Events subsystem

16 files changed, 503 insertions, 10 deletions

diff --git a/database/changelog-3.6.xml b/database/changelog-3.6.xml
new file mode 100644
index 000000000..f61755f36
--- /dev/null
+++ b/database/changelog-3.6.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<databaseChangeLog
+  xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
+                      http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.4.xsd">
+
+  <changeSet author="author" id="changelog-3.6">
+
+    <createTable tableName="events">
+      <column name="id" type="INT" autoIncrement="true">
+        <constraints primaryKey="true" />
+      </column>
+      <column name="type" type="VARCHAR(128)">
+        <constraints nullable="false" />
+      </column>
+      <column name="eventtime" type="TIMESTAMP">
+        <constraints nullable="false" />
+      </column>
+      <column name="deviceid" type="INT" />
+      <column name="positionid" type="INT" />
+      <column name="attributes" type="VARCHAR(4096)">
+        <constraints nullable="false" />
+      </column>
+    </createTable>
+
+    <addForeignKeyConstraint baseTableName="events" baseColumnNames="deviceid" constraintName="fk_event_deviceid" referencedTableName="devices" referencedColumnNames="id" onDelete="CASCADE" />
+
+    <addColumn tableName="devices">
+      <column name="motion" type="VARCHAR(128)" />
+    </addColumn>
+
+  </changeSet>
+</databaseChangeLog>
diff --git a/database/changelog-master.xml b/database/changelog-master.xml
index 269a0da1a..399cd3c8d 100644
--- a/database/changelog-master.xml
+++ b/database/changelog-master.xml
@@ -7,4 +7,5 @@
 
   <include file="changelog-3.3.xml" relativeToChangelogFile="true" />
   <include file="changelog-3.5.xml" relativeToChangelogFile="true" />
+  <include file="changelog-3.6.xml" relativeToChangelogFile="true" />
 </databaseChangeLog>
diff --git a/setup/unix/traccar.xml b/setup/unix/traccar.xml
index 2ddf6551f..a27c9790b 100644
--- a/setup/unix/traccar.xml
+++ b/setup/unix/traccar.xml
@@ -17,6 +17,13 @@
     <entry key='logger.level'>all</entry>
     <entry key='logger.file'>/opt/traccar/logs/tracker-server.log</entry>
 
+    <entry key='event.suppressrepeated'>60</entry>
+
+    <entry key='event.overspeedhandler'>true</entry>
+    <entry key='event.globalspeedlimit'>90</entry>
+
+    <entry key='event.motionhandler'>true</entry>
+
     <!-- DATABASE CONFIG -->
 
     <entry key='database.driver'>org.h2.Driver</entry>
@@ -109,7 +116,7 @@
     </entry>
 
     <entry key='database.updateDeviceStatus'>
-        UPDATE devices SET status = :status, lastUpdate = :lastUpdate WHERE id = :id;
+        UPDATE devices SET status = :status, lastUpdate = :lastUpdate, motion = :motion WHERE id = :id;
     </entry>
 
     <entry key='database.deleteDevice'>
@@ -165,6 +172,23 @@
         UPDATE devices SET positionId = :id WHERE id = :deviceId;
     </entry>
 
+    <entry key='database.selectEvent'>
+        SELECT * FROM events WHERE id = :id;
+    </entry>
+
+    <entry key='database.insertEvent'>
+        INSERT INTO events (type, eventTime, deviceId, positionId, attributes)
+        VALUES (:type, :eventTime, :deviceId, :positionId, :attributes);
+    </entry>
+
+    <entry key='database.selectEvents'>
+        SELECT * FROM events WHERE deviceId = :deviceId AND type LIKE :type AND eventTime BETWEEN :from AND :to ORDER BY eventTime DESC;
+    </entry>
+
+    <entry key='database.selectLastEvents'>
+        SELECT * FROM events WHERE deviceId = :deviceId AND type LIKE :type AND eventTime >= NOW() - INTERVAL :interval SECOND ORDER BY eventTime DESC;
+    </entry>
+
     <!-- PROTOCOL CONFIG -->
 
