-/*
- * Copyright (C) 2001, 2002 The Mir-coders group
- *
- * This file is part of Mir.
- *
- * Mir is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Mir is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Mir; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * In addition, as a special exception, The Mir-coders gives permission to link
- * the code of this program with the com.oreilly.servlet library, any library
- * licensed under the Apache Software License, The Sun (tm) Java Advanced
- * Imaging library (JAI), The Sun JIMI library (or with modified versions of
- * the above that use the same license as the above), and distribute linked
- * combinations including the two. You must obey the GNU General Public
- * License in all respects for all of the code used other than the above
- * mentioned libraries. If you modify this file, you may extend this exception
- * to your version of the file, but you are not obligated to do so. If you do
- * not wish to do so, delete this exception statement from your version.
- */
-
-package mir.producer;
-
-import java.io.*;
-import java.util.*;
-
-import mir.util.*;
-import mir.log.*;
-
-public class ScriptCallingProducerNode implements ProducerNode {
- String scriptExpression;
-
- public ScriptCallingProducerNode(String aScriptExpression) {
- scriptExpression = aScriptExpression;
- }
-
- public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure {
- String script;
- Process process;
- int returnValue;
-
- try {
- script = ParameterExpander.expandExpression( aValueMap, scriptExpression );
- process = Runtime.getRuntime().exec(script);
- returnValue = process.waitFor();
- aLogger.info(script + " terminated successfully, return value = " + returnValue + ".");
- }
- catch (Throwable e) {
- aLogger.error(scriptExpression + " failed to execute: " + e.getMessage());
- }
- }
-}
+/*\r
+ * Copyright (C) 2001, 2002 The Mir-coders group\r
+ *\r
+ * This file is part of Mir.\r
+ *\r
+ * Mir is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * Mir is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with Mir; if not, write to the Free Software\r
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
+ *\r
+ * In addition, as a special exception, The Mir-coders gives permission to link\r
+ * the code of this program with any library licensed under the Apache Software License,\r
+ * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library\r
+ * (or with modified versions of the above that use the same license as the above),\r
+ * and distribute linked combinations including the two. You must obey the\r
+ * GNU General Public License in all respects for all of the code used other than\r
+ * the above mentioned libraries. If you modify this file, you may extend this\r
+ * exception to your version of the file, but you are not obligated to do so.\r
+ * If you do not wish to do so, delete this exception statement from your version.\r
+ */\r
+package mir.producer;\r
+\r
+import java.util.Map;\r
+\r
+import mir.log.LoggerWrapper;\r
+import mir.util.ParameterExpander;\r
+\r
+public class ScriptCallingProducerNode implements ProducerNode {\r
+ private String scriptExpression;\r
+ private String maxDurationExpression;\r
+\r
+ public ScriptCallingProducerNode(String aScriptExpression, String aMaxDurationExpression) {\r
+ scriptExpression = aScriptExpression;\r
+ maxDurationExpression = aMaxDurationExpression;\r
+ }\r
+\r
+ public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure {\r
+ String script;\r
+ long maxDuration;\r
+ Process process;\r
+ int returnValue;\r
+\r
+ try {\r
+ script = ParameterExpander.expandExpression(aValueMap, scriptExpression);\r
+ maxDuration = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, maxDurationExpression, 0);\r
+\r
+ ProcessRunner runner = new ProcessRunner(Runtime.getRuntime().exec(script));\r
+ runner.start();\r
+ synchronized (runner) {\r
+ runner.wait(maxDuration);\r
+ }\r
+ runner.interrupt();\r
+\r
+ if (runner.getFinished()) {\r
+ aLogger.info(script + " terminated successfully, return value = " + runner.getReturnValue() + ".");\r
+ }\r
+ else {\r
+ aLogger.info(script + " interrupted prematurely after " + maxDuration + "ms.");\r
+ }\r
+ }\r
+ catch (Throwable e) {\r
+ aLogger.error(scriptExpression + " failed to execute: " + e.getMessage());\r
+ }\r
+ }\r
+\r
+ private static class ProcessRunner extends Thread {\r
+ private Process process;\r
+ private boolean finished = false;\r
+ private int returnValue = 0;\r
+\r
+ public ProcessRunner(Process aProcess) {\r
+ process = aProcess;\r
+ }\r
+\r
+ public boolean getFinished() {\r
+ return finished;\r
+ }\r
+\r
+ public int getReturnValue() {\r
+ return returnValue;\r
+ }\r
+\r
+ public void run() {\r
+ try {\r
+ returnValue = process.waitFor();\r
+ finished = true;\r
+ synchronized (this) {\r
+ this.notify();\r
+ }\r
+ }\r
+ catch (InterruptedException e) {\r
+ process.destroy();\r
+ }\r
+ }\r
+ }\r
+\r
+}\r
projects / mir.git / blobdiff