null when
- * the deregistration finished.
- *
- * @see #preRegister(MBeanServer, ObjectName)
- * @see #postDeregister()
- */
- protected MBeanServer mbeanServer;
-
- /**
- * Creates a new instance of this class. The Sigar instance is stored (and
- * accessible) via the {@link #sigarImpl} member. A second instance is
- * stored within the {@link #sigar} member which is either {@link #sigarImpl}
- * or an instance of {@link SigarProxyCache} with the expiration time set to
- * whatever the cacheMode parameter specifies.
The following cache modes exist:
- * - *| Constant | Description |
| {@link #CACHELESS} | No cached instance, {@link #sigar}
- * == {@link #sigarImpl}. |
| {@link #CACHED_500MS} | 500 millisecond cache, for high - * frequency queries on raw data such as reading out CPU timers each - * second. Avoids reading out multiple data sets when all attributes of - * an MBean are queried in short sequence. |
| {@link #CACHED_5SEC} | 5 second cache, for high frequency - * queries on calculated data such as CPU percentages. |
| {@link #CACHED_30SEC} | 30 second cache, for normal queries
- * or data readouts such as CPU model / vendor. This is the default if
- * nothing (0) is specified. |
| {@link #DEFAULT} | Same as {@link #CACHED_30SEC}. |
Note: Only make use of the cacheless or half second mode if you - * know what you are doing. They may have impact on system performance if - * used excessively.
- * - * @param sigar The Sigar impl to use. Must not benull
- * @param cacheMode The cache mode to use for {@link #sigar} or {@link #CACHELESS}
- * if no separate, cached instance is to be maintained.
- */
- protected AbstractMBean(Sigar sigar, short cacheMode) {
- // store Sigar
- this.sigarImpl = sigar;
-
- // create a cached instance as well
- if (cacheMode == CACHELESS) {
- // no cached version
- this.sigar = this.sigarImpl;
-
- } else if (cacheMode == CACHED_500MS) {
- // 500ms cached version (for 1/sec queries)
- this.sigar = SigarProxyCache.newInstance(this.sigarImpl, 500);
-
- } else if (cacheMode == CACHED_5SEC) {
- // 5sec cached version (for avg'd queries)
- this.sigar = SigarProxyCache.newInstance(this.sigarImpl, 5000);
-
- } else /* if (cacheMode == CACHED_30SEC) */{
- // 30sec (default) cached version (for info and long term queries)
- this.sigar = SigarProxyCache.newInstance(this.sigarImpl, 30000);
- }
- }
-
- /**
- * Returns the object name the MBean is registered with within the
- * MBeanServer. May be null in case the instance is not
- * registered to an MBeanServer, but used standalone.
- *
- * @return The object name or null if not registered to an
- * MBeanServer
- */
- public abstract String getObjectName();
-
- /**
- * Returns a runtime exception for the type and SigarException specified.
- *
- * @param type
- * The type that was called
- * @param e
- * The exception that was raised
- * @return A runtime exception encapsulating the information specified
- */
- protected RuntimeException unexpectedError(String type, SigarException e) {
- String msg = "Unexected error in Sigar.get" + type + ": "
- + e.getMessage();
- return new IllegalArgumentException(msg);
- }
-
- /**
- * Loops over all attributes and calls
- * {@link DynamicMBean#getAttribute(java.lang.String)} method for each
- * attribute sequentially. Any exception thrown by those methods are ignored
- * and simply cause the attribute not being added to the result.
- */
- public AttributeList getAttributes(String[] attrs) {
- final AttributeList result = new AttributeList();
- for (int i = 0; i < attrs.length; i++) {
- try {
- result.add(new Attribute(attrs[i], getAttribute(attrs[i])));
- } catch (AttributeNotFoundException e) {
- // ignore, as we cannot throw this exception
- } catch (MBeanException e) {
- // ignore, as we cannot throw this exception
- } catch (ReflectionException e) {
- // ignore, as we cannot throw this exception
- }
- }
- return result;
- }
-
- /**
- * Loops over all attributes and calls
- * {@link DynamicMBean#setAttribute(Attribute)} for each attribute
- * sequentially. Any exception thrown by those methods are ignored and
- * simply cause the attribute not being added to the result.
- */
- public AttributeList setAttributes(AttributeList attrs) {
- final AttributeList result = new AttributeList();
- for (int i = 0; i < attrs.size(); i++) {
- try {
- final Attribute next = (Attribute) attrs.get(i);
- setAttribute(next);
- result.add(next);
- } catch (AttributeNotFoundException e) {
- // ignore, as we cannot throw this exception
- } catch (InvalidAttributeValueException e) {
- // ignore, as we cannot throw this exception
- } catch (MBeanException e) {
- // ignore, as we cannot throw this exception
- } catch (ReflectionException e) {
- // ignore, as we cannot throw this exception
- }
- }
- return result;
- }
-
- // -------
- // Implementation of the MBeanRegistration interface
- // -------
-
- /**
- * Returns new ObjectName(this.getObjectName()) to guarantee
- * a reliable and reproducable object name.
Note: Make sure any subclass does a super call to this method, - * otherwise the implementation might be broken.
- * - * @see MBeanRegistration#preRegister(MBeanServer, ObjectName) - */ - public ObjectName preRegister(MBeanServer server, ObjectName name) - throws Exception { - this.mbeanServer = server; - return new ObjectName(getObjectName()); - } - - /** - * Empty implementation, allowing aubclasses to ignore the interface. - * - *Note: Make sure any subclass does a super call to this method, - * otherwise the implementation might be broken.
- * - * @see MBeanRegistration#postRegister(Boolean) - */ - public void postRegister(Boolean success) { - } - - /** - * Empty implementation, allowing aubclasses to ignore the interface. - * - *Note: Make sure any subclass does a super call to this method, - * otherwise the implementation might be broken.
- * - * @see MBeanRegistration#preDeregister() - */ - public void preDeregister() throws Exception { - } - - /** - * Empty implementation, allowing aubclasses to ignore the interface. - * - *Note: Make sure any subclass does a super call to this method, - * otherwise the implementation might be broken.
