MessagingService.java

package swag49.web.service;

import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;
import swag49.dao.DataAccessObject;
import swag49.model.Player;
import swag49.transfer.model.MessageDTO;
import swag49.transfer.model.PlayerDTO;
import swag49.util.Log;
import swag49.web.InternalMessageStore;

import java.util.Collection;

@Controller
public class MessagingService {

    @Log
    private Logger log;

    @Autowired
    @Qualifier("playerDAO")
    private DataAccessObject<Player, Long> playerDAO;

    @Autowired
    private InternalMessageStore messageStore;

    @RequestMapping(value = "/messaging/user/{userId}", method = RequestMethod.GET)
    @ResponseBody
    @Transactional("swag49.map")
    public PlayerDTO getUser(@PathVariable("userId") String userId) {
        Player playerExample = new Player();
        //noinspection NullableProblems
        playerExample.setResources(null);
        //noinspection NullableProblems
        playerExample.setUpkeep(null);
        //noinspection NullableProblems
        playerExample.setIncome(null);
        playerExample.setTroops(null);
        playerExample.setActions(null);
        playerExample.setOwns(null);
        playerExample.setUserId(userId);

        Collection<Player> queryResult = playerDAO.queryByExample(playerExample);

        if(queryResult.size() != 1) {
            log.warn("no or too many players with playerId {} found, sending message aborted", userId);
            return null;
        }

        Player player = queryResult.iterator().next();

        return new PlayerDTO(player.getId(), userId, player.getOnline());
    }

    @RequestMapping(value = "/messaging/receive", method = RequestMethod.PUT)
    @ResponseBody
    public void receiveMessage(@RequestBody MessageDTO message) {
        log.info("received message {}", message);

        messageStore.addReceivedMessage(message.getReceiver().getId(), message);
    }

}