sipackage.mvc.controller.HomeController.java Source code

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Here is the source code for sipackage.mvc.controller.HomeController.java

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/*
 * Copyright 2002-2013 the original author or authors
 *
 *     Licensed 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 sipackage.mvc.controller;

import java.util.SortedSet;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import sipackage.model.TwitterAdapterStatus;
import sipackage.model.TwitterMessage;
import sipackage.model.TwitterMessages;
import sipackage.service.TwitterService;
import sipackage.support.SortOrder;

/**
 * Handles requests for the application home page.
 *
 * @author SI-TEMPLATE-AUTHOR
 * @since  SI-TEMPLATE-VERSION
 *
 */
@Controller
@RequestMapping
public class HomeController {

    private static final Logger LOGGER = Logger.getLogger(HomeController.class);

    @Autowired
    private TwitterService twitterService;

    /**
     * Simply selects the home view to render by returning its name.
     */
    @RequestMapping(value = { "/", "/tweets" })
    public String home(Model model, @RequestParam(required = false) Long latestTweetId,
            @RequestParam(defaultValue = "DESCENDING", required = false) SortOrder sortOrder) {

        if (latestTweetId == null) {
            latestTweetId = 0L;
        }

        final SortedSet<TwitterMessage> twitterMessages = twitterService.getTwitterMessages(latestTweetId,
                sortOrder);

        TwitterMessages twitterMessagesWrapper = new TwitterMessages();

        if (twitterMessages == null || twitterMessages.isEmpty()) {
            twitterMessagesWrapper.setLatestTweetId(latestTweetId);
        } else {
            twitterMessagesWrapper.setTwitterMessages(twitterMessages);
        }

        twitterMessagesWrapper.setAdapterRunning(twitterService.isTwitterAdapterRunning());

        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug(String.format("Latest Tweet ID: '%s'; Adapter running: %s",
                    twitterMessagesWrapper.getLatestTweetId(), twitterMessagesWrapper.isAdapterRunning()));
        }

        model.addAttribute("tweets", twitterMessagesWrapper);

        return "home";
    }

    @ResponseBody
    @RequestMapping(value = { "/adapter/{state}" })
    public void state(@PathVariable String state) {

        if ("start".equalsIgnoreCase(state)) {
            twitterService.startTwitterAdapter();
        } else if ("stop".equalsIgnoreCase(state)) {
            twitterService.stopTwitterAdapter();
        }

    }

    @ResponseBody
    @RequestMapping(value = { "/adapter-running" })
    public TwitterAdapterStatus isRunning() {
        TwitterAdapterStatus status = new TwitterAdapterStatus(twitterService.isTwitterAdapterRunning());
        return status;
    }
}