     <entry key='gps103.port'>5001</entry>
diff --git a/setup/windows/traccar.xml b/setup/windows/traccar.xml
index bf1b216af..d60640375 100644
--- a/setup/windows/traccar.xml
+++ b/setup/windows/traccar.xml
@@ -17,6 +17,13 @@
     <entry key='logger.level'>all</entry>

     <entry key='logger.file'>[LOG]</entry>

 

+    <entry key='event.suppressrepeated'>60</entry>

+

+    <entry key='event.overspeedhandler'>true</entry>

+    <entry key='event.globalspeedlimit'>90</entry>

+

+    <entry key='event.motionhandler'>true</entry>

+

     <!-- DATABASE CONFIG -->

 

     <entry key='database.driver'>org.h2.Driver</entry>

@@ -109,7 +116,7 @@
     </entry>

 

     <entry key='database.updateDeviceStatus'>

-        UPDATE devices SET status = :status, lastUpdate = :lastUpdate WHERE id = :id;

+        UPDATE devices SET status = :status, lastUpdate = :lastUpdate, motion = :motion WHERE id = :id;

     </entry>

 

     <entry key='database.deleteDevice'>

@@ -165,6 +172,23 @@
         UPDATE devices SET positionId = :id WHERE id = :deviceId;

     </entry>

 

+    <entry key='database.selectEvent'>

+        SELECT * FROM events WHERE id = :id;

+    </entry>

+

+    <entry key='database.insertEvent'>

+        INSERT INTO events (type, eventTime, deviceId, positionId, attributes)

+        VALUES (:type, :eventTime, :deviceId, :positionId, :attributes);

+    </entry>

+

+    <entry key='database.selectEvents'>

+        SELECT * FROM events WHERE deviceId = :deviceId AND type LIKE :type AND eventTime BETWEEN :from AND :to ORDER BY eventTime DESC;

+    </entry>

+

+    <entry key='database.selectLastEvents'>

+        SELECT * FROM events WHERE deviceId = :deviceId AND type LIKE :type AND eventTime >= NOW() - INTERVAL :interval SECOND ORDER BY eventTime DESC;

+    </entry>

+

     <!-- PROTOCOL CONFIG -->

 

     <entry key='gps103.port'>5001</entry>

diff --git a/src/org/traccar/BaseEventHandler.java b/src/org/traccar/BaseEventHandler.java
new file mode 100644
index 000000000..3c2016af0
--- /dev/null
+++ b/src/org/traccar/BaseEventHandler.java
@@ -0,0 +1,31 @@
+package org.traccar;
+
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+public abstract class BaseEventHandler extends BaseDataHandler {
+
+    private boolean isLastPosition = false;
+
+    public boolean isLastPosition() {
+        return isLastPosition;
+    }
+
+    @Override
+    protected Position handlePosition(Position position) {
+
+        Position lastPosition = Context.getConnectionManager().getLastPosition(position.getDeviceId());
+        if (lastPosition == null || position.getFixTime().compareTo(lastPosition.getFixTime()) >= 0) {
+            isLastPosition = true;
+        }
+
+        Event event = analizePosition(position);
+        if (event != null) {
+            Context.getConnectionManager().updateEvent(event);
+        }
+        return position;
+    }
+
+    protected abstract Event analizePosition(Position position);
+
+}
diff --git a/src/org/traccar/BasePipelineFactory.java b/src/org/traccar/BasePipelineFactory.java
index 6e350f61d..55820deb7 100644
--- a/src/org/traccar/BasePipelineFactory.java
+++ b/src/org/traccar/BasePipelineFactory.java
@@ -29,6 +29,9 @@ import org.jboss.netty.channel.MessageEvent;
 import org.jboss.netty.channel.SimpleChannelHandler;
 import org.jboss.netty.handler.logging.LoggingHandler;
 import org.jboss.netty.handler.timeout.IdleStateHandler;
+import org.traccar.events.CommandResultEventHandler;
+import org.traccar.events.MotionEventHandler;
+import org.traccar.events.OverspeedEventHandler;
 import org.traccar.helper.Log;
 
