org.apache.rocketmq.shade.ch.qos.logback.core.util.EnvUtil Maven / Gradle / Ivy
/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2022, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package org.apache.rocketmq.shade.ch.qos.logback.core.util;
import java.lang.module.ModuleDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Optional;
/**
* @author Ceki Gülcü
*/
public class EnvUtil {
private EnvUtil() {
}
/**
*
Returns the current version of logback, or null if data is not
* available.
*
*
* @since 1.3.0
* @return current version or null if missing version data
*/
static public String logbackVersion() {
String moduleVersion = logbackVersionByModule();
if(moduleVersion != null) {
return moduleVersion;
}
Package pkg = EnvUtil.class.getPackage();
if (pkg == null) {
return null;
}
return pkg.getImplementationVersion();
}
/**
* Returns the current version of logback via class.getModule() or null if data is not
* available.
*
*
* @since 1.3.0
* @return current version or null if missing version data
*/
static private String logbackVersionByModule() {
if(!isJDK9OrHigher()) {
return null;
}
try {
//Module module = EnvUtil.class.getModule();
Object moduleObject = ReflectionUtil.invokeMethodOnObject(EnvUtil.class, "getModule");
if (moduleObject == null)
return null;
// ModuleDescriptor md = module.getDescriptor();
Object moduleDescriptorObject = ReflectionUtil.invokeMethodOnObject(moduleObject, "getDescriptor");
if (moduleDescriptorObject == null)
return null;
// Optional opt = md.rawVersion();
Object optionalStringObject = ReflectionUtil.invokeMethodOnObject(moduleDescriptorObject, "rawVersion");
if(optionalStringObject == null)
return null;
Optional opt = (Optional) optionalStringObject;
return opt.orElse(null);
} catch(NoSuchMethodException|IllegalAccessException| InvocationTargetException e) {
return null;
}
}
static public int getJDKVersion(String javaVersionStr) {
int version = 0;
for (char ch : javaVersionStr.toCharArray()) {
if (Character.isDigit(ch)) {
version = (version * 10) + (ch - 48);
} else if (version == 1) {
version = 0;
} else {
break;
}
}
return version;
}
static private boolean isJDK_N_OrHigher(int n) {
String javaVersionStr = System.getProperty("java.version", "");
if (javaVersionStr.isEmpty())
return false;
int version = getJDKVersion(javaVersionStr);
return version > 0 && n <= version;
}
static public boolean isJDK5() {
return isJDK_N_OrHigher(5);
}
static public boolean isJDK6OrHigher() {
return isJDK_N_OrHigher(6);
}
static public boolean isJDK7OrHigher() {
return isJDK_N_OrHigher(7);
}
static public boolean isJDK9OrHigher() {
return isJDK_N_OrHigher(9);
}
static public boolean isJDK16OrHigher() {
return isJDK_N_OrHigher(16);
}
static public boolean isJDK18OrHigher() {
return isJDK_N_OrHigher(18);
}
static public boolean isJaninoAvailable() {
ClassLoader classLoader = EnvUtil.class.getClassLoader();
try {
Class bindingClass = classLoader.loadClass("org.codehaus.janino.ScriptEvaluator");
return (bindingClass != null);
} catch (ClassNotFoundException e) {
return false;
}
}
public static boolean isWindows() {
String os = System.getProperty("os.name");
return os.startsWith("Windows");
}
static public boolean isClassAvailable(Class callerClass, String className) {
ClassLoader classLoader = Loader.getClassLoaderOfClass(callerClass);
try {
Class bindingClass = classLoader.loadClass(className);
return (bindingClass != null);
} catch (ClassNotFoundException e) {
return false;
}
}
}