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/*
 * 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.reef.io.watcher.util;

import org.apache.reef.annotations.Unstable;
import org.apache.reef.wake.EventHandler;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Handler that executes Runnable commands.
 */
@Unstable
public final class RunnableExecutingHandler implements EventHandler {

  private static final Logger LOG = Logger.getLogger(RunnableExecutingHandler.class.getName());

  @Override
  public void onNext(final Runnable runnable) {
    try {
      runnable.run();
    } catch(final Exception exception) {
      LOG.log(Level.INFO, "An exception occurred while writing event with Watcher. {0}", exception.getMessage());
    }
  }
}