Source Code Cross Referenced for MBeanHelper.java in  » ESB » open-esb » com » sun » jbi » management » support » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ESB » open esb » com.sun.jbi.management.support 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * BEGIN_HEADER - DO NOT EDIT
003:         *
004:         * The contents of this file are subject to the terms
005:         * of the Common Development and Distribution License
006:         * (the "License").  You may not use this file except
007:         * in compliance with the License.
008:         *
009:         * You can obtain a copy of the license at
010:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
011:         * See the License for the specific language governing
012:         * permissions and limitations under the License.
013:         *
014:         * When distributing Covered Code, include this CDDL
015:         * HEADER in each file and include the License file at
016:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
017:         * If applicable add the following below this CDDL HEADER,
018:         * with the fields enclosed by brackets "[]" replaced with
019:         * your own identifying information: Portions Copyright
020:         * [year] [name of copyright owner]
021:         */
022:
023:        /*
024:         * @(#)MBeanHelper.java
025:         * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
026:         *
027:         * END_HEADER - DO NOT EDIT
028:         */
029:        package com.sun.jbi.management.support;
030:
031:        import com.sun.jbi.StringTranslator;
032:        import com.sun.jbi.management.LocalStringKeys;
033:        import com.sun.jbi.management.MBeanNames;
034:        import com.sun.jbi.management.system.ManagementContext;
035:        import com.sun.jbi.util.EnvironmentAccess;
036:        import javax.management.ObjectName;
037:        import javax.management.MBeanServer;
038:        import javax.management.StandardMBean;
039:        import java.util.logging.Logger;
040:        import java.util.logging.Level;
041:
042:        /**
043:         * Implementation of MBeanHelper interface.
044:         *
045:         * @author Sun Microsystems, Inc.
046:         */
047:        public class MBeanHelper implements  com.sun.jbi.management.MBeanHelper,
048:                com.sun.jbi.util.Constants {
049:
050:            /**
051:             * Handle to the main MBean server
052:             */
053:            private final MBeanServer mMBeanServer;
054:
055:            /**
056:             * Handle to the MBeanNames interface
057:             */
058:            private final MBeanNames mMBeanNames;
059:
060:            /**
061:             * Handle to the logger where this class will log errors.
062:             */
063:            private Logger mLogger;
064:
065:            /**
066:             * Handle to StringTranslator for message translation
067:             */
068:            private StringTranslator mTranslator;
069:
070:            /**
071:             * Environment Context
072:             */
073:            private com.sun.jbi.EnvironmentContext mCtx;
074:
075:            /**
076:             * Constructs a <CODE>MBeanHelper</CODE>.
077:             * This class is meant to be instantiated only once by the framework.
078:             * @param aMBeanServer is the MBean server provided by the framework.
079:             * @param aMBeanNames is the MBeanNames instance created by the framework.
080:             * @param aLogger is where this class should log messages.
081:             */
082:            public MBeanHelper(MBeanServer aMBeanServer,
083:                    com.sun.jbi.management.MBeanNames aMBeanNames,
084:                    Logger aLogger) {
085:                mMBeanServer = aMBeanServer;
086:                mMBeanNames = aMBeanNames;
087:                mLogger = aLogger;
088:                mCtx = com.sun.jbi.util.EnvironmentAccess.getContext();
089:                mTranslator = mCtx
090:                        .getStringTranslator("com.sun.jbi.management");
091:            }
092:
093:            /**
094:             * Create a LoggerMBean and associate it with <CODE>aLogger</CODE>.
095:             * @param aService is the name of the system service that owns the logger.
096:             * @param aLogger is the Logger to associate with the LoggerMBean.
097:             * @return true if successful, otherwise false.
098:             */
099:            public boolean createSystemServiceLoggerMBean(String aService,
100:                    Logger aLogger) {
101:                mLogger.fine("createSystemServiceLoggerMBean for Service="
102:                        + aService + " logger=" + aLogger.getName());
103:
104:                // Create the object name for this service:
105:                ObjectName mbname = mMBeanNames
106:                        .getSystemServiceLoggerMBeanName(aService, aLogger);
107:                if (null == mbname) {
108:                    String statusMsg = mTranslator
109:                            .getString(
110:                                    LocalStringKeys.MBEAN_HELPER_FAILED_OBJECT_CREATION,
111:                                    aService, mMBeanNames.CONTROL_TYPE_LOGGER);
112:                    mLogger.severe(statusMsg);
113:                    return false;
114:                }
115:
116:                try {
117:                    //create a logger mbean implementation:
118:                    SystemServiceLoggerMBeanImpl loggerImpl = new SystemServiceLoggerMBeanImpl(
119:                            aLogger, aService);
120:
121:                    //register a standard mbean:
122:                    StandardMBean mbean = loggerImpl;
123:                    mMBeanServer.registerMBean(mbean, mbname);
124:                } catch (Exception ex) {
125:                    String[] params = new String[] { aService,
126:                            aLogger.getName(), ex.getMessage() };
127:                    String locMsg = mTranslator
128:                            .getString(
129:                                    com.sun.jbi.management.LocalStringKeys.JBI_ADMIN_LOGGER_MBN_CREATE_FAILED,
130:                                    params);
131:
132:                    mLogger.warning(locMsg);
133:                    return false;
134:                }
135:
136:                return true;
137:            }
138:
139:            /**
140:             * Destroy the LoggerMBean registered for <CODE>aService</CODE>.
