106umao commented on code in PR #10689: URL: https://github.com/apache/dolphinscheduler/pull/10689#discussion_r945301740
########## dolphinscheduler-task-plugin/dolphinscheduler-task-java/src/main/java/org/apache/dolphinscheduler/plugin/task/java/JavaTask.java: ########## @@ -0,0 +1,422 @@ +/* + * 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.dolphinscheduler.plugin.task.java; + +import static org.apache.dolphinscheduler.plugin.task.api.TaskConstants.SINGLE_SLASH; +import static org.apache.dolphinscheduler.plugin.task.java.JavaConstants.JAVA_HOME_VAR; +import static org.apache.dolphinscheduler.plugin.task.java.JavaConstants.PUBLIC_CLASS_NAME_REGEX; + + +import org.apache.dolphinscheduler.plugin.task.api.AbstractTaskExecutor; +import org.apache.dolphinscheduler.plugin.task.api.ShellCommandExecutor; +import org.apache.dolphinscheduler.plugin.task.api.TaskConstants; +import org.apache.dolphinscheduler.plugin.task.api.TaskException; +import org.apache.dolphinscheduler.plugin.task.api.TaskExecutionContext; +import org.apache.dolphinscheduler.plugin.task.api.model.Property; +import org.apache.dolphinscheduler.plugin.task.api.model.ResourceInfo; +import org.apache.dolphinscheduler.plugin.task.api.model.TaskResponse; +import org.apache.dolphinscheduler.plugin.task.api.parameters.AbstractParameters; +import org.apache.dolphinscheduler.plugin.task.api.parser.ParamUtils; +import org.apache.dolphinscheduler.plugin.task.api.parser.ParameterUtils; +import org.apache.dolphinscheduler.plugin.task.api.utils.MapUtils; +import org.apache.dolphinscheduler.plugin.task.java.exception.JavaSourceFileExistException; +import org.apache.dolphinscheduler.plugin.task.java.exception.PublicClassNotFoundException; +import org.apache.dolphinscheduler.plugin.task.java.exception.RunTypeNotFoundException; +import org.apache.dolphinscheduler.spi.utils.JSONUtils; + +import org.apache.commons.io.FileUtils; +import org.apache.commons.lang3.SystemUtils; + +import java.io.File; +import java.io.IOException; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.HashMap; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import com.google.common.base.Preconditions; + +/** + * java task + */ +public class JavaTask extends AbstractTaskExecutor { + + /** + * Contains various parameters for this task + */ + private JavaParameters javaParameters; + + /** + * To run shell commands + */ + private ShellCommandExecutor shellCommandExecutor; + + /** + * task execution context + */ + private TaskExecutionContext taskRequest; + + /** + * class name regex pattern + */ + private static final Pattern classNamePattern = Pattern.compile(PUBLIC_CLASS_NAME_REGEX); + + /** + * @description: Construct a Java task + * @param: [org.apache.dolphinscheduler.plugin.task.api.TaskExecutionContext] + * @return: JavaTask + **/ + public JavaTask(TaskExecutionContext taskRequest) { + super(taskRequest); + this.taskRequest = taskRequest; + this.shellCommandExecutor = new ShellCommandExecutor(this::logHandle, + taskRequest, + logger); + } + + /** + * @description: Initializes a Java task + * @param: [] + * @return: void + **/ + @Override + public void init() { + logger.info("java task params {}", taskRequest.getTaskParams()); + javaParameters = JSONUtils.parseObject(taskRequest.getTaskParams(), JavaParameters.class); + if (javaParameters == null || !javaParameters.checkParameters()) { + throw new TaskException("java task params is not valid"); + } + if (javaParameters.getRunType().equals(JavaConstants.RUN_TYPE_JAR)) { + setMainJarName(); + } + } + + /** + * @description: Gets the Java source file that was initially processed + * @param: [] + * @return: java.lang.String + **/ + @Override + public String getPreScript() { + String rawJavaScript = javaParameters.getRawScript().replaceAll("\\r\\n", "\n"); + try { + rawJavaScript = convertJavaSourceCodePlaceholders(rawJavaScript); + } catch (StringIndexOutOfBoundsException e) { + logger.error("setShareVar field format error, raw java script : {}", rawJavaScript); + } + return rawJavaScript; + } + + /** + * @description: Execute Java tasks + * @param: [] + * @return: void + **/ + @Override + public void handle() throws Exception { + try { + // Step 1: judge if is java or jar run type. + // Step 2 case1: The jar run type builds the command directly, adding resource to the java -jar class when building the command + // Step 2 case2: The java run type, first replace the custom parameters, then compile the code, and then build the command will add resource + // Step 3: To run the command + String command = null; + switch (javaParameters.getRunType()) { + case JavaConstants.RUN_TYPE_JAVA: + command = buildJavaCommand(); + break; + case JavaConstants.RUN_TYPE_JAR: + command = buildJarCommand(); + break; + default: + throw new RunTypeNotFoundException("run type is required, but it is null now."); + } + Preconditions.checkNotNull(command, "command