diff options
Diffstat (limited to 'src/main/java/org/traccar/handler/events/FuelEventHandler.java')
-rw-r--r-- | src/main/java/org/traccar/handler/events/FuelEventHandler.java | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/handler/events/FuelEventHandler.java b/src/main/java/org/traccar/handler/events/FuelEventHandler.java new file mode 100644 index 000000000..e5085ecc2 --- /dev/null +++ b/src/main/java/org/traccar/handler/events/FuelEventHandler.java @@ -0,0 +1,79 @@ +/* + * Copyright 2017 - 2023 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.config.Keys; +import org.traccar.helper.model.AttributeUtil; +import org.traccar.helper.model.PositionUtil; +import org.traccar.model.Device; +import org.traccar.model.Event; +import org.traccar.model.Position; +import org.traccar.session.cache.CacheManager; + +import jakarta.inject.Inject; +import jakarta.inject.Singleton; +import java.util.Map; + +@Singleton +@ChannelHandler.Sharable +public class FuelEventHandler extends BaseEventHandler { + + private final CacheManager cacheManager; + + @Inject + public FuelEventHandler(CacheManager cacheManager) { + this.cacheManager = cacheManager; + } + + @Override + protected Map<Event, Position> analyzePosition(Position position) { + + Device device = cacheManager.getObject(Device.class, position.getDeviceId()); + if (device == null) { + return null; + } + if (!PositionUtil.isLatest(cacheManager, position)) { + return null; + } + + if (position.hasAttribute(Position.KEY_FUEL_LEVEL)) { + Position lastPosition = cacheManager.getPosition(position.getDeviceId()); + if (lastPosition != null && lastPosition.hasAttribute(Position.KEY_FUEL_LEVEL)) { + double before = lastPosition.getDouble(Position.KEY_FUEL_LEVEL); + double after = position.getDouble(Position.KEY_FUEL_LEVEL); + double change = after - before; + + if (change > 0) { + double threshold = AttributeUtil.lookup( + cacheManager, Keys.EVENT_FUEL_INCREASE_THRESHOLD, position.getDeviceId()); + if (threshold > 0 && change >= threshold) { + return Map.of(new Event(Event.TYPE_DEVICE_FUEL_INCREASE, position), position); + } + } else if (change < 0) { + double threshold = AttributeUtil.lookup( + cacheManager, Keys.EVENT_FUEL_DROP_THRESHOLD, position.getDeviceId()); + if (threshold > 0 && Math.abs(change) >= threshold) { + return Map.of(new Event(Event.TYPE_DEVICE_FUEL_DROP, position), position); + } + } + } + } + + return null; + } + +} |