| /** |
| * 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.atlas.web.service; |
| |
| import org.apache.atlas.AtlasConfiguration; |
| import org.apache.atlas.AtlasErrorCode; |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.eclipse.jetty.server.Connector; |
| import org.eclipse.jetty.server.HttpConfiguration; |
| import org.eclipse.jetty.server.HttpConnectionFactory; |
| import org.eclipse.jetty.server.Server; |
| import org.eclipse.jetty.server.ServerConnector; |
| import org.eclipse.jetty.util.thread.ExecutorThreadPool; |
| import org.eclipse.jetty.webapp.WebAppContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * This class embeds a Jetty server and a connector. |
| */ |
| public class EmbeddedServer { |
| public static final Logger LOG = LoggerFactory.getLogger(EmbeddedServer.class); |
| |
| protected final Server server; |
| |
| public EmbeddedServer(int port, String path) throws IOException { |
| int queueSize = AtlasConfiguration.WEBSERVER_QUEUE_SIZE.getInt(); |
| LinkedBlockingQueue<Runnable> queue = new LinkedBlockingQueue<>(queueSize); |
| |
| int minThreads = AtlasConfiguration.WEBSERVER_MIN_THREADS.getInt(); |
| int maxThreads = AtlasConfiguration.WEBSERVER_MAX_THREADS.getInt(); |
| long keepAliveTime = AtlasConfiguration.WEBSERVER_KEEPALIVE_SECONDS.getLong(); |
| ExecutorThreadPool pool = |
| new ExecutorThreadPool(minThreads, maxThreads, keepAliveTime, TimeUnit.SECONDS, queue); |
| server = new Server(pool); |
| |
| Connector connector = getConnector(port); |
| server.addConnector(connector); |
| |
| WebAppContext application = getWebAppContext(path); |
| server.setHandler(application); |
| } |
| |
| protected WebAppContext getWebAppContext(String path) { |
| WebAppContext application = new WebAppContext(path, "/"); |
| application.setClassLoader(Thread.currentThread().getContextClassLoader()); |
| // Disable directory listing |
| application.setInitParameter("org.eclipse.jetty.servlet.Default.dirAllowed", "false"); |
| return application; |
| } |
| |
| public static EmbeddedServer newServer(int port, String path, boolean secure) throws IOException { |
| if (secure) { |
| return new SecureEmbeddedServer(port, path); |
| } else { |
| return new EmbeddedServer(port, path); |
| } |
| } |
| |
| protected Connector getConnector(int port) throws IOException { |
| HttpConfiguration http_config = new HttpConfiguration(); |
| // this is to enable large header sizes when Kerberos is enabled with AD |
| final int bufferSize = AtlasConfiguration.WEBSERVER_REQUEST_BUFFER_SIZE.getInt();; |
| http_config.setResponseHeaderSize(bufferSize); |
| http_config.setRequestHeaderSize(bufferSize); |
| |
| ServerConnector connector = new ServerConnector(server, new HttpConnectionFactory(http_config)); |
| connector.setPort(port); |
| connector.setHost("0.0.0.0"); |
| return connector; |
| } |
| |
| public void start() throws AtlasBaseException { |
| try { |
| server.start(); |
| server.join(); |
| } catch(Exception e) { |
| throw new AtlasBaseException(AtlasErrorCode.EMBEDDED_SERVER_START, e); |
| } |
| } |
| |
| public void stop() { |
| try { |
| server.stop(); |
| } catch (Exception e) { |
| LOG.warn("Error during shutdown", e); |
| } |
| } |
| } |