf_ex.toString()); |
|
1213 |
} |
|
1214 |
} catch (MBeanException mb_ex) { |
|
1215 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) |
|
1216 |
return; |
|
1217 |
else { |
|
1218 |
notifType = RUNTIME_ERROR; |
|
1219 |
setAlreadyNotified(o, index, RUNTIME_ERROR_NOTIFIED, an); |
|
1220 |
msg = mb_ex.getMessage() == null ? "" : mb_ex.getMessage(); |
|
1221 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1222 |
"monitor", msg); |
|
1223 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1224 |
"monitor", mb_ex.toString()); |
|
1225 |
} |
|
1226 |
} catch (ReflectionException ref_ex) { |
|
1227 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) { |
|
1228 |
return; |
|
1229 |
} else { |
|
1230 |
notifType = RUNTIME_ERROR; |
|
1231 |
setAlreadyNotified(o, index, RUNTIME_ERROR_NOTIFIED, an); |
|
1232 |
msg = ref_ex.getMessage() == null ? "" : ref_ex.getMessage(); |
|
1233 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1234 |
"monitor", msg); |
|
1235 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1236 |
"monitor", ref_ex.toString()); |
|
1237 |
} |
|
1238 |
} catch (IOException io_ex) { |
|
1239 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) |
|
1240 |
return; |
|
1241 |
else { |
|
1242 |
notifType = RUNTIME_ERROR; |
|
1243 |
setAlreadyNotified(o, index, RUNTIME_ERROR_NOTIFIED, an); |
|
1244 |
msg = io_ex.getMessage() == null ? "" : io_ex.getMessage(); |
|
1245 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1246 |
"monitor", msg); |
|
1247 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1248 |
"monitor", io_ex.toString()); |
|
1249 |
} |
|
1250 |
} catch (RuntimeException rt_ex) { |
|
1251 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) |
|
1252 |
return; |
|
1253 |
else { |
|
1254 |
notifType = RUNTIME_ERROR; |
|
1255 |
setAlreadyNotified(o, index, RUNTIME_ERROR_NOTIFIED, an); |
|
1256 |
msg = rt_ex.getMessage() == null ? "" : rt_ex.getMessage(); |
|
1257 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1258 |
"monitor", msg); |
|
1259 |
MONITOR_LOGGER.logp(Level.FINEST, Monitor.class.getName(), |
|
1260 |
"monitor", rt_ex.toString()); |
|
1261 |
} |
|
1262 |
} |
|
1263 |
||
1264 |
synchronized (this) { |
|
1265 |
||
1266 |
// Check if the monitor has been stopped. |
|
1267 |
// |
|
1268 |
if (!isActive()) |
|
1269 |
return; |
|
1270 |
||
1271 |
// Check if the observed attribute has been changed. |
|
1272 |
// |
|
1273 |
// Avoid race condition where mbs.getAttribute() succeeded but |
|
1274 |
// another thread replaced the observed attribute meanwhile. |
|
1275 |
// |
|
1276 |
// Avoid setting computed derived gauge on erroneous attribute. |
|
1277 |
// |
|
1278 |
if (!attribute.equals(getObservedAttribute())) |
|
1279 |
return; |
|
1280 |
||
1281 |
// Derive a Comparable object from the ObservedAttribute value |
|
1282 |
// if the type of the ObservedAttribute value is a complex type. |
|
1283 |
// |
|
1284 |
if (msg == null) { |
|
1285 |
try { |
|
1286 |
value = getComparableFromAttribute(object, |
|
1287 |
attribute, |
|
1288 |
attributeValue); |
|
1289 |
} catch (ClassCastException e) { |
|
1290 |
if (isAlreadyNotified( |
|
1291 |
o, OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED)) |
|
1292 |
return; |
|
1293 |
else { |
|
1294 |
notifType = OBSERVED_ATTRIBUTE_TYPE_ERROR; |
|
1295 |
setAlreadyNotified(o, index, |
|
1296 |
OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED, an); |
|
1297 |
msg = |
|
1298 |
"The observed attribute value does not " + |
|
1299 |
"implement the Comparable interface."; |
|
1300 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1301 |
Monitor.class.getName(), "monitor", msg); |
|
1302 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1303 |
Monitor.class.getName(), "monitor", e.toString()); |
|
1304 |
} |
|
1305 |
} catch (AttributeNotFoundException e) { |
|
1306 |
if (isAlreadyNotified(o, OBSERVED_ATTRIBUTE_ERROR_NOTIFIED)) |
|
1307 |
return; |
|
1308 |
else { |
|
1309 |