 import java.net.InetSocketAddress;
@@ -44,6 +47,10 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
     private LocationProviderHandler locationProviderHandler;
     private HemisphereHandler hemisphereHandler;
 
+    private CommandResultEventHandler commandResultEventHandler;
+    private OverspeedEventHandler overspeedEventHandler;
+    private MotionEventHandler motionEventHandler;
+
     private static final class OpenChannelHandler extends SimpleChannelHandler {
 
         private final TrackerServer server;
@@ -122,6 +129,17 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
                 || Context.getConfig().hasKey("location.longitudeHemisphere")) {
             hemisphereHandler = new HemisphereHandler();
         }
+
+        commandResultEventHandler = new CommandResultEventHandler();
+
+        if (Context.getConfig().getBoolean("event.overspeedhandler")) {
+            overspeedEventHandler = new OverspeedEventHandler();
+        }
+
+        if (Context.getConfig().getBoolean("event.motionhandler")) {
+            motionEventHandler = new MotionEventHandler();
+        }
+
     }
 
     protected abstract void addSpecificHandlers(ChannelPipeline pipeline);
@@ -162,9 +180,23 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
         if (Context.getDataManager() != null) {
             pipeline.addLast("dataHandler", new DefaultDataHandler());
         }
+
         if (Context.getConfig().getBoolean("forward.enable")) {
             pipeline.addLast("webHandler", new WebDataHandler(Context.getConfig().getString("forward.url")));
         }
+
+        if (commandResultEventHandler != null) {
+            pipeline.addLast("CommandResultEventHandler", commandResultEventHandler);
+        }
+
+        if (overspeedEventHandler != null) {
+            pipeline.addLast("OverspeedEventHandler", overspeedEventHandler);
+        }
+
+        if (motionEventHandler != null) {
+            pipeline.addLast("MotionEventHandler", motionEventHandler);
+        }
+
         pipeline.addLast("mainHandler", new MainEventHandler());
         return pipeline;
     }
@@ -181,5 +213,4 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
             }
         }
     }
-
 }
diff --git a/src/org/traccar/api/AsyncSocket.java b/src/org/traccar/api/AsyncSocket.java
index 35e760613..2259f840f 100644
--- a/src/org/traccar/api/AsyncSocket.java
+++ b/src/org/traccar/api/AsyncSocket.java
@@ -20,6 +20,7 @@ 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.Event;
 import org.traccar.model.Position;
 import org.traccar.web.JsonConverter;
 
@@ -32,6 +33,7 @@ public class AsyncSocket extends WebSocketAdapter implements ConnectionManager.U
 
     private static final String KEY_DEVICES = "devices";
     private static final String KEY_POSITIONS = "positions";
+    private static final String KEY_EVENTS = "events";
 
     private long userId;
 
@@ -65,6 +67,11 @@ public class AsyncSocket extends WebSocketAdapter implements ConnectionManager.U
         sendData(KEY_POSITIONS, Collections.singletonList(position));
     }
 
