DefaultStreamGobblerCallback.java

/**
 *  Copyright 2007-2008 University Of Southern California
 *
 *  Licensed 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 edu.isi.pegasus.common.util;

import edu.isi.pegasus.common.logging.LogManager;
import edu.isi.pegasus.common.logging.LogManagerFactory;

/**
 * The default callback for the stream gobbler, that logs all the messages to
 * a particular logging level. By default all the messages are logged onto the
 * DEBUG level.
 *
 * @author Karan Vahi
 * @version $Revision$
 */
public class DefaultStreamGobblerCallback implements StreamGobblerCallback {

    /**
     * The level on which the messages are to be logged.
     */
    private int mLevel;

    /**
     * The instance to the logger to log messages.
     */
    private LogManager mLogger;

    /**
     * The overloaded constructor.
     *
     * @param level   the level on which to log.
     */
    public DefaultStreamGobblerCallback(int level) {
        //should do a sanity check on the levels
        mLevel  = level;
        mLogger    = LogManagerFactory.loadSingletonInstance(  );
    }

    /**
     * Callback whenever a line is read from the stream by the StreamGobbler.
     * The line is logged to the level specified while initializing the
     * class.
     *
     * @param line   the line that is read.
     */
    public void work(String line) {
        mLogger.log( line , mLevel);
    }

}