flespi integration: listening messages (rev.2)

1 files changed, 116 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/FlespiProtocolDecoder.java b/src/org/traccar/protocol/FlespiProtocolDecoder.java
new file mode 100644
index 000000000..a98529b19
--- /dev/null
+++ b/src/org/traccar/protocol/FlespiProtocolDecoder.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2013 - 2017 Anton Tananaev (anton@traccar.org)
+ *
+ * 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 org.traccar.protocol;
+
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
+import org.jboss.netty.handler.codec.http.HttpRequest;
+import org.jboss.netty.handler.codec.http.HttpResponse;
+import org.jboss.netty.handler.codec.http.HttpResponseStatus;
+import org.jboss.netty.handler.codec.http.HttpVersion;
+import org.jboss.netty.handler.codec.http.HttpHeaders;
+import org.jboss.netty.util.CharsetUtil;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.Log;
+import org.traccar.model.Position;
+
+import javax.json.Json;
+import javax.json.JsonArray;
+import javax.json.JsonNumber;
+import javax.json.JsonObject;
+import java.io.StringReader;
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.LinkedList;
+import java.util.Date;
+
+public class FlespiProtocolDecoder extends BaseProtocolDecoder {
+
+    public FlespiProtocolDecoder(FlespiProtocol protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        HttpRequest request = (HttpRequest) msg;
+        JsonArray result = Json.createReader(new StringReader(request.getContent().toString(StandardCharsets.UTF_8)))
+                .readArray();
+        List<Position> positions = new LinkedList<>();
+        Log.debug(String.format("messages received msgs_count=%d", result.size()));
+        for (int i = 0; i < result.size(); i++) {
+            JsonObject message = result.getJsonObject(i);
+            String ident = message.getString("ident");
+            if (ident == null) {
+                continue;
+            }
+            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, ident);
+            if (deviceSession == null) {
+                continue;
+            }
+            Position position = new Position();
+            position.setDeviceId(deviceSession.getDeviceId());
+            decodePosition(message, position);
+            positions.add(position);
+        }
+
+        sendResponse(channel, HttpResponseStatus.OK);
+        return positions;
+    }
+
+    private void sendResponse(Channel channel, HttpResponseStatus status) {
+        if (channel != null) {
+            HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, status);
+            response.headers().add(HttpHeaders.Names.CONTENT_LENGTH, 10);
+            response.setContent(ChannelBuffers.copiedBuffer("Hello namo", CharsetUtil.US_ASCII));
+            channel.write(response);
+        }
+    }
+
+    private void decodePosition(JsonObject msg, Position position) {
+        position.setProtocol("flespi");
+
+        position.setTime(new Date((long) msg.getJsonNumber("timestamp").doubleValue() * 1000));
+        JsonNumber lat = msg.getJsonNumber("position.latitude");
+        JsonNumber lon = msg.getJsonNumber("position.longitude");
+        position.setLatitude((lat != null && lon != null) ? lat.doubleValue() : 0);
+        position.setLongitude((lat != null && lon != null) ? lon.doubleValue() : 0);
+
+        JsonNumber speed = msg.getJsonNumber("position.speed");
+        position.setSpeed(speed != null ? speed.doubleValue() : 0);
+        if (position.getSpeed() == 111) {
+            position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
+        }
+
+        JsonNumber course = msg.getJsonNumber("position.direction");
+        position.setCourse(course != null ? course.doubleValue() : 0);
+
+        JsonNumber altitude = msg.getJsonNumber("position.altitude");
+        position.setAltitude(altitude != null ? altitude.doubleValue() : 0);
+
+        int satellites = msg.getInt("position.satellites", 0);
+        position.setValid(position.getLatitude() != 0 && position.getLongitude() != 0 && satellites >= 3);
+        position.set(Position.KEY_SATELLITES, satellites);
+
+        if (msg.getBoolean("alarm.event.trigger", false)) {
+            position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
+        }
+    }
+}