001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.management;
018
019import java.net.UnknownHostException;
020import java.util.concurrent.ThreadPoolExecutor;
021
022import javax.management.MalformedObjectNameException;
023import javax.management.ObjectName;
024
025import org.apache.camel.CamelContext;
026import org.apache.camel.CamelContextAware;
027import org.apache.camel.Component;
028import org.apache.camel.Consumer;
029import org.apache.camel.Endpoint;
030import org.apache.camel.ErrorHandlerFactory;
031import org.apache.camel.NamedNode;
032import org.apache.camel.Processor;
033import org.apache.camel.Producer;
034import org.apache.camel.Route;
035import org.apache.camel.Service;
036import org.apache.camel.StaticService;
037import org.apache.camel.builder.ErrorHandlerBuilderRef;
038import org.apache.camel.cluster.CamelClusterService;
039import org.apache.camel.management.mbean.ManagedBacklogDebugger;
040import org.apache.camel.management.mbean.ManagedBacklogTracer;
041import org.apache.camel.management.mbean.ManagedCamelContext;
042import org.apache.camel.management.mbean.ManagedCamelHealth;
043import org.apache.camel.management.mbean.ManagedClusterService;
044import org.apache.camel.management.mbean.ManagedComponent;
045import org.apache.camel.management.mbean.ManagedConsumer;
046import org.apache.camel.management.mbean.ManagedDataFormat;
047import org.apache.camel.management.mbean.ManagedEndpoint;
048import org.apache.camel.management.mbean.ManagedErrorHandler;
049import org.apache.camel.management.mbean.ManagedEventNotifier;
050import org.apache.camel.management.mbean.ManagedProcessor;
051import org.apache.camel.management.mbean.ManagedProducer;
052import org.apache.camel.management.mbean.ManagedRoute;
053import org.apache.camel.management.mbean.ManagedRouteController;
054import org.apache.camel.management.mbean.ManagedService;
055import org.apache.camel.management.mbean.ManagedStep;
056import org.apache.camel.management.mbean.ManagedThreadPool;
057import org.apache.camel.reifier.errorhandler.ErrorHandlerReifier;
058import org.apache.camel.spi.DataFormat;
059import org.apache.camel.spi.EventNotifier;
060import org.apache.camel.spi.ManagementObjectNameStrategy;
061import org.apache.camel.spi.RouteContext;
062import org.apache.camel.util.InetAddressUtil;
063import org.apache.camel.util.ObjectHelper;
064import org.apache.camel.util.URISupport;
065
066/**
067 * Naming strategy used when registering MBeans.
068 */
069public class DefaultManagementObjectNameStrategy implements ManagementObjectNameStrategy, CamelContextAware {
070    public static final String VALUE_UNKNOWN = "unknown";
071    public static final String KEY_NAME = "name";
072    public static final String KEY_TYPE = "type";
073    public static final String KEY_CONTEXT = "context";
074    public static final String TYPE_CONTEXT = "context";
075    public static final String TYPE_ROUTE_CONTROLLER = "routecontrollers";
076    public static final String TYPE_HEALTH = "health";
077    public static final String TYPE_ENDPOINT = "endpoints";
078    public static final String TYPE_DATAFORMAT = "dataformats";
079    public static final String TYPE_PROCESSOR = "processors";
080    public static final String TYPE_CONSUMER = "consumers";
081    public static final String TYPE_PRODUCER = "producers";
082    public static final String TYPE_ROUTE = "routes";
083    public static final String TYPE_COMPONENT = "components";
084    public static final String TYPE_STEP = "steps";
085    public static final String TYPE_TRACER = "tracer";
086    public static final String TYPE_EVENT_NOTIFIER = "eventnotifiers";
087    public static final String TYPE_ERRORHANDLER = "errorhandlers";
088    public static final String TYPE_THREAD_POOL = "threadpools";
089    public static final String TYPE_SERVICE = "services";
090    public static final String TYPE_HA = "clusterservices";
091
092    protected String domainName;
093    protected String hostName = "localhost";
094    protected CamelContext camelContext;
095
096    public DefaultManagementObjectNameStrategy() {
097        this(null);
098        // default constructor needed for <bean> style configuration
099    }
100
101    public DefaultManagementObjectNameStrategy(String domainName) {
102        this.domainName = domainName != null ? domainName : "org.apache.camel";
103        try {