- * - * @see MBeanRegistration#postDeregister() - */ - public void postDeregister() { - this.mbeanServer = null; - } -} +/* + * Copyright (C) [2004, 2005, 2006, 2007], Hyperic, Inc. + * This file is part of SIGAR. + * + * SIGAR is free software; you can redistribute it and/or modify + * it under the terms version 2 of the GNU General Public License as + * published by the Free Software Foundation. This program is distributed + * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without + * even the implied warranty of MERCHANTABILITY or FITNESS FOR A + * PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA. + */ + +package org.hyperic.sigar.jmx; + +import javax.management.Attribute; +import javax.management.AttributeList; +import javax.management.AttributeNotFoundException; +import javax.management.DynamicMBean; +import javax.management.InvalidAttributeValueException; +import javax.management.MBeanException; +import javax.management.MBeanRegistration; +import javax.management.MBeanServer; +import javax.management.ObjectName; +import javax.management.ReflectionException; + +import org.hyperic.sigar.Sigar; +import org.hyperic.sigar.SigarException; +import org.hyperic.sigar.SigarProxy; +import org.hyperic.sigar.SigarProxyCache; + +/** + * Base class for all Sigar JMX MBeans. Provides a skeleton which handles + * creation of the Sigar proxy instance and provides some convenience methods. + * It also enforces usage of the {@link DynamicMBean} inferface while + * implementing part of it, and it adds empty implementations for all methods of + * the {@link MBeanRegistration} interface, allowing subclasses to only + * implement subset of them. + * + * @author Bjoern Martin + * @since 1.5 + */ +public abstract class AbstractMBean implements DynamicMBean, MBeanRegistration { + + protected static final String MBEAN_ATTR_TYPE = "type"; + + protected static final short CACHED_30SEC = 0; + + protected static final short CACHED_5SEC = 1; + + protected static final short CACHED_500MS = 2; + + protected static final short CACHELESS = 3; + + protected static final short DEFAULT = CACHED_30SEC; + + /** + * The Sigar implementation to be used to fetch information from the system. + */ + protected final Sigar sigarImpl; + + /** + * The Sigar proxy cache to be used in case the data does not have to be + * fetched during each call. The cache timeout is decided during + * construction. See {@link AbstractMBean#AbstractMBean(Sigar, short)} for + * details. + * + * @see AbstractMBean#AbstractMBean(Sigar, short) + */ + protected final SigarProxy sigar; + + /** + * The MBean server this MBean is registered to. Set during the MBean's + * registration to the MBean server and unset tonull when
+ * the deregistration finished.
+ *
+ * @see #preRegister(MBeanServer, ObjectName)
+ * @see #postDeregister()
+ */
+ protected MBeanServer mbeanServer;
+
+ /**
+ * Creates a new instance of this class. The Sigar instance is stored (and
+ * accessible) via the {@link #sigarImpl} member. A second instance is
+ * stored within the {@link #sigar} member which is either {@link #sigarImpl}
+ * or an instance of {@link SigarProxyCache} with the expiration time set to
+ * whatever the cacheMode parameter specifies.
The following cache modes exist:
+ * + *| Constant | Description |
| {@link #CACHELESS} | No cached instance, {@link #sigar}
+ * == {@link #sigarImpl}. |
| {@link #CACHED_500MS} | 500 millisecond cache, for high + * frequency queries on raw data such as reading out CPU timers each + * second. Avoids reading out multiple data sets when all attributes of + * an MBean are queried in short sequence. |
| {@link #CACHED_5SEC} | 5 second cache, for high frequency + * queries on calculated data such as CPU percentages. |
| {@link #CACHED_30SEC} | 30 second cache, for normal queries
+ * or data readouts such as CPU model / vendor. This is the default if
+ * nothing (0) is specified. |
| {@link #DEFAULT} | Same as {@link #CACHED_30SEC}. |
Note: Only make use of the cacheless or half second mode if you + * know what you are doing. They may have impact on system performance if + * used excessively.
+ * + * @param sigar The Sigar impl to use. Must not benull
+ * @param cacheMode The cache mode to use for {@link #sigar} or {@link #CACHELESS}
+ * if no separate, cached instance is to be maintained.
+ */
+ protected AbstractMBean(Sigar sigar, short cacheMode) {
+ // store Sigar
+ this.sigarImpl = sigar;
+
+ // create a cached instance as well
+ if (cacheMode == CACHELESS) {
+ // no cached version
+ this.sigar = this.sigarImpl;
+
+ } else if (cacheMode == CACHED_500MS) {
+ // 500ms cached version (for 1/sec queries)
+ this.sigar = SigarProxyCache.newInstance(this.sigarImpl, 500);
+
+ } else if (cacheMode == CACHED_5SEC) {
+ // 5sec cached version (for avg'd queries)
+ this.sigar = SigarProxyCache.newInstance(this.sigarImpl, 5000);
+
+ } else /* if (cacheMode == CACHED_30SEC) */{
+ // 30sec (default) cached version (for info and long term queries)
+ this.sigar = SigarProxyCache.newInstance(this.sigarImpl, 30000);
+ }
+ }
+
+ /**
+ * Returns the object name the MBean is registered with within the
+ * MBeanServer. May be null in case the instance is not
+ * registered to an MBeanServer, but used standalone.
+ *
+ * @return The object name or null if not registered to an
+ * MBeanServer
+ */
+ public abstract String getObjectName();
+
+ /**
+ * Returns a runtime exception for the type and SigarException specified.
+ *
+ * @param type
+ * The type that was called
+ * @param e
+ * The exception that was raised
+ * @return A runtime exception encapsulating the information specified
+ */
+ protected RuntimeException unexpectedError(String type, SigarException e) {
+ String msg = "Unexected error in Sigar.get" + type + ": "
+ + e.getMessage();
+ return new IllegalArgumentException(msg);
+ }
+
+ /**
+ * Loops over all attributes and calls
+ * {@link DynamicMBean#getAttribute(java.lang.String)} method for each
+ * attribute sequentially. Any exception thrown by those methods are ignored
+ * and simply cause the attribute not being added to the result.
+ */
+ public AttributeList getAttributes(String[] attrs) {
+ final AttributeList result = new AttributeList();
+ for (int i = 0; i < attrs.length; i++) {
+ try {
+ result.add(new Attribute(attrs[i], getAttribute(attrs[i])));
+ } catch (AttributeNotFoundException e) {
+ // ignore, as we cannot throw this exception
+ } catch (MBeanException e) {
+ // ignore, as we cannot throw this exception
+ } catch (ReflectionException e) {
+ // ignore, as we cannot throw this exception
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Loops over all attributes and calls
+ * {@link DynamicMBean#setAttribute(Attribute)} for each attribute
+ * sequentially. Any exception thrown by those methods are ignored and
+ * simply cause the attribute not being added to the result.
