| /** |
| * 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.demo.tweetstore.config; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Preconditions.checkState; |
| import static com.google.common.base.Predicates.in; |
| import static com.google.common.collect.ImmutableSet.copyOf; |
| import static com.google.common.collect.Sets.filter; |
| import static org.jclouds.demo.tweetstore.reference.TweetStoreConstants.PROPERTY_TWEETSTORE_BLOBSTORES; |
| import static org.jclouds.demo.tweetstore.reference.TweetStoreConstants.PROPERTY_TWEETSTORE_CONTAINER; |
| import static org.jclouds.demo.tweetstore.reference.TwitterConstants.PROPERTY_TWITTER_ACCESSTOKEN; |
| import static org.jclouds.demo.tweetstore.reference.TwitterConstants.PROPERTY_TWITTER_ACCESSTOKEN_SECRET; |
| import static org.jclouds.demo.tweetstore.reference.TwitterConstants.PROPERTY_TWITTER_CONSUMER_KEY; |
| import static org.jclouds.demo.tweetstore.reference.TwitterConstants.PROPERTY_TWITTER_CONSUMER_SECRET; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Set; |
| |
| import javax.servlet.ServletContextEvent; |
| |
| import org.jclouds.ContextBuilder; |
| import org.jclouds.blobstore.BlobStoreContext; |
| import org.jclouds.demo.tweetstore.config.util.CredentialsCollector; |
| import org.jclouds.demo.tweetstore.controller.AddTweetsController; |
| import org.jclouds.demo.tweetstore.controller.ClearTweetsController; |
| import org.jclouds.demo.tweetstore.controller.EnqueueStoresController; |
| import org.jclouds.demo.tweetstore.controller.StoreTweetsController; |
| import org.jclouds.gae.config.GoogleAppEngineConfigurationModule; |
| |
| import twitter4j.Twitter; |
| import twitter4j.TwitterFactory; |
| import twitter4j.conf.Configuration; |
| import twitter4j.conf.ConfigurationBuilder; |
| |
| import com.google.appengine.api.taskqueue.Queue; |
| import com.google.appengine.api.taskqueue.QueueFactory; |
| import com.google.appengine.repackaged.com.google.common.base.Splitter; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| import com.google.common.io.Closeables; |
| import com.google.inject.Guice; |
| import com.google.inject.Injector; |
| import com.google.inject.Module; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.name.Names; |
| import com.google.inject.servlet.GuiceServletContextListener; |
| import com.google.inject.servlet.ServletModule; |
| |
| /** |
| * Setup Logging and create Injector for use in testing S3. |
| * |
| * @author Adrian Cole |
| */ |
| public class GuiceServletConfig extends GuiceServletContextListener { |
| public static final String PROPERTY_BLOBSTORE_CONTEXTS = "blobstore.contexts"; |
| |
| private Map<String, BlobStoreContext> providerTypeToBlobStoreMap; |
| private Twitter twitterClient; |
| private String container; |
| private Queue queue; |
| |
| @Override |
| public void contextInitialized(ServletContextEvent servletContextEvent) { |
| Properties props = loadJCloudsProperties(servletContextEvent); |
| |
| Module googleModule = new GoogleAppEngineConfigurationModule(); |
| Set<Module> modules = ImmutableSet.<Module> of(googleModule); |
| // shared across all blobstores and used to retrieve tweets |
| try { |
| Configuration twitterConf = new ConfigurationBuilder() |
| .setOAuthConsumerKey(props.getProperty(PROPERTY_TWITTER_CONSUMER_KEY)) |
| .setOAuthConsumerSecret(props.getProperty(PROPERTY_TWITTER_CONSUMER_SECRET)) |
| .setOAuthAccessToken(props.getProperty(PROPERTY_TWITTER_ACCESSTOKEN)) |
| .setOAuthAccessTokenSecret(props.getProperty(PROPERTY_TWITTER_ACCESSTOKEN_SECRET)) |
| .build(); |
| twitterClient = new TwitterFactory(twitterConf).getInstance(); |
| } catch (IllegalArgumentException e) { |
| throw new IllegalArgumentException("properties for twitter not configured properly in " + props.toString(), e); |
| } |
| // common namespace for storing tweets |
| container = checkNotNull(props.getProperty(PROPERTY_TWEETSTORE_CONTAINER), PROPERTY_TWEETSTORE_CONTAINER); |
| |
| // instantiate and store references to all blobstores by provider name |
| providerTypeToBlobStoreMap = Maps.newHashMap(); |
| for (String hint : getBlobstoreContexts(props)) { |
| providerTypeToBlobStoreMap.put(hint, ContextBuilder.newBuilder(hint) |
| .modules(modules).overrides(props).build(BlobStoreContext.class)); |
| } |
| |
| // get a queue for submitting store tweet requests |
| queue = QueueFactory.getQueue("twitter"); |
| |
| super.contextInitialized(servletContextEvent); |
| } |
| |
| private static Iterable<String> getBlobstoreContexts(Properties props) { |
| Set<String> contexts = new CredentialsCollector().apply(props).keySet(); |
| String explicitContexts = props.getProperty(PROPERTY_TWEETSTORE_BLOBSTORES); |
| if (explicitContexts != null) { |
| contexts = filter(contexts, in(copyOf(Splitter.on(',').split(explicitContexts)))); |
| } |
| checkState(!contexts.isEmpty(), "no credentials available for any requested context"); |
| return contexts; |
| } |
| |
| private Properties loadJCloudsProperties(ServletContextEvent servletContextEvent) { |
| InputStream input = servletContextEvent.getServletContext().getResourceAsStream("/WEB-INF/jclouds.properties"); |
| Properties props = new Properties(); |
| try { |
| props.load(input); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } finally { |
| Closeables.closeQuietly(input); |
| } |
| return props; |
| } |
| |
| @Override |
| protected Injector getInjector() { |
| return Guice.createInjector(new ServletModule() { |
| @Override |
| protected void configureServlets() { |
| bind(new TypeLiteral<Map<String, BlobStoreContext>>() { |
| }).toInstance(providerTypeToBlobStoreMap); |
| bind(Twitter.class).toInstance(twitterClient); |
| bind(Queue.class).toInstance(queue); |
| bindConstant().annotatedWith(Names.named(PROPERTY_TWEETSTORE_CONTAINER)).to(container); |
| serve("/store/*").with(StoreTweetsController.class); |
| serve("/tweets/*").with(AddTweetsController.class); |
| serve("/stores/*").with(EnqueueStoresController.class); |
| serve("/clear/*").with(ClearTweetsController.class); |
| } |
| }); |
| } |
| |
| @Override |
| public void contextDestroyed(ServletContextEvent servletContextEvent) { |
| for (BlobStoreContext context : providerTypeToBlobStoreMap.values()) { |
| context.close(); |
| } |
| queue.purge(); |
| super.contextDestroyed(servletContextEvent); |
| } |
| } |