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author | Anton Tananaev <anton.tananaev@gmail.com> | 2015-04-30 16:48:17 +1200 |
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committer | Anton Tananaev <anton.tananaev@gmail.com> | 2015-04-30 16:48:17 +1200 |
commit | fceecda9e32313916ab8695192c6e12bb59bd717 (patch) | |
tree | 8960cc3617b41dece440a8a8a390f422ab1b52ac /src/org/traccar/http/MainServlet.java | |
parent | 6c3367bc3fb2e60e9a9a48e419907a3e49ba07e6 (diff) | |
download | trackermap-server-fceecda9e32313916ab8695192c6e12bb59bd717.tar.gz trackermap-server-fceecda9e32313916ab8695192c6e12bb59bd717.tar.bz2 trackermap-server-fceecda9e32313916ab8695192c6e12bb59bd717.zip |
Separate async API servlet
Diffstat (limited to 'src/org/traccar/http/MainServlet.java')
-rw-r--r-- | src/org/traccar/http/MainServlet.java | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/src/org/traccar/http/MainServlet.java b/src/org/traccar/http/MainServlet.java index 4dc02e81f..2ba97ed57 100644 --- a/src/org/traccar/http/MainServlet.java +++ b/src/org/traccar/http/MainServlet.java @@ -42,8 +42,6 @@ public class MainServlet extends HttpServlet { public static final String USER_ID = "userId"; - private static final long ASYNC_TIMEOUT = 120000; - @Override protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { @@ -51,8 +49,6 @@ public class MainServlet extends HttpServlet { if (command == null) { resp.sendError(HttpServletResponse.SC_BAD_REQUEST); - } else if (command.equals("/async")) { - async(req.startAsync()); } else if (command.equals("/session")) { session(req, resp); } else if (command.equals("/login")) { @@ -63,155 +59,6 @@ public class MainServlet extends HttpServlet { resp.sendError(HttpServletResponse.SC_BAD_REQUEST); } } - - public class AsyncSession { - - private static final boolean DEBUG_ASYNC = true; - - private static final long SESSION_TIMEOUT = 30; - private static final long REQUEST_TIMEOUT = 30; - - private boolean destroyed; - private final long userId; - private final Collection<Long> devices; - private Timeout sessionTimeout; - private Timeout requestTimeout; - private final Map<Long, Position> positions = new HashMap<Long, Position>(); - private AsyncContext activeContext; - - private void logEvent(String message) { - if (DEBUG_ASYNC) { - Log.debug("AsyncSession: " + this.hashCode() + " destroyed: " + destroyed + " " + message); - } - } - - public AsyncSession(long userId, Collection<Long> devices) { - logEvent("create userId: " + userId + " devices: " + devices.size()); - this.userId = userId; - this.devices = devices; - - Collection<Position> initialPositions = Context.getDataCache().getInitialState(devices); - for (Position position : initialPositions) { - positions.put(position.getDeviceId(), position); - } - - Context.getDataCache().addListener(devices, dataListener); - } - - @Override - protected void finalize() throws Throwable { - logEvent("finalize"); - } - - private final DataCache.DataCacheListener dataListener = new DataCache.DataCacheListener() { - @Override - public void onUpdate(Position position) { - synchronized (AsyncSession.this) { - logEvent("onUpdate deviceId: " + position.getDeviceId()); - if (!destroyed) { - if (requestTimeout != null) { - requestTimeout.cancel(); - requestTimeout = null; - } - positions.put(position.getDeviceId(), position); - if (activeContext != null) { - response(); - } - } - } - } - }; - - private final TimerTask sessionTimer = new TimerTask() { - @Override - public void run(Timeout tmt) throws Exception { - synchronized (AsyncSession.this) { - logEvent("sessionTimeout"); - Context.getDataCache().removeListener(devices, dataListener); - synchronized (asyncSessions) { - asyncSessions.remove(userId); - } - destroyed = true; - } - } - }; - - private final TimerTask requestTimer = new TimerTask() { - @Override - public void run(Timeout tmt) throws Exception { - synchronized (AsyncSession.this) { - logEvent("requestTimeout"); - if (!destroyed) { - if (activeContext != null) { - response(); - } - } - } - } - }; - - public synchronized void request(AsyncContext context) { - logEvent("request context: " + context.hashCode()); - if (!destroyed) { - activeContext = context; - if (sessionTimeout != null) { - sessionTimeout.cancel(); - sessionTimeout = null; - } - - if (!positions.isEmpty()) { - response(); - } else { - requestTimeout = GlobalTimer.getTimer().newTimeout( - requestTimer, REQUEST_TIMEOUT, TimeUnit.SECONDS); - } - } - } - - private synchronized void response() { - logEvent("response context: " + activeContext.hashCode()); - if (!destroyed) { - ServletResponse response = activeContext.getResponse(); - - JsonObjectBuilder result = Json.createObjectBuilder(); - result.add("success", true); - result.add("data", ObjectConverter.arrayToJson(positions.values())); - positions.clear(); - - try { - response.getWriter().println(result.build().toString()); - } catch (IOException error) { - Log.warning(error); - } - - activeContext.complete(); - activeContext = null; - - sessionTimeout = GlobalTimer.getTimer().newTimeout( - sessionTimer, SESSION_TIMEOUT, TimeUnit.SECONDS); - } - } - - } - - private final Map<Long, AsyncSession> asyncSessions = new HashMap<Long, AsyncSession>(); - - private void async(final AsyncContext context) { - - context.setTimeout(60000); - HttpServletRequest req = (HttpServletRequest) context.getRequest(); - long userId = (Long) req.getSession().getAttribute(USER_ID); - - synchronized (asyncSessions) { - - if (!asyncSessions.containsKey(userId)) { - Collection<Long> devices = Context.getPermissionsManager().allowedDevices(userId); - asyncSessions.put(userId, new AsyncSession(userId, devices)); - } - - asyncSessions.get(userId).request(context); - } - } private void session(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.getWriter().println("{ success: true, session: " + (req.getSession().getAttribute(USER_ID) != null) + " }"); |