| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds 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.jclouds.dynect.v3.filters; |
| |
| import static org.jclouds.http.HttpUtils.closeClientButKeepContentStream; |
| import static org.jclouds.http.HttpUtils.releasePayload; |
| |
| import javax.annotation.PreDestroy; |
| import javax.annotation.Resource; |
| |
| import org.jclouds.domain.Credentials; |
| import org.jclouds.dynect.v3.domain.Session; |
| import org.jclouds.dynect.v3.domain.SessionCredentials; |
| import org.jclouds.dynect.v3.features.SessionApi; |
| import org.jclouds.http.HttpCommand; |
| import org.jclouds.http.HttpException; |
| import org.jclouds.http.HttpRequest; |
| import org.jclouds.http.HttpRequest.Builder; |
| import org.jclouds.http.HttpRequestFilter; |
| import org.jclouds.http.HttpResponse; |
| import org.jclouds.http.handlers.BackoffLimitedRetryHandler; |
| import org.jclouds.location.Provider; |
| import org.jclouds.logging.Logger; |
| |
| import com.google.common.base.Supplier; |
| import com.google.common.cache.CacheBuilder; |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| /** |
| * |
| * This class manages session interactions, including grabbing latest from the |
| * cache, and invalidating upon 401 If the credentials supplied in the |
| * authentication header are invalid, or if the token has expired, the server |
| * returns HTTP response code 401. After the token expires, you must log in |
| * again to obtain a new token. |
| * |
| * @author Adrian Cole |
| * |
| */ |
| @Singleton |
| public final class SessionManager extends BackoffLimitedRetryHandler implements HttpRequestFilter { |
| |
| @Resource |
| private Logger logger = Logger.NULL; |
| |
| private final Supplier<Credentials> creds; |
| private final SessionApi sessionApi; |
| private final LoadingCache<Credentials, Session> sessionCache; |
| |
| @Inject |
| SessionManager(@Provider Supplier<Credentials> creds, SessionApi sessionApi) { |
| this(creds, buildCache(sessionApi), sessionApi); |
| } |
| |
| SessionManager(@Provider Supplier<Credentials> creds, LoadingCache<Credentials, Session> sessionCache, |
| SessionApi sessionApi) { |
| this.creds = creds; |
| this.sessionCache = sessionCache; |
| this.sessionApi = sessionApi; |
| } |
| |
| static LoadingCache<Credentials, Session> buildCache(final SessionApi sessionApi) { |
| return CacheBuilder.newBuilder().build(new CacheLoader<Credentials, Session>() { |
| public Session load(Credentials key) { |
| return sessionApi.login(convert(key)); |
| } |
| }); |
| } |
| |
| static SessionCredentials convert(Credentials key) { |
| if (key instanceof SessionCredentials) |
| return SessionCredentials.class.cast(key); |
| return SessionCredentials.builder().customerName(key.identity.substring(0, key.identity.indexOf(':'))) |
| .userName(key.identity.substring(key.identity.indexOf(':') + 1)).password(key.credential).build(); |
| } |
| |
| @Override |
| public HttpRequest filter(HttpRequest request) throws HttpException { |
| Session session = sessionCache.getUnchecked(creds.get()); |
| Builder<?> builder = request.toBuilder(); |
| builder.replaceHeader("Auth-Token", session.getToken()); |
| return builder.build(); |
| } |
| |
| private static final String IP_MISMATCH = "IP address does not match current session"; |
| |
| @Override |
| public boolean shouldRetryRequest(HttpCommand command, HttpResponse response) { |
| boolean retry = false; // default |
| try { |
| byte[] data = closeClientButKeepContentStream(response); |
| String message = data != null ? new String(data) : null; |
| if (response.getStatusCode() == 401 || (message != null && message.indexOf(IP_MISMATCH) != -1)) { |
| logger.debug("invalidating session"); |
| sessionCache.invalidateAll(); |
| retry = super.shouldRetryRequest(command, response); |
| } |
| return retry; |
| } finally { |
| releasePayload(response); |
| } |
| } |
| |
| /** |
| * it is important that we close any sessions on close to help the server not |
| * become overloaded. |
| */ |
| @PreDestroy |
| public void logoutOnClose() { |
| for (Session s : sessionCache.asMap().values()) { |
| try { |
| sessionApi.logout(s.getToken()); |
| } catch (Exception e) { |
| logger.error(e, "error logging out session %s", s); |
| } |
| } |
| } |
| } |