+ */
+ public AttributeList setAttributes(AttributeList attrs) {
+ final AttributeList result = new AttributeList();
+ for (int i = 0; i < attrs.size(); i++) {
+ try {
+ final Attribute next = (Attribute) attrs.get(i);
+ setAttribute(next);
+ result.add(next);
+ } catch (AttributeNotFoundException e) {
+ // ignore, as we cannot throw this exception
+ } catch (InvalidAttributeValueException e) {
+ // ignore, as we cannot throw this exception
+ } catch (MBeanException e) {
+ // ignore, as we cannot throw this exception
+ } catch (ReflectionException e) {
+ // ignore, as we cannot throw this exception
+ }
+ }
+ return result;
+ }
+
+ // -------
+ // Implementation of the MBeanRegistration interface
+ // -------
+
+ /**
+ * Returns new ObjectName(this.getObjectName()) to guarantee
+ * a reliable and reproducable object name.
Note: Make sure any subclass does a super call to this method, + * otherwise the implementation might be broken.
+ * + * @see MBeanRegistration#preRegister(MBeanServer, ObjectName) + */ + public ObjectName preRegister(MBeanServer server, ObjectName name) + throws Exception { + this.mbeanServer = server; + return new ObjectName(getObjectName()); + } + + /** + * Empty implementation, allowing aubclasses to ignore the interface. + * + *Note: Make sure any subclass does a super call to this method, + * otherwise the implementation might be broken.
+ * + * @see MBeanRegistration#postRegister(Boolean) + */ + public void postRegister(Boolean success) { + } + + /** + * Empty implementation, allowing aubclasses to ignore the interface. + * + *Note: Make sure any subclass does a super call to this method, + * otherwise the implementation might be broken.
+ * + * @see MBeanRegistration#preDeregister() + */ + public void preDeregister() throws Exception { + } + + /** + * Empty implementation, allowing aubclasses to ignore the interface. + * + *Note: Make sure any subclass does a super call to this method, + * otherwise the implementation might be broken.
+ * + * @see MBeanRegistration#postDeregister() + */ + public void postDeregister() { + this.mbeanServer = null; + } +} diff --git a/bindings/java/src/org/hyperic/sigar/jmx/SigarLoadAverage.java b/bindings/java/src/org/hyperic/sigar/jmx/SigarLoadAverage.java index 586f419e..03679966 100644 --- a/bindings/java/src/org/hyperic/sigar/jmx/SigarLoadAverage.java +++ b/bindings/java/src/org/hyperic/sigar/jmx/SigarLoadAverage.java @@ -1,263 +1,263 @@ -/* - * Copyright (C) [2004, 2005, 2006, 2007], Hyperic, Inc. - * This file is part of SIGAR. - * - * SIGAR is free software; you can redistribute it and/or modify - * it under the terms version 2 of the GNU General Public License as - * published by the Free Software Foundation. This program is distributed - * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without - * even the implied warranty of MERCHANTABILITY or FITNESS FOR A - * PARTICULAR PURPOSE. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA. - */ - -package org.hyperic.sigar.jmx; - -import javax.management.Attribute; -import javax.management.AttributeNotFoundException; -import javax.management.MBeanAttributeInfo; -import javax.management.MBeanConstructorInfo; -import javax.management.MBeanInfo; -import javax.management.MBeanParameterInfo; -import javax.management.ReflectionException; - -import org.hyperic.sigar.Sigar; -import org.hyperic.sigar.SigarException; -import org.hyperic.sigar.SigarNotImplementedException; - -/** - * Sigar JMX MBean implementation for theLoadAverage information
- * package. Provides an OpenMBean conform implementation.
- *
- * @author Bjoern Martin
- * @since 1.5
- */
-public class SigarLoadAverage extends AbstractMBean {
-
- private static final String MBEAN_TYPE = "LoadAverage";
-
- /**
- * Returned if {@link Sigar#getLoadAverage()}} is detected to be not
- * implemented on the platform.
- *
- * @see #notImplemented
- */
- private static final double NOT_IMPLEMENTED_LOAD_VALUE = -1.0d;
-
- private static final MBeanInfo MBEAN_INFO;
-
- private static final MBeanAttributeInfo MBEAN_ATTR_LAST1MIN;
-
- private static final MBeanAttributeInfo MBEAN_ATTR_LAST5MIN;
-
- private static final MBeanAttributeInfo MBEAN_ATTR_LAST15MIN;
-
- private static final MBeanConstructorInfo MBEAN_CONSTR_SIGAR;
-
- private static MBeanParameterInfo MBEAN_PARAM_SIGAR;
-
- static {
- MBEAN_ATTR_LAST1MIN = new MBeanAttributeInfo(
- "LastMinute",
- "double",
- "The load average in the last minute, as a fraction of 1, or "
- + "-1.0 if the load cannot be determined on this platform",
- true, false, false);
- MBEAN_ATTR_LAST5MIN = new MBeanAttributeInfo(
- "LastFiveMinutes",
- "double",
- "The load average over the last five minutes, as a fraction "
- + "of 1, or -1.0 if the load cannot be determined on this platform",
- true, false, false);
- MBEAN_ATTR_LAST15MIN = new MBeanAttributeInfo(
- "Last15Minutes",
- "double",
- "The load average over the last 15 minutes, as a fraction of "
- + "1, or -1.0 if the load cannot be determined on this platform",
- true, false, false);
-
- MBEAN_PARAM_SIGAR = new MBeanParameterInfo("sigar", Sigar.class
- .getName(), "The Sigar instance to use to fetch data from");
-
- MBEAN_CONSTR_SIGAR = new MBeanConstructorInfo(
- SigarLoadAverage.class.getName(),
- "Creates a new instance, using the Sigar instance specified "
- + "to fetch the data. Fails if the CPU index is out of range.",
- new MBeanParameterInfo[] { MBEAN_PARAM_SIGAR });
- MBEAN_INFO = new MBeanInfo(
- SigarLoadAverage.class.getName(),
- "Sigar load average MBean. Provides load averages of the "
- + "system over the last one, five and 15 minutes. Due to the "
- + "long term character of that information, the fetch is done "
- + "using a Sigar proxy cache with a timeout of 30 seconds.",
- new MBeanAttributeInfo[] { MBEAN_ATTR_LAST1MIN,
- MBEAN_ATTR_LAST5MIN, MBEAN_ATTR_LAST15MIN },
- new MBeanConstructorInfo[] { MBEAN_CONSTR_SIGAR }, null, null);
-
- }
-
- /**
- * Object name this instance will give itself when being registered to an
- * MBeanServer.
