com.ijuru.tweetgrab.Context.java Source code

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Here is the source code for com.ijuru.tweetgrab.Context.java

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/**
 * Copyright 2011 Rowan Seymour
 *
 * This file is part of TweetGrab.
 *
 * TweetGrab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * TweetGrab 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with TweetGrab. If not, see <http://www.gnu.org/licenses/>.
 */

package com.ijuru.tweetgrab;

import org.codehaus.jackson.map.ObjectMapper;

import twitter4j.TwitterFactory;
import twitter4j.conf.ConfigurationBuilder;

/**
 * Application context
 */
public class Context {

    private static final String ENVVAR_NAME = "TWEETGRAB_OPTIONS";
    private static final String JVMPROP_NAME = "tweetgrab.options";

    private static Options options;

    private static TwitterFactory twitterFactory;

    /**
     * Starts the application
     * @throws Exception 
     */
    public static void startApplication() throws Exception {
        // Look for environment variable or system property
        String optionsJSON = System.getenv(ENVVAR_NAME);
        if (optionsJSON == null) {
            optionsJSON = System.getProperty(JVMPROP_NAME);
            if (optionsJSON == null) {
                throw new Exception("Could not find environment variable (" + ENVVAR_NAME + ") or JVM property ("
                        + JVMPROP_NAME + ")");
            }
        }

        ObjectMapper mapper = new ObjectMapper();
        options = mapper.readValue(optionsJSON, Options.class);

        ConfigurationBuilder cb = new ConfigurationBuilder();
        cb.setDebugEnabled(false).setOAuthConsumerKey(options.getCredentials().get("consumerKey"))
                .setOAuthConsumerSecret(options.getCredentials().get("consumerSecret"))
                .setOAuthAccessToken(options.getCredentials().get("accessToken"))
                .setOAuthAccessTokenSecret(options.getCredentials().get("accessTokenSecret"));

        twitterFactory = new TwitterFactory(cb.build());
    }

    public static void destroyApplication() {

    }

    public static Options getOptions() {
        return options;
    }

    public static TwitterFactory getTwitterFactory() {
        return twitterFactory;
    }
}