From 44d38a8f121304fc6504ebaabbfb0a402779ca1d Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Tue, 15 Dec 2015 14:24:35 +1300
Subject: Finish server side web sockets

---
 src/org/traccar/api/AsyncSocket.java        | 58 +++++++++++++++++++++++++----
 src/org/traccar/api/AsyncSocketServlet.java | 12 +++++-
 2 files changed, 62 insertions(+), 8 deletions(-)

(limited to 'src')

diff --git a/src/org/traccar/api/AsyncSocket.java b/src/org/traccar/api/AsyncSocket.java
index 8630b207d..fe20081d3 100644
--- a/src/org/traccar/api/AsyncSocket.java
+++ b/src/org/traccar/api/AsyncSocket.java
@@ -16,15 +16,59 @@
 package org.traccar.api;
 
 import org.eclipse.jetty.websocket.api.Session;
-import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
-import org.eclipse.jetty.websocket.api.annotations.WebSocket;
+import org.eclipse.jetty.websocket.api.WebSocketAdapter;
+import org.traccar.Context;
+import org.traccar.database.ConnectionManager;
+import org.traccar.model.Device;
+import org.traccar.model.Position;
+import org.traccar.web.JsonConverter;
 
-@WebSocket
-public class AsyncSocket {
+import javax.json.Json;
+import javax.json.JsonObjectBuilder;
+import java.util.Arrays;
+import java.util.Collection;
 
-    @OnWebSocketMessage
-    public void onWebSocketText(Session session, String message) {
-        session.getRemote().sendString(message, null);
+public class AsyncSocket extends WebSocketAdapter implements ConnectionManager.UpdateListener {
+
+    private static final String KEY_DEVICES = "devices";
+    private static final String KEY_POSITIONS = "positions";
+
+    private Collection<Long> devices;
+
+    public AsyncSocket(long userId) {
+        devices = Context.getPermissionsManager().allowedDevices(userId);
+    }
+
+    @Override
+    public void onWebSocketConnect(Session session) {
+        super.onWebSocketConnect(session);
+
+        sendData(KEY_POSITIONS, Context.getConnectionManager().getInitialState(devices));
+
+        Context.getConnectionManager().addListener(devices, this);
+    }
+
+    @Override
+    public void onWebSocketClose(int statusCode, String reason) {
+        super.onWebSocketClose(statusCode, reason);
+
+        Context.getConnectionManager().removeListener(devices, this);
+    }
+
+    @Override
+    public void onUpdateDevice(Device device) {
+        sendData(KEY_DEVICES, Arrays.asList(device));
+    }
+
+    @Override
+    public void onUpdatePosition(Position position) {
+        sendData(KEY_POSITIONS, Arrays.asList(position));
+    }
+
+    private void sendData(String key, Collection<?> data) {
+        JsonObjectBuilder json = Json.createObjectBuilder();
+        json.add(key, JsonConverter.arrayToJson(data));
+        getRemote().sendString(json.build().toString(), null);
     }
 
 }
diff --git a/src/org/traccar/api/AsyncSocketServlet.java b/src/org/traccar/api/AsyncSocketServlet.java
index 3b02bcfcd..59f0b7ee2 100644
--- a/src/org/traccar/api/AsyncSocketServlet.java
+++ b/src/org/traccar/api/AsyncSocketServlet.java
@@ -15,8 +15,12 @@
  */
 package org.traccar.api;
 
+import org.eclipse.jetty.websocket.servlet.ServletUpgradeRequest;
+import org.eclipse.jetty.websocket.servlet.ServletUpgradeResponse;
+import org.eclipse.jetty.websocket.servlet.WebSocketCreator;
 import org.eclipse.jetty.websocket.servlet.WebSocketServlet;
 import org.eclipse.jetty.websocket.servlet.WebSocketServletFactory;
+import org.traccar.api.resource.SessionResource;
 
 public class AsyncSocketServlet extends WebSocketServlet {
 
@@ -25,7 +29,13 @@ public class AsyncSocketServlet extends WebSocketServlet {
     @Override
     public void configure(WebSocketServletFactory factory) {
         factory.getPolicy().setIdleTimeout(ASYNC_TIMEOUT);
-        factory.register(AsyncSocket.class);
+        factory.setCreator(new WebSocketCreator() {
+            @Override
+            public Object createWebSocket(ServletUpgradeRequest req, ServletUpgradeResponse resp) {
+                long userId = (Long) req.getSession().getAttribute(SessionResource.USER_ID_KEY);
+                return new AsyncSocket(userId);
+            }
+        });
     }
 
 }
-- 
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