Java tutorial
/* * Copyright 2017 NAVER Corp. * * Licensed 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 com.navercorp.pinpoint.bootstrap; import com.navercorp.pinpoint.common.Version; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.junit.Assert; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.util.jar.JarOutputStream; import java.util.jar.Manifest; /** * @author Woonduk Kang(emeroad) */ public class AgentDirGenerator { private final Logger logger = LoggerFactory.getLogger(this.getClass()); private static final String bootStrapJar = "pinpoint-bootstrap-" + Version.VERSION + ".jar"; private static final String commons = "pinpoint-commons-" + Version.VERSION + ".jar"; private static final String bootStrapCoreJar = "pinpoint-bootstrap-core-" + Version.VERSION + ".jar"; private static final String bootStrapJava9Jar = "pinpoint-bootstrap-java9-" + Version.VERSION + ".jar"; private static final String bootStrapCoreOptionalJar = "pinpoint-java7-" + Version.VERSION + ".jar"; private static final String annotations = "pinpoint-annotations-" + Version.VERSION + ".jar"; private final String agentDirPath; public AgentDirGenerator(String agentDirPath) { if (agentDirPath == null) { throw new NullPointerException("agentDirPath must not be null"); } this.agentDirPath = agentDirPath; } public void create() throws IOException { final File agentDir = createDir(agentDirPath); // create dummy bootstrap createJarFile(agentDir, bootStrapJar); File boot = createChildDir(agentDir, "boot"); createJarFile(boot, commons); createJarFile(boot, bootStrapCoreJar); createJarFile(boot, bootStrapJava9Jar); createJarFile(boot, bootStrapCoreOptionalJar); createJarFile(boot, annotations); } private File createChildDir(File agentDir, String childDir) { String childDirPath = agentDir.getAbsolutePath() + File.separator + childDir; return createDir(childDirPath); } private File createDir(String dirPath) { logger.debug("create dir:{}", dirPath); final File dir = new File(dirPath); if (!dir.exists()) { boolean mkdir = dir.mkdirs(); Assert.assertTrue(dir + " create fail", mkdir); } Assert.assertTrue(dirPath + " not a directory", dir.isDirectory()); Assert.assertTrue(dir.canWrite()); return dir; } private void createFile(File parentDir, String filepath) throws IOException { logger.debug("create file : {}/{}", parentDir, filepath); final File file = new File(parentDir, filepath); boolean newFile = file.createNewFile(); Assert.assertTrue(filepath + " create fail", newFile); } private void createJarFile(File parentDir, String filepath) throws IOException { final String jarPath = parentDir.getPath() + File.separator + filepath; logger.debug("create jar:{}", jarPath); JarOutputStream jos = null; try { Manifest manifest = new Manifest(); FileOutputStream out = new FileOutputStream(jarPath); jos = new JarOutputStream(out, manifest); } finally { IOUtils.closeQuietly(jos); } } public void remove() throws IOException { File file = new File(agentDirPath); try { FileUtils.deleteDirectory(file); } catch (IOException e) { logger.warn("unable to deleteDirectory. path:{}", file.getPath(), e); // Boot directory is not deleted. // Perhaps JarFile is not closed. FileUtils.forceDeleteOnExit(file); } } }