2 * Copyright (C) 2001-2006 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * and distribute linked combinations including the two. You must obey the
23 * GNU General Public License in all respects for all of the code used other than
24 * the above mentioned libraries. If you modify this file, you may extend this
25 * exception to your version of the file, but you are not obligated to do so.
26 * If you do not wish to do so, delete this exception statement from your version.
30 import mir.log.LoggerWrapper;
31 import mir.util.ParameterExpander;
35 public class ExecuteProgramProducerNode extends AbstractProducerNode {
36 private String scriptExpression;
37 private String maxDurationExpression;
38 private String outputVariableExpression;
39 private String returnValueVariableExpression;
41 public ExecuteProgramProducerNode(String aScriptExpression, String aMaxDurationExpression, String anOutputVariableExpression,
42 String aReturnValueVariableExpression) {
43 scriptExpression = aScriptExpression;
44 maxDurationExpression = aMaxDurationExpression;
45 outputVariableExpression = anOutputVariableExpression;
46 returnValueVariableExpression = aReturnValueVariableExpression;
49 public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure {
54 script = ParameterExpander.expandExpression(aValueMap, scriptExpression);
55 maxDuration = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, maxDurationExpression, 0);
57 ProcessRunner runner = new ProcessRunner(aLogger, script);
60 synchronized (runner) {
61 runner.wait(maxDuration);
65 if (runner.getFinished()) {
66 aLogger.info(script + " terminated successfully, return value = " + runner.getReturnValue() + ".");
68 if (returnValueVariableExpression != null) {
69 ParameterExpander.setValueForKey(aValueMap,
70 ParameterExpander.expandExpression(aValueMap, returnValueVariableExpression),
71 new Integer(runner.getReturnValue()));
76 aLogger.info(script + " interrupted prematurely after " + maxDuration + "ms.");
80 aLogger.error("Error while executing " + scriptExpression + " : " + e.toString());
84 private static class ProcessRunner extends Thread {
85 private String script;
86 private boolean finished = false;
87 private int returnValue = 0;
88 private LoggerWrapper logger;
90 public ProcessRunner(LoggerWrapper aLogger, String aScript) {
95 public boolean getFinished() {
99 public int getReturnValue() {
104 Process process = null;
106 process = Runtime.getRuntime().exec(script);
107 returnValue = process.waitFor();
111 synchronized (this) {
115 catch (InterruptedException e) {
120 catch (Exception e) {
121 logger.error(script + " failed to execute: " + e.getMessage());