gov.nih.nci.caaersinstaller.util.CsmJaasFileCopier.java Source code

Introduction

Here is the source code for gov.nih.nci.caaersinstaller.util.CsmJaasFileCopier.java

Source

/*******************************************************************************
 * Copyright SemanticBits, Northwestern University and Akaza Research
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/caaers/LICENSE.txt for details.
 ******************************************************************************/
package gov.nih.nci.caaersinstaller.util;

import java.io.File;

import org.apache.commons.io.FileUtils;

/**
 * This is used to either replace caaers context in existing csm_jaas.config file or create a new csm_jass.config file
 * if one does not exist. 
 * 
 * @author Monish
 *
 */
public class CsmJaasFileCopier {

    public static void main(String args[]) throws Exception {

        //      File csmJaasTemplateFile = new File("/Users/Moni/temp/installer/postgres.csm_jaas.config");
        //      File csmJassConfigFile = new File("/Users/Moni/temp/installer/csm_jaas.config");

        File csmJaasTemplateFile = new File(args[0]);
        File csmJassConfigFile = new File(args[1]);

        if (csmJassConfigFile.exists()) {
            //append content of csmJaasTemplateFile to existing csmJaasConfigFile
            String csmJaasTemplateFileContent = FileUtils.readFileToString(csmJaasTemplateFile);
            StringBuilder stringBuilder = new StringBuilder(FileUtils.readFileToString(csmJassConfigFile));

            int start = stringBuilder.indexOf("caaers {");
            if (start != -1) {
                //If caaers context exisits then replace it.
                int end = stringBuilder.indexOf("};", start);
                end = end + 2;
                stringBuilder.replace(start, end, csmJaasTemplateFileContent);
            } else {
                //if caaers context does not exist then add it 
                stringBuilder.append("\n");
                stringBuilder.append("\n");
                stringBuilder.append(csmJaasTemplateFileContent);
            }

            FileUtils.writeStringToFile(csmJassConfigFile, stringBuilder.toString());
            System.out.println("Modified csm_jaas.config to add caaers context");

        } else {
            //Create a new File with Contents of csmJaasTemplateFile
            FileUtils.copyFile(csmJaasTemplateFile, csmJassConfigFile);
            System.out.println("Created csm_jaas.config");

        }
    }

}