104            hostName = InetAddressUtil.getLocalHostName();
105        } catch (UnknownHostException ex) {
106            // ignore, use the default "localhost"
107        }
108    }
109
110    public CamelContext getCamelContext() {
111        return camelContext;
112    }
113
114    public void setCamelContext(CamelContext camelContext) {
115        this.camelContext = camelContext;
116    }
117
118    public ObjectName getObjectName(Object managedObject) throws MalformedObjectNameException {
119        if (managedObject == null) {
120            return null;
121        }
122        ObjectName objectName = null;
123        if (managedObject instanceof ManagedCamelContext) {
124            ManagedCamelContext mcc = (ManagedCamelContext) managedObject;
125            objectName = getObjectNameForCamelContext(mcc.getContext());
126        } else if (managedObject instanceof ManagedCamelHealth) {
127            ManagedCamelHealth mch = (ManagedCamelHealth) managedObject;
128            objectName = getObjectNameForCamelHealth(mch.getContext());
129        } else if (managedObject instanceof ManagedRouteController) {
130            ManagedRouteController mrc = (ManagedRouteController) managedObject;
131            objectName = getObjectNameForRouteController(mrc.getContext());
132        } else if (managedObject instanceof ManagedComponent) {
133            ManagedComponent mc = (ManagedComponent) managedObject;
134            objectName = getObjectNameForComponent(mc.getComponent(), mc.getComponentName());
135        } else if (managedObject instanceof ManagedDataFormat) {
136            ManagedDataFormat md = (ManagedDataFormat) managedObject;
137            objectName = getObjectNameForDataFormat(md.getContext(), md.getDataFormat());
138        } else if (managedObject instanceof ManagedEndpoint) {
139            ManagedEndpoint me = (ManagedEndpoint) managedObject;
140            objectName = getObjectNameForEndpoint(me.getEndpoint());
141        } else if (managedObject instanceof Endpoint) {
142            objectName = getObjectNameForEndpoint((Endpoint) managedObject);
143        } else if (managedObject instanceof ManagedRoute) {
144            ManagedRoute mr = (ManagedRoute) managedObject;
145            objectName = getObjectNameForRoute(mr.getRoute());
146        } else if (managedObject instanceof ManagedErrorHandler) {
147            ManagedErrorHandler meh = (ManagedErrorHandler) managedObject;
148            objectName = getObjectNameForErrorHandler(meh.getRouteContext(), meh.getErrorHandler(), meh.getErrorHandlerBuilder());
149        } else if (managedObject instanceof ManagedStep) {
150            ManagedStep mp = (ManagedStep) managedObject;
151            objectName = getObjectNameForStep(mp.getContext(), mp.getProcessor(), mp.getDefinition());
152        } else if (managedObject instanceof ManagedProcessor) {
153            ManagedProcessor mp = (ManagedProcessor) managedObject;
154            objectName = getObjectNameForProcessor(mp.getContext(), mp.getProcessor(), mp.getDefinition());
155        } else if (managedObject instanceof ManagedConsumer) {
156            ManagedConsumer ms = (ManagedConsumer) managedObject;
157            objectName = getObjectNameForConsumer(ms.getContext(), ms.getConsumer());
158        } else if (managedObject instanceof ManagedProducer) {
159            ManagedProducer ms = (ManagedProducer) managedObject;
160            objectName = getObjectNameForProducer(ms.getContext(), ms.getProducer());
161        } else if (managedObject instanceof ManagedBacklogTracer) {
162            ManagedBacklogTracer mt = (ManagedBacklogTracer) managedObject;
163            objectName = getObjectNameForTracer(mt.getContext(), mt.getBacklogTracer());
164        } else if (managedObject instanceof ManagedBacklogDebugger) {
165            ManagedBacklogDebugger md = (ManagedBacklogDebugger) managedObject;
166            objectName = getObjectNameForTracer(md.getContext(), md.getBacklogDebugger());
167        } else if (managedObject instanceof ManagedEventNotifier) {
168            ManagedEventNotifier men = (ManagedEventNotifier) managedObject;
169            objectName = getObjectNameForEventNotifier(men.getContext(), men.getEventNotifier());
170        } else if (managedObject instanceof ManagedThreadPool) {
171            ManagedThreadPool mes = (ManagedThreadPool) managedObject;