- */
- private final String objectName;
-
- /**
- * Set true when the load average fetch failed with a
- * SigarException that indicates the method is not implemented.
- * Any subsequent call to this instance will then be answered with
- * {@link #NOT_IMPLEMENTED_LOAD_VALUE}.
- *
FIXME : This is a workaround and should be replaced by something
- * more stable, as the code setting this member true relies on
- * a substring being present within the exception. A proposal was made at
- * issue SIGAR-52.
- *
-1.0d if the load cannot be determined on this platform
- */
- public double getLastMinute() {
- try {
- return sigarImpl.getLoadAverage()[0];
-
- } catch (SigarNotImplementedException e) {
- return NOT_IMPLEMENTED_LOAD_VALUE;
-
- } catch (SigarException e) {
- throw unexpectedError(MBEAN_TYPE, e);
- }
- }
-
- /**
- * @return The load average over the last five minutes, as a fraction of 1,
- * or -1.0d if the load cannot be determined on this
- * platform
- */
- public double getLastFiveMinutes() {
- try {
- return sigarImpl.getLoadAverage()[1];
-
- } catch (SigarNotImplementedException e) {
- return NOT_IMPLEMENTED_LOAD_VALUE;
-
- } catch (SigarException e) {
- throw unexpectedError(MBEAN_TYPE, e);
- }
- }
-
- /**
- * @return The load average over the last 15 minutes, as a fraction of 1, or
- * -1.0d if the load cannot be determined on this platform
- */
- public double getLast15Minutes() {
- try {
- return sigarImpl.getLoadAverage()[2];
-
- } catch (SigarNotImplementedException e) {
- return NOT_IMPLEMENTED_LOAD_VALUE;
-
- } catch (SigarException e) {
- throw unexpectedError(MBEAN_TYPE, e);
- }
- }
-
- // -------
- // Implementation of the DynamicMBean interface
- // -------
-
- /*
- * (non-Javadoc)
- *
- * @see DynamicMBean#getAttribute(String)
- */
- public Object getAttribute(String attr) throws AttributeNotFoundException {
-
- if (MBEAN_ATTR_LAST1MIN.getName().equals(attr)) {
- return new Double(getLastMinute());
-
- } else if (MBEAN_ATTR_LAST5MIN.getName().equals(attr)) {
- return new Double(getLastFiveMinutes());
-
- } else if (MBEAN_ATTR_LAST15MIN.getName().equals(attr)) {
- return new Double(getLast15Minutes());
-
- } else {
- throw new AttributeNotFoundException(attr);
- }
- }
-
- /*
- * (non-Javadoc)
- *
- * @see DynamicMBean#setAttribute(Attribute)
- */
- public void setAttribute(Attribute attr) throws AttributeNotFoundException {
- throw new AttributeNotFoundException(attr.getName());
- }
-
- /*
- * (non-Javadoc)
- *
- * @see DynamicMBean#invoke(String, Object[], String[])
- */
- public Object invoke(String actionName, Object[] params, String[] signature)
- throws ReflectionException {
- throw new ReflectionException(new NoSuchMethodException(actionName),
- actionName);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see DynamicMBean#getMBeanInfo()
- */
- public MBeanInfo getMBeanInfo() {
- return MBEAN_INFO;
- }
-}
+/*
+ * Copyright (C) [2004, 2005, 2006, 2007], Hyperic, Inc.
+ * This file is part of SIGAR.
+ *
+ * SIGAR is free software; you can redistribute it and/or modify
+ * it under the terms version 2 of the GNU General Public License as
+ * published by the Free Software Foundation. This program is distributed
+ * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA.
+ */
+
+package org.hyperic.sigar.jmx;
+
+import javax.management.Attribute;
+import javax.management.AttributeNotFoundException;
+import javax.management.MBeanAttributeInfo;
+import javax.management.MBeanConstructorInfo;
+import javax.management.MBeanInfo;
+import javax.management.MBeanParameterInfo;
+import javax.management.ReflectionException;
+
+import org.hyperic.sigar.Sigar;
+import org.hyperic.sigar.SigarException;
+import org.hyperic.sigar.SigarNotImplementedException;
+
+/**
+ * Sigar JMX MBean implementation for the LoadAverage information
+ * package. Provides an OpenMBean conform implementation.
+ *
+ * @author Bjoern Martin
+ * @since 1.5
+ */
+public class SigarLoadAverage extends AbstractMBean {
+
+ private static final String MBEAN_TYPE = "LoadAverage";
+
+ /**
+ * Returned if {@link Sigar#getLoadAverage()}} is detected to be not
+ * implemented on the platform.
+ *
+ * @see #notImplemented
+ */
+ private static final double NOT_IMPLEMENTED_LOAD_VALUE = -1.0d;
+
+ private static final MBeanInfo MBEAN_INFO;
+
+ private static final MBeanAttributeInfo MBEAN_ATTR_LAST1MIN;
+
+ private static final MBeanAttributeInfo MBEAN_ATTR_LAST5MIN;
+
+ private static final MBeanAttributeInfo MBEAN_ATTR_LAST15MIN;
+
+ private static final MBeanConstructorInfo MBEAN_CONSTR_SIGAR;
+
+ private static MBeanParameterInfo MBEAN_PARAM_SIGAR;
+
+ static {
+ MBEAN_ATTR_LAST1MIN = new MBeanAttributeInfo(
+ "LastMinute",
+ "double",
+ "The load average in the last minute, as a fraction of 1, or "
+ + "-1.0 if the load cannot be determined on this platform",
+ true, false, false);
+ MBEAN_ATTR_LAST5MIN = new MBeanAttributeInfo(
+ "LastFiveMinutes",
+ "double",
+ "The load average over the last five minutes, as a fraction "
+ + "of 1, or -1.0 if the load cannot be determined on this platform",
+ true, false, false);
+ MBEAN_ATTR_LAST15MIN = new MBeanAttributeInfo(
+ "Last15Minutes",
+ "double",
+ "The load average over the last 15 minutes, as a fraction of "
+ + "1, or -1.0 if the load cannot be determined on this platform",
+ true, false, false);
+
+ MBEAN_PARAM_SIGAR = new MBeanParameterInfo("sigar", Sigar.class
+ .getName(), "The Sigar instance to use to fetch data from");
+
+ MBEAN_CONSTR_SIGAR = new MBeanConstructorInfo(
+ SigarLoadAverage.class.getName(),
+ "Creates a new instance, using the Sigar instance specified "
+ + "to fetch the data. Fails if the CPU index is out of range.",
+ new MBeanParameterInfo[] { MBEAN_PARAM_SIGAR });
+ MBEAN_INFO = new MBeanInfo(
+ SigarLoadAverage.class.getName(),
+ "Sigar load average MBean. Provides load averages of the "
+ + "system over the last one, five and 15 minutes. Due to the "
+ + "long term character of that information, the fetch is done "
+ + "using a Sigar proxy cache with a timeout of 30 seconds.",
+ new MBeanAttributeInfo[] { MBEAN_ATTR_LAST1MIN,
+ MBEAN_ATTR_LAST5MIN, MBEAN_ATTR_LAST15MIN },
+ new MBeanConstructorInfo[] { MBEAN_CONSTR_SIGAR }, null, null);
+
+ }
+
+ /**
+ * Object name this instance will give itself when being registered to an
+ * MBeanServer.
