camel-core/src/main/java/org/apache/camel/impl/DefaultExecutorServiceStrategy.java - camel - Git at Google

 /**
  * 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.camel.impl;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.RejectedExecutionHandler;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;

 import org.apache.camel.CamelContext;
 import org.apache.camel.ThreadPoolRejectedPolicy;
 import org.apache.camel.spi.ExecutorServiceStrategy;
 import org.apache.camel.spi.LifecycleStrategy;
 import org.apache.camel.spi.ThreadPoolProfile;
 import org.apache.camel.util.ObjectHelper;
 import org.apache.camel.util.concurrent.ExecutorServiceHelper;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;

 /**
  * @version $Revision$
  */
 public class DefaultExecutorServiceStrategy extends ServiceSupport implements ExecutorServiceStrategy {

     private static final Log LOG = LogFactory.getLog(DefaultExecutorServiceStrategy.class);
     private final List<ExecutorService> executorServices = new ArrayList<ExecutorService>();
     private final CamelContext camelContext;
     private String threadNamePattern = "Camel Thread ${counter} - ${name}";
     private String defaultThreadPoolProfileId;
     private final Map<String, ThreadPoolProfile> threadPoolProfiles = new HashMap<String, ThreadPoolProfile>();

     public DefaultExecutorServiceStrategy(CamelContext camelContext) {
         this.camelContext = camelContext;

         // create and register the default profile
         this.defaultThreadPoolProfileId = "defaultThreadPoolProfile";
         ThreadPoolProfile defaultProfile = new ThreadPoolProfileSupport(defaultThreadPoolProfileId);
         // the default profile has the following values
         defaultProfile.setDefaultProfile(true);
         defaultProfile.setPoolSize(10);
         defaultProfile.setMaxPoolSize(20);
         defaultProfile.setKeepAliveTime(60L);
         defaultProfile.setTimeUnit(TimeUnit.SECONDS);
         defaultProfile.setMaxQueueSize(1000);
         defaultProfile.setRejectedPolicy(ThreadPoolRejectedPolicy.CallerRuns);
         registerThreadPoolProfile(defaultProfile);
     }

     public void registerThreadPoolProfile(ThreadPoolProfile profile) {
         threadPoolProfiles.put(profile.getId(), profile);
     }

     public ThreadPoolProfile getThreadPoolProfile(String id) {
         return threadPoolProfiles.get(id);
     }

     public ThreadPoolProfile getDefaultThreadPoolProfile() {
         return getThreadPoolProfile(defaultThreadPoolProfileId);
     }

     public void setDefaultThreadPoolProfile(ThreadPoolProfile defaultThreadPoolProfile) {
         ThreadPoolProfile oldProfile = threadPoolProfiles.remove(defaultThreadPoolProfileId);
         if (oldProfile != null) {
             // the old is no longer default
             oldProfile.setDefaultProfile(false);

             // fallback and use old default values for new default profile if absent (convention over configuration)
             if (defaultThreadPoolProfile.getKeepAliveTime() == null) {
                 defaultThreadPoolProfile.setKeepAliveTime(oldProfile.getKeepAliveTime());
             }
             if (defaultThreadPoolProfile.getMaxPoolSize() == null) {
                 defaultThreadPoolProfile.setMaxPoolSize(oldProfile.getMaxPoolSize());
             }
             if (defaultThreadPoolProfile.getRejectedPolicy() == null) {
                 defaultThreadPoolProfile.setRejectedPolicy(oldProfile.getRejectedPolicy());
             }
             if (defaultThreadPoolProfile.getMaxQueueSize() == null) {
                 defaultThreadPoolProfile.setMaxQueueSize(oldProfile.getMaxQueueSize());
             }
             if (defaultThreadPoolProfile.getPoolSize() == null) {
                 defaultThreadPoolProfile.setPoolSize(oldProfile.getPoolSize());
             }
             if (defaultThreadPoolProfile.getTimeUnit() == null) {
                 defaultThreadPoolProfile.setTimeUnit(oldProfile.getTimeUnit());
             }
         }