172            objectName = getObjectNameForThreadPool(mes.getContext(), mes.getThreadPool(), mes.getId(), mes.getSourceId());
173        } else if (managedObject instanceof ManagedClusterService) {
174            ManagedClusterService mcs = (ManagedClusterService) managedObject;
175            objectName = getObjectNameForClusterService(mcs.getContext(), mcs.getService());
176        } else if (managedObject instanceof ManagedService) {
177            // check for managed service should be last
178            ManagedService ms = (ManagedService) managedObject;
179            // skip endpoints as they are already managed
180            if (ms.getService() instanceof Endpoint) {
181                return null;
182            }
183            objectName = getObjectNameForService(ms.getContext(), ms.getService());
184        }
185
186        return objectName;
187    }
188
189    public ObjectName getObjectNameForCamelContext(String managementName, String name) throws MalformedObjectNameException {
190        StringBuilder buffer = new StringBuilder();
191        buffer.append(domainName).append(":");
192        buffer.append(KEY_CONTEXT + "=").append(getContextId(managementName)).append(",");
193        buffer.append(KEY_TYPE + "=" + TYPE_CONTEXT + ",");
194        buffer.append(KEY_NAME + "=").append(ObjectName.quote(name));
195        return createObjectName(buffer);
196    }
197
198    public ObjectName getObjectNameForCamelContext(CamelContext context) throws MalformedObjectNameException {
199        // prefer to use the given management name if previously assigned
200        String managementName = context.getManagementName();
201        if (managementName == null) {
202            managementName = context.getManagementNameStrategy().getName();
203        }
204        String name = context.getName();
205        return getObjectNameForCamelContext(managementName, name);
206    }
207
208    @Override
209    public ObjectName getObjectNameForCamelHealth(CamelContext context) throws MalformedObjectNameException {
210        // prefer to use the given management name if previously assigned
211        String managementName = context.getManagementName();
212        if (managementName == null) {
213            managementName = context.getManagementNameStrategy().getName();
214        }
215
216        StringBuilder buffer = new StringBuilder();
217        buffer.append(domainName).append(":");
218        buffer.append(KEY_CONTEXT + "=").append(getContextId(managementName)).append(",");
219        buffer.append(KEY_TYPE + "=" + TYPE_HEALTH + ",");
220        buffer.append(KEY_NAME + "=").append(ObjectName.quote(context.getName()));
221
222        return createObjectName(buffer);
223    }
224
225    @Override
226    public ObjectName getObjectNameForRouteController(CamelContext context) throws MalformedObjectNameException {
227        // prefer to use the given management name if previously assigned
228        String managementName = context.getManagementName();
229        if (managementName == null) {
230            managementName = context.getManagementNameStrategy().getName();
231        }
232
233        StringBuilder buffer = new StringBuilder();
234        buffer.append(domainName).append(":");
235        buffer.append(KEY_CONTEXT + "=").append(getContextId(managementName)).append(",");
236        buffer.append(KEY_TYPE + "=" + TYPE_ROUTE_CONTROLLER + ",");
237        buffer.append(KEY_NAME + "=").append(ObjectName.quote(context.getName()));
238
239        return createObjectName(buffer);
240    }
241
242    public ObjectName getObjectNameForEndpoint(Endpoint endpoint) throws MalformedObjectNameException {
243        StringBuilder buffer = new StringBuilder();
244        buffer.append(domainName).append(":");
245        buffer.append(KEY_CONTEXT + "=").append(getContextId(endpoint.getCamelContext())).append(",");
246        buffer.append(KEY_TYPE + "=" + TYPE_ENDPOINT + ",");
247        buffer.append(KEY_NAME + "=").append(ObjectName.quote(getEndpointId(endpoint)));
248        return createObjectName(buffer);
249    }
250
251    public ObjectName getObjectNameForDataFormat(CamelContext context, DataFormat dataFormat) throws MalformedObjectNameException {
252        StringBuilder buffer = new StringBuilder();
253        buffer.append(domainName).append(":");
254        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