+    @Override
+    public void onUpdateEvent(Event event) {
+        sendData(KEY_EVENTS, Collections.singletonList(event));
+    }
+
     private void sendData(String key, Collection<?> data) {
         if (!data.isEmpty() && isConnected()) {
             JsonObjectBuilder json = Json.createObjectBuilder();
diff --git a/src/org/traccar/api/resource/EventResource.java b/src/org/traccar/api/resource/EventResource.java
new file mode 100644
index 000000000..e0ad34728
--- /dev/null
+++ b/src/org/traccar/api/resource/EventResource.java
@@ -0,0 +1,39 @@
+package org.traccar.api.resource;
+
+import java.sql.SQLException;
+import java.util.Collection;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+
+import org.traccar.Context;
+import org.traccar.api.BaseResource;
+import org.traccar.model.Event;
+
+@Path("events")
+@Produces(MediaType.APPLICATION_JSON)
+@Consumes(MediaType.APPLICATION_JSON)
+
+public class EventResource extends BaseResource {
+
+    @Path("{id}")
+    @GET
+    public Event get(@PathParam("id") long id) throws SQLException {
+        Event event = Context.getDataManager().getEvent(id);
+        Context.getPermissionsManager().checkDevice(getUserId(), event.getDeviceId());
+        return event;
+    }
+
+    @GET
+    public Collection<Event> get(
+            @QueryParam("deviceId") long deviceId, @QueryParam("type") String type,
+            @QueryParam("interval") long interval) throws SQLException {
+        Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
+        return Context.getDataManager().getLastEvents(deviceId, type, interval);
+        }
+}
diff --git a/src/org/traccar/database/ConnectionManager.java b/src/org/traccar/database/ConnectionManager.java
index bb9958232..d6728357c 100644
--- a/src/org/traccar/database/ConnectionManager.java
+++ b/src/org/traccar/database/ConnectionManager.java
@@ -23,6 +23,7 @@ import org.traccar.GlobalTimer;
 import org.traccar.Protocol;
 import org.traccar.helper.Log;
 import org.traccar.model.Device;
+import org.traccar.model.Event;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
@@ -85,14 +86,26 @@ public class ConnectionManager {
             return;
         }
 
-        device.setStatus(status);
-        if (time != null) {
-            device.setLastUpdate(time);
+        if (status.equals(Device.STATUS_MOVING) || status.equals(Device.STATUS_STOPPED)) {
+            device.setMotion(status);
+        } else {
+            if (!status.equals(device.getStatus())) {
+                Event event = new Event(Event.DEVICE_OFFLINE, deviceId);
+                if (status.equals(Device.STATUS_ONLINE)) {
+                    event.setType(Event.DEVICE_ONLINE);
+                }
+                updateEvent(event);
+            }
+            device.setStatus(status);
+
+            Timeout timeout = timeouts.remove(deviceId);
+            if (timeout != null) {
+                timeout.cancel();
+            }
         }
 
-        Timeout timeout = timeouts.remove(deviceId);
-        if (timeout != null) {
-            timeout.cancel();
+        if (time != null) {
+            device.setLastUpdate(time);
         }
 
         if (status.equals(Device.STATUS_ONLINE)) {
@@ -134,6 +147,22 @@ public class ConnectionManager {
         }
     }
 
+    public synchronized void updateEvent(Event event) {
+        long deviceId = event.getDeviceId();
+        try {
+            Context.getDataManager().addEvent(event);
+        } catch (SQLException error) {
+            Log.warning(error);
+        }
+        for (long userId : Context.getPermissionsManager().getDeviceUsers(deviceId)) {
+            if (listeners.containsKey(userId)) {
+                for (UpdateListener listener : listeners.get(userId)) {
+                    listener.onUpdateEvent(event);
+                }
+            }
+        }
+    }
+
     public Position getLastPosition(long deviceId) {
         return positions.get(deviceId);
     }
@@ -154,6 +183,7 @@ public class ConnectionManager {
     public interface UpdateListener {
         void onUpdateDevice(Device device);
         void onUpdatePosition(Position position);
+        void onUpdateEvent(Event event);
     }
 