         // validate that all options has been given as its mandatory for a default thread pool profile
         // as it is used as fallback for other profiles if they do not have that particular value
         ObjectHelper.notEmpty(defaultThreadPoolProfile.getId(), "id", defaultThreadPoolProfile);
         ObjectHelper.notNull(defaultThreadPoolProfile.getKeepAliveTime(), "keepAliveTime", defaultThreadPoolProfile);
         ObjectHelper.notNull(defaultThreadPoolProfile.getMaxPoolSize(), "maxPoolSize", defaultThreadPoolProfile);
         ObjectHelper.notNull(defaultThreadPoolProfile.getMaxQueueSize(), "maxQueueSize", defaultThreadPoolProfile);
         ObjectHelper.notNull(defaultThreadPoolProfile.getPoolSize(), "poolSize", defaultThreadPoolProfile);
         ObjectHelper.notNull(defaultThreadPoolProfile.getTimeUnit(), "timeUnit", defaultThreadPoolProfile);

         LOG.info("Using custom DefaultThreadPoolProfile: " + defaultThreadPoolProfile);

         // and replace with the new default profile
         this.defaultThreadPoolProfileId = defaultThreadPoolProfile.getId();
         // and mark the new profile as default
         defaultThreadPoolProfile.setDefaultProfile(true);
         registerThreadPoolProfile(defaultThreadPoolProfile);
     }

     public String getThreadName(String name) {
         return ExecutorServiceHelper.getThreadName(threadNamePattern, name);
     }

     public String getThreadNamePattern() {
         return threadNamePattern;
     }

     public void setThreadNamePattern(String threadNamePattern) {
         this.threadNamePattern = threadNamePattern;
     }

     public ExecutorService lookup(Object source, String name, String executorServiceRef) {
         ExecutorService answer = camelContext.getRegistry().lookup(executorServiceRef, ExecutorService.class);
         if (answer != null && LOG.isDebugEnabled()) {
             if (LOG.isDebugEnabled()) {
                 LOG.debug("Looking up ExecutorService with ref: " + executorServiceRef + " and found it from Registry: " + answer);
             }
         }

         if (answer == null) {
             // try to see if we got a thread pool profile with that id
             answer = newThreadPool(source, name, executorServiceRef);
             if (answer != null && LOG.isDebugEnabled()) {
                 LOG.debug("Looking up ExecutorService with ref: " + executorServiceRef
                         + " and found a matching ThreadPoolProfile to create the ExecutorService: " + answer);
             }
         }

         return answer;
     }

     public ExecutorService newDefaultThreadPool(Object source, String name) {
         ThreadPoolProfile profile = getDefaultThreadPoolProfile();
         ObjectHelper.notNull(profile, "DefaultThreadPoolProfile");

         return newThreadPool(source, name,
             profile.getPoolSize(), profile.getMaxPoolSize(),
             profile.getKeepAliveTime(), profile.getTimeUnit(),
             profile.getMaxQueueSize(), profile.getRejectedExecutionHandler(), false);
     }

     public ExecutorService newThreadPool(Object source, String name, String threadPoolProfileId) {
         ThreadPoolProfile defaultProfile = getDefaultThreadPoolProfile();
         ThreadPoolProfile profile = getThreadPoolProfile(threadPoolProfileId);
         if (profile != null) {
             // fallback to use values from default profile if not specified
             Integer poolSize = profile.getPoolSize() != null ? profile.getPoolSize() : defaultProfile.getPoolSize();
             Integer maxPoolSize = profile.getMaxPoolSize() != null ? profile.getMaxPoolSize() : defaultProfile.getMaxPoolSize();
             Long keepAliveTime = profile.getKeepAliveTime() != null ? profile.getKeepAliveTime() : defaultProfile.getKeepAliveTime();
             TimeUnit timeUnit = profile.getTimeUnit() != null ? profile.getTimeUnit() : defaultProfile.getTimeUnit();
             Integer maxQueueSize = profile.getMaxQueueSize() != null ? profile.getMaxQueueSize() : defaultProfile.getMaxQueueSize();
             RejectedExecutionHandler handler = profile.getRejectedExecutionHandler() != null ? profile.getRejectedExecutionHandler() : defaultProfile.getRejectedExecutionHandler();
             // create the pool
             return newThreadPool(source, name, poolSize, maxPoolSize, keepAliveTime, timeUnit, maxQueueSize, handler, false);
         } else {
             // no profile with that id
             return null;
         }
     }