255        buffer.append(KEY_TYPE + "=" + TYPE_DATAFORMAT + ",");
256        buffer.append(KEY_NAME + "=").append(dataFormat.getClass().getSimpleName());
257        if (!(dataFormat instanceof StaticService)) {
258            buffer.append("(").append(ObjectHelper.getIdentityHashCode(dataFormat)).append(")");
259        }
260        return createObjectName(buffer);
261    }
262
263    public ObjectName getObjectNameForComponent(Component component, String name) throws MalformedObjectNameException {
264        StringBuilder buffer = new StringBuilder();
265        buffer.append(domainName).append(":");
266        buffer.append(KEY_CONTEXT + "=").append(getContextId(component.getCamelContext())).append(",");
267        buffer.append(KEY_TYPE + "=" + TYPE_COMPONENT + ",");
268        buffer.append(KEY_NAME + "=").append(ObjectName.quote(name));
269        return createObjectName(buffer);
270    }
271
272    public ObjectName getObjectNameForProcessor(CamelContext context, Processor processor, NamedNode definition) throws MalformedObjectNameException {
273        StringBuilder buffer = new StringBuilder();
274        buffer.append(domainName).append(":");
275        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
276        buffer.append(KEY_TYPE + "=").append(TYPE_PROCESSOR).append(",");
277        buffer.append(KEY_NAME + "=").append(ObjectName.quote(definition.getId()));
278        return createObjectName(buffer);
279    }
280
281    public ObjectName getObjectNameForStep(CamelContext context, Processor processor, NamedNode definition) throws MalformedObjectNameException {
282        StringBuilder buffer = new StringBuilder();
283        buffer.append(domainName).append(":");
284        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
285        buffer.append(KEY_TYPE + "=").append(TYPE_STEP).append(",");
286        buffer.append(KEY_NAME + "=").append(ObjectName.quote(definition.getId()));
287        return createObjectName(buffer);
288    }
289
290    public ObjectName getObjectNameForErrorHandler(RouteContext routeContext, Processor errorHandler, ErrorHandlerFactory builder) throws MalformedObjectNameException {
291        StringBuilder buffer = new StringBuilder();
292        buffer.append(domainName).append(":");
293        buffer.append(KEY_CONTEXT + "=").append(getContextId(routeContext.getCamelContext())).append(",");
294        buffer.append(KEY_TYPE + "=").append(TYPE_ERRORHANDLER + ",");
295
296        // we want to only register one instance of the various error handler types and thus do some lookup
297        // if its a ErrorHandlerBuildRef. We need a bit of work to do that as there are potential indirection.
298        String ref = null;
299        if (builder instanceof ErrorHandlerBuilderRef) {
300            ErrorHandlerBuilderRef builderRef = (ErrorHandlerBuilderRef) builder;
301
302            // it has not then its an indirection and we should do some work to lookup the real builder
303            ref = builderRef.getRef();
304            ErrorHandlerFactory refBuilder = ErrorHandlerReifier.lookupErrorHandlerFactory(routeContext, builderRef.getRef(), false);
305            if (refBuilder != null) {
306                builder = refBuilder;
307            }
308
309            // must do a 2nd lookup in case this is also a reference
310            // (this happens with spring DSL using errorHandlerRef on <route> as it gets a bit
311            // complex with indirections for error handler references
312            if (builder instanceof ErrorHandlerBuilderRef) {
313                builderRef = (ErrorHandlerBuilderRef) builder;
314                // does it refer to a non default error handler then do a 2nd lookup
315                if (!builderRef.getRef().equals(ErrorHandlerReifier.DEFAULT_ERROR_HANDLER_BUILDER)) {
316                    refBuilder = ErrorHandlerReifier.lookupErrorHandlerFactory(routeContext, builderRef.getRef(), false);
317                    if (refBuilder != null) {
318                        ref = builderRef.getRef();
319                        builder = refBuilder;
320                    }
321                }
322            }
323        }
324
325        if (ref != null) {
326            String name = builder.getClass().getSimpleName() + "(ref:" + ref + ")";
327            buffer.append(KEY_NAME + "=").append(ObjectName.quote(name));