+ */
+ private final String objectName;
+
+ /**
+ * Set true when the load average fetch failed with a
+ * SigarException that indicates the method is not implemented.
+ * Any subsequent call to this instance will then be answered with
+ * {@link #NOT_IMPLEMENTED_LOAD_VALUE}.
+ *
FIXME : This is a workaround and should be replaced by something
+ * more stable, as the code setting this member true relies on
+ * a substring being present within the exception. A proposal was made at
+ * issue SIGAR-52.
+ *
-1.0d if the load cannot be determined on this platform
+ */
+ public double getLastMinute() {
+ try {
+ return sigarImpl.getLoadAverage()[0];
+
+ } catch (SigarNotImplementedException e) {
+ return NOT_IMPLEMENTED_LOAD_VALUE;
+
+ } catch (SigarException e) {
+ throw unexpectedError(MBEAN_TYPE, e);
+ }
+ }
+
+ /**
+ * @return The load average over the last five minutes, as a fraction of 1,
+ * or -1.0d if the load cannot be determined on this
+ * platform
+ */
+ public double getLastFiveMinutes() {
+ try {
+ return sigarImpl.getLoadAverage()[1];
+
+ } catch (SigarNotImplementedException e) {
+ return NOT_IMPLEMENTED_LOAD_VALUE;
+
+ } catch (SigarException e) {
+ throw unexpectedError(MBEAN_TYPE, e);
+ }
+ }
+
+ /**
+ * @return The load average over the last 15 minutes, as a fraction of 1, or
+ * -1.0d if the load cannot be determined on this platform
+ */
+ public double getLast15Minutes() {
+ try {
+ return sigarImpl.getLoadAverage()[2];
+
+ } catch (SigarNotImplementedException e) {
+ return NOT_IMPLEMENTED_LOAD_VALUE;
+
+ } catch (SigarException e) {
+ throw unexpectedError(MBEAN_TYPE, e);
+ }
+ }
+
+ // -------
+ // Implementation of the DynamicMBean interface
+ // -------
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see DynamicMBean#getAttribute(String)
+ */
+ public Object getAttribute(String attr) throws AttributeNotFoundException {
+
+ if (MBEAN_ATTR_LAST1MIN.getName().equals(attr)) {
+ return new Double(getLastMinute());
+
+ } else if (MBEAN_ATTR_LAST5MIN.getName().equals(attr)) {
+ return new Double(getLastFiveMinutes());
+
+ } else if (MBEAN_ATTR_LAST15MIN.getName().equals(attr)) {
+ return new Double(getLast15Minutes());
+
+ } else {
+ throw new AttributeNotFoundException(attr);
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see DynamicMBean#setAttribute(Attribute)
+ */
+ public void setAttribute(Attribute attr) throws AttributeNotFoundException {
+ throw new AttributeNotFoundException(attr.getName());
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see DynamicMBean#invoke(String, Object[], String[])
+ */
+ public Object invoke(String actionName, Object[] params, String[] signature)
+ throws ReflectionException {
+ throw new ReflectionException(new NoSuchMethodException(actionName),
+ actionName);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see DynamicMBean#getMBeanInfo()
+ */
+ public MBeanInfo getMBeanInfo() {
+ return MBEAN_INFO;
+ }
+}
diff --git a/bindings/java/src/org/hyperic/sigar/jmx/SigarRegistry.java b/bindings/java/src/org/hyperic/sigar/jmx/SigarRegistry.java
index 43fc091f..d6dee6b6 100644
--- a/bindings/java/src/org/hyperic/sigar/jmx/SigarRegistry.java
+++ b/bindings/java/src/org/hyperic/sigar/jmx/SigarRegistry.java
@@ -1,342 +1,342 @@
-/*
- * Copyright (C) [2004, 2005, 2006, 2007], Hyperic, Inc.
- * This file is part of SIGAR.
- *
- * SIGAR is free software; you can redistribute it and/or modify
- * it under the terms version 2 of the GNU General Public License as
- * published by the Free Software Foundation. This program is distributed
- * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
- * even the implied warranty of MERCHANTABILITY or FITNESS FOR A
- * PARTICULAR PURPOSE. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA.
- */
-
-package org.hyperic.sigar.jmx;
-
-import java.util.ArrayList;
-
-import javax.management.Attribute;
-import javax.management.AttributeNotFoundException;
-import javax.management.MBeanConstructorInfo;
-import javax.management.MBeanException;
-import javax.management.MBeanInfo;
-import javax.management.MBeanParameterInfo;
-import javax.management.MBeanServer;
-import javax.management.ObjectInstance;
-import javax.management.ObjectName;
-import javax.management.ReflectionException;
-
-import org.hyperic.sigar.Sigar;
-import org.hyperic.sigar.SigarException;
-
-/**
- * Registry of all Sigar MBeans. Can be used as a convenient way to invoke - * Sigar MBeans at a central point. This brings a bunch of advantages with - * it:
- * - *So using this class to manage the Sigar MBeans requires one line of code - * for creation, registration and MBean spawning, and one line of code to shut - * it all down again.