     public ExecutorService newCachedThreadPool(Object source, String name) {
         ExecutorService answer = ExecutorServiceHelper.newCachedThreadPool(threadNamePattern, name, true);
         onThreadPoolCreated(answer);

         if (LOG.isDebugEnabled()) {
             LOG.debug("Created new cached thread pool for source: " + source + " with name: " + name + ". -> " + answer);
         }
         return answer;
     }

     public ScheduledExecutorService newScheduledThreadPool(Object source, String name, int poolSize) {
         ScheduledExecutorService answer = ExecutorServiceHelper.newScheduledThreadPool(poolSize, threadNamePattern, name, true);
         onThreadPoolCreated(answer);

         if (LOG.isDebugEnabled()) {
             LOG.debug("Created new scheduled thread pool for source: " + source + " with name: " + name + ". [poolSize=" + poolSize + "]. -> " + answer);
         }
         return answer;
     }

     public ExecutorService newFixedThreadPool(Object source, String name, int poolSize) {
         ExecutorService answer = ExecutorServiceHelper.newFixedThreadPool(poolSize, threadNamePattern, name, true);
         onThreadPoolCreated(answer);

         if (LOG.isDebugEnabled()) {
             LOG.debug("Created new fixed thread pool for source: " + source + " with name: " + name + ". [poolSize=" + poolSize + "]. -> " + answer);
         }
         return answer;
     }

     public ExecutorService newSingleThreadExecutor(Object source, String name) {
         ExecutorService answer = ExecutorServiceHelper.newSingleThreadExecutor(threadNamePattern, name, true);
         onThreadPoolCreated(answer);

         if (LOG.isDebugEnabled()) {
             LOG.debug("Created new single thread pool for source: " + source + " with name: " + name + ". -> " + answer);
         }
         return answer;
     }

     public ExecutorService newThreadPool(Object source, String name, int corePoolSize, int maxPoolSize) {
         ExecutorService answer = ExecutorServiceHelper.newThreadPool(threadNamePattern, name, corePoolSize, maxPoolSize);
         onThreadPoolCreated(answer);

         if (LOG.isDebugEnabled()) {
             LOG.debug("Created new thread pool for source: " + source + " with name: " + name + ". [poolSize=" + corePoolSize
                     + ", maxPoolSize=" + maxPoolSize + "] -> " + answer);
         }
         return answer;
     }

     public ExecutorService newThreadPool(Object source, String name, int corePoolSize, int maxPoolSize, long keepAliveTime,
                                          TimeUnit timeUnit, int maxQueueSize, RejectedExecutionHandler rejectedExecutionHandler,
                                          boolean daemon) {

         // the thread name must not be null
         ObjectHelper.notNull(name, "ThreadName");

         ExecutorService answer = ExecutorServiceHelper.newThreadPool(threadNamePattern, name, corePoolSize, maxPoolSize, keepAliveTime,
                                                                      timeUnit, maxQueueSize, rejectedExecutionHandler, daemon);
         onThreadPoolCreated(answer);

         if (LOG.isDebugEnabled()) {
             LOG.debug("Created new thread pool for source: " + source + " with name: " + name + ". [poolSize=" + corePoolSize
                     + ", maxPoolSize=" + maxPoolSize + ", keepAliveTime=" + keepAliveTime + " " + timeUnit
                     + ", maxQueueSize=" + maxQueueSize + ", rejectedExecutionHandler=" + rejectedExecutionHandler
                     + ", daemon=" + daemon + "] -> " + answer);
         }
         return answer;
     }

     public void shutdown(ExecutorService executorService) {
         ObjectHelper.notNull(executorService, "executorService");

         if (executorService.isShutdown()) {
             return;
         }

         if (LOG.isDebugEnabled()) {
             LOG.debug("Shutdown ExecutorService: " + executorService);
         }
         executorService.shutdown();
         if (LOG.isTraceEnabled()) {
             LOG.trace("Shutdown ExecutorService: " + executorService + " complete.");
         }
     }

