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/*
* Copyright 2016 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.events;
import java.util.Collection;
import java.util.Collections;
import org.traccar.BaseEventHandler;
import org.traccar.Context;
import org.traccar.model.Device;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class MotionEventHandler extends BaseEventHandler {
private double speedThreshold;
public MotionEventHandler() {
speedThreshold = Context.getConfig().getDouble("event.motion.speedThreshold", 0.01);
}
@Override
protected Collection<Event> analyzePosition(Position position) {
Device device = Context.getIdentityManager().getDeviceById(position.getDeviceId());
if (device == null) {
return null;
}
if (!Context.getIdentityManager().isLatestPosition(position) || !position.getValid()) {
return null;
}
double speed = position.getSpeed();
double oldSpeed = 0;
Position lastPosition = Context.getIdentityManager().getLastPosition(position.getDeviceId());
if (lastPosition != null) {
oldSpeed = lastPosition.getSpeed();
}
if (speed > speedThreshold && oldSpeed <= speedThreshold) {
return Collections.singleton(
new Event(Event.TYPE_DEVICE_MOVING, position.getDeviceId(), position.getId()));
} else if (speed <= speedThreshold && oldSpeed > speedThreshold) {
return Collections.singleton(
new Event(Event.TYPE_DEVICE_STOPPED, position.getDeviceId(), position.getId()));
}
return null;
}
}
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