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Diffstat (limited to 'src/org/traccar/handler/events/FuelDropEventHandler.java')
-rw-r--r--src/org/traccar/handler/events/FuelDropEventHandler.java65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/org/traccar/handler/events/FuelDropEventHandler.java b/src/org/traccar/handler/events/FuelDropEventHandler.java
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+++ b/src/org/traccar/handler/events/FuelDropEventHandler.java
@@ -0,0 +1,65 @@
+/*
+ * 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.handler.events;
+
+import io.netty.channel.ChannelHandler;
+import org.traccar.BaseEventHandler;
+import org.traccar.Context;
+import org.traccar.model.Device;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+import java.util.Collections;
+import java.util.Map;
+
+@ChannelHandler.Sharable
+public class FuelDropEventHandler extends BaseEventHandler {
+
+ public static final String ATTRIBUTE_FUEL_DROP_THRESHOLD = "fuelDropThreshold";
+
+ @Override
+ protected Map<Event, Position> analyzePosition(Position position) {
+
+ Device device = Context.getIdentityManager().getById(position.getDeviceId());
+ if (device == null) {
+ return null;
+ }
+ if (!Context.getIdentityManager().isLatestPosition(position)) {
+ return null;
+ }
+
+ double fuelDropThreshold = Context.getDeviceManager()
+ .lookupAttributeDouble(device.getId(), ATTRIBUTE_FUEL_DROP_THRESHOLD, 0, false);
+
+ if (fuelDropThreshold > 0) {
+ Position lastPosition = Context.getIdentityManager().getLastPosition(position.getDeviceId());
+ if (position.getAttributes().containsKey(Position.KEY_FUEL_LEVEL)
+ && lastPosition != null && lastPosition.getAttributes().containsKey(Position.KEY_FUEL_LEVEL)) {
+
+ double drop = lastPosition.getDouble(Position.KEY_FUEL_LEVEL)
+ - position.getDouble(Position.KEY_FUEL_LEVEL);
+ if (drop >= fuelDropThreshold) {
+ Event event = new Event(Event.TYPE_DEVICE_FUEL_DROP, position.getDeviceId(), position.getId());
+ event.set(ATTRIBUTE_FUEL_DROP_THRESHOLD, fuelDropThreshold);
+ return Collections.singletonMap(event, position);
+ }
+ }
+ }
+
+ return null;
+ }
+
+}