| /** |
| * 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.ambari.server.view; |
| |
| import org.apache.ambari.server.controller.AmbariManagementController; |
| import org.apache.ambari.server.controller.AmbariSessionManager; |
| import org.apache.ambari.server.controller.internal.URLStreamProvider; |
| import org.apache.ambari.server.proxy.ProxyService; |
| import org.apache.ambari.view.AmbariHttpException; |
| import org.apache.ambari.view.AmbariStreamProvider; |
| import org.apache.commons.io.IOUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.HttpURLConnection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Provider of an input stream for a request to the Ambari server. |
| */ |
| public class ViewAmbariStreamProvider implements AmbariStreamProvider { |
| /** |
| * Internal stream provider. |
| */ |
| private final URLStreamProvider streamProvider; |
| |
| /** |
| * The Ambari session manager. |
| */ |
| private final AmbariSessionManager ambariSessionManager; |
| |
| /** |
| * The Ambari management controller. |
| */ |
| private final AmbariManagementController controller; |
| |
| private static Logger LOG = LoggerFactory.getLogger(ViewAmbariStreamProvider.class); |
| |
| |
| // ----- Constructor ----------------------------------------------------- |
| |
| /** |
| * Construct a view Ambari stream provider. |
| * |
| * @param streamProvider the underlying stream provider |
| * @param ambariSessionManager the Ambari session manager |
| * @param controller the Ambari configuration |
| * |
| * @throws IllegalStateException if the Ambari stream provider can not be created |
| */ |
| protected ViewAmbariStreamProvider(URLStreamProvider streamProvider, AmbariSessionManager ambariSessionManager, |
| AmbariManagementController controller) { |
| this.streamProvider = streamProvider; |
| this.ambariSessionManager = ambariSessionManager; |
| this.controller = controller; |
| } |
| |
| |
| // ----- AmbariStreamProvider ----------------------------------------------- |
| |
| @Override |
| public InputStream readFrom(String path, String requestMethod, String body, Map<String, String> headers |
| ) throws IOException, AmbariHttpException { |
| return getInputStream(path, requestMethod, headers, body == null ? null : body.getBytes()); |
| } |
| |
| @Override |
| public InputStream readFrom(String path, String requestMethod, InputStream body, Map<String, String> headers |
| ) throws IOException, AmbariHttpException { |
| |
| return getInputStream(path, requestMethod, headers, body == null ? null : IOUtils.toByteArray(body)); |
| } |
| |
| |
| // ----- helper methods ---------------------------------------------------- |
| |
| private InputStream getInputStream(String path, String requestMethod, Map<String, String> headers |
| , byte[] body) throws IOException, AmbariHttpException { |
| // add the Ambari session cookie to the given headers |
| String sessionId = ambariSessionManager.getCurrentSessionId(); |
| if (sessionId != null) { |
| |
| String ambariSessionCookie = ambariSessionManager.getSessionCookie() + "=" + sessionId; |
| |
| if (headers == null || headers.isEmpty()) { |
| headers = Collections.singletonMap(URLStreamProvider.COOKIE, ambariSessionCookie); |
| } else { |
| headers = new HashMap<String, String>(headers); |
| |
| String cookies = headers.get(URLStreamProvider.COOKIE); |
| |
| headers.put(URLStreamProvider.COOKIE, URLStreamProvider.appendCookie(cookies, ambariSessionCookie)); |
| } |
| } |
| |
| // adapt the headers for the internal URLStreamProvider signature |
| Map<String, List<String>> headerMap = new HashMap<String, List<String>>(); |
| for (Map.Entry<String, String> entry : headers.entrySet()) { |
| headerMap.put(entry.getKey(), Collections.singletonList(entry.getValue())); |
| } |
| |
| return getInputStream(streamProvider.processURL(controller.getAmbariServerURI(path.startsWith("/") ? path : "/" + path), |
| requestMethod, body, headerMap)); |
| } |
| |
| private InputStream getInputStream(HttpURLConnection connection) throws IOException, AmbariHttpException { |
| int responseCode = connection.getResponseCode(); |
| if (responseCode >= ProxyService.HTTP_ERROR_RANGE_START) { |
| String message = connection.getResponseMessage(); |
| if (connection.getErrorStream() != null) { |
| message = IOUtils.toString(connection.getErrorStream()); |
| } |
| LOG.error("Got error response for url {}. Response code:{}. {}", connection.getURL(), responseCode, message); |
| throw new AmbariHttpException(message, responseCode); |
| } |
| return connection.getInputStream(); |
| } |
| } |
| |