     public synchronized void addListener(long userId, UpdateListener listener) {
diff --git a/src/org/traccar/database/DataManager.java b/src/org/traccar/database/DataManager.java
index ac3be45ac..4e14f6c97 100644
--- a/src/org/traccar/database/DataManager.java
+++ b/src/org/traccar/database/DataManager.java
@@ -27,6 +27,7 @@ import org.traccar.Config;
 import org.traccar.Context;
 import org.traccar.helper.Log;
 import org.traccar.model.Device;
+import org.traccar.model.Event;
 import org.traccar.model.DevicePermission;
 import org.traccar.model.Group;
 import org.traccar.model.GroupPermission;
@@ -482,4 +483,34 @@ public class DataManager implements IdentityManager {
                 .setObject(server)
                 .executeUpdate();
     }
+
+    public Event getEvent(long eventId) throws SQLException {
+        return QueryBuilder.create(dataSource, getQuery("database.selectEvent"))
+                .setLong("id", eventId)
+                .executeQuerySingle(Event.class);
+    }
+
+    public void addEvent(Event event) throws SQLException {
+        event.setId(QueryBuilder.create(dataSource, getQuery("database.insertEvent"), true)
+                .setObject(event)
+                .executeUpdate());
+    }
+
+    public Collection<Event> getEvents(long deviceId, String type, Date from, Date to) throws SQLException {
+        return QueryBuilder.create(dataSource, getQuery("database.selectEvents"))
+                .setLong("deviceId", deviceId)
+                .setString("type", type)
+                .setDate("from", from)
+                .setDate("to", to)
+                .executeQuery(Event.class);
+    }
+
+    public Collection<Event> getLastEvents(long deviceId, String type, long interval) throws SQLException {
+        return QueryBuilder.create(dataSource, getQuery("database.selectLastEvents"))
+                .setLong("deviceId", deviceId)
+                .setString("type", type)
+                .setLong("interval", interval)
+                .executeQuery(Event.class);
+    }
+
 }
diff --git a/src/org/traccar/events/CommandResultEventHandler.java b/src/org/traccar/events/CommandResultEventHandler.java
new file mode 100644
index 000000000..8ef015841
--- /dev/null
+++ b/src/org/traccar/events/CommandResultEventHandler.java
@@ -0,0 +1,18 @@
+package org.traccar.events;
+
+import org.traccar.BaseEventHandler;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+public class CommandResultEventHandler extends BaseEventHandler {
+
+    @Override
+    protected Event analizePosition(Position position) {
+        Object cmdResult = position.getAttributes().get(Position.KEY_RESULT);
+        if (cmdResult != null) {
+            return new Event(Event.COMMAND_RESULT, position.getDeviceId(), position.getId());
+        }
+        return null;
+    }
+
+}
diff --git a/src/org/traccar/events/MotionEventHandler.java b/src/org/traccar/events/MotionEventHandler.java
new file mode 100644
index 000000000..d4dd12a39
--- /dev/null
+++ b/src/org/traccar/events/MotionEventHandler.java
@@ -0,0 +1,55 @@
+package org.traccar.events;
+
+import java.sql.SQLException;
+
+import org.traccar.BaseEventHandler;
+import org.traccar.Context;
+import org.traccar.helper.Log;
+import org.traccar.model.Device;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+public class MotionEventHandler extends BaseEventHandler {
+
+    private static final double SPEED_THRESHOLD  = 0.01;
+    private long suppressRepeated;
+
+    public MotionEventHandler() {
+        suppressRepeated = Context.getConfig().getLong("event.suppressrepeated", 60);
+    }
+
+    @Override
+    protected Event analizePosition(Position position) {
+        Event event = null;
+
+        if (!isLastPosition()) {
+            return event;
+        }
+
+        double speed = position.getSpeed();
+        boolean valid = position.getValid();
+        Device device = Context.getIdentityManager().getDeviceById(position.getDeviceId());
+        if (device == null) {
+            return event;
+        }
+        String motion = device.getMotion();
+        if (valid && speed > SPEED_THRESHOLD && !motion.equals(Device.STATUS_MOVING)) {
+            Context.getConnectionManager().updateDevice(position.getDeviceId(), Device.STATUS_MOVING, null);
