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Micro Distribution of the Payara Project
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2009-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.glassfish.bootstrap;
import java.io.*;
import java.net.JarURLConnection;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;
import java.util.*;
import java.util.logging.Logger;
/**
* @author [email protected]
*/
public class Util {
private static Logger logger = LogFacade.BOOTSTRAP_LOGGER;
private Util(){}
public static Logger getLogger() {
return logger;
}
/**
* Gets a property value from the supplied properties object, if not defined there from system properties.
*
* @param properties Properties to be searched ahead of system properties.
* @param propertyName name of the property
* @param defaultValue default property value
* @return value of the property
*/
static String getPropertyOrSystemProperty(Properties properties, String propertyName, String defaultValue) {
String value = properties.getProperty(propertyName);
return value != null ? value : System.getProperty(propertyName, defaultValue);
}
/**
* @see #getPropertyOrSystemProperty(java.util.Properties, String, String)
*/
static String getPropertyOrSystemProperty(Properties properties, String propertyName) {
return getPropertyOrSystemProperty(properties, propertyName, null);
}
static boolean deleteRecursive(File dir) {
for (File f : dir.listFiles()) {
if (f.isFile()) {
f.delete();
} else {
deleteRecursive(f);
}
}
return dir.delete();
}
static long getLastModified(File directory, long current) {
for (File file : directory.listFiles()) {
long lastModified;
if (file.isDirectory()) {
lastModified = getLastModified(file, current);
} else {
lastModified = file.lastModified();
}
if (lastModified > current) {
current = lastModified;
}
}
return current;
}
/**
* This method is used to copy a given file to another file
* using the buffer sixe specified
*
* @param fin the source file
* @param fout the destination file
*/
static void copyFile(File fin, File fout) throws IOException {
InputStream inStream = new BufferedInputStream(new FileInputStream(fin));
FileOutputStream fos = new FileOutputStream(fout);
copy(inStream, fos, fin.length());
}
static void copyWithoutClose(InputStream in, FileOutputStream out, long size) throws IOException {
ReadableByteChannel inChannel = Channels.newChannel(in);
FileChannel outChannel = out.getChannel();
outChannel.transferFrom(inChannel, 0, size);
}
static void copy(InputStream in, FileOutputStream out, long size) throws IOException {
try {
copyWithoutClose(in, out, size);
} finally {
if (in != null)
in.close();
if (out != null)
out.close();
}
}
static URI whichJar(Class clazz) {
URL url = clazz.getClassLoader().getResource(
clazz.getName().replace(".", "/") + ".class");
if (url != null) {
URLConnection con = null;
try {
con = url.openConnection();
if (con instanceof JarURLConnection) {
return JarURLConnection.class.cast(con).getJarFileURL().toURI();
}
} catch (Exception ioe) {
ioe.printStackTrace();
}
}
return null;
}
static File getJDKToolsJar() {
File javaHome = new File(System.getProperty("java.home"));
File jdktools = null;
if (javaHome.getParent() != null) {
jdktools = new File(javaHome.getParent(),
"lib" + File.separator + "tools.jar");
}
return jdktools;
}
private static final String DELIM_START = "${";
private static final String DELIM_STOP = "}";
/**
*
* This method performs property variable substitution on the
* specified value. If the specified value contains the syntax
* ${<prop-name>}, where <prop-name>
* refers to either a configuration property or a system property,
* then the corresponding property value is substituted for the variable
* placeholder. Multiple variable placeholders may exist in the
* specified value as well as nested variable placeholders, which
* are substituted from inner most to outer most. Configuration
* properties override system properties.
*
* @param val The string on which to perform property substitution.
* @param currentKey The key of the property being evaluated used to
* detect cycles.
* @param cycleMap Map of variable references used to detect nested cycles.
* @param configProps Set of configuration properties.
* @return The value of the specified string after system property substitution.
* @throws IllegalArgumentException If there was a syntax error in the
* property placeholder syntax or a recursive variable reference.
*/
private static String substVars(String val, String currentKey,
Map cycleMap, Properties configProps)
throws IllegalArgumentException
{
/*
* THIS METHOD HAS BEEN COPIED FROM FELIX
*/
// If there is currently no cycle map, then create
// one for detecting cycles for this invocation.
if (cycleMap == null)
{
cycleMap = new HashMap();
}
// Put the current key in the cycle map.
cycleMap.put(currentKey, currentKey);
// Assume we have a value that is something like:
// "leading ${foo.${bar}} middle ${baz} trailing"
// Find the first ending '}' variable delimiter, which
// will correspond to the first deepest nested variable
// placeholder.
int stopDelim = -1;
int startDelim = -1;
do
{
stopDelim = val.indexOf(DELIM_STOP, stopDelim + 1);
// If there is no stopping delimiter, then just return
// the value since there is no variable declared.
if (stopDelim < 0)
{
return val;
}
// Try to find the matching start delimiter by
// looping until we find a start delimiter that is
// greater than the stop delimiter we have found.
startDelim = val.indexOf(DELIM_START);
// If there is no starting delimiter, then just return
// the value since there is no variable declared.
if (startDelim < 0)
{
return val;
}
while (stopDelim >= 0)
{
int idx = val.indexOf(DELIM_START, startDelim + DELIM_START.length());
if ((idx < 0) || (idx > stopDelim))
{
break;
}
else if (idx < stopDelim)
{
startDelim = idx;
}
}
}
while ((startDelim > stopDelim) && (stopDelim >= 0));
// At this point, we have found a variable placeholder so
// we must perform a variable substitution on it.
// Using the start and stop delimiter indices, extract
// the first, deepest nested variable placeholder.
String variable =
val.substring(startDelim + DELIM_START.length(), stopDelim);
// Verify that this is not a recursive variable reference.
if (cycleMap.get(variable) != null)
{
throw new IllegalArgumentException(
"recursive variable reference: " + variable);
}
// Get the value of the deepest nested variable placeholder.
// Try to configuration properties first.
String substValue = (configProps != null)
? configProps.getProperty(variable, null)
: null;
if (substValue == null)
{
// Ignore unknown property values.
substValue = System.getProperty(variable, "");
}
// Remove the found variable from the cycle map, since
// it may appear more than once in the value and we don't
// want such situations to appear as a recursive reference.
cycleMap.remove(variable);
// Append the leading characters, the substituted value of
// the variable, and the trailing characters to get the new
// value.
val = val.substring(0, startDelim)
+ substValue
+ val.substring(stopDelim + DELIM_STOP.length(), val.length());
// Now perform substitution again, since there could still
// be substitutions to make.
val = substVars(val, currentKey, cycleMap, configProps);
// Return the value.
return val;
}
public static void substVars(Properties props) {
// Perform variable substitution for system properties.
for (Enumeration e = props.propertyNames(); e.hasMoreElements();) {
String name = (String) e.nextElement();
props.setProperty(name,
substVars(props.getProperty(name), name, null, props));
}
}
/**
* Override property values in the given properties object by values set in corresponding property names in
* System properties object.
*
* @param platformConf which will be updated by corresponding values in System properties.
* @param excluding property names that should not be overridden
*/
public static void overrideBySystemProps(Properties platformConf, Collection excluding) {
Properties sysProps = System.getProperties();
for (Map.Entry entry: platformConf.entrySet()) {
if (excluding.contains(entry.getKey())) {
continue;
}
Object systemPropValue = sysProps.get(entry.getKey());
if (systemPropValue != null && !systemPropValue.equals(entry.getValue())) {
platformConf.put(entry.getKey(), systemPropValue);
}
}
}
}