notifType = OBSERVED_ATTRIBUTE_ERROR; |
|
1310 |
setAlreadyNotified( |
|
1311 |
o, index, OBSERVED_ATTRIBUTE_ERROR_NOTIFIED, an); |
|
1312 |
msg = |
|
1313 |
"The observed attribute must be accessible in " + |
|
1314 |
"the observed object."; |
|
1315 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1316 |
Monitor.class.getName(), "monitor", msg); |
|
1317 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1318 |
Monitor.class.getName(), "monitor", e.toString()); |
|
1319 |
} |
|
1320 |
} catch (RuntimeException e) { |
|
1321 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) |
|
1322 |
return; |
|
1323 |
else { |
|
1324 |
notifType = RUNTIME_ERROR; |
|
1325 |
setAlreadyNotified(o, index, |
|
1326 |
RUNTIME_ERROR_NOTIFIED, an); |
|
1327 |
msg = e.getMessage() == null ? "" : e.getMessage(); |
|
1328 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1329 |
Monitor.class.getName(), "monitor", msg); |
|
1330 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1331 |
Monitor.class.getName(), "monitor", e.toString()); |
|
1332 |
} |
|
1333 |
} |
|
1334 |
} |
|
1335 |
||
1336 |
// Check that the observed attribute type is supported by this |
|
1337 |
// monitor. |
|
1338 |
// |
|
1339 |
if (msg == null) { |
|
1340 |
if (!isComparableTypeValid(object, attribute, value)) { |
|
1341 |
if (isAlreadyNotified( |
|
1342 |
o, OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED)) |
|
1343 |
return; |
|
1344 |
else { |
|
1345 |
notifType = OBSERVED_ATTRIBUTE_TYPE_ERROR; |
|
1346 |
setAlreadyNotified(o, index, |
|
1347 |
OBSERVED_ATTRIBUTE_TYPE_ERROR_NOTIFIED, an); |
|
1348 |
msg = "The observed attribute type is not valid."; |
|
1349 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1350 |
Monitor.class.getName(), "monitor", msg); |
|
1351 |
} |
|
1352 |
} |
|
1353 |
} |
|
1354 |
||
1355 |
// Check that threshold type is supported by this monitor. |
|
1356 |
// |
|
1357 |
if (msg == null) { |
|
1358 |
if (!isThresholdTypeValid(object, attribute, value)) { |
|
1359 |
if (isAlreadyNotified(o, THRESHOLD_ERROR_NOTIFIED)) |
|
1360 |
return; |
|
1361 |
else { |
|
1362 |
notifType = THRESHOLD_ERROR; |
|
1363 |
setAlreadyNotified(o, index, |
|
1364 |
THRESHOLD_ERROR_NOTIFIED, an); |
|
1365 |
msg = "The threshold type is not valid."; |
|
1366 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1367 |
Monitor.class.getName(), "monitor", msg); |
|
1368 |
} |
|
1369 |
} |
|
1370 |
} |
|
1371 |
||
1372 |
// Let someone subclassing the monitor to perform additional |
|
1373 |
// monitor consistency checks and report errors if necessary. |
|
1374 |
// |
|
1375 |
if (msg == null) { |
|
1376 |
msg = buildErrorNotification(object, attribute, value); |
|
1377 |
if (msg != null) { |
|
1378 |
if (isAlreadyNotified(o, RUNTIME_ERROR_NOTIFIED)) |
|
1379 |
return; |
|
1380 |
else { |
|
1381 |
notifType = RUNTIME_ERROR; |
|
1382 |
setAlreadyNotified(o, index, |
|
1383 |
RUNTIME_ERROR_NOTIFIED, an); |
|
1384 |
MONITOR_LOGGER.logp(Level.FINEST, |
|
1385 |
Monitor.class.getName(), "monitor", msg); |
|
1386 |
} |
|
1387 |
} |
|
1388 |
} |
|
1389 |
||
1390 |
// If no errors were found then clear all error flags and |
|
1391 |
// let the monitor decide if a notification must be sent. |
|
1392 |
// |
|
1393 |
if (msg == null) { |
|
1394 |
// Clear all already notified flags. |
|
1395 |
// |
|
1396 |
resetAllAlreadyNotified(o, index, an); |
|
1397 |
||
1398 |
// Get derived gauge from comparable value. |
|
1399 |
// |
|
1400 |
derGauge = getDerivedGaugeFromComparable(object, |
|
1401 |
attribute, |
|
1402 |
value); |
|
1403 |
||
1404 |
o.setDerivedGauge(derGauge); |
|
1405 |
o.setDerivedGaugeTimeStamp(System.currentTimeMillis()); |
|
1406 |
||
1407 |
// Check if an alarm must be fired. |
|
1408 |
// |
|
1409 |
alarm = buildAlarmNotification(object, |
|
1410 |
attribute, |
|
1411 |
(Comparable<?>) derGauge); |
|
1412 |
} |
|
1413 |
||
1414 |
} |
|
1415 |
||
1416 |
// Notify monitor errors |
|
1417 |
// |
|
1418 |
if (msg != null) |