+            event = new Event(Event.DEVICE_MOVING, position.getDeviceId(), position.getId());
+        } else if (valid && speed < SPEED_THRESHOLD && motion.equals(Device.STATUS_MOVING)) {
+            Context.getConnectionManager().updateDevice(position.getDeviceId(), Device.STATUS_STOPPED, null);
+            event = new Event(Event.DEVICE_STOPPED, position.getDeviceId(), position.getId());
+        }
+        try {
+            if (event != null && !Context.getDataManager().getLastEvents(
+                    position.getDeviceId(), event.getType(), suppressRepeated).isEmpty()) {
+                event = null;
+            }
+
+        } catch (SQLException error) {
+            Log.warning(error);
+        }
+        return event;
+    }
+
+}
diff --git a/src/org/traccar/events/OverspeedEventHandler.java b/src/org/traccar/events/OverspeedEventHandler.java
new file mode 100644
index 000000000..706e9b905
--- /dev/null
+++ b/src/org/traccar/events/OverspeedEventHandler.java
@@ -0,0 +1,79 @@
+package org.traccar.events;
+
+import java.sql.SQLException;
+
+import org.traccar.BaseEventHandler;
+import org.traccar.Context;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+import org.traccar.model.Server;
+import org.traccar.helper.Log;
+//import org.traccar.model.Device;
+//import org.traccar.model.Group;
+import org.traccar.helper.UnitsConverter;
+
+public class OverspeedEventHandler extends BaseEventHandler {
+
+    private double globalSpeedLimit;
+    private long suppressRepeated;
+
+    public OverspeedEventHandler() {
+        globalSpeedLimit = Context.getConfig().getInteger("event.globalspeedlimit", 0);
+        suppressRepeated = Context.getConfig().getLong("event.suppressrepeated", 60);
+        try {
+            Server server = Context.getDataManager().getServer();
+            String speedUnit = server.getSpeedUnit();
+            if (speedUnit != null) {
+                switch (speedUnit) {
+                    case "kmh" : globalSpeedLimit = UnitsConverter.knotsFromKph(globalSpeedLimit);
+                                break;
+                    case "mph" : globalSpeedLimit = UnitsConverter.knotsFromMph(globalSpeedLimit);
+                    default : break;
+                }
+            }
+        } catch (SQLException error) {
+            Log.warning(error);
+        }
+
+    }
+
+    @Override
+    protected Event analizePosition(Position position) {
+        Event event = null;
+        if (!isLastPosition()) {
+            return event;
+        }
+        double speed = position.getSpeed();
+        boolean valid = position.getValid();
+        double deviceSpeedLimit = 0;
+        double groupSpeedLimit = 0;
+//        Device device = Context.getIdentityManager().getDeviceById(position.getDeviceId());
+//        if (device != null) {
+//            deviceSpeedLimit = device.getSpeedLimit();
+//            try {
+//              Group group = Context.getDataManager().getGroupById(device.getGroupId());
+//              if (group != null) {
+//                  groupSpeedLimit = group.getSpeedLimit();
+//              }
+//            } catch (SQLException error) {
+//                Log.warning(error);
+//            }
+//        }
+
+        if (valid && globalSpeedLimit != 0 && speed > globalSpeedLimit
+           || valid && groupSpeedLimit != 0 && speed > groupSpeedLimit
+           || valid && deviceSpeedLimit != 0 && speed > deviceSpeedLimit) {
+            try {
+                if (Context.getDataManager().getLastEvents(
+                        position.getDeviceId(), Event.DEVICE_OVERSPEED, suppressRepeated).isEmpty()) {
+                    event = new Event(Event.DEVICE_OVERSPEED, position.getDeviceId(), position.getId());
+                }
+            } catch (SQLException error) {
+                Log.warning(error);
+            }
+
+        }
+        return event;
+    }
+
+}
diff --git a/src/org/traccar/model/Device.java b/src/org/traccar/model/Device.java
index 934e753b1..d32f9f851 100644
--- a/src/org/traccar/model/Device.java
+++ b/src/org/traccar/model/Device.java
@@ -101,4 +101,17 @@ public class Device {
         this.groupId = groupId;
     }
 
