/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.persistence.logging;

import java.io.*;

/**
 * A <code>StreamHandler</code> exports log records to an
 * <code>OutputStream</code>. 
 */
public class StreamHandler extends Handler {

  /** The destination PrintWriter */
  private PrintWriter pw;

  /**
   * Creates a new <code>StreamHandler</code> that exports log records
   * to an <code>OutputStream</code> in a given format.
   */
  public StreamHandler(OutputStream stream, Formatter formatter) {
    super();
    this.pw = new PrintWriter(stream, true);
    this.setFormatter(formatter);
  }

  public void close() {
    this.pw.close();
  }

  public void flush() {
    this.pw.flush();
  }

  public boolean isLoggable(LogRecord record) {
    if(this.pw == null) {
      return(false);
    } else {
      return(super.isLoggable(record));
    }
  }

  public void publish(LogRecord record) {
    Formatter formatter = this.getFormatter();
    pw.print(formatter.format(record));
  }

}
