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/*
* Copyright 2020 - 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.schedule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.database.NotificationManager;
import org.traccar.model.Device;
import org.traccar.model.Event;
import org.traccar.model.Group;
import org.traccar.model.Position;
import org.traccar.storage.Storage;
import org.traccar.storage.StorageException;
import org.traccar.storage.query.Columns;
import org.traccar.storage.query.Request;
import javax.inject.Inject;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
public class TaskDeviceInactivityCheck implements ScheduleTask {
private static final Logger LOGGER = LoggerFactory.getLogger(TaskDeviceInactivityCheck.class);
public static final String ATTRIBUTE_DEVICE_INACTIVITY_START = "deviceInactivityStart";
public static final String ATTRIBUTE_DEVICE_INACTIVITY_PERIOD = "deviceInactivityPeriod";
public static final String ATTRIBUTE_LAST_UPDATE = "lastUpdate";
private static final long CHECK_PERIOD_MINUTES = 15;
private final Storage storage;
private final NotificationManager notificationManager;
@Inject
public TaskDeviceInactivityCheck(Storage storage, NotificationManager notificationManager) {
this.storage = storage;
this.notificationManager = notificationManager;
}
@Override
public void schedule(ScheduledExecutorService executor) {
executor.scheduleAtFixedRate(this, CHECK_PERIOD_MINUTES, CHECK_PERIOD_MINUTES, TimeUnit.MINUTES);
}
@Override
public void run() {
long currentTime = System.currentTimeMillis();
long checkPeriod = TimeUnit.MINUTES.toMillis(CHECK_PERIOD_MINUTES);
Map<Event, Position> events = new HashMap<>();
try {
Map<Long, Group> groups = storage.getObjects(Group.class, new Request(new Columns.All()))
.stream().collect(Collectors.toMap(Group::getId, group -> group));
for (Device device : storage.getObjects(Device.class, new Request(new Columns.All()))) {
if (device.getLastUpdate() != null && checkDevice(device, groups, currentTime, checkPeriod)) {
Event event = new Event(Event.TYPE_DEVICE_INACTIVE, device.getId());
event.set(ATTRIBUTE_LAST_UPDATE, device.getLastUpdate().getTime());
events.put(event, null);
}
}
} catch (StorageException e) {
LOGGER.warn("Database error", e);
}
notificationManager.updateEvents(events);
}
private long getAttribute(Device device, Map<Long, Group> groups, String key) {
long deviceValue = device.getLong(key);
if (deviceValue > 0) {
return deviceValue;
} else {
long groupId = device.getGroupId();
while (groupId > 0) {
Group group = groups.get(groupId);
if (group == null) {
return 0;
}
long groupValue = group.getLong(key);
if (groupValue > 0) {
return groupValue;
}
groupId = group.getGroupId();
}
return 0;
}
}
private boolean checkDevice(Device device, Map<Long, Group> groups, long currentTime, long checkPeriod) {
long deviceInactivityStart = getAttribute(device, groups, ATTRIBUTE_DEVICE_INACTIVITY_START);
if (deviceInactivityStart > 0) {
long timeThreshold = device.getLastUpdate().getTime() + deviceInactivityStart;
if (currentTime >= timeThreshold) {
if (currentTime - checkPeriod < timeThreshold) {
return true;
}
long deviceInactivityPeriod = getAttribute(device, groups, ATTRIBUTE_DEVICE_INACTIVITY_PERIOD);
if (deviceInactivityPeriod > 0) {
long count = (currentTime - timeThreshold - 1) / deviceInactivityPeriod;
timeThreshold += count * deviceInactivityPeriod;
return currentTime - checkPeriod < timeThreshold;
}
}
}
return false;
}
}
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