- * - * @author Bjoern Martin - * @since 1.5 - */ -public class SigarRegistry extends AbstractMBean { - - private static final String MBEAN_TYPE = "SigarRegistry"; - - private static final MBeanInfo MBEAN_INFO; - - private static final MBeanConstructorInfo MBEAN_CONSTR_DEFAULT; - -// private static final MBeanOperationInfo MBEAN_OPER_LISTPROCESSES; - - static { - MBEAN_CONSTR_DEFAULT = new MBeanConstructorInfo( - SigarRegistry.class.getName(), - "Creates a new instance of this class. Will create the Sigar " - + "instance this class uses when constructing other MBeans", - new MBeanParameterInfo[0]); -// MBEAN_OPER_LISTPROCESSES = new MBeanOperationInfo("listProcesses", -// "Executes a query returning the process IDs of all processes " + -// "found on the system.", -// null /* new MBeanParameterInfo[0] */, -// String.class.getName(), MBeanOperationInfo.INFO); - - MBEAN_INFO = new MBeanInfo( - SigarRegistry.class.getName(), - "Sigar MBean registry. Provides a central point for creation " - + "and destruction of Sigar MBeans. Any Sigar MBean created via " - + "this instance will automatically be cleaned up when this " - + "instance is deregistered from the MBean server.", - null /*new MBeanAttributeInfo[0]*/, - new MBeanConstructorInfo[] { MBEAN_CONSTR_DEFAULT }, - null /*new MBeanOperationInfo[0] */, - null /*new MBeanNotificationInfo[0]*/); - } - - private final String objectName; - - private final ArrayList managedBeans; - - /** - * Creates a new instance of this class. Will create the Sigar instance this - * class uses when constructing other MBeans. - */ - public SigarRegistry() { - super(new Sigar(), CACHELESS); - this.objectName = SigarInvokerJMX.DOMAIN_NAME + ":" + MBEAN_ATTR_TYPE - + "=" + MBEAN_TYPE; - this.managedBeans = new ArrayList(); - } - - /* (non-Javadoc) - * @see AbstractMBean#getObjectName() - */ - public String getObjectName() { - return this.objectName; - } - -/* public String listProcesses() { - try { - final long start = System.currentTimeMillis(); - long[] ids = sigar.getProcList(); - StringBuffer procNames = new StringBuffer(); - for (int i = 0; i < ids.length; i++) { - try { - procNames.append(ids[i] + ":" + sigar.getProcExe(ids[i]).getName()).append('\n'); - } catch (SigarException e) { - procNames.append(ids[i] + ":" + e.getMessage()).append('\n'); - } - } - - final long end = System.currentTimeMillis(); - procNames.append("-- Took " + (end-start) + "ms"); - return procNames.toString(); - - } catch (SigarException e) { - throw unexpectedError("ProcList", e); - } - } -*/ - /* (non-Javadoc) - * @see javax.management.DynamicMBean#getAttribute(java.lang.String) - */ - public Object getAttribute(String attr) throws AttributeNotFoundException { - throw new AttributeNotFoundException(attr); - } - - /* (non-Javadoc) - * @see javax.management.DynamicMBean#setAttribute(javax.management.Attribute) - */ - public void setAttribute(Attribute attr) throws AttributeNotFoundException { - throw new AttributeNotFoundException(attr.getName()); - } - - /* (non-Javadoc) - * @see javax.management.DynamicMBean#invoke(java.lang.String, java.lang.Object[], java.lang.String[]) - */ - public Object invoke(String action, Object[] params, String[] signatures) - throws MBeanException, ReflectionException { - -/* if (MBEAN_OPER_LISTPROCESSES.getName().equals(action)) - return listProcesses(); - - else */ - throw new ReflectionException(new NoSuchMethodException(action), action); - } - - /* (non-Javadoc) - * @see javax.management.DynamicMBean#getMBeanInfo() - */ - public MBeanInfo getMBeanInfo() { - return MBEAN_INFO; - } - - // ------- - // Implementation of the MBeanRegistration interface - // ------- - - /** - * Registers the default set of Sigar MBeans. Before doing so, a super call - * is made to satisfy {@link AbstractMBean}. - * - * @see AbstractMBean#postRegister(Boolean) - */ - public void postRegister(Boolean success) { - - super.postRegister(success); - - if (!success.booleanValue()) - return; - - // get CPUs - registerCpuBeans(); - - // get memory - registerMemoryBeans(); - - // get system - registerSystemBeans(); - } - - /** - * Registers MBeans for the Sigar typesCpu, CpuPerc
- * and CpuInfo. One instance will be registered for each CPU
- * (core?) found.
- */
- private void registerCpuBeans() {
- ObjectInstance nextRegistered = null;
-
- try {
- final int cpuCount = sigar.getCpuInfoList().length;
- for (int i = 0; i < cpuCount; i++) {
- // add CPU bean
- SigarCpu nextCpu = new SigarCpu(sigarImpl, i);
- try {
- if (!mbeanServer.isRegistered(new ObjectName(nextCpu
- .getObjectName())))
- nextRegistered = mbeanServer.registerMBean(nextCpu,
- null);
- } catch (Exception e) { // ignore
- }
- // add MBean to set of managed beans
- if (nextRegistered != null)
- managedBeans.add(nextRegistered.getObjectName());
- nextRegistered = null;
-
- // add CPU percentage bean
- SigarCpuPerc nextCpuPerc = new SigarCpuPerc(sigarImpl, i);
- try {
- if (!mbeanServer.isRegistered(new ObjectName(nextCpuPerc
- .getObjectName())))
- nextRegistered = mbeanServer.registerMBean(nextCpuPerc,
- null);
- } catch (Exception e) { // ignore
- }
- // add MBean to set of managed beans
- if (nextRegistered != null)
- managedBeans.add(nextRegistered.getObjectName());
- nextRegistered = null;
-
- // add CPU info bean
- SigarCpuInfo nextCpuInfo = new SigarCpuInfo(sigarImpl, i);
- try {
- if (!mbeanServer.isRegistered(new ObjectName(nextCpuInfo
- .getObjectName())))
- nextRegistered = mbeanServer.registerMBean(nextCpuInfo,
- null);
- } catch (Exception e) { // ignore
- }
- // add MBean to set of managed beans
- if (nextRegistered != null)
- managedBeans.add(nextRegistered.getObjectName());
- nextRegistered = null;
- }
-
- } catch (SigarException e) {
- throw unexpectedError("CpuInfoList", e);
- }
- }
-
- /**
- * Registers MBeans for the Sigar types Mem and Swap.
