用代码染色实现精准无效代码清理

String jarFile = args[0];String pid = getPid(args);logger.info("Attaching agent to PID: " + pid);VirtualMachine vm = null;try {  vm = VirtualMachine.attach(pid);  vm.loadAgent(jarFile);  logger.info("Agent attached successfully");} catch (IOException ioException) {  logger.critical("load agent jar fail: " + jarFile);} catch (AttachNotSupportedException attachNotSupportedException) {  logger.critical("attach to jvm fail: " + pid);} catch (AgentLoadException | AgentInitializationException agentException) {  logger.critical("jvm load agent or agent init fail: " + pid);} finally {  if (vm!=null) {    vm.detach();  }}

public void exampleMethod(int a, int b) {  // do some thing 代码块0  if(a > 0){    // do some thing 代码块1  }else if(b > 0){    // do some thing 代码块2  }  // do some thing 代码块3}

<!-- https://mvnrepository.com/artifact/org.jacoco/org.jacoco.agent --><dependency>    <groupId>org.jacoco</groupId>    <artifactId>org.jacoco.agent</artifactId>    <version>0.8.12</version>    <scope>runtime</scope>    <classfier>runtime</classfier></dependency>

private void initClassLoader(ClassLoader parentClassLoader, File appPath, File appJar, String path, String appName) {    try {        File[] extFile = appPath.listFiles((dir, name1) -> "ext".equals(name1));        AppExtClassLoader extClassLoader = null;        if (extFile != null && extFile.length > 0) {            File[] extJars = extFile[0].listFiles((dir, name1) -> name1.endsWith(".jar"));            extClassLoader = new AppExtClassLoader(parentClassLoader, extJars);        }        File unzipFile = Paths.get(path, appName).toFile();        ZipFileUtils.unzip(new ZipFile(appJar), unzipFile);        this.classLoader = new AppClassLoader(unzipFile, extClassLoader != null ? extClassLoader : parentClassLoader);    } catch (Throwable e) {        throw new ContainerException("container constructor error init classloader", e);    }}

wget -c -O /home/admin/app/jacoco-runtime.jar "https://repo1.maven.org/maven2/org/JaCoCo/org.jacoco.agent/0.8.12/org.jacoco.agent-0.8.12-runtime.jar" && \

/*** 使用jacoco的数据结构做dump，返回dump是否成功** @param filePath dump的位置* @return 是否执行成功*/boolean jacocoDump(String filePath) throws IOException {  Agent iAgent = Agent.getInstance();  if (iAgent == null) {    DosaLogUtil.warnNew("Jacoco agent not found!");    return false;  }  AgentOptions agentOptions = buildOptions(filePath);  FileOutput fileOutput = new FileOutput();  fileOutput.startup(agentOptions, iAgent.getData());  fileOutput.writeExecutionData(true);  return true;}

/*** 克隆代码仓库** @param config 应用配置* @return 本地仓库路径，失败返回null*/public String cloneRepository(CodeProfilerAppConfigDO config) {  String appName = config.getAppName();  String localRepoPath = buildLocalRepoPath(appName);  try {    String ciToken = kcUtil.decrypt(config.getCiToken());    GitCloneRequest cloneRequest = new GitCloneRequest()      .setRepoUrl(config.getGitUrl())      .setBranch(config.getDefaultBranch())      .setTargetDir(localRepoPath)      .setCiToken(ciToken);    GitHelper.clone(cloneRequest);    return localRepoPath;  } catch (Exception exception) {    LOGGER.error("cloneRepository:clone failed for app: " + appName, exception);    return null;  }}

private static final String MAVEN_CMD = "/opt/apache-maven-3.9.11/bin/mvn";private static final String MAVEN_COMPILE = "compile";private static final String MAVEN_SKIP_TESTS = "-DskipTests=true";private static final String MAVEN_TEST_SKIP = "-Dmaven.test.skip=true";private static final String MAVEN_AUTO_CONFIG_INTERACTIVE = "-Dautoconfig.interactive=off";private static final String MAVEN_PROJECT_BUILD_SOURCE_ENCODING = "-Dproject.build.sourceEncoding=UTF-8";/** * Maven编译项目 * * @param config 应用配置 * @param localRepoPath 本地仓库路径 * @return 成功返回true，失败返回false*/public boolean compileProject(CodeProfilerAppConfigDO config, String localRepoPath) {  String appName = config.getAppName();  String[] commands = new String[] {    MAVEN_CMD, MAVEN_COMPILE, MAVEN_SKIP_TESTS, MAVEN_TEST_SKIP, MAVEN_AUTO_CONFIG_INTERACTIVE,    MAVEN_PROJECT_BUILD_SOURCE_ENCODING  };  try {    int exitCode = MavenHelper.execute(commands, localRepoPath);    if (exitCode == 0) {      LOGGER.info("maven build succeeded for app: " + appName);      return true;    } else {      LOGGER.error("maven build failed with exit code:" + exitCode);      return false;    }  } catch (IOException | InterruptedException exception) {    LOGGER.error("compileProject:maven build failed for app:" + appName, exception);    return false;  }}

/** * 创建XML格式的覆盖率报告 * * @param execFileLoader 执行数据加载器 * @param bundleCoverage 覆盖率分析结果 * @param xmlPath        XML报告文件路径 * @throws Exception 创建失败*/private void createXmlReport(ExecFileLoader execFileLoader, IBundleCoverage bundleCoverage, String xmlPath)  throws Exception {  final List<IReportVisitor> visitors = new ArrayList<>();  final XMLFormatter formatter = new XMLFormatter();  visitors.add(formatter.createVisitor(Files.newOutputStream(Paths.get(xmlPath))));  IReportVisitor reportVisitor = new MultiReportVisitor(visitors);  reportVisitor.visitInfo(execFileLoader.getSessionInfoStore().getInfos(),                          execFileLoader.getExecutionDataStore().getContents());  reportVisitor.visitBundle(bundleCoverage, null);  reportVisitor.visitEnd();}