Created
September 5, 2014 06:26
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package place; | |
import java.io.IOException; | |
import java.util.ArrayList; | |
import java.util.List; | |
import java.util.logging.Logger; | |
import javax.jdo.PersistenceManager; | |
import javax.jdo.annotations.Transactional; | |
import javax.servlet.http.*; | |
import com.google.gson.Gson; | |
import engine.PMF; | |
import engine.PlacerServlet; | |
import engine.ServerError; | |
// Сервлет стрима | |
@SuppressWarnings("serial") | |
public class StreamServlet extends PlacerServlet { | |
//Создаем объект логгер | |
private static final Logger log = Logger.getLogger(StreamServlet.class.getName()); | |
@Transactional | |
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException { | |
// Ловим исключение долгой работы сервлета ( > 30 секунд) | |
try { | |
final long timeStart = System.currentTimeMillis(); | |
long timeCurrent = 0; | |
// Принимаем URL параметры | |
String latStr = req.getParameter("latitude"); | |
String lonStr = req.getParameter("longitude"); | |
String offset = req.getParameter("offset"); | |
timeCurrent = System.currentTimeMillis() - timeStart; | |
log.info("Start:" + timeCurrent); | |
// Проверяем на ошибку 101 | |
List<String> paramsError = new ArrayList<String>(); | |
boolean error101Flag = false; | |
if(latStr == null || latStr.isEmpty() ){ | |
paramsError.add("latitude"); | |
error101Flag = true; | |
} | |
if(lonStr == null || lonStr.isEmpty() ){ | |
paramsError.add("longitude"); | |
error101Flag = true; | |
} | |
if(offset == null || offset.isEmpty() ){ | |
paramsError.add("offset"); | |
error101Flag = true; | |
} | |
if(error101Flag){ | |
ServerError error101 = new ServerError(101, paramsError); | |
resp.getWriter().println(makeError(new Gson().toJson(error101))); | |
return; | |
} | |
timeCurrent = System.currentTimeMillis() - timeStart; | |
log.info("NearbyBegin:" + timeCurrent); | |
// Открываем PM | |
PersistenceManager pm = PMF.get().getPersistenceManager(); | |
// Получаем места "рядом" | |
List<Place> resultNearby = PlaceHelper.getNearbyPlaces(Double.valueOf(latStr),Double.valueOf(lonStr),Integer.valueOf(offset)); | |
timeCurrent = System.currentTimeMillis()- timeStart; | |
log.info("NearbyReady:" + timeCurrent); | |
// Создаем объект сессии, достаем от туда переменную login, если сессии нет то логин = null | |
HttpSession placerSession = req.getSession(false); | |
String sessionLogin = placerSession != null ? (String)placerSession.getAttribute("login"): null; | |
timeCurrent = System.currentTimeMillis() - timeStart; | |
log.info("getPlaces:" + timeCurrent); | |
// Если места рядом найдены, то подгатавливаем к выдачи места, иначе результат - пустой массив | |
List<Place> resultPlaces = new ArrayList<Place>(); | |
if (resultNearby != null) { | |
resultPlaces = PlaceHelper.preparePlacesForClient(resultNearby, sessionLogin, pm); | |
} | |
// if (!resultPlaces.isEmpty()) { | |
// // Удаляем забаненые места | |
// resultPlaces = PlaceHelper.removeBannedPlaces(resultPlaces,sessionLogin); | |
// } | |
pm.close(); | |
timeCurrent = System.currentTimeMillis() - timeStart; | |
log.info("resultPlaces:" + timeCurrent); | |
// Выводим ответ | |
resp.setContentType("text/plain"); | |
resp.setCharacterEncoding("UTF8"); | |
timeCurrent = System.currentTimeMillis() - timeStart; | |
log.info("encode:" + timeCurrent); | |
resp.getWriter().println(makeDoneArrayResponse(new Gson().toJson(resultPlaces))); | |
timeCurrent = System.currentTimeMillis() - timeStart; | |
log.info("finaltime:" + timeCurrent); | |
} catch (com.google.apphosting.api.DeadlineExceededException deadlineExceededException) { | |
// Пишем в лог ошибку DeadlineExceededException + логин юзера-инициатора ошибки | |
log.severe("DeadlineExceededException:" + getLoginFromRequest(req)); | |
} | |
} | |
} |
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