     public List<Runnable> shutdownNow(ExecutorService executorService) {
         ObjectHelper.notNull(executorService, "executorService");

         if (executorService.isShutdown()) {
             return null;
         }

         if (LOG.isDebugEnabled()) {
             LOG.debug("ShutdownNow ExecutorService: " + executorService);
         }
         List<Runnable> answer = executorService.shutdownNow();
         if (LOG.isTraceEnabled()) {
             LOG.trace("ShutdownNow ExecutorService: " + executorService + " complete.");
         }

         return answer;
     }

     private void onThreadPoolCreated(ExecutorService executorService) {
         // add to internal list of thread pools
         executorServices.add(executorService);

         // let lifecycle strategy be notified as well which can let it be managed in JMX as well
         if (executorService instanceof ThreadPoolExecutor) {
             ThreadPoolExecutor threadPool = (ThreadPoolExecutor) executorService;
             for (LifecycleStrategy lifecycle : camelContext.getLifecycleStrategies()) {
                 lifecycle.onThreadPoolAdd(camelContext, threadPool);
             }
         }

         // now call strategy to allow custom logic
         onNewExecutorService(executorService);
     }

     /**
      * Strategy callback when a new {@link java.util.concurrent.ExecutorService} have been created.
      *
      * @param executorService the created {@link java.util.concurrent.ExecutorService}
      */
     protected void onNewExecutorService(ExecutorService executorService) {
         // noop
     }

     @Override
     protected void doStart() throws Exception {
         // noop
     }

     @Override
     protected void doStop() throws Exception {
         // noop
     }

     @Override
     protected void doShutdown() throws Exception {
         // shutdown all executor services
         for (ExecutorService executorService : executorServices) {
             // only log if something goes wrong as we want to shutdown them all
             try {
                 shutdownNow(executorService);
             } catch (Throwable e) {
                 LOG.warn("Error occurred during shutdown of ExecutorService: "
                         + executorService + ". This exception will be ignored.", e);
             }
         }
         executorServices.clear();
         threadPoolProfiles.clear();
     }

 }
	/**
	* 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.camel.impl;

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.concurrent.ExecutorService;
	import java.util.concurrent.RejectedExecutionHandler;
	import java.util.concurrent.ScheduledExecutorService;
	import java.util.concurrent.ThreadPoolExecutor;
	import java.util.concurrent.TimeUnit;

	import org.apache.camel.CamelContext;
	import org.apache.camel.ThreadPoolRejectedPolicy;
	import org.apache.camel.spi.ExecutorServiceStrategy;
	import org.apache.camel.spi.LifecycleStrategy;
	import org.apache.camel.spi.ThreadPoolProfile;
	import org.apache.camel.util.ObjectHelper;
	import org.apache.camel.util.concurrent.ExecutorServiceHelper;
	import org.apache.commons.logging.Log;
	import org.apache.commons.logging.LogFactory;

	/**
	* @version $Revision$
	*/
	public class DefaultExecutorServiceStrategy extends ServiceSupport implements ExecutorServiceStrategy {

	private static final Log LOG = LogFactory.getLog(DefaultExecutorServiceStrategy.class);
	private final List<ExecutorService> executorServices = new ArrayList<ExecutorService>();
	private final CamelContext camelContext;
	private String threadNamePattern = "Camel Thread ${counter} - ${name}";
	private String defaultThreadPoolProfileId;
	private final Map<String, ThreadPoolProfile> threadPoolProfiles = new HashMap<String, ThreadPoolProfile>();

	public DefaultExecutorServiceStrategy(CamelContext camelContext) {
	this.camelContext = camelContext;

