Implement DMT HTTP JSON protocol

2 files changed, 190 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/DmtHttpProtocol.java b/src/org/traccar/protocol/DmtHttpProtocol.java
new file mode 100644
index 000000000..da8f43bbd
--- /dev/null
+++ b/src/org/traccar/protocol/DmtHttpProtocol.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 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.bootstrap.ServerBootstrap;
+import org.jboss.netty.channel.ChannelPipeline;
+import org.jboss.netty.handler.codec.http.HttpRequestDecoder;
+import org.jboss.netty.handler.codec.http.HttpResponseEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.TrackerServer;
+
+import java.util.List;
+
+public class DmtHttpProtocol extends BaseProtocol {
+
+    public DmtHttpProtocol() {
+        super("dmthttp");
+    }
+
+    @Override
+    public void initTrackerServers(List<TrackerServer> serverList) {
+        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+            @Override
+            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+                pipeline.addLast("httpEncoder", new HttpResponseEncoder());
+                pipeline.addLast("httpDecoder", new HttpRequestDecoder());
+                pipeline.addLast("objectDecoder", new DmtHttpProtocolDecoder(DmtHttpProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/org/traccar/protocol/DmtHttpProtocolDecoder.java b/src/org/traccar/protocol/DmtHttpProtocolDecoder.java
new file mode 100644
index 000000000..4592bdd55
--- /dev/null
+++ b/src/org/traccar/protocol/DmtHttpProtocolDecoder.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright 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.channel.Channel;
+import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
+import org.jboss.netty.handler.codec.http.HttpHeaders;
+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.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import javax.json.Json;
+import javax.json.JsonArray;
+import javax.json.JsonObject;
+import java.io.StringReader;
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.TimeZone;
+
+public class DmtHttpProtocolDecoder extends BaseProtocolDecoder {
+
+    public DmtHttpProtocolDecoder(DmtHttpProtocol protocol) {
+        super(protocol);
+    }
+
+    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, 0);
+            channel.write(response);
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        HttpRequest request = (HttpRequest) msg;
+        JsonObject root = Json.createReader(
+                new StringReader(request.getContent().toString(StandardCharsets.US_ASCII))).readObject();
+
+        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, root.getString("IMEI"));
+        if (deviceSession == null) {
+            sendResponse(channel, HttpResponseStatus.BAD_REQUEST);
+            return null;
+        }
+
+        List<Position> positions = new LinkedList<>();
+
+        JsonArray records = root.getJsonArray("Records");
+
+        for (int i = 0; i < records.size(); i++) {
+            Position position = new Position();
+            position.setProtocol(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            JsonObject record = records.getJsonObject(i);
+
+            position.set(Position.KEY_INDEX, record.getInt("SeqNo"));
+            position.set(Position.KEY_EVENT, record.getInt("Reason"));
+
+            position.setDeviceTime(dateFormat.parse(record.getString("DateUTC")));
+
+            JsonArray fields = record.getJsonArray("Fields");
+
+            for (int j = 0; j < fields.size(); j++) {
+                JsonObject field = fields.getJsonObject(j);
+                switch (field.getInt("FType")) {
+                    case 0:
+                        position.setFixTime(dateFormat.parse(field.getString("GpsUTC")));
+                        position.setLatitude(field.getJsonNumber("Lat").doubleValue());
+                        position.setLatitude(field.getJsonNumber("Long").doubleValue());
+                        position.setAltitude(field.getInt("Alt"));
+                        position.setSpeed(UnitsConverter.knotsFromCps(field.getInt("Spd")));
+                        position.setCourse(field.getInt("Head"));
+                        position.setAccuracy(field.getInt("PosAcc"));
+                        position.setValid(field.getInt("GpsStat") > 0);
+                        break;
+                    case 2:
+                        int input = field.getInt("DIn");
+                        int output = field.getInt("DOut");
+
+                        position.set(Position.KEY_IGNITION, BitUtil.check(input, 0));
+
+                        position.set(Position.KEY_INPUT, input);
+                        position.set(Position.KEY_OUTPUT, output);
+                        position.set(Position.KEY_STATUS, field.getInt("DevStat"));
+                        break;
+                    case 6:
+                        JsonObject adc = field.getJsonObject("AnalogueData");
+                        if (adc.containsKey("1")) {
+                            position.set(Position.KEY_BATTERY, adc.getInt("1") * 0.001);
+                        }
+                        if (adc.containsKey("2")) {
+                            position.set(Position.KEY_POWER, adc.getInt("2") * 0.01);
+                        }
+                        if (adc.containsKey("3")) {
+                            position.set(Position.KEY_DEVICE_TEMP, adc.getInt("3") * 0.01);
+                        }
+                        if (adc.containsKey("4")) {
+                            position.set(Position.KEY_RSSI, adc.getInt("4"));
+                        }
+                        if (adc.containsKey("5")) {
+                            position.set("solarPower", adc.getInt("5") * 0.001);
+                        }
+                        break;
+                    default:
+                        break;
+                }
+            }
+
+            positions.add(position);
+        }
+
+        sendResponse(channel, HttpResponseStatus.OK);
+        return positions;
+    }
+
+}