|
1419 |
sendNotification(notifType, |
|
1420 |
System.currentTimeMillis(), |
|
1421 |
msg, |
|
1422 |
derGauge, |
|
1423 |
trigger, |
|
1424 |
object, |
|
1425 |
true); |
|
1426 |
||
1427 |
// Notify monitor alarms |
|
1428 |
// |
|
1429 |
if (alarm != null && alarm.getType() != null) |
|
1430 |
sendNotification(alarm.getType(), |
|
1431 |
System.currentTimeMillis(), |
|
1432 |
alarm.getMessage(), |
|
1433 |
derGauge, |
|
1434 |
alarm.getTrigger(), |
|
1435 |
object, |
|
1436 |
false); |
|
1437 |
} |
|
1438 |
||
1439 |
/** |
|
1440 |
* Cleanup the scheduler and monitor tasks futures. |
|
1441 |
*/ |
|
1442 |
private synchronized void cleanupFutures() { |
|
1443 |
if (schedulerFuture != null) { |
|
1444 |
schedulerFuture.cancel(false); |
|
1445 |
schedulerFuture = null; |
|
1446 |
} |
|
1447 |
if (monitorFuture != null) { |
|
1448 |
monitorFuture.cancel(false); |
|
1449 |
monitorFuture = null; |
|
1450 |
} |
|
1451 |
} |
|
1452 |
||
1453 |
/** |
|
1454 |
* Cleanup the "is complex type attribute" info. |
|
1455 |
*/ |
|
1456 |
private synchronized void cleanupIsComplexTypeAttribute() { |
|
1457 |
firstAttribute = null; |
|
1458 |
remainingAttributes.clear(); |
|
1459 |
isComplexTypeAttribute = false; |
|
1460 |
} |
|
1461 |
||
1462 |
/** |
|
1463 |
* SchedulerTask nested class: This class implements the Runnable interface. |
|
1464 |
* |
|
1465 |
* The SchedulerTask is executed periodically with a given fixed delay by |
|
1466 |
* the Scheduled Executor Service. |
|
1467 |
*/ |
|
1468 |
private class SchedulerTask implements Runnable { |
|
1469 |
||
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1470 |
private MonitorTask task; |
2 | 1471 |
|
1472 |
/* |
|
1473 |
* ------------------------------------------ |
|
1474 |
* CONSTRUCTORS |
|
1475 |
* ------------------------------------------ |
|
1476 |
*/ |
|
1477 |
||
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1478 |
public SchedulerTask() { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1479 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1480 |
|
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1481 |
/* |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1482 |
* ------------------------------------------ |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1483 |
* GETTERS/SETTERS |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1484 |
* ------------------------------------------ |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1485 |
*/ |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1486 |
|
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1487 |
public void setMonitorTask(MonitorTask task) { |
2 | 1488 |
this.task = task; |
1489 |
} |
|
1490 |
||
1491 |
/* |
|
1492 |
* ------------------------------------------ |
|
1493 |
* PUBLIC METHODS |
|
1494 |
* ------------------------------------------ |
|
1495 |
*/ |
|
1496 |
||
1497 |
public void run() { |
|
1498 |
synchronized (Monitor.this) { |
|
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1499 |
Monitor.this.monitorFuture = task.submit(); |
2 | 1500 |
} |
1501 |
} |
|
1502 |
} |
|
1503 |
||
1504 |
/** |
|
1505 |
* MonitorTask nested class: This class implements the Runnable interface. |
|
1506 |
* |
|
1507 |
* The MonitorTask is executed periodically with a given fixed delay by the |
|
1508 |
* Scheduled Executor Service. |
|
1509 |
*/ |
|
1510 |
private class MonitorTask implements Runnable { |
|
1511 |
||
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1512 |
private ThreadPoolExecutor executor; |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1513 |
|
2 | 1514 |
/* |
1515 |
* ------------------------------------------ |
|
1516 |
* CONSTRUCTORS |
|
1517 |
* ------------------------------------------ |
|
1518 |
*/ |
|
1519 |
||
1520 |
public MonitorTask() { |
|
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1521 |
// Find out if there's already an existing executor for the calling |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1522 |