+    public static final String STATUS_MOVING = "moving";
+    public static final String STATUS_STOPPED = "stopped";
+
+    private String motion;
+
+    public String getMotion() {
+        return motion;
+    }
+
+    public void setMotion(String motion) {
+        this.motion = motion;
+    }
+
 }
diff --git a/src/org/traccar/model/Event.java b/src/org/traccar/model/Event.java
new file mode 100644
index 000000000..27c750c49
--- /dev/null
+++ b/src/org/traccar/model/Event.java
@@ -0,0 +1,74 @@
+package org.traccar.model;
+
+import java.util.Date;
+
+public class Event extends Message {
+
+    public Event(String type, long deviceId, long positionId) {
+        this.setType(type);
+        this.setDeviceId(deviceId);
+        this.setPositionId(positionId);
+        this.eventTime = new Date();
+    }
+
+    public Event(String type, long deviceId) {
+        this.setType(type);
+        this.setDeviceId(deviceId);
+        this.eventTime = new Date();
+    }
+
+    public Event() {
+    }
+
+    private long id;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public static final String COMMAND_RESULT = "command-result";
+
+    public static final String DEVICE_ONLINE = "device-online";
+    public static final String DEVICE_OFFLINE = "device-offline";
+
+    public static final String DEVICE_MOVING = "device-moving";
+    public static final String DEVICE_STOPPED = "device-stopped";
+
+    public static final String DEVICE_OVERSPEED = "device-overspeed";
+
+    public static final String GEOFENCE_ENTER = "geofence-enter";
+    public static final String GEOFENCE_EXIT = "geofence-exit";
+
+    private Date eventTime;
+
+    public Date getEventTime() {
+        if (eventTime != null) {
+            return new Date(eventTime.getTime());
+        } else {
+            return null;
+        }
+    }
+
+    public void setEventTime(Date eventTime) {
+        if (eventTime != null) {
+            this.eventTime = new Date(eventTime.getTime());
+        } else {
+            this.eventTime = null;
+        }
+    }
+
+    private long positionId;
+
+    public long getPositionId() {
+        return positionId;
+    }
+
+    public void setPositionId(long positionId) {
+        this.positionId = positionId;
+    }
+
+}
diff --git a/src/org/traccar/web/WebServer.java b/src/org/traccar/web/WebServer.java
index 8144af0b6..751db7a33 100644
--- a/src/org/traccar/web/WebServer.java
+++ b/src/org/traccar/web/WebServer.java
@@ -44,6 +44,7 @@ import org.traccar.api.resource.GroupResource;
 import org.traccar.api.resource.DeviceResource;
 import org.traccar.api.resource.PositionResource;
 import org.traccar.api.resource.CommandTypeResource;
+import org.traccar.api.resource.EventResource;
 import org.traccar.helper.Log;
 
 import javax.naming.InitialContext;
@@ -148,7 +149,8 @@ public class WebServer {
         resourceConfig.register(CorsResponseFilter.class);
         resourceConfig.registerClasses(ServerResource.class, SessionResource.class, CommandResource.class,
                 GroupPermissionResource.class, DevicePermissionResource.class, UserResource.class,
-                GroupResource.class, DeviceResource.class, PositionResource.class, CommandTypeResource.class);
+                GroupResource.class, DeviceResource.class, PositionResource.class,
+                CommandTypeResource.class, EventResource.class);
         servletHandler.addServlet(new ServletHolder(new ServletContainer(resourceConfig)), "/*");
 
         handlers.addHandler(servletHandler);