org.smartfrog.avalanche.client.sf.apps.gt4.prereqs.CheckCommand.java Source code

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Here is the source code for org.smartfrog.avalanche.client.sf.apps.gt4.prereqs.CheckCommand.java

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/**
(C) Copyright 1998-2007 Hewlett-Packard Development Company, LP
    
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
    
This library 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 Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    
For more information: www.smartfrog.org
*/
package org.smartfrog.avalanche.client.sf.apps.gt4.prereqs;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * @author sandya
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class CheckCommand {
    Runtime rt = null;
    BufferedReader cmdError = null;
    BufferedReader cmdOutput = null;

    private static final Log log = LogFactory.getLog(CheckCommand.class);

    public CheckCommand() {
        rt = Runtime.getRuntime();
    }

    public int cmdInPath(String cmd, String options) throws IOException, InterruptedException {
        String chkCmd = cmd + " " + options;
        boolean success = true;

        int exitVal = 0;
        try {
            Process p = rt.exec(chkCmd);
            cmdOutput = new BufferedReader(new InputStreamReader(p.getInputStream()));
            cmdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
            /*String line = null;
            while ((line=cmdError.readLine()) != null) {
               log.error("ERROR: " + line);            
            }
            while ((line=cmdOutput.readLine()) != null) {
               log.info("OUTPUT: " + line);            
            }*/

            exitVal = p.waitFor();
            //   System.out.println(cmd + " found in path");
        } catch (IOException ioe) {
            throw new IOException("Error occured while executing " + chkCmd, ioe);
        }

        //System.out.println("Exit value for " + cmd + " is :" + exitVal);
        return exitVal;
    }

    public int cmdInDir(String directory, String cmd, String options) throws IOException, InterruptedException {
        boolean success = true;

        char separator = File.separatorChar;
        directory = directory.replace('\\', File.separatorChar);
        directory = directory.replace('/', File.separatorChar);

        File dir = new File(directory);
        if (!dir.exists()) {
            log.error("The directory " + directory + " does not exist");
            throw new IOException("The directory " + directory + " does not exist");
            //return false;
        }
        if (!dir.isDirectory()) {
            log.error(directory + " is not a directory");
            throw new IOException(directory + " is not a directory");
            //return false;
        }
        if (!dir.canRead()) {
            log.error("Directory " + directory + " is not readable");
            throw new IOException("Directory " + directory + " is not readable");
            //return false;
        }

        cmd = directory + separator + "bin" + separator + cmd;
        return cmdInPath(cmd, options);
    }

    public static void main(String args[]) throws IOException {
        Runtime rt = Runtime.getRuntime();
        String chkCmd = "pg_ctl --version";
        String line;
        Process p = rt.exec(chkCmd);
        BufferedReader cmdOutput = new BufferedReader(new InputStreamReader(p.getInputStream()));
        System.out.println("test");
        while ((line = cmdOutput.readLine()) != null) {
            System.out.println(line);
        }

        //log.info(line);
        cmdOutput.close();
    }
}