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/*
* Copyright 2012 Jesse Morgan
*/
package com.p4square.grow.backend;
import java.io.IOException;
import org.apache.log4j.Logger;
import org.restlet.Application;
import org.restlet.Component;
import org.restlet.data.Protocol;
import org.restlet.Restlet;
import org.restlet.routing.Router;
import com.p4square.grow.config.Config;
import com.p4square.grow.backend.db.CassandraDatabase;
import com.p4square.grow.backend.db.CassandraKey;
import com.p4square.grow.backend.db.CassandraProviderImpl;
import com.p4square.grow.backend.db.CassandraCollectionProvider;
import com.p4square.grow.backend.db.CassandraTrainingRecordProvider;
import com.p4square.grow.model.Question;
import com.p4square.grow.model.TrainingRecord;
import com.p4square.grow.model.Playlist;
import com.p4square.grow.model.MessageThread;
import com.p4square.grow.model.Message;
import com.p4square.grow.provider.CollectionProvider;
import com.p4square.grow.provider.Provider;
import com.p4square.grow.provider.ProvidesQuestions;
import com.p4square.grow.provider.ProvidesTrainingRecords;
import com.p4square.grow.provider.QuestionProvider;
import com.p4square.grow.backend.resources.AccountResource;
import com.p4square.grow.backend.resources.BannerResource;
import com.p4square.grow.backend.resources.SurveyResource;
import com.p4square.grow.backend.resources.SurveyResultsResource;
import com.p4square.grow.backend.resources.TrainingRecordResource;
import com.p4square.grow.backend.resources.TrainingResource;
import com.p4square.grow.backend.feed.FeedDataProvider;
import com.p4square.grow.backend.feed.ThreadResource;
import com.p4square.grow.backend.feed.TopicResource;
/**
* Main class for the backend application.
*
* @author Jesse Morgan <jesse@jesterpm.net>
*/
public class GrowBackend extends Application
implements ProvidesQuestions, ProvidesTrainingRecords, FeedDataProvider {
private static final String DEFAULT_COLUMN = "value";
private final static Logger LOG = Logger.getLogger(GrowBackend.class);
private final Config mConfig;
private final CassandraDatabase mDatabase;
private final Provider<String, Question> mQuestionProvider;
private final CassandraTrainingRecordProvider mTrainingRecordProvider;
private final CollectionProvider<String, String, MessageThread> mFeedThreadProvider;
private final CollectionProvider<String, String, Message> mFeedMessageProvider;
public GrowBackend() {
this(new Config());
}
public GrowBackend(Config config) {
mConfig = config;
mDatabase = new CassandraDatabase();
mQuestionProvider = new QuestionProvider<CassandraKey>(new CassandraProviderImpl<Question>(mDatabase, Question.class)) {
@Override
public CassandraKey makeKey(String questionId) {
return new CassandraKey("strings", "/questions/" + questionId, DEFAULT_COLUMN);
}
};
mFeedThreadProvider = new CassandraCollectionProvider<MessageThread>(mDatabase,
"feedthreads", MessageThread.class);
mFeedMessageProvider = new CassandraCollectionProvider<Message>(mDatabase,
"feedmessages", Message.class);
mTrainingRecordProvider = new CassandraTrainingRecordProvider(mDatabase);
}
@Override
public Restlet createInboundRoot() {
Router router = new Router(getContext());
// Account API
router.attach("/accounts/{userId}", AccountResource.class);
// Survey API
router.attach("/assessment/question/{questionId}", SurveyResource.class);
router.attach("/accounts/{userId}/assessment", SurveyResultsResource.class);
router.attach("/accounts/{userId}/assessment/answers/{questionId}",
SurveyResultsResource.class);
// Training API
router.attach("/training/{level}", TrainingResource.class);
router.attach("/training/{level}/videos/{videoId}", TrainingResource.class);
router.attach("/accounts/{userId}/training", TrainingRecordResource.class);
router.attach("/accounts/{userId}/training/videos/{videoId}",
TrainingRecordResource.class);
// Misc.
router.attach("/banner", BannerResource.class);
// Feed
router.attach("/feed/{topic}", TopicResource.class);
router.attach("/feed/{topic}/{thread}", ThreadResource.class);
//router.attach("/feed/{topic/{thread}/{message}", MessageResource.class);
return router;
}
/**
* Open the database.
*/
@Override
public void start() throws Exception {
super.start();
// Setup database
mDatabase.setClusterName(mConfig.getString("clusterName", "Dev Cluster"));
mDatabase.setKeyspaceName(mConfig.getString("keyspace", "GROW"));
mDatabase.init();
}
/**
* Close the database.
*/
@Override
public void stop() throws Exception {
LOG.info("Shutting down...");
mDatabase.close();
super.stop();
}
/**
* @return the current database.
*/
public CassandraDatabase getDatabase() {
return mDatabase;
}
@Override
public Provider<String, Question> getQuestionProvider() {
return mQuestionProvider;
}
@Override
public Provider<String, TrainingRecord> getTrainingRecordProvider() {
return mTrainingRecordProvider;
}
/**
* @return the Default Playlist.
*/
public Playlist getDefaultPlaylist() throws IOException {
return mTrainingRecordProvider.getDefaultPlaylist();
}
@Override
public CollectionProvider<String, String, MessageThread> getThreadProvider() {
return mFeedThreadProvider;
}
@Override
public CollectionProvider<String, String, Message> getMessageProvider() {
return mFeedMessageProvider;
}
/**
* Stand-alone main for testing.
*/
public static void main(String[] args) throws Exception {
// Start the HTTP Server
final Component component = new Component();
component.getServers().add(Protocol.HTTP, 9095);
component.getClients().add(Protocol.HTTP);
component.getDefaultHost().attach(new GrowBackend());
// Setup shutdown hook
Runtime.getRuntime().addShutdownHook(new Thread() {
public void run() {
try {
component.stop();
} catch (Exception e) {
LOG.error("Exception during cleanup", e);
}
}
});
LOG.info("Starting server...");
try {
component.start();
} catch (Exception e) {
LOG.fatal("Could not start: " + e.getMessage(), e);
}
}
}
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