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/*
* Copyright 2016 - 2022 Anton Tananaev (anton@traccar.org)
* Copyright 2018 Andrey Kunitsyn (andrey@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 java.util.Collections;
import java.util.Map;
import io.netty.channel.ChannelHandler;
import org.traccar.config.Config;
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.session.ConnectionManager;
import org.traccar.session.DeviceState;
import org.traccar.model.Event;
import org.traccar.model.Geofence;
import org.traccar.model.Position;
import org.traccar.session.cache.CacheManager;
import javax.inject.Inject;
@ChannelHandler.Sharable
public class OverspeedEventHandler extends BaseEventHandler {
public static final String ATTRIBUTE_SPEED = "speed";
private final ConnectionManager connectionManager;
private final CacheManager cacheManager;
private final long minimalDuration;
private final boolean preferLowest;
@Inject
public OverspeedEventHandler(Config config, ConnectionManager connectionManager, CacheManager cacheManager) {
this.connectionManager = connectionManager;
this.cacheManager = cacheManager;
minimalDuration = config.getLong(Keys.EVENT_OVERSPEED_MINIMAL_DURATION) * 1000;
preferLowest = config.getBoolean(Keys.EVENT_OVERSPEED_PREFER_LOWEST);
}
public Map<Event, Position> updateOverspeedState(
DeviceState deviceState, Position position, double speedLimit, long geofenceId) {
boolean oldState = deviceState.getOverspeedState();
if (oldState) {
boolean newState = position.getSpeed() > speedLimit;
if (newState) {
if (deviceState.getOverspeedTime() != null) {
long oldTime = deviceState.getOverspeedTime().getTime();
long newTime = position.getFixTime().getTime();
if (newTime - oldTime > minimalDuration) {
Event event = new Event(Event.TYPE_DEVICE_OVERSPEED, position);
event.set(ATTRIBUTE_SPEED, position.getSpeed());
event.set(Position.KEY_SPEED_LIMIT, speedLimit);
event.setGeofenceId(deviceState.getOverspeedGeofenceId());
deviceState.setOverspeedTime(null);
deviceState.setOverspeedGeofenceId(0);
return Collections.singletonMap(event, position);
}
}
} else {
deviceState.setOverspeedState(false);
deviceState.setOverspeedTime(null);
deviceState.setOverspeedGeofenceId(0);
}
} else if (position != null && position.getSpeed() > speedLimit) {
deviceState.setOverspeedState(true);
deviceState.setOverspeedTime(position.getFixTime());
deviceState.setOverspeedGeofenceId(geofenceId);
}
return null;
}
@Override
protected Map<Event, Position> analyzePosition(Position position) {
long deviceId = position.getDeviceId();
Device device = cacheManager.getObject(Device.class, position.getDeviceId());
if (device == null) {
return null;
}
if (!PositionUtil.isLatest(cacheManager, position) || !position.getValid()) {
return null;
}
double speedLimit = AttributeUtil.lookup(cacheManager, Keys.EVENT_OVERSPEED_LIMIT, deviceId);
double positionSpeedLimit = position.getDouble(Position.KEY_SPEED_LIMIT);
if (positionSpeedLimit > 0) {
speedLimit = positionSpeedLimit;
}
double geofenceSpeedLimit = 0;
long overspeedGeofenceId = 0;
if (device.getGeofenceIds() != null) {
for (long geofenceId : device.getGeofenceIds()) {
Geofence geofence = cacheManager.getObject(Geofence.class, geofenceId);
if (geofence != null) {
double currentSpeedLimit = geofence.getDouble(Keys.EVENT_OVERSPEED_LIMIT.getKey());
if (currentSpeedLimit > 0 && geofenceSpeedLimit == 0
|| preferLowest && currentSpeedLimit < geofenceSpeedLimit
|| !preferLowest && currentSpeedLimit > geofenceSpeedLimit) {
geofenceSpeedLimit = currentSpeedLimit;
overspeedGeofenceId = geofenceId;
}
}
}
}
if (geofenceSpeedLimit > 0) {
speedLimit = geofenceSpeedLimit;
}
if (speedLimit == 0) {
return null;
}
DeviceState deviceState = connectionManager.getDeviceState(deviceId);
var result = updateOverspeedState(deviceState, position, speedLimit, overspeedGeofenceId);
connectionManager.setDeviceState(deviceId, deviceState);
return result;
}
}
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