/*
    * 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.hadoop.chukwa.inputtools.mdl;
  
  
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.BufferedReader;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  public class ErStreamHandler extends Thread {
    InputStream inpStr;
    String command;
    boolean record;
  
    private static Log log = LogFactory.getLog(ErStreamHandler.class);
  
    public ErStreamHandler(InputStream inpStr, String command, boolean record) {
      this.inpStr = inpStr;
      this.command = command;
      this.record = record;
  
    }
  
    public void run() {
      try {
        InputStreamReader inpStrd = new InputStreamReader(inpStr);
        BufferedReader buffRd = new BufferedReader(inpStrd);
        String line = null;
        StringBuffer sb = new StringBuffer();
        while ((line = buffRd.readLine()) != null) {
          sb.append(line);
        }
        buffRd.close();
  
        if (record && sb.length() > 0) {
          log.error(command + " execution error:" + sb.toString());
        }
  
      } catch (Exception e) {
        log.error(command + " error:" + e.getMessage());
      }
    }
  
  }