/*
* Copyright 2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jdo.tck.util;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Enumeration;
import java.util.Properties;
import javax.jdo.JDOFatalException;
/**
* A class to produce a text summary of system configuration information.
*/
public class SystemCfgSummary {
/** The name of the system configuration summary file. */
private static final String SYSCFG_FILE_NAME = "system_config.txt";
private static String newLine;
/**
* Creates a new file containing system configuration information.
* @param args the first element contains the output directory;
* the second element contains the file name
*/
public static void main(String[] args) {
String directory = args[0] + File.separator;
String fileName = null;
if (args[1] != null) {
fileName = args[1] ;
} else {
fileName = SYSCFG_FILE_NAME;
}
newLine = System.getProperty("line.separator");
String message = getSystemInfo();
if (message == null) {
message = "No system information found.";
}
saveSystemInfo(directory + fileName, message);
}
/**
* Gets system information from System properties
* @return System property keys and values as a String, one per line
*/
static String getSystemInfo() {
Properties props = System.getProperties();
Enumeration propEnum = props.propertyNames();
StringBuffer sysinfo = new StringBuffer();
while (propEnum.hasMoreElements()) {
String key = (String)propEnum.nextElement();
sysinfo.append(key + ": " + props.getProperty(key) + newLine);
}
return sysinfo.toString();
}
/**
* Saves the given message to the system configuration summary file
* in the given directory.
* @param directory the directory
* @param message the message
*/
static void saveSystemInfo(String path, String message) {
PrintStream resultStream = null;
try {
resultStream = new PrintStream(
new FileOutputStream(path, true));
resultStream.println(message);
} catch (FileNotFoundException e) {
throw new JDOFatalException("Cannot create file " + path, e);
} finally {
if (resultStream != null)
resultStream.close();
}
}
}