328        } else {
329            // create a name based on its instance
330            buffer.append(KEY_NAME + "=")
331                .append(builder.getClass().getSimpleName())
332                .append("(").append(ObjectHelper.getIdentityHashCode(builder)).append(")");
333        }
334
335        return createObjectName(buffer);
336    }
337
338    public ObjectName getObjectNameForConsumer(CamelContext context, Consumer consumer) throws MalformedObjectNameException {
339        StringBuilder buffer = new StringBuilder();
340        buffer.append(domainName).append(":");
341        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
342        buffer.append(KEY_TYPE + "=").append(TYPE_CONSUMER).append(",");
343
344        String name = consumer.getClass().getSimpleName();
345        if (ObjectHelper.isEmpty(name)) {
346            name = "Consumer";
347        }
348        buffer.append(KEY_NAME + "=")
349            .append(name)
350            .append("(").append(ObjectHelper.getIdentityHashCode(consumer)).append(")");
351        return createObjectName(buffer);
352    }
353
354    public ObjectName getObjectNameForProducer(CamelContext context, Producer producer) throws MalformedObjectNameException {
355        StringBuilder buffer = new StringBuilder();
356        buffer.append(domainName).append(":");
357        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
358        buffer.append(KEY_TYPE + "=").append(TYPE_PRODUCER).append(",");
359
360        String name = producer.getClass().getSimpleName();
361        if (ObjectHelper.isEmpty(name)) {
362            name = "Producer";
363        }
364        buffer.append(KEY_NAME + "=")
365            .append(name)
366            .append("(").append(ObjectHelper.getIdentityHashCode(producer)).append(")");
367        return createObjectName(buffer);
368    }
369
370    public ObjectName getObjectNameForTracer(CamelContext context, Service tracer) throws MalformedObjectNameException {
371        // use the simple name of the class as the mbean name (eg Tracer, BacklogTracer, BacklogDebugger)
372        String name = tracer.getClass().getSimpleName();
373
374        StringBuilder buffer = new StringBuilder();
375        buffer.append(domainName).append(":");
376        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
377        buffer.append(KEY_TYPE + "=" + TYPE_TRACER + ",");
378        buffer.append(KEY_NAME + "=").append(name);
379        return createObjectName(buffer);
380    }
381
382    public ObjectName getObjectNameForEventNotifier(CamelContext context, EventNotifier eventNotifier) throws MalformedObjectNameException {
383        StringBuilder buffer = new StringBuilder();
384        buffer.append(domainName).append(":");
385        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
386        buffer.append(KEY_TYPE + "=" + TYPE_EVENT_NOTIFIER + ",");
387
388        if (eventNotifier instanceof JmxNotificationEventNotifier) {
389            // JMX notifier shall have an easy to use name
390            buffer.append(KEY_NAME + "=").append("JmxEventNotifier");
391        } else {
392            // others can be per instance
393            buffer.append(KEY_NAME + "=")
394                .append("EventNotifier")
395                .append("(").append(ObjectHelper.getIdentityHashCode(eventNotifier)).append(")");
396        }
397        return createObjectName(buffer);
398    }
399
400    public ObjectName getObjectNameForRoute(Route route) throws MalformedObjectNameException {
401        Endpoint ep = route.getEndpoint();
402        String id = route.getId();
403
404        StringBuilder buffer = new StringBuilder();
405        buffer.append(domainName).append(":");
406        buffer.append(KEY_CONTEXT + "=").append(getContextId(ep.getCamelContext())).append(",");
407        buffer.append(KEY_TYPE + "=" + TYPE_ROUTE + ",");
408        buffer.append(KEY_NAME + "=").append(ObjectName.quote(id));
409        return createObjectName(buffer);
410    }
411
412    public ObjectName getObjectNameForService(CamelContext context, Service service) throws MalformedObjectNameException {
413        StringBuilder buffer = new StringBuilder();
414        buffer.append(domainName).append(":");
415        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
416        buffer.append(KEY_TYPE + "=" + TYPE_SERVICE + ",");