// thread and reuse it. Otherwise, create a new one and store it in |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1523 |
// the executors map. If there is a SecurityManager, the group of |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1524 |
// System.getSecurityManager() is used, else the group of the thread |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1525 |
// instantiating this MonitorTask, i.e. the group of the thread that |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1526 |
// calls "Monitor.start()". |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1527 |
SecurityManager s = System.getSecurityManager(); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1528 |
ThreadGroup group = (s != null) ? s.getThreadGroup() : |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1529 |
Thread.currentThread().getThreadGroup(); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1530 |
synchronized (executorsLock) { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1531 |
for (ThreadPoolExecutor e : executors.keySet()) { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1532 |
DaemonThreadFactory tf = |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1533 |
(DaemonThreadFactory) e.getThreadFactory(); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1534 |
ThreadGroup tg = tf.getThreadGroup(); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1535 |
if (tg == group) { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1536 |
executor = e; |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1537 |
break; |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1538 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1539 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1540 |
if (executor == null) { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1541 |
executor = new ThreadPoolExecutor( |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1542 |
maximumPoolSize, |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1543 |
maximumPoolSize, |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1544 |
60L, |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1545 |
TimeUnit.SECONDS, |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1546 |
new LinkedBlockingQueue<Runnable>(), |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1547 |
new DaemonThreadFactory("ThreadGroup<" + |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1548 |
group.getName() + "> Executor", group)); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1549 |
executor.allowCoreThreadTimeOut(true); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1550 |
executors.put(executor, null); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1551 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1552 |
} |
2 | 1553 |
} |
1554 |
||
1555 |
/* |
|
1556 |
* ------------------------------------------ |
|
1557 |
* PUBLIC METHODS |
|
1558 |
* ------------------------------------------ |
|
1559 |
*/ |
|
1560 |
||
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1561 |
public Future<?> submit() { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1562 |
return executor.submit(this); |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1563 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1564 |
|
2 | 1565 |
public void run() { |
1566 |
final ScheduledFuture<?> sf; |
|
2617
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1567 |
final AccessControlContext ac; |
2 | 1568 |
synchronized (Monitor.this) { |
1569 |
sf = Monitor.this.schedulerFuture; |
|
2617
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1570 |
ac = Monitor.this.acc; |
2 | 1571 |
} |
2617
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1572 |
PrivilegedAction<Void> action = new PrivilegedAction<Void>() { |
2 | 1573 |
public Void run() { |
1574 |
if (Monitor.this.isActive()) { |
|
1575 |
final int an[] = alreadyNotifieds; |
|
1576 |
int index = 0; |
|
