| /** |
| * 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.storm; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * Launch a sub process and write files out to logs. |
| */ |
| public class LogWriter extends Thread { |
| private Logger logger; |
| private BufferedReader in; |
| |
| public LogWriter(InputStream in, Logger logger) { |
| this.in = new BufferedReader(new InputStreamReader(in)); |
| this.logger = logger; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| ProcessBuilder pb = new ProcessBuilder(args); |
| Process p = pb.start(); |
| LogWriter err = null; |
| LogWriter in = null; |
| int ret = -1; |
| try { |
| Logger logger = LoggerFactory.getLogger("STDERR"); |
| err = new LogWriter(p.getErrorStream(), logger); |
| err.start(); |
| in = new LogWriter(p.getInputStream(), logger); |
| in.start(); |
| ret = p.waitFor(); |
| } finally { |
| if (err != null) { |
| err.close(); |
| } |
| if (in != null) { |
| in.close(); |
| } |
| } |
| System.exit(ret); |
| } |
| |
| @Override |
| public void run() { |
| Logger logger = this.logger; |
| BufferedReader in = this.in; |
| String line; |
| try { |
| while ((line = in.readLine()) != null) { |
| logger.info(line); |
| } |
| } catch (IOException e) { |
| logger.error("Internal ERROR", e); |
| } finally { |
| try { |
| in.close(); |
| } catch (IOException e) { |
| logger.error("Internal ERROR", e); |
| } |
| } |
| } |
| |
| public void close() throws Exception { |
| this.join(); |
| } |
| } |