Java tutorial
/** * Copyright (C) 2010 Cubeia Ltd <info@cubeia.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.cubeia.poker.handhistory.storage; import com.cubeia.firebase.api.server.SystemException; import com.cubeia.firebase.api.service.Service; import com.cubeia.firebase.api.service.ServiceContext; import com.cubeia.games.poker.common.mongo.DatabaseStorageConfiguration; import com.cubeia.games.poker.common.mongo.MongoStorage; import com.cubeia.poker.handhistory.api.HandHistoryPersistenceService; import com.cubeia.poker.handhistory.api.HistoricHand; import com.cubeia.poker.handhistory.impl.JsonHandHistoryLogger; import com.mongodb.BasicDBObject; import com.mongodb.DBCollection; import org.apache.log4j.Logger; /** * A database based implementation of the hand history persistence service, which stores the hand * history in a MongoDB database. */ public class DatabaseStorageService implements HandHistoryPersistenceService, Service { private static final Logger log = Logger.getLogger(DatabaseStorageService.class); private DatabaseStorageConfiguration configuration; private MongoStorage mongoStorage; private JsonHandHistoryLogger jsonLogger; public void persist(HistoricHand hand) { try { mongoStorage.persist(hand); } catch (Exception e) { log.warn("Failed persisting hand history to mondodb. Please start a mongodb server on host " + configuration.getHost() + " and port " + configuration.getPort(), e); jsonLogger.persist(hand); } } @Override public void init(ServiceContext context) throws SystemException { configuration = getConfiguration(context); mongoStorage = getMongoStorage(); jsonLogger = new JsonHandHistoryLogger(); } protected DatabaseStorageConfiguration getConfiguration(ServiceContext context) { return new DatabaseStorageConfiguration().load(context.getServerConfigDirectory().getAbsolutePath()); } protected MongoStorage getMongoStorage() { return new MongoStorage(configuration); } private void initHandsCollection() { mongoStorage.map(HistoricHand.class); //Indexing DBCollection coll = mongoStorage.getCollection(HistoricHand.class.getSimpleName()); if (0 == coll.getCount()) { coll.createIndex(new BasicDBObject("startTime", -1)); } } @Override public void start() { mongoStorage.connect(); initHandsCollection(); } @Override public void stop() { mongoStorage.disconnect(); } @Override public void destroy() { } }