not be null."); + TaskResponse taskResponse = shellCommandExecutor.run(command); + logger.info("java task run result : {}", taskResponse); + setExitStatusCode(taskResponse.getExitStatusCode()); + setAppIds(taskResponse.getAppIds()); + setProcessId(taskResponse.getProcessId()); + setVarPool(shellCommandExecutor.getVarPool()); + } catch (InterruptedException e) { + logger.error("java task interrupted ", e); + setExitStatusCode(TaskConstants.EXIT_CODE_FAILURE); + Thread.currentThread().interrupt(); + } catch (RunTypeNotFoundException e) { + logger.error(e.getMessage()); + setExitStatusCode(TaskConstants.EXIT_CODE_FAILURE); + throw e; + } catch (Exception e) { + logger.error("java task failed ", e); + setExitStatusCode(TaskConstants.EXIT_CODE_FAILURE); + throw new TaskException("run java task error", e); + } + } + + /** + * @description: Construct a shell command for the java Run mode + * @param: [] + * @return: java.lang.String + **/ + protected String buildJavaCommand() throws Exception { + String sourceCode = buildJavaSourceContent(); + String className = compilerRawScript(sourceCode); + StringBuilder builder = new StringBuilder(); + builder.append(getJavaCommandPath()) + .append("java").append(" ") + .append(buildResourcePath()) + .append(" ") + .append(className).append(" ") + .append(javaParameters.getMainArgs().trim()).append(" ") + .append(javaParameters.getJvmArgs().trim()); + return builder.toString(); + } + + private void setMainJarName() { + ResourceInfo mainJar = javaParameters.getMainJar(); + String resourceName = getResourceNameOfMainJar(mainJar); + mainJar.setRes(resourceName); + javaParameters.setMainJar(mainJar); + } + + /** + * @description: Construct a shell command for the java -jar Run mode + * @param: [] + * @return: java.lang.String + **/ + protected String buildJarCommand() { + String fullName = javaParameters.getMainJar().getResourceName(); + String mainJarName = fullName.substring(0, fullName.lastIndexOf('.')); + mainJarName = mainJarName.substring(mainJarName.lastIndexOf('.') + 1) + ".jar"; + StringBuilder builder = new StringBuilder(); + builder.append(getJavaCommandPath()) + .append("java").append(" ") + .append(buildResourcePath()).append(" ") + .append("-jar").append(" ") + .append(taskRequest.getExecutePath()) + .append(mainJarName).append(" ") + .append(javaParameters.getMainArgs().trim()).append(" ") + .append(javaParameters.getJvmArgs().trim()); + return builder.toString(); + } + + private String getResourceNameOfMainJar(ResourceInfo mainJar) { + if (null == mainJar) { + throw new RuntimeException("The jar for the task is required."); + } + return mainJar.getId() == 0 + ? mainJar.getRes() + // when update resource maybe has error + : mainJar.getResourceName().replaceFirst(SINGLE_SLASH, ""); + } + + @Override + public void cancelApplication(boolean cancelApplication) throws Exception { + // cancel process + shellCommandExecutor.cancelApplication(); + } + + @Override + public AbstractParameters getParameters() { + return javaParameters; + } + + /** + * @description: Replaces placeholders such as local variables in source files + * @param: [java.lang.String] + * @return: java.lang.String + **/ + protected static String convertJavaSourceCodePlaceholders(String rawScript) throws StringIndexOutOfBoundsException { + int len = "${setShareVar(${".length(); + int scriptStart = 0; + while ((scriptStart = rawScript.indexOf("${setShareVar(${", scriptStart)) != -1) { + int start = -1; + int end = rawScript.indexOf('}', scriptStart + len); + String prop = rawScript.substring(scriptStart + len, end); + + start = rawScript.indexOf(',', end); + end = rawScript.indexOf(')', start); + + String value = rawScript.substring(start + 1, end); + + start = rawScript.indexOf('}', start) + 1; + end = rawScript.length(); + + String replaceScript = String.format("print(\"${{setValue({},{})}}\".format(\"%s\",%s))", prop, value); + + rawScript = rawScript.substring(0, scriptStart) + replaceScript + rawScript.substring(start, end); + + scriptStart += replaceScript.length(); + } + return rawScript; + } + + /** + * @description: Creates a Java source file when it does not exist + * @param: [java.lang.String, java.lang.String] + * @return: java.lang.String + **/ + protected void createJavaSourceFileIfNotExists(String sourceCode, String fileName) throws IOException { + logger.info("tenantCode: {}, task dir:{}", taskRequest.getTenantCode(), taskRequest.getExecutePath()); + + if (!Files.exists(Paths.get(fileName))) { + logger.info("generate java source file: {}", fileName); + + StringBuilder sb = new StringBuilder(); + sb.append(sourceCode); + logger.info(sb.toString()); + + // write data to file + FileUtils.writeStringToFile(new File(fileName), + sb.toString(), + StandardCharsets.UTF_8); Review Comment: Thank you. 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