| /* |
| * 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.oap.server.core; |
| |
| import java.io.File; |
| import java.net.MalformedURLException; |
| import java.net.URISyntaxException; |
| import java.net.URL; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Locate the base work path of OAP backend. |
| */ |
| public class WorkPath { |
| private static final Logger LOGGER = LoggerFactory.getLogger(WorkPath.class); |
| |
| private static File PATH; |
| |
| public static File getPath() { |
| if (PATH == null) { |
| PATH = findPath(); |
| } |
| return PATH; |
| } |
| |
| private static File findPath() { |
| String classResourcePath = WorkPath.class.getName().replaceAll("\\.", "/") + ".class"; |
| |
| URL resource = ClassLoader.getSystemClassLoader().getResource(classResourcePath); |
| if (resource != null) { |
| String urlString = resource.toString(); |
| |
| LOGGER.debug("The beacon class location is {}.", urlString); |
| |
| int insidePathIndex = urlString.indexOf('!'); |
| boolean isInJar = insidePathIndex > -1; |
| |
| if (isInJar) { |
| urlString = urlString.substring(urlString.indexOf("file:"), insidePathIndex); |
| File agentJarFile = null; |
| try { |
| agentJarFile = new File(new URL(urlString).toURI()); |
| } catch (MalformedURLException e) { |
| throw new UnexpectedException("Can not locate oap core jar file by url:" + urlString, e); |
| } catch (URISyntaxException e) { |
| throw new UnexpectedException("Can not locate oap core jar file by url:" + urlString, e); |
| } |
| if (agentJarFile.exists()) { |
| return agentJarFile.getParentFile(); |
| } |
| } else { |
| int prefixLength = "file:".length(); |
| String classLocation = urlString.substring(prefixLength, urlString.length() - classResourcePath.length()); |
| return new File(classLocation); |
| } |
| } |
| |
| throw new UnexpectedException("Can not locate oap core jar file by path:" + classResourcePath); |
| } |
| } |