Refactor fuel drop manager

4 files changed, 22 insertions, 9 deletions

diff --git a/src/org/traccar/BasePipelineFactory.java b/src/org/traccar/BasePipelineFactory.java
index 0187e1d3f..5cadfb2a6 100644
--- a/src/org/traccar/BasePipelineFactory.java
+++ b/src/org/traccar/BasePipelineFactory.java
@@ -58,7 +58,6 @@ public abstract class BasePipelineFactory extends ChannelInitializer<Channel> {
     private boolean eventsEnabled;
     private int timeout;
 
-    private FuelDropEventHandler fuelDropEventHandler;
     private MotionEventHandler motionEventHandler;
     private GeofenceEventHandler geofenceEventHandler;
     private AlertEventHandler alertEventHandler;
@@ -75,7 +74,6 @@ public abstract class BasePipelineFactory extends ChannelInitializer<Channel> {
         }
 
         if (eventsEnabled) {
-            fuelDropEventHandler = new FuelDropEventHandler();
             motionEventHandler = Context.getMotionEventHandler();
             geofenceEventHandler = new GeofenceEventHandler();
             alertEventHandler = new AlertEventHandler();
@@ -160,7 +158,7 @@ public abstract class BasePipelineFactory extends ChannelInitializer<Channel> {
                     pipeline,
                     Main.getInjector().getInstance(CommandResultEventHandler.class),
                     Main.getInjector().getInstance(OverspeedEventHandler.class),
-                    fuelDropEventHandler,
+                    Main.getInjector().getInstance(FuelDropEventHandler.class),
                     motionEventHandler,
                     geofenceEventHandler,
                     alertEventHandler,
diff --git a/src/org/traccar/MainModule.java b/src/org/traccar/MainModule.java
index fe280d7a3..46af5670c 100644
--- a/src/org/traccar/MainModule.java
+++ b/src/org/traccar/MainModule.java
@@ -57,6 +57,7 @@ import org.traccar.handler.HemisphereHandler;
 import org.traccar.handler.MotionHandler;
 import org.traccar.handler.RemoteAddressHandler;
 import org.traccar.handler.events.CommandResultEventHandler;
+import org.traccar.handler.events.FuelDropEventHandler;
 import org.traccar.handler.events.OverspeedEventHandler;
 import org.traccar.reports.model.TripsConfig;
 
@@ -291,6 +292,12 @@ public class MainModule extends AbstractModule {
         return new OverspeedEventHandler(config, deviceManager, geofenceManager);
     }
 
+    @Singleton
+    @Provides
+    public static FuelDropEventHandler provideFuelDropEventHandler(IdentityManager identityManager) {
+        return new FuelDropEventHandler(identityManager);
+    }
+
     @Override
     protected void configure() {
         binder().requireExplicitBindings();
diff --git a/src/org/traccar/database/IdentityManager.java b/src/org/traccar/database/IdentityManager.java
index 59d2f9362..6228a0f75 100644
--- a/src/org/traccar/database/IdentityManager.java
+++ b/src/org/traccar/database/IdentityManager.java
@@ -38,4 +38,6 @@ public interface IdentityManager {
 
     long lookupAttributeLong(long deviceId, String attributeName, long defaultValue, boolean lookupConfig);
 
+    double lookupAttributeDouble(long deviceId, String attributeName, double defaultValue, boolean lookupConfig);
+
 }
diff --git a/src/org/traccar/handler/events/FuelDropEventHandler.java b/src/org/traccar/handler/events/FuelDropEventHandler.java
index f13b8c7bb..59de61bba 100644
--- a/src/org/traccar/handler/events/FuelDropEventHandler.java
+++ b/src/org/traccar/handler/events/FuelDropEventHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2019 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.
@@ -16,7 +16,7 @@
 package org.traccar.handler.events;
 
 import io.netty.channel.ChannelHandler;
-import org.traccar.Context;
+import org.traccar.database.IdentityManager;
 import org.traccar.model.Device;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
@@ -29,22 +29,28 @@ public class FuelDropEventHandler extends BaseEventHandler {
 
     public static final String ATTRIBUTE_FUEL_DROP_THRESHOLD = "fuelDropThreshold";
 
+    private final IdentityManager identityManager;
+
+    public FuelDropEventHandler(IdentityManager identityManager) {
+        this.identityManager = identityManager;
+    }
+
     @Override
     protected Map<Event, Position> analyzePosition(Position position) {
 
-        Device device = Context.getIdentityManager().getById(position.getDeviceId());
+        Device device = identityManager.getById(position.getDeviceId());
         if (device == null) {
             return null;
         }
-        if (!Context.getIdentityManager().isLatestPosition(position)) {
+        if (!identityManager.isLatestPosition(position)) {
             return null;
         }
 
-        double fuelDropThreshold = Context.getDeviceManager()
+        double fuelDropThreshold = identityManager
                 .lookupAttributeDouble(device.getId(), ATTRIBUTE_FUEL_DROP_THRESHOLD, 0, false);
 
         if (fuelDropThreshold > 0) {
-            Position lastPosition = Context.getIdentityManager().getLastPosition(position.getDeviceId());
+            Position lastPosition = identityManager.getLastPosition(position.getDeviceId());
             if (position.getAttributes().containsKey(Position.KEY_FUEL_LEVEL)
                     && lastPosition != null && lastPosition.getAttributes().containsKey(Position.KEY_FUEL_LEVEL)) {