1577 |
for (ObservedObject o : Monitor.this.observedObjects) { |
|
1578 |
if (Monitor.this.isActive()) { |
|
1579 |
Monitor.this.monitor(o, index++, an); |
|
1580 |
} |
|
1581 |
} |
|
1582 |
} |
|
1583 |
return null; |
|
1584 |
} |
|
2617
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1585 |
}; |
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1586 |
if (ac == null) { |
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1587 |
throw new SecurityException("AccessControlContext cannot be null"); |
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1588 |
} |
4e94fb04861b
6610888: Potential use of cleared of incorrect acc in JMX Monitor
dfuchs
parents:
526
diff
changeset
|
1589 |
AccessController.doPrivileged(action, ac); |
2 | 1590 |
synchronized (Monitor.this) { |
1591 |
if (Monitor.this.isActive() && |
|
1592 |
Monitor.this.schedulerFuture == sf) { |
|
1593 |
Monitor.this.monitorFuture = null; |
|
1594 |
Monitor.this.schedulerFuture = |
|
1595 |
scheduler.schedule(Monitor.this.schedulerTask, |
|
1596 |
Monitor.this.getGranularityPeriod(), |
|
1597 |
TimeUnit.MILLISECONDS); |
|
1598 |
} |
|
1599 |
} |
|
1600 |
} |
|
1601 |
} |
|
1602 |
||
1603 |
/** |
|
1604 |
* Daemon thread factory used by the monitor executors. |
|
1605 |
* <P> |
|
1606 |
* This factory creates all new threads used by an Executor in |
|
1607 |
* the same ThreadGroup. If there is a SecurityManager, it uses |
|
1608 |
* the group of System.getSecurityManager(), else the group of |
|
1609 |
* the thread instantiating this DaemonThreadFactory. Each new |
|
1610 |
* thread is created as a daemon thread with priority |
|
1611 |
* Thread.NORM_PRIORITY. New threads have names accessible via |
|
21656
d4c777ccb1db
8028014: Doclint warning/error cleanup in javax.management
rriggs
parents:
5506
diff
changeset
|
1612 |
* Thread.getName() of "{@literal JMX Monitor <pool-name> Pool [Thread-M]}", |
2 | 1613 |
* where M is the sequence number of the thread created by this |
1614 |
* factory. |
|
1615 |
*/ |
|
1616 |
private static class DaemonThreadFactory implements ThreadFactory { |
|
1617 |
final ThreadGroup group; |
|
1618 |
final AtomicInteger threadNumber = new AtomicInteger(1); |
|
1619 |
final String namePrefix; |
|
526
61ba2d5ea9da
6701459: Synchronization bug pattern found in javax.management.relation.RelationService
emcmanus
parents:
34
diff
changeset
|
1620 |
static final String nameSuffix = "]"; |
2 | 1621 |
|
1622 |
public DaemonThreadFactory(String poolName) { |
|
1623 |
SecurityManager s = System.getSecurityManager(); |
|
1624 |
group = (s != null) ? s.getThreadGroup() : |
|
1625 |
Thread.currentThread().getThreadGroup(); |
|
1626 |
namePrefix = "JMX Monitor " + poolName + " Pool [Thread-"; |
|
1627 |
} |
|
1628 |
||
2619
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1629 |
public DaemonThreadFactory(String poolName, ThreadGroup threadGroup) { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1630 |
group = threadGroup; |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1631 |
namePrefix = "JMX Monitor " + poolName + " Pool [Thread-"; |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1632 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1633 |
|
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1634 |
public ThreadGroup getThreadGroup() { |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1635 |
return group; |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1636 |
} |
cc0bbd192d1a
6610896: JMX Monitor handles thread groups incorrectly
dfuchs
parents:
526
diff
changeset
|
1637 |
|
2 | 1638 |
public Thread newThread(Runnable r) { |
1639 |
Thread t = new Thread(group, |
|
1640 |
r, |
|
1641 |
namePrefix + |
|
1642 |
threadNumber.getAndIncrement() + |
|
1643 |
nameSuffix, |
|
1644 |
0); |
|
1645 |
t.setDaemon(true); |
|
1646 |
if (t.getPriority() != Thread.NORM_PRIORITY) |
|
1647 |
t.setPriority(Thread.NORM_PRIORITY); |
|
1648 |
return t; |
|
1649 |
} |
|
1650 |
} |
|
1651 |
} |