	// create and register the default profile
	this.defaultThreadPoolProfileId = "defaultThreadPoolProfile";
	ThreadPoolProfile defaultProfile = new ThreadPoolProfileSupport(defaultThreadPoolProfileId);
	// the default profile has the following values
	defaultProfile.setDefaultProfile(true);
	defaultProfile.setPoolSize(10);
	defaultProfile.setMaxPoolSize(20);
	defaultProfile.setKeepAliveTime(60L);
	defaultProfile.setTimeUnit(TimeUnit.SECONDS);
	defaultProfile.setMaxQueueSize(1000);
	defaultProfile.setRejectedPolicy(ThreadPoolRejectedPolicy.CallerRuns);
	registerThreadPoolProfile(defaultProfile);
	}

	public void registerThreadPoolProfile(ThreadPoolProfile profile) {
	threadPoolProfiles.put(profile.getId(), profile);
	}

	public ThreadPoolProfile getThreadPoolProfile(String id) {
	return threadPoolProfiles.get(id);
	}

	public ThreadPoolProfile getDefaultThreadPoolProfile() {
	return getThreadPoolProfile(defaultThreadPoolProfileId);
	}

	public void setDefaultThreadPoolProfile(ThreadPoolProfile defaultThreadPoolProfile) {
	ThreadPoolProfile oldProfile = threadPoolProfiles.remove(defaultThreadPoolProfileId);
	if (oldProfile != null) {
	// the old is no longer default
	oldProfile.setDefaultProfile(false);

	// fallback and use old default values for new default profile if absent (convention over configuration)
	if (defaultThreadPoolProfile.getKeepAliveTime() == null) {
	defaultThreadPoolProfile.setKeepAliveTime(oldProfile.getKeepAliveTime());
	}
	if (defaultThreadPoolProfile.getMaxPoolSize() == null) {
	defaultThreadPoolProfile.setMaxPoolSize(oldProfile.getMaxPoolSize());
	}
	if (defaultThreadPoolProfile.getRejectedPolicy() == null) {
	defaultThreadPoolProfile.setRejectedPolicy(oldProfile.getRejectedPolicy());
	}
	if (defaultThreadPoolProfile.getMaxQueueSize() == null) {
	defaultThreadPoolProfile.setMaxQueueSize(oldProfile.getMaxQueueSize());
	}
	if (defaultThreadPoolProfile.getPoolSize() == null) {
	defaultThreadPoolProfile.setPoolSize(oldProfile.getPoolSize());
	}
	if (defaultThreadPoolProfile.getTimeUnit() == null) {
	defaultThreadPoolProfile.setTimeUnit(oldProfile.getTimeUnit());
	}
	}

	// validate that all options has been given as its mandatory for a default thread pool profile
	// as it is used as fallback for other profiles if they do not have that particular value
	ObjectHelper.notEmpty(defaultThreadPoolProfile.getId(), "id", defaultThreadPoolProfile);
	ObjectHelper.notNull(defaultThreadPoolProfile.getKeepAliveTime(), "keepAliveTime", defaultThreadPoolProfile);
	ObjectHelper.notNull(defaultThreadPoolProfile.getMaxPoolSize(), "maxPoolSize", defaultThreadPoolProfile);
	ObjectHelper.notNull(defaultThreadPoolProfile.getMaxQueueSize(), "maxQueueSize", defaultThreadPoolProfile);
	ObjectHelper.notNull(defaultThreadPoolProfile.getPoolSize(), "poolSize", defaultThreadPoolProfile);
	ObjectHelper.notNull(defaultThreadPoolProfile.getTimeUnit(), "timeUnit", defaultThreadPoolProfile);

	LOG.info("Using custom DefaultThreadPoolProfile: " + defaultThreadPoolProfile);

	// and replace with the new default profile
	this.defaultThreadPoolProfileId = defaultThreadPoolProfile.getId();
	// and mark the new profile as default
	defaultThreadPoolProfile.setDefaultProfile(true);
	registerThreadPoolProfile(defaultThreadPoolProfile);
	}

	public String getThreadName(String name) {
	return ExecutorServiceHelper.getThreadName(threadNamePattern, name);
	}

	public String getThreadNamePattern() {
	return threadNamePattern;
	}

	public void setThreadNamePattern(String threadNamePattern) {
	this.threadNamePattern = threadNamePattern;
	}

	public ExecutorService lookup(Object source, String name, String executorServiceRef) {
	ExecutorService answer = camelContext.getRegistry().lookup(executorServiceRef, ExecutorService.class);
	if (answer != null && LOG.isDebugEnabled()) {
	if (LOG.isDebugEnabled()) {
	LOG.debug("Looking up ExecutorService with ref: " + executorServiceRef + " and found it from Registry: " + answer);
	}
	}

