content: /*
   * 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.component.metrics.spi;
  
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ThreadFactory;
  
  import com.codahale.metrics.InstrumentedExecutorService;
  import com.codahale.metrics.InstrumentedScheduledExecutorService;
  import com.codahale.metrics.MetricRegistry;
  import org.apache.camel.spi.ThreadPoolFactory;
  import org.apache.camel.spi.ThreadPoolProfile;
  import org.apache.camel.support.DefaultThreadPoolFactory;
  import org.apache.camel.util.ObjectHelper;
  
  /**
   * This implements a {@link ThreadPoolFactory} and generates an Instrumented versions of ExecutorService used to monitor
   * performance of each thread using Metrics.
   */
  public class InstrumentedThreadPoolFactory implements ThreadPoolFactory {
  
      private MetricRegistry metricRegistry;
  
      private ThreadPoolFactory threadPoolFactory;
  
      public InstrumentedThreadPoolFactory(MetricRegistry metricRegistry) {
          this(metricRegistry, new DefaultThreadPoolFactory());
      }
  
      public InstrumentedThreadPoolFactory(MetricRegistry metricRegistry, ThreadPoolFactory threadPoolFactory) {
          ObjectHelper.notNull(metricRegistry, "metricRegistry", this);
          ObjectHelper.notNull(threadPoolFactory, "threadPoolFactory", this);
          this.metricRegistry = metricRegistry;
          this.threadPoolFactory = threadPoolFactory;
      }
  
      @Override
      public ExecutorService newCachedThreadPool(ThreadFactory threadFactory) {
          return new InstrumentedExecutorService(threadPoolFactory.newCachedThreadPool(threadFactory), metricRegistry);
      }
  
      @Override
      public ExecutorService newThreadPool(ThreadPoolProfile profile, ThreadFactory threadFactory) {
          return new InstrumentedExecutorService(
                  threadPoolFactory.newThreadPool(profile, threadFactory), metricRegistry, profile.getId());
      }
  
      @Override
      public ScheduledExecutorService newScheduledThreadPool(ThreadPoolProfile profile, ThreadFactory threadFactory) {
          return new InstrumentedScheduledExecutorService(
                  threadPoolFactory.newScheduledThreadPool(profile, threadFactory), metricRegistry, profile.getId());
      }
  
  }
  