/*
 * 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.droids.monitor;

import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.droids.api.Task;
import org.apache.droids.api.WorkMonitor;
import org.apache.droids.api.Worker;

/**
 * A simple 
 */
public class SimpleWorkMonitor<T extends Task> implements WorkMonitor<T> {
  
  Map<T,WorkBean<T>> working = new ConcurrentHashMap<T, WorkBean<T>>();
  
  @Override
  public void beforeExecute(T task, Worker<T> worker) {
    WorkBean<T> bean = new WorkBean<T>( task, worker );
    working.put( task, bean );
  }

  @Override
  public void afterExecute(T task, Worker<T> worker, Exception ex) {
    working.remove( task );
  }
  
  public Collection<WorkBean<T>> getRunningTasks()
  {
    return working.values();
  }
  
  public WorkBean<T> getWorkBean( T task )
  {
    return working.get( task );
  }
}
