/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program 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 version 2 of the License.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.agent.promptcmd;
import gnu.getopt.Getopt;
import gnu.getopt.LongOpt;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import mazz.i18n.Msg;
import org.rhq.core.system.ProcessExecution;
import org.rhq.core.system.ProcessExecutionResults;
import org.rhq.core.system.SystemInfo;
import org.rhq.core.system.SystemInfoFactory;
import org.rhq.core.util.exception.ThrowableUtil;
import org.rhq.enterprise.agent.AgentMain;
import org.rhq.enterprise.agent.i18n.AgentI18NFactory;
import org.rhq.enterprise.agent.i18n.AgentI18NResourceKeys;
/**
* Allows the agent to execute an external program.
*
* @author John Mazzitelli
*/
public class ExecutePromptCommand implements AgentPromptCommand {
private static final Msg MSG = AgentI18NFactory.getMsg();
/**
* @see AgentPromptCommand#getPromptCommandString()
*/
public String getPromptCommandString() {
return MSG.getMsg(AgentI18NResourceKeys.EXECUTE);
}
/**
* @see AgentPromptCommand#execute(AgentMain, String[])
*/
public boolean execute(AgentMain agent, String[] args) {
PrintWriter out = agent.getOut();
if (args.length <= 1) {
out.println(MSG.getMsg(AgentI18NResourceKeys.HELP_SYNTAX_LABEL, getSyntax()));
return true;
}
// strip the first argument, which is the name of our prompt command
String[] realArgs = new String[args.length - 1];
System.arraycopy(args, 1, realArgs, 0, args.length - 1);
processCommand(realArgs, out);
return true;
}
/**
* @see AgentPromptCommand#getSyntax()
*/
public String getSyntax() {
return MSG.getMsg(AgentI18NResourceKeys.EXECUTE_SYNTAX);
}
/**
* @see AgentPromptCommand#getHelp()
*/
public String getHelp() {
return MSG.getMsg(AgentI18NResourceKeys.EXECUTE_HELP);
}
/**
* @see AgentPromptCommand#getDetailedHelp()
*/
public String getDetailedHelp() {
return MSG.getMsg(AgentI18NResourceKeys.EXECUTE_DETAILED_HELP);
}
private void processCommand(String[] args, PrintWriter out) {
boolean capture = false;
long waitTime = 30000L;
Map<String, String> environmentVars = null;
String executable = null;
String workingDir = null;
boolean killOnTimeout = false;
String sopts = "-cd:E:kw:";
LongOpt[] lopts = { new LongOpt("capture", LongOpt.NO_ARGUMENT, null, 'c'),
new LongOpt("killOnTimeout", LongOpt.NO_ARGUMENT, null, 'k'),
new LongOpt("wait", LongOpt.REQUIRED_ARGUMENT, null, 'w'),
new LongOpt("directory", LongOpt.REQUIRED_ARGUMENT, null, 'd') };
Getopt getopt = new Getopt("execute", args, sopts, lopts);
int code;
while ((executable == null) && ((code = getopt.getopt()) != -1)) {
switch (code) {
case ':':
case '?': {
out.println(MSG.getMsg(AgentI18NResourceKeys.HELP_SYNTAX_LABEL, getSyntax()));
return;
}
case 1: {
// we found the executable name - stop processing arguments
executable = getopt.getOptarg();
break;
}
case 'c': {
capture = true;
break;
}
case 'd': {
workingDir = getopt.getOptarg();
break;
}
case 'k': {
killOnTimeout = true;
break;
}
case 'w': {
String waitArg = getopt.getOptarg();
try {
waitTime = Long.parseLong(waitArg);
} catch (NumberFormatException nfe) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_BAD_WAIT_ARG, waitArg));
return;
}
break;
}
case 'E': {
if (environmentVars == null) {
environmentVars = new LinkedHashMap<String, String>();
}
// here we parse it just to see if we need to set the value to true if a value wasn't provided
String envvar = getopt.getOptarg();
int i = envvar.indexOf("=");
String name;
String value;
if (i == -1) {
name = envvar;
value = "true";
} else {
name = envvar.substring(0, i);
value = envvar.substring(i + 1, envvar.length());
}
environmentVars.put(name, value);
break;
}
}
}
if (executable == null) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_MISSING_EXECUTABLE));
return;
}
// determine what arguments, if any, need to be passed to the process
List<String> procArgList = new ArrayList<String>();
for (int i = getopt.getOptind(); i < args.length; i++) {
procArgList.add(args[i]);
}
String[] procArgArray = procArgList.toArray(new String[procArgList.size()]);
// tell the user what we are going to do
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_EXECUTING, executable, procArgList));
if (environmentVars != null) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_ENV, environmentVars));
}
if (workingDir != null) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_DIR, workingDir));
}
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_WILL_WAIT, Long.valueOf(waitTime)));
// now execute the process
SystemInfo systemInfo = SystemInfoFactory.createSystemInfo();
ProcessExecution processExecution = new ProcessExecution(executable);
processExecution.setArguments(procArgArray);
processExecution.setEnvironmentVariables(environmentVars);
processExecution.setWorkingDirectory(workingDir);
processExecution.setWaitForCompletion(waitTime);
processExecution.setCaptureOutput(capture);
processExecution.setKillOnTimeout(killOnTimeout);
ProcessExecutionResults results = systemInfo.executeProcess(processExecution);
Integer exitCode = results.getExitCode();
Throwable error = results.getError();
String output = results.getCapturedOutput();
if (exitCode != null) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_EXIT_CODE, exitCode));
}
if (error != null) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_ERROR, ThrowableUtil.getAllMessages(error)));
}
if (output != null) {
out.println(MSG.getMsg(AgentI18NResourceKeys.EXECUTE_OUTPUT, output));
}
return;
}
}