/* | |
* 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.openmeetings.utils; | |
import java.io.BufferedReader; | |
import java.io.IOException; | |
import java.io.InputStream; | |
import java.io.InputStreamReader; | |
import java.io.UnsupportedEncodingException; | |
import java.util.Arrays; | |
import java.util.HashMap; | |
import java.util.Map; | |
import java.util.concurrent.TimeoutException; | |
import org.openmeetings.app.documents.GenerateSWF; | |
public class ProcessHelper { | |
private static class Worker extends Thread { | |
private final Process process; | |
private Integer exitCode; | |
private Worker(Process process) { | |
this.process = process; | |
} | |
@Override | |
public void run() { | |
try { | |
exitCode = process.waitFor(); | |
} catch (InterruptedException ignore) { | |
return; | |
} | |
} | |
} | |
private static class StreamWatcher extends Thread { | |
public StringBuilder output; | |
private final InputStream is; | |
private final BufferedReader br; | |
private StreamWatcher(Process process, boolean isError) throws UnsupportedEncodingException { | |
output = new StringBuilder(); | |
is = isError ? process.getErrorStream() : process.getInputStream(); | |
br = new BufferedReader(new InputStreamReader(is, "UTF-8")); | |
} | |
@Override | |
public void run() { | |
try { | |
String line = br.readLine(); | |
while (line != null) { | |
output.append(line).append('\n'); | |
line = br.readLine(); | |
} | |
} catch (IOException ioexception) { | |
return; | |
} | |
} | |
} | |
public static HashMap<String, String> executeScript(String process, String[] argv) { | |
Map<String, String> env = new HashMap<String, String>(); | |
return executeScript(process, argv, env); | |
} | |
public static HashMap<String, String> executeScript(String process, | |
String[] argv, Map<? extends String, ? extends String> env) { | |
HashMap<String, String> returnMap = new HashMap<String, String>(); | |
returnMap.put("process", process); | |
GenerateSWF.log.debug("process: " + process); | |
GenerateSWF.log.debug("args: " + Arrays.toString(argv)); | |
try { | |
returnMap.put("command", Arrays.toString(argv)); | |
returnMap.put("out",""); | |
// By using the process Builder we have access to modify the | |
// environment variables | |
// that is handy to set variables to run it inside eclipse | |
ProcessBuilder pb = new ProcessBuilder(argv); | |
pb.environment().putAll(env); | |
Process proc = pb.start(); | |
// 20-minute timeout for command execution | |
// FFMPEG conversion of Recordings may take a real long time until | |
// its finished | |
long timeout = 60000 * 20; | |
StreamWatcher errorWatcher = new StreamWatcher(proc, true); | |
Worker worker = new Worker(proc); | |
StreamWatcher inputWatcher = new StreamWatcher(proc, false); | |
errorWatcher.start(); | |
inputWatcher.start(); | |
worker.start(); | |
try { | |
worker.join(timeout); | |
if (worker.exitCode != null) { | |
returnMap.put("exitValue", "" + worker.exitCode); | |
GenerateSWF.log.debug("exitVal: " + worker.exitCode); | |
returnMap.put("error", errorWatcher.output.toString()); | |
} else { | |
returnMap.put("exception", "timeOut"); | |
returnMap.put("error", errorWatcher.output.toString()); | |
returnMap.put("exitValue", "-1"); | |
throw new TimeoutException(); | |
} | |
} catch (InterruptedException ex) { | |
worker.interrupt(); | |
errorWatcher.interrupt(); | |
inputWatcher.interrupt(); | |
Thread.currentThread().interrupt(); | |
returnMap.put("error", ex.getMessage()); | |
returnMap.put("exitValue", "-1"); | |
throw ex; | |
} finally { | |
proc.destroy(); | |
} | |
} catch (TimeoutException e) { | |
// Timeout exception is processed above | |
GenerateSWF.log.error("executeScript",e); | |
e.printStackTrace(); | |
returnMap.put("error", e.getMessage()); | |
returnMap.put("exception", e.toString()); | |
returnMap.put("exitValue", "-1"); | |
} catch (Throwable t) { | |
// Any other exception is shown in debug window | |
GenerateSWF.log.error("executeScript",t); | |
t.printStackTrace(); | |
returnMap.put("error", t.getMessage()); | |
returnMap.put("exception", t.toString()); | |
returnMap.put("exitValue", "-1"); | |
} | |
return returnMap; | |
} | |
} |