- */
- private void registerMemoryBeans() {
-
- ObjectInstance nextRegistered = null;
-
- // add physical memory bean
- SigarMem mem = new SigarMem(sigarImpl);
-
- try {
- if (!mbeanServer.isRegistered(new ObjectName(mem.getObjectName())))
- nextRegistered = mbeanServer.registerMBean(mem, null);
- } catch (Exception e) { // ignore
- }
-
- // add MBean to set of managed beans
- if (nextRegistered != null)
- managedBeans.add(nextRegistered.getObjectName());
- nextRegistered = null;
-
- // add swap memory bean
- SigarSwap swap = new SigarSwap(sigarImpl);
- try {
- if (!mbeanServer.isRegistered(new ObjectName(swap.getObjectName())))
- nextRegistered = mbeanServer.registerMBean(swap, null);
- } catch (Exception e) { // ignore
- nextRegistered = null;
- }
-
- // add MBean to set of managed beans
- if (nextRegistered != null)
- managedBeans.add(nextRegistered.getObjectName());
- nextRegistered = null;
- }
-
- /**
- * Registers MBeans for the Sigar types LoadAverage...
- */
- private void registerSystemBeans() {
-
- ObjectInstance nextRegistered = null;
-
- // add load average bean
- SigarLoadAverage loadAvg = new SigarLoadAverage(sigarImpl);
-
- try {
- if (!mbeanServer.isRegistered(new ObjectName(loadAvg
- .getObjectName())))
- nextRegistered = mbeanServer.registerMBean(loadAvg, null);
- } catch (Exception e) { // ignore
- }
-
- // add MBean to set of managed beans
- if (nextRegistered != null)
- managedBeans.add(nextRegistered.getObjectName());
- nextRegistered = null;
- }
-
- /**
- * Deregisters all Sigar MBeans that were created and registered using this
- * instance. After doing so, a super call is made to satisfy {@link AbstractMBean}.
- * @throws Exception
- *
- * @see AbstractMBean#preDeregister()
- */
- public void preDeregister() throws Exception {
-
- // count backwards to remove ONs immediately
- for (int i = managedBeans.size() - 1; i >= 0; i--) {
- ObjectName next = (ObjectName) managedBeans.remove(i);
- if (mbeanServer.isRegistered(next)) {
- try {
- mbeanServer.unregisterMBean(next);
- } catch (Exception e) { // ignore
- }
- }
- }
-
- // do the super call
- super.preDeregister();
- }
-}
+/*
+ * Copyright (C) [2004, 2005, 2006, 2007], Hyperic, Inc.
+ * This file is part of SIGAR.
+ *
+ * SIGAR is free software; you can redistribute it and/or modify
+ * it under the terms version 2 of the GNU General Public License as
+ * published by the Free Software Foundation. This program is distributed
+ * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA.
+ */
+
+package org.hyperic.sigar.jmx;
+
+import java.util.ArrayList;
+
+import javax.management.Attribute;
+import javax.management.AttributeNotFoundException;
+import javax.management.MBeanConstructorInfo;
+import javax.management.MBeanException;
+import javax.management.MBeanInfo;
+import javax.management.MBeanParameterInfo;
+import javax.management.MBeanServer;
+import javax.management.ObjectInstance;
+import javax.management.ObjectName;
+import javax.management.ReflectionException;
+
+import org.hyperic.sigar.Sigar;
+import org.hyperic.sigar.SigarException;
+
+/**
+ * Registry of all Sigar MBeans. Can be used as a convenient way to invoke + * Sigar MBeans at a central point. This brings a bunch of advantages with + * it:
+ * + *So using this class to manage the Sigar MBeans requires one line of code + * for creation, registration and MBean spawning, and one line of code to shut + * it all down again.
+ * + * @author Bjoern Martin + * @since 1.5 + */ +public class SigarRegistry extends AbstractMBean { + + private static final String MBEAN_TYPE = "SigarRegistry"; + + private static final MBeanInfo MBEAN_INFO; + + private static final MBeanConstructorInfo MBEAN_CONSTR_DEFAULT; + +// private static final MBeanOperationInfo MBEAN_OPER_LISTPROCESSES; + + static { + MBEAN_CONSTR_DEFAULT = new MBeanConstructorInfo( + SigarRegistry.class.getName(), + "Creates a new instance of this class. Will create the Sigar " + + "instance this class uses when constructing other MBeans", + new MBeanParameterInfo[0]); +// MBEAN_OPER_LISTPROCESSES = new MBeanOperationInfo("listProcesses", +// "Executes a query returning the process IDs of all processes " + +// "found on the system.", +// null /* new MBeanParameterInfo[0] */, +// String.class.getName(), MBeanOperationInfo.INFO); + + MBEAN_INFO = new MBeanInfo( + SigarRegistry.class.getName(), + "Sigar MBean registry. Provides a central point for creation " + + "and destruction of Sigar MBeans. Any Sigar MBean created via " + + "this instance will automatically be cleaned up when this " + + "instance is deregistered from the MBean server.", + null /*new MBeanAttributeInfo[0]*/, + new MBeanConstructorInfo[] { MBEAN_CONSTR_DEFAULT }, + null /*new MBeanOperationInfo[0] */, + null /*new MBeanNotificationInfo[0]*/); + } + + private final String objectName; + + private final ArrayList managedBeans; + + /** + * Creates a new instance of this class. Will create the Sigar instance this + * class uses when constructing other MBeans. + */ + public SigarRegistry() { + super(new Sigar(), CACHELESS); + this.objectName = SigarInvokerJMX.DOMAIN_NAME + ":" + MBEAN_ATTR_TYPE + + "=" + MBEAN_TYPE; + this.managedBeans = new ArrayList(); + } + + /* (non-Javadoc) + * @see AbstractMBean#getObjectName() + */ + public String getObjectName() { + return this.objectName; + } + +/* public String listProcesses() { + try { + final long start = System.currentTimeMillis(); + long[] ids = sigar.getProcList(); + StringBuffer procNames = new StringBuffer(); + for (int i = 0; i < ids.length; i++) { + try { + procNames.append(ids[i] + ":" + sigar.getProcExe(ids[i]).getName()).append('\n'); + } catch (SigarException e) { + procNames.append(ids[i] + ":" + e.getMessage()).append('\n'); + } + } + + final long end = System.currentTimeMillis(); + procNames.append("-- Took " + (end-start) + "ms"); + return procNames.toString(); + + } catch (SigarException e) { + throw unexpectedError("ProcList", e); + } + } +*/ + /* (non-Javadoc) + * @see javax.management.DynamicMBean#getAttribute(java.lang.String) + */ + public Object getAttribute(String attr) throws AttributeNotFoundException { + throw new AttributeNotFoundException(attr); + } + + /* (non-Javadoc) + * @see javax.management.DynamicMBean#setAttribute(javax.management.Attribute) + */ + public void setAttribute(Attribute attr) throws AttributeNotFoundException { + throw new AttributeNotFoundException(attr.getName()); + } + + /* (non-Javadoc) + * @see javax.management.DynamicMBean#invoke(java.lang.String, java.lang.Object[], java.lang.String[]) + */ + public Object invoke(String action, Object[] params, String[] signatures) + throws MBeanException, ReflectionException { + +/* if (MBEAN_OPER_LISTPROCESSES.getName().equals(action)) + return listProcesses(); + + else */ + throw new ReflectionException(new NoSuchMethodException(action), action); + } + + /* (non-Javadoc) + * @see javax.management.DynamicMBean#getMBeanInfo() + */ + public MBeanInfo getMBeanInfo() { + return MBEAN_INFO; + } + + // ------- + // Implementation of the MBeanRegistration interface + // ------- + + /** + * Registers the default set of Sigar MBeans. Before doing so, a super call + * is made to satisfy {@link AbstractMBean}. + * + * @see AbstractMBean#postRegister(Boolean) + */ + public void postRegister(Boolean success) { + + super.postRegister(success); + + if (!success.booleanValue()) + return; + + // get CPUs + registerCpuBeans(); + + // get memory + registerMemoryBeans(); + + // get system + registerSystemBeans(); + } + + /** + * Registers MBeans for the Sigar typesCpu, CpuPerc
+ * and CpuInfo. One instance will be registered for each CPU
+ * (core?) found.