	if (answer == null) {
	// try to see if we got a thread pool profile with that id
	answer = newThreadPool(source, name, executorServiceRef);
	if (answer != null && LOG.isDebugEnabled()) {
	LOG.debug("Looking up ExecutorService with ref: " + executorServiceRef
	+ " and found a matching ThreadPoolProfile to create the ExecutorService: " + answer);
	}
	}

	return answer;
	}

	public ExecutorService newDefaultThreadPool(Object source, String name) {
	ThreadPoolProfile profile = getDefaultThreadPoolProfile();
	ObjectHelper.notNull(profile, "DefaultThreadPoolProfile");

	return newThreadPool(source, name,
	profile.getPoolSize(), profile.getMaxPoolSize(),
	profile.getKeepAliveTime(), profile.getTimeUnit(),
	profile.getMaxQueueSize(), profile.getRejectedExecutionHandler(), false);
	}

	public ExecutorService newThreadPool(Object source, String name, String threadPoolProfileId) {
	ThreadPoolProfile defaultProfile = getDefaultThreadPoolProfile();
	ThreadPoolProfile profile = getThreadPoolProfile(threadPoolProfileId);
	if (profile != null) {
	// fallback to use values from default profile if not specified
	Integer poolSize = profile.getPoolSize() != null ? profile.getPoolSize() : defaultProfile.getPoolSize();
	Integer maxPoolSize = profile.getMaxPoolSize() != null ? profile.getMaxPoolSize() : defaultProfile.getMaxPoolSize();
	Long keepAliveTime = profile.getKeepAliveTime() != null ? profile.getKeepAliveTime() : defaultProfile.getKeepAliveTime();
	TimeUnit timeUnit = profile.getTimeUnit() != null ? profile.getTimeUnit() : defaultProfile.getTimeUnit();
	Integer maxQueueSize = profile.getMaxQueueSize() != null ? profile.getMaxQueueSize() : defaultProfile.getMaxQueueSize();
	RejectedExecutionHandler handler = profile.getRejectedExecutionHandler() != null ? profile.getRejectedExecutionHandler() : defaultProfile.getRejectedExecutionHandler();
	// create the pool
	return newThreadPool(source, name, poolSize, maxPoolSize, keepAliveTime, timeUnit, maxQueueSize, handler, false);
	} else {
	// no profile with that id
	return null;
	}
	}

	public ExecutorService newCachedThreadPool(Object source, String name) {
	ExecutorService answer = ExecutorServiceHelper.newCachedThreadPool(threadNamePattern, name, true);
	onThreadPoolCreated(answer);

	if (LOG.isDebugEnabled()) {
	LOG.debug("Created new cached thread pool for source: " + source + " with name: " + name + ". -> " + answer);
	}
	return answer;
	}

	public ScheduledExecutorService newScheduledThreadPool(Object source, String name, int poolSize) {
	ScheduledExecutorService answer = ExecutorServiceHelper.newScheduledThreadPool(poolSize, threadNamePattern, name, true);
	onThreadPoolCreated(answer);

	if (LOG.isDebugEnabled()) {
	LOG.debug("Created new scheduled thread pool for source: " + source + " with name: " + name + ". [poolSize=" + poolSize + "]. -> " + answer);
	}
	return answer;
	}

	public ExecutorService newFixedThreadPool(Object source, String name, int poolSize) {
	ExecutorService answer = ExecutorServiceHelper.newFixedThreadPool(poolSize, threadNamePattern, name, true);
	onThreadPoolCreated(answer);

	if (LOG.isDebugEnabled()) {
	LOG.debug("Created new fixed thread pool for source: " + source + " with name: " + name + ". [poolSize=" + poolSize + "]. -> " + answer);
	}
	return answer;
	}

	public ExecutorService newSingleThreadExecutor(Object source, String name) {
	ExecutorService answer = ExecutorServiceHelper.newSingleThreadExecutor(threadNamePattern, name, true);
	onThreadPoolCreated(answer);

	if (LOG.isDebugEnabled()) {
	LOG.debug("Created new single thread pool for source: " + source + " with name: " + name + ". -> " + answer);
	}
	return answer;
	}

