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/*
* Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.database;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.traccar.Context;
import org.traccar.helper.Log;
import org.traccar.model.Device;
import org.traccar.model.Geofence;
import org.traccar.model.GroupGeofence;
import org.traccar.model.Position;
import org.traccar.model.DeviceGeofence;
import org.traccar.model.GeofencePermission;
public class GeofenceManager {
private final DataManager dataManager;
private final Map<Long, Geofence> geofences = new HashMap<>();
private final Map<Long, Set<Long>> userGeofences = new HashMap<>();
private final Map<Long, Set<Long>> groupGeofences = new HashMap<>();
private final Map<Long, Set<Long>> deviceGeofencesWithGroups = new HashMap<>();
private final Map<Long, Set<Long>> deviceGeofences = new HashMap<>();
private final ReadWriteLock deviceGeofencesLock = new ReentrantReadWriteLock();
private final ReadWriteLock geofencesLock = new ReentrantReadWriteLock();
private final ReadWriteLock groupGeofencesLock = new ReentrantReadWriteLock();
public GeofenceManager(DataManager dataManager) {
this.dataManager = dataManager;
refresh();
}
public Set<Long> getUserGeofencesIds(long userId) {
if (!userGeofences.containsKey(userId)) {
userGeofences.put(userId, new HashSet<Long>());
}
return userGeofences.get(userId);
}
private Set<Long> getGroupGeofences(long groupId) {
if (!groupGeofences.containsKey(groupId)) {
groupGeofences.put(groupId, new HashSet<Long>());
}
return groupGeofences.get(groupId);
}
public Set<Long> getAllDeviceGeofences(long deviceId) {
deviceGeofencesLock.readLock().lock();
try {
return getDeviceGeofences(deviceGeofencesWithGroups, deviceId);
} finally {
deviceGeofencesLock.readLock().unlock();
}
}
public Set<Long> getDeviceGeofences(long deviceId) {
deviceGeofencesLock.readLock().lock();
try {
return getDeviceGeofences(deviceGeofences, deviceId);
} finally {
deviceGeofencesLock.readLock().unlock();
}
}
private Set<Long> getDeviceGeofences(Map<Long, Set<Long>> deviceGeofences, long deviceId) {
if (!deviceGeofences.containsKey(deviceId)) {
deviceGeofences.put(deviceId, new HashSet<Long>());
}
return deviceGeofences.get(deviceId);
}
public final void refresh() {