417        buffer.append(KEY_NAME + "=").append(service.getClass().getSimpleName());
418        if (!(service instanceof StaticService)) {
419            buffer.append("(").append(ObjectHelper.getIdentityHashCode(service)).append(")");
420        }
421        return createObjectName(buffer);
422    }
423
424    public ObjectName getObjectNameForClusterService(CamelContext context, CamelClusterService service) throws MalformedObjectNameException {
425        StringBuilder buffer = new StringBuilder();
426        buffer.append(domainName).append(":");
427        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
428        buffer.append(KEY_TYPE + "=" + TYPE_HA + ",");
429        buffer.append(KEY_NAME + "=").append(service.getClass().getSimpleName());
430        if (!(service instanceof StaticService)) {
431            buffer.append("(").append(ObjectHelper.getIdentityHashCode(service)).append(")");
432        }
433        return createObjectName(buffer);
434    }
435
436    public ObjectName getObjectNameForThreadPool(CamelContext context, ThreadPoolExecutor threadPool, String id, String sourceId) throws MalformedObjectNameException {
437        StringBuilder buffer = new StringBuilder();
438        buffer.append(domainName).append(":");
439        buffer.append(KEY_CONTEXT + "=").append(getContextId(context)).append(",");
440        buffer.append(KEY_TYPE + "=" + TYPE_THREAD_POOL + ",");
441
442        String name = id;
443        if (sourceId != null) {
444            // provide source id if we know it, this helps end user to know where the pool is used
445            name = name + "(" + sourceId + ")";
446        }
447        buffer.append(KEY_NAME + "=").append(ObjectName.quote(name));
448        return createObjectName(buffer);
449    }
450
451    public String getDomainName() {
452        return domainName;
453    }
454
455    public void setDomainName(String domainName) {
456        this.domainName = domainName;
457    }
458
459    public String getHostName() {
460        return hostName;
461    }
462
463    public void setHostName(String hostName) {
464        this.hostName = hostName;
465    }
466
467    protected String getContextId(CamelContext context) {
468        if (context == null) {
469            return getContextId(VALUE_UNKNOWN);
470        } else {
471            String name = context.getManagementName() != null ? context.getManagementName() : context.getName();
472            return getContextId(name);
473        }
474    }
475
476    protected String getContextId(String name) {
477        Boolean includeHostName = camelContext != null && camelContext.getManagementStrategy().getManagementAgent().getIncludeHostName();
478        if (includeHostName != null && includeHostName) {
479            return hostName + "/" + (name != null ? name : VALUE_UNKNOWN);
480        } else {
481            return name != null ? name : VALUE_UNKNOWN;
482        }
483    }
484
485    protected String getEndpointId(Endpoint ep) {
486        String answer = doGetEndpointId(ep);
487        Boolean sanitize = camelContext != null && camelContext.getManagementStrategy().getManagementAgent().getMask();
488        if (sanitize != null && sanitize) {
489            // use xxxxxx as replacements as * has to be quoted for MBean names
490            answer = URISupport.sanitizeUri(answer);
491        }
492        return answer;
493    }
494
495    private String doGetEndpointId(Endpoint ep) {
496        if (ep.isSingleton()) {
497            return ep.getEndpointKey();
498        } else {
499            // non singleton then add hashcoded id
500            String uri = ep.getEndpointKey();
501            int pos = uri.indexOf('?');
502            String id = (pos == -1) ? uri : uri.substring(0, pos);
503            id += "?id=" + ObjectHelper.getIdentityHashCode(ep);
504            return id;
505        }
506    }
507
508    /**
509     * Factory method to create an ObjectName escaping any required characters
510     */
511    protected ObjectName createObjectName(StringBuilder buffer) throws MalformedObjectNameException {
512        String text = buffer.toString();
513        try {
514            return new ObjectName(text);
515        } catch (MalformedObjectNameException e) {
516            throw new MalformedObjectNameException("Could not create ObjectName from: " + text + ". Reason: " + e);
517        }
518    }
519}