	public ExecutorService newThreadPool(Object source, String name, int corePoolSize, int maxPoolSize) {
	ExecutorService answer = ExecutorServiceHelper.newThreadPool(threadNamePattern, name, corePoolSize, maxPoolSize);
	onThreadPoolCreated(answer);

	if (LOG.isDebugEnabled()) {
	LOG.debug("Created new thread pool for source: " + source + " with name: " + name + ". [poolSize=" + corePoolSize
	+ ", maxPoolSize=" + maxPoolSize + "] -> " + answer);
	}
	return answer;
	}

	public ExecutorService newThreadPool(Object source, String name, int corePoolSize, int maxPoolSize, long keepAliveTime,
	TimeUnit timeUnit, int maxQueueSize, RejectedExecutionHandler rejectedExecutionHandler,
	boolean daemon) {

	// the thread name must not be null
	ObjectHelper.notNull(name, "ThreadName");

	ExecutorService answer = ExecutorServiceHelper.newThreadPool(threadNamePattern, name, corePoolSize, maxPoolSize, keepAliveTime,
	timeUnit, maxQueueSize, rejectedExecutionHandler, daemon);
	onThreadPoolCreated(answer);

	if (LOG.isDebugEnabled()) {
	LOG.debug("Created new thread pool for source: " + source + " with name: " + name + ". [poolSize=" + corePoolSize
	+ ", maxPoolSize=" + maxPoolSize + ", keepAliveTime=" + keepAliveTime + " " + timeUnit
	+ ", maxQueueSize=" + maxQueueSize + ", rejectedExecutionHandler=" + rejectedExecutionHandler
	+ ", daemon=" + daemon + "] -> " + answer);
	}
	return answer;
	}

	public void shutdown(ExecutorService executorService) {
	ObjectHelper.notNull(executorService, "executorService");

	if (executorService.isShutdown()) {
	return;
	}

	if (LOG.isDebugEnabled()) {
	LOG.debug("Shutdown ExecutorService: " + executorService);
	}
	executorService.shutdown();
	if (LOG.isTraceEnabled()) {
	LOG.trace("Shutdown ExecutorService: " + executorService + " complete.");
	}
	}

	public List<Runnable> shutdownNow(ExecutorService executorService) {
	ObjectHelper.notNull(executorService, "executorService");

	if (executorService.isShutdown()) {
	return null;
	}

	if (LOG.isDebugEnabled()) {
	LOG.debug("ShutdownNow ExecutorService: " + executorService);
	}
	List<Runnable> answer = executorService.shutdownNow();
	if (LOG.isTraceEnabled()) {
	LOG.trace("ShutdownNow ExecutorService: " + executorService + " complete.");
	}

	return answer;
	}

	private void onThreadPoolCreated(ExecutorService executorService) {
	// add to internal list of thread pools
	executorServices.add(executorService);

	// let lifecycle strategy be notified as well which can let it be managed in JMX as well
	if (executorService instanceof ThreadPoolExecutor) {
	ThreadPoolExecutor threadPool = (ThreadPoolExecutor) executorService;
	for (LifecycleStrategy lifecycle : camelContext.getLifecycleStrategies()) {
	lifecycle.onThreadPoolAdd(camelContext, threadPool);
	}
	}

	// now call strategy to allow custom logic
	onNewExecutorService(executorService);
	}

	/**
	* Strategy callback when a new {@link java.util.concurrent.ExecutorService} have been created.
	*
	* @param executorService the created {@link java.util.concurrent.ExecutorService}
	*/
	protected void onNewExecutorService(ExecutorService executorService) {
	// noop
	}

	@Override
	protected void doStart() throws Exception {
	// noop
	}

	@Override
	protected void doStop() throws Exception {
	// noop
	}

	@Override
	protected void doShutdown() throws Exception {
	// shutdown all executor services
	for (ExecutorService executorService : executorServices) {
	// only log if something goes wrong as we want to shutdown them all
	try {
	shutdownNow(executorService);
	} catch (Throwable e) {
	LOG.warn("Error occurred during shutdown of ExecutorService: "
	+ executorService + ". This exception will be ignored.", e);
	}
	}
	executorServices.clear();
	threadPoolProfiles.clear();
	}

	}