141:             * @param aService is the name of the system service that owns the logger.
142:             * @return true if successful, otherwise false.
143:             */
144:            public boolean destroySystemServiceLoggerMBean(String aService) {
145:                mLogger.fine("destroySystemServiceLoggerMBean for Service="
146:                        + aService);
147:                //create the object name for this service:
148:                ObjectName mbname = mMBeanNames.getSystemServiceMBeanName(
149:                        aService, mMBeanNames.CONTROL_TYPE_LOGGER);
150:                if (null == mbname) {
151:                    String statusMsg = mTranslator
152:                            .getString(
153:                                    LocalStringKeys.MBEAN_HELPER_FAILED_OBJECT_CREATION,
154:                                    aService, mMBeanNames.CONTROL_TYPE_LOGGER);
155:                    mLogger.severe(statusMsg);
156:                    return false;
157:                }
158:                try {
159:                    mMBeanServer.unregisterMBean(mbname);
160:                } catch (Exception e) {
161:                    /* throws:
162:                     *    InstanceNotFoundException,
163:                     *    MBeanRegistrationException,
164:                     *    RuntimeOperationsException
165:                     */
166:                    return false;
167:                }
168:                return true;
169:            }
170:
171:            /**
172:             * Destroy a LoggerMBean registered for <CODE>aService</CODE>.
173:             * @param aService is the name of the system service that owns the logger.
174:             * @param aLogger is the Logger associated with the LoggerMBean.
175:             * @return true if successful, otherwise false.
176:             */
177:            public boolean destroySystemServiceLoggerMBean(String aService,
178:                    Logger aLogger) {
179:                mLogger.fine("destroySystemServiceLoggerMBean for Service="
180:                        + aService);
181:                // Create the object name for this service:
182:                ObjectName mbname = mMBeanNames
183:                        .getSystemServiceLoggerMBeanName(aService, aLogger);
184:                if (null == mbname) {
185:                    String statusMsg = mTranslator
186:                            .getString(
187:                                    LocalStringKeys.MBEAN_HELPER_FAILED_OBJECT_CREATION,
188:                                    aService, mMBeanNames.CONTROL_TYPE_LOGGER);
189:                    mLogger.severe(statusMsg);
190:                    return false;
191:                }
192:                try {
193:                    mMBeanServer.unregisterMBean(mbname);
194:                } catch (Exception e) {
195:                    /* throws:
196:                     *    InstanceNotFoundException,
197:                     *    MBeanRegistrationException,
198:                     *    RuntimeOperationsException
199:                     */
200:                    e.printStackTrace();
201:                    return false;
202:                }
203:                return true;
204:            }
205:
206:            /**
207:             * Get the value of the management log level
208:             *
209:             * @param envCtx  - management context
210:             * @param attrName - name of the logger
211:             * @return the log level of the requested logger or null if logger not found
212:             */
213:            public static Level getLogLevel(String attrName,
214:                    com.sun.jbi.EnvironmentContext envCtx) {
215:                MBeanNames.ServiceType svcType = MBeanNames.ServiceType
216:                        .valueOf(com.sun.jbi.management.ConfigurationCategory.Logger
217:                                .toString());
218:
219:                ObjectName configMBeanName = envCtx
220:                        .getMBeanNames()
221:                        .getSystemServiceMBeanName(
222:                                MBeanNames.SERVICE_NAME_CONFIG_SERVICE,
223:                                com.sun.jbi.management.config.ConfigurationBuilder
224:                                        .getControlType(svcType));
225:
226:                Level level = null;
227:                try {
228:                    if (envCtx.getMBeanServer().isRegistered(configMBeanName)) {
229:                        String attrValue = (String) envCtx.getMBeanServer()
230:                                .getAttribute(configMBeanName, attrName);
231:
232:                        if (attrValue == null
233:                                || "null".equalsIgnoreCase(attrValue)
234:                                || LOG_LEVEL_DEFAULT
235:                                        .equalsIgnoreCase(attrValue)) {
236:                            level = null;
237:                        } else {
238:
239:                            level = Level.parse(attrValue);
240:                        }
241:                    } else {
242:                        Logger.getLogger("com.sun.jbi").finest(
243:                                "MBean " + configMBeanName
244:                                        + "is not registered");
245:                    }
246:                } catch (javax.management.JMException jmex) {
247:                    Logger.getLogger("com.sun.jbi").warning(jmex.toString());
248:                }
249:
250:                return level;
251:            }
252:
253:            /**
254:             * Set the value of the management log level
