--- /dev/null
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.log4j.jmx;
+
+
+import org.apache.log4j.Appender;
+import org.apache.log4j.Category;
+import org.apache.log4j.Level;
+import org.apache.log4j.LogManager;
+import org.apache.log4j.Logger;
+import org.apache.log4j.helpers.OptionConverter;
+import org.apache.log4j.spi.HierarchyEventListener;
+import org.apache.log4j.spi.LoggerRepository;
+
+import javax.management.Attribute;
+import javax.management.AttributeNotFoundException;
+import javax.management.InvalidAttributeValueException;
+import javax.management.JMException;
+import javax.management.ListenerNotFoundException;
+import javax.management.MBeanAttributeInfo;
+import javax.management.MBeanConstructorInfo;
+import javax.management.MBeanException;
+import javax.management.MBeanInfo;
+import javax.management.MBeanNotificationInfo;
+import javax.management.MBeanOperationInfo;
+import javax.management.MBeanParameterInfo;
+import javax.management.Notification;
+import javax.management.NotificationBroadcaster;
+import javax.management.NotificationBroadcasterSupport;
+import javax.management.NotificationFilter;
+import javax.management.NotificationFilterSupport;
+import javax.management.NotificationListener;
+import javax.management.ObjectName;
+import javax.management.ReflectionException;
+import javax.management.RuntimeOperationsException;
+import java.lang.reflect.Constructor;
+import java.util.Vector;
+
+public class HierarchyDynamicMBean extends AbstractDynamicMBean
+ implements HierarchyEventListener,
+ NotificationBroadcaster {
+
+ static final String ADD_APPENDER = "addAppender.";
+ static final String THRESHOLD = "threshold";
+
+ private MBeanConstructorInfo[] dConstructors = new MBeanConstructorInfo[1];
+ private MBeanOperationInfo[] dOperations = new MBeanOperationInfo[1];
+
+ private Vector vAttributes = new Vector();
+ private String dClassName = this.getClass().getName();
+ private String dDescription =
+ "This MBean acts as a management facade for org.apache.log4j.Hierarchy.";
+
+ private NotificationBroadcasterSupport nbs = new NotificationBroadcasterSupport();
+
+
+ private LoggerRepository hierarchy;
+
+ private static Logger log = Logger.getLogger(HierarchyDynamicMBean.class);
+
+ public HierarchyDynamicMBean() {
+ hierarchy = LogManager.getLoggerRepository();
+ buildDynamicMBeanInfo();
+ }
+
+ private
+ void buildDynamicMBeanInfo() {
+ Constructor[] constructors = this.getClass().getConstructors();
+ dConstructors[0] = new MBeanConstructorInfo(
+ "HierarchyDynamicMBean(): Constructs a HierarchyDynamicMBean instance",
+ constructors[0]);
+
+ vAttributes.add(new MBeanAttributeInfo(THRESHOLD,
+ "java.lang.String",
+ "The \"threshold\" state of the hiearchy.",
+ true,
+ true,
+ false));
+
+ MBeanParameterInfo[] params = new MBeanParameterInfo[1];
+ params[0] = new MBeanParameterInfo("name", "java.lang.String",
+ "Create a logger MBean" );
+ dOperations[0] = new MBeanOperationInfo("addLoggerMBean",
+ "addLoggerMBean(): add a loggerMBean",
+ params ,
+ "javax.management.ObjectName",
+ MBeanOperationInfo.ACTION);
+ }
+
+
+ public
+ ObjectName addLoggerMBean(String name) {
+ Logger cat = LogManager.exists(name);
+
+ if(cat != null) {
+ return addLoggerMBean(cat);
+ } else {
+ return null;
+ }
+ }
+
+ ObjectName addLoggerMBean(Logger logger) {
+ String name = logger.getName();
+ ObjectName objectName = null;
+ try {
+ LoggerDynamicMBean loggerMBean = new LoggerDynamicMBean(logger);
+ objectName = new ObjectName("log4j", "logger", name);
+
+ if (!server.isRegistered(objectName)) {
+ registerMBean(loggerMBean, objectName);
+ NotificationFilterSupport nfs = new NotificationFilterSupport();
+ nfs.enableType(ADD_APPENDER + logger.getName());
+ log.debug("---Adding logger [" + name + "] as listener.");
+ nbs.addNotificationListener(loggerMBean, nfs, null);
+ vAttributes.add(new MBeanAttributeInfo("logger=" + name, "javax.management.ObjectName",
+ "The " + name + " logger.", true, true, // this makes the object
+ // clickable
+ false));
+
+ }
+
+ } catch(JMException e) {
+ log.error("Could not add loggerMBean for ["+name+"].", e);
+ } catch(RuntimeException e) {
+ log.error("Could not add loggerMBean for ["+name+"].", e);
+ }
+ return objectName;
+ }
+
+ public
+ void addNotificationListener(NotificationListener listener,
+ NotificationFilter filter,
+ java.lang.Object handback) {
+ nbs.addNotificationListener(listener, filter, handback);
+ }
+
+ protected
+ Logger getLogger() {
+ return log;
+ }
+
+ public
+ MBeanInfo getMBeanInfo() {
+ //cat.debug("getMBeanInfo called.");
+
+ MBeanAttributeInfo[] attribs = new MBeanAttributeInfo[vAttributes.size()];
+ vAttributes.toArray(attribs);
+
+ return new MBeanInfo(dClassName,
+ dDescription,
+ attribs,
+ dConstructors,
+ dOperations,
+ new MBeanNotificationInfo[0]);
+ }
+
+ public
+ MBeanNotificationInfo[] getNotificationInfo(){
+ return nbs.getNotificationInfo();
+ }
+
+ public
+ Object invoke(String operationName,
+ Object params[],
+ String signature[]) throws MBeanException,
+ ReflectionException {
+
+ if (operationName == null) {
+ throw new RuntimeOperationsException(
+ new IllegalArgumentException("Operation name cannot be null"),
+ "Cannot invoke a null operation in " + dClassName);
+ }
+ // Check for a recognized operation name and call the corresponding operation
+
+ if(operationName.equals("addLoggerMBean")) {
+ return addLoggerMBean((String)params[0]);
+ } else {
+ throw new ReflectionException(
+ new NoSuchMethodException(operationName),
+ "Cannot find the operation " + operationName + " in " + dClassName);
+ }
+
+ }
+
+
+ public
+ Object getAttribute(String attributeName) throws AttributeNotFoundException,
+ MBeanException,
+ ReflectionException {
+
+ // Check attributeName is not null to avoid NullPointerException later on
+ if (attributeName == null) {
+ throw new RuntimeOperationsException(new IllegalArgumentException(
+ "Attribute name cannot be null"),
+ "Cannot invoke a getter of " + dClassName + " with null attribute name");
+ }
+
+ log.debug("Called getAttribute with ["+attributeName+"].");
+
+ // Check for a recognized attributeName and call the corresponding getter
+ if (attributeName.equals(THRESHOLD)) {
+ return hierarchy.getThreshold();
+ } else if(attributeName.startsWith("logger")) {
+ int k = attributeName.indexOf("%3D");
+ String val = attributeName;
+ if(k > 0) {
+ val = attributeName.substring(0, k)+'='+ attributeName.substring(k+3);
+ }
+ try {
+ return new ObjectName("log4j:"+val);
+ } catch(JMException e) {
+ log.error("Could not create ObjectName" + val);
+ } catch(RuntimeException e) {
+ log.error("Could not create ObjectName" + val);
+ }
+ }
+
+
+
+ // If attributeName has not been recognized throw an AttributeNotFoundException
+ throw(new AttributeNotFoundException("Cannot find " + attributeName +
+ " attribute in " + dClassName));
+
+ }
+
+
+ public
+ void addAppenderEvent(Category logger, Appender appender) {
+ log.debug("addAppenderEvent called: logger="+logger.getName()+
+ ", appender="+appender.getName());
+ Notification n = new Notification(ADD_APPENDER+logger.getName(), this, 0);
+ n.setUserData(appender);
+ log.debug("sending notification.");
+ nbs.sendNotification(n);
+ }
+
+ public
+ void removeAppenderEvent(Category cat, Appender appender) {
+ log.debug("removeAppenderCalled: logger="+cat.getName()+
+ ", appender="+appender.getName());
+ }
+
+ public
+ void postRegister(java.lang.Boolean registrationDone) {
+ log.debug("postRegister is called.");
+ hierarchy.addHierarchyEventListener(this);
+ Logger root = hierarchy.getRootLogger();
+ addLoggerMBean(root);
+ }
+
+ public
+ void removeNotificationListener(NotificationListener listener)
+ throws ListenerNotFoundException {
+ nbs.removeNotificationListener(listener);
+ }
+
+ public
+ void setAttribute(Attribute attribute) throws AttributeNotFoundException,
+ InvalidAttributeValueException,
+ MBeanException,
+ ReflectionException {
+
+ // Check attribute is not null to avoid NullPointerException later on
+ if (attribute == null) {
+ throw new RuntimeOperationsException(
+ new IllegalArgumentException("Attribute cannot be null"),
+ "Cannot invoke a setter of "+dClassName+" with null attribute");
+ }
+ String name = attribute.getName();
+ Object value = attribute.getValue();
+
+ if (name == null) {
+ throw new RuntimeOperationsException(
+ new IllegalArgumentException("Attribute name cannot be null"),
+ "Cannot invoke the setter of "+dClassName+
+ " with null attribute name");
+ }
+
+ if(name.equals(THRESHOLD)) {
+ Level l = OptionConverter.toLevel((String) value,
+ hierarchy.getThreshold());
+ hierarchy.setThreshold(l);
+ }
+
+
+ }
+}
git://source.jalview.org / jalview.git / blobdiff