+ */
+ private void registerCpuBeans() {
+ ObjectInstance nextRegistered = null;
+
+ try {
+ final int cpuCount = sigar.getCpuInfoList().length;
+ for (int i = 0; i < cpuCount; i++) {
+ // add CPU bean
+ SigarCpu nextCpu = new SigarCpu(sigarImpl, i);
+ try {
+ if (!mbeanServer.isRegistered(new ObjectName(nextCpu
+ .getObjectName())))
+ nextRegistered = mbeanServer.registerMBean(nextCpu,
+ null);
+ } catch (Exception e) { // ignore
+ }
+ // add MBean to set of managed beans
+ if (nextRegistered != null)
+ managedBeans.add(nextRegistered.getObjectName());
+ nextRegistered = null;
+
+ // add CPU percentage bean
+ SigarCpuPerc nextCpuPerc = new SigarCpuPerc(sigarImpl, i);
+ try {
+ if (!mbeanServer.isRegistered(new ObjectName(nextCpuPerc
+ .getObjectName())))
+ nextRegistered = mbeanServer.registerMBean(nextCpuPerc,
+ null);
+ } catch (Exception e) { // ignore
+ }
+ // add MBean to set of managed beans
+ if (nextRegistered != null)
+ managedBeans.add(nextRegistered.getObjectName());
+ nextRegistered = null;
+
+ // add CPU info bean
+ SigarCpuInfo nextCpuInfo = new SigarCpuInfo(sigarImpl, i);
+ try {
+ if (!mbeanServer.isRegistered(new ObjectName(nextCpuInfo
+ .getObjectName())))
+ nextRegistered = mbeanServer.registerMBean(nextCpuInfo,
+ null);
+ } catch (Exception e) { // ignore
+ }
+ // add MBean to set of managed beans
+ if (nextRegistered != null)
+ managedBeans.add(nextRegistered.getObjectName());
+ nextRegistered = null;
+ }
+
+ } catch (SigarException e) {
+ throw unexpectedError("CpuInfoList", e);
+ }
+ }
+
+ /**
+ * Registers MBeans for the Sigar types Mem and Swap.
+ */
+ private void registerMemoryBeans() {
+
+ ObjectInstance nextRegistered = null;
+
+ // add physical memory bean
+ SigarMem mem = new SigarMem(sigarImpl);
+
+ try {
+ if (!mbeanServer.isRegistered(new ObjectName(mem.getObjectName())))
+ nextRegistered = mbeanServer.registerMBean(mem, null);
+ } catch (Exception e) { // ignore
+ }
+
+ // add MBean to set of managed beans
+ if (nextRegistered != null)
+ managedBeans.add(nextRegistered.getObjectName());
+ nextRegistered = null;
+
+ // add swap memory bean
+ SigarSwap swap = new SigarSwap(sigarImpl);
+ try {
+ if (!mbeanServer.isRegistered(new ObjectName(swap.getObjectName())))
+ nextRegistered = mbeanServer.registerMBean(swap, null);
+ } catch (Exception e) { // ignore
+ nextRegistered = null;
+ }
+
+ // add MBean to set of managed beans
+ if (nextRegistered != null)
+ managedBeans.add(nextRegistered.getObjectName());
+ nextRegistered = null;
+ }
+
+ /**
+ * Registers MBeans for the Sigar types LoadAverage...
+ */
+ private void registerSystemBeans() {
+
+ ObjectInstance nextRegistered = null;
+
+ // add load average bean
+ SigarLoadAverage loadAvg = new SigarLoadAverage(sigarImpl);
+
+ try {
+ if (!mbeanServer.isRegistered(new ObjectName(loadAvg
+ .getObjectName())))
+ nextRegistered = mbeanServer.registerMBean(loadAvg, null);
+ } catch (Exception e) { // ignore
+ }
+
+ // add MBean to set of managed beans
+ if (nextRegistered != null)
+ managedBeans.add(nextRegistered.getObjectName());
+ nextRegistered = null;
+ }
+
+ /**
+ * Deregisters all Sigar MBeans that were created and registered using this
+ * instance. After doing so, a super call is made to satisfy {@link AbstractMBean}.
+ * @throws Exception
+ *
+ * @see AbstractMBean#preDeregister()
+ */
+ public void preDeregister() throws Exception {
+
+ // count backwards to remove ONs immediately
+ for (int i = managedBeans.size() - 1; i >= 0; i--) {
+ ObjectName next = (ObjectName) managedBeans.remove(i);
+ if (mbeanServer.isRegistered(next)) {
+ try {
+ mbeanServer.unregisterMBean(next);
+ } catch (Exception e) { // ignore
+ }
+ }
+ }
+
+ // do the super call
+ super.preDeregister();
+ }
+}