255:             *
256:             * @param envCtx  - environment context
257:             * @param logName - name of the logger
258:             * @param logLevel - the log level string
259:             * @return the log level of the requested logger or null if logger not found
260:             */
261:            public static void setLogLevel(String logName, String logLevel,
262:                    com.sun.jbi.EnvironmentContext envCtx, Logger aLogger) {
263:                MBeanNames.ServiceType svcType = MBeanNames.ServiceType
264:                        .valueOf(com.sun.jbi.management.ConfigurationCategory.Logger
265:                                .toString());
266:
267:                ObjectName configMBeanName = envCtx
268:                        .getMBeanNames()
269:                        .getSystemServiceMBeanName(
270:                                MBeanNames.SERVICE_NAME_CONFIG_SERVICE,
271:                                com.sun.jbi.management.config.ConfigurationBuilder
272:                                        .getControlType(svcType));
273:                try {
274:                    if (envCtx.getMBeanServer().isRegistered(configMBeanName)) {
275:                        javax.management.Attribute attrib = new javax.management.Attribute(
276:                                logName, logLevel);
277:                        envCtx.getMBeanServer().setAttribute(configMBeanName,
278:                                attrib);
279:                    } else {
280:                        aLogger.finest("MBean " + configMBeanName
281:                                + "is not registered");
282:                    }
283:                } catch (javax.management.JMException jmex) {
284:                    aLogger.warning(jmex.toString());
285:                }
286:            }
287:
288:            /**
289:             * Revert to the global log level. This causes the persisted attribute to 
290:             * be deleted from the target for the instance. The global log level ( which
291:             * is the same as the default / com.sun.jbi log level. 
292:             *
293:             * @param loggerName - name of the logger whose override is to be deleted
294:             * @param envCtx - environment context
295:             * @param aLogger - logger to log any warnings to
296:             */
297:            public static void revertToGlobalLogLevel(String logName,
298:                    com.sun.jbi.EnvironmentContext envCtx, Logger aLogger) {
299:                MBeanNames.ServiceType svcType = MBeanNames.ServiceType
300:                        .valueOf(com.sun.jbi.management.ConfigurationCategory.Logger
301:                                .toString());
302:
303:                ObjectName configMBeanName = envCtx
304:                        .getMBeanNames()
305:                        .getSystemServiceMBeanName(
306:                                MBeanNames.SERVICE_NAME_CONFIG_SERVICE,
307:                                com.sun.jbi.management.config.ConfigurationBuilder
308:                                        .getControlType(svcType));
309:                try {
310:                    if (envCtx.getMBeanServer().isRegistered(configMBeanName)) {
311:                        envCtx.getMBeanServer().invoke(configMBeanName,
312:                                "deleteOverride", new Object[] { logName },
313:                                new String[] { "java.lang.String" });
314:                    } else {
315:                        aLogger.finest("MBean " + configMBeanName
316:                                + "is not registered");
317:                    }
318:                } catch (javax.management.JMException jmex) {
319:                    aLogger.warning(jmex.toString());
320:                }
321:            }
322:
323:            /**
324:             * @return the object name of the Logger Configuration MBean on the instance
325:             */
326:            public static ObjectName getLoggerConfigMBeanName() {
327:                MBeanNames.ServiceType svcType = MBeanNames.ServiceType
328:                        .valueOf(com.sun.jbi.management.ConfigurationCategory.Logger
329:                                .toString());
330:
331:                return com.sun.jbi.util.EnvironmentAccess
332:                        .getContext()
333:                        .getMBeanNames()
334:                        .getSystemServiceMBeanName(
335:                                MBeanNames.SERVICE_NAME_CONFIG_SERVICE,
336:                                com.sun.jbi.management.config.ConfigurationBuilder
337:                                        .getControlType(svcType));
338:            }
339:
340:            /**
341:             * @return the object name of the System Configuration MBean on the instance
342:             */
343:            public static ObjectName getSystemConfigMBeanName() {
344:                MBeanNames.ServiceType svcType = MBeanNames.ServiceType
345:                        .valueOf(com.sun.jbi.management.ConfigurationCategory.System
346:                                .toString());
347:
348:                return com.sun.jbi.util.EnvironmentAccess
349:                        .getContext()
350:                        .getMBeanNames()
351:                        .getSystemServiceMBeanName(
352:                                MBeanNames.SERVICE_NAME_CONFIG_SERVICE,
353:                                com.sun.jbi.management.config.ConfigurationBuilder
354:                                        .getControlType(svcType));
355:            }
356:        }
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