Ax1an commented on a change in pull request #7069: URL: https://github.com/apache/skywalking/pull/7069#discussion_r645957487
########## File path: apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/jvm/JVMUtil.java ########## @@ -0,0 +1,190 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.skywalking.apm.agent.core.jvm; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import java.io.File; +import java.io.IOException; +import java.lang.instrument.Instrumentation; +import java.lang.management.ManagementFactory; +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Collections; +import java.util.Date; +import java.util.Enumeration; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.jar.JarEntry; +import java.util.jar.JarFile; +import org.apache.skywalking.apm.agent.core.boot.ServiceManager; +import org.apache.skywalking.apm.agent.core.logging.api.ILog; +import org.apache.skywalking.apm.agent.core.logging.api.LogManager; +import org.apache.skywalking.apm.agent.core.os.OSUtil; +import org.apache.skywalking.apm.network.common.v3.KeyStringValuePair; + +public class JVMUtil { + + private static final ILog LOGGER = LogManager.getLogger(JVMUtil.class); + + private static Map<String, String> JAR_PATH_MAP = new HashMap<>(); + + private static Set<String> JAR_FILE_LIST = new HashSet<>(); + + public static List<String> getJarFileNameList() { + List<String> jarFileNameList = new ArrayList<>(); + for (String jarFile : JAR_FILE_LIST) { + String jarFileName = jarFile.substring(jarFile.lastIndexOf("/") + 1); + jarFileNameList.add(jarFileName); + } + return jarFileNameList; + } + + public static void loadJvmInfo() { + loadJarPath(); + loadJarFileList(); + } + + private static void loadJarPath() { + Instrumentation instrumentation = ServiceManager.INSTRUMENTATION; + + Class[] clzzs = instrumentation.getAllLoadedClasses(); + Set<ClassLoader> classLoaders = new HashSet<>(); + for (final Class clzz : clzzs) { + ClassLoader classLoader = clzz.getClassLoader(); + if (classLoader != null) { + classLoaders.add(clzz.getClassLoader()); + } + } + + for (ClassLoader classLoader : classLoaders) { + classResCalc(classLoader.getClass()); + } + } + + private static void classResCalc(Class c) { + try { + java.net.URL url = c.getResource("/"); + if (null != url) { + JAR_PATH_MAP.put(url.toString(), ""); + } + } catch (Exception e) { + LOGGER.warn("Error msg: {}", e.getMessage()); + } + } + + private static void loadJarFileList() { + String[] classPathJar = getPathSeparator().split(OSUtil.getPathSeparator()); + for (String s : classPathJar) { + if (!s.endsWith(".jar")) { + continue; + } + String path = new File(s).getAbsolutePath(); + JAR_FILE_LIST.add(path); + } + for (String s : JAR_PATH_MAP.keySet()) { + s = s.replace("file:", ""); + if (s.endsWith("WEB-INF/classes/")) { + s = s.replace("WEB-INF/classes/", "WEB-INF/lib/"); + } + File tempDir = new File(s); + if (!tempDir.exists() || !tempDir.isDirectory()) { + continue; + } + for (File file : tempDir.listFiles()) { + if (!file.getName().endsWith(".jar")) { + continue; + } + JAR_FILE_LIST.add(file.getAbsolutePath()); + } + } + loadSpringBootLib(); + } + + private static void loadSpringBootLib() { + List<String> springBootJars = new ArrayList<>(); + for (String s : JAR_FILE_LIST) { + JarFile jar = null; + try { + jar = new JarFile(s); + if (jar.getManifest() == null || !"org.springframework.boot.loader.JarLauncher".equals(jar.getManifest().getMainAttributes().getValue("Main-Class"))) { + continue; + } + Enumeration<JarEntry> jarEntry = jar.entries(); + String jarPath; + while (jarEntry.hasMoreElements()) { + jarPath = jarEntry.nextElement().getName(); + if (jarPath.endsWith(".jar")) { + springBootJars.add(s + "!/" + jarPath); + } + } + + } catch (Exception e) { + LOGGER.warn("Error msg: {}", e.getMessage()); + } finally { + try { + if (jar != null) { + jar.close(); + } + } catch (IOException e) { + LOGGER.warn("Error msg: {}", e.getMessage()); + } + } + } + if (springBootJars.size() > 0) { + JAR_FILE_LIST.addAll(springBootJars); + } + } + + private static String getPathSeparator() { Review comment: I'll adjust the name. -- This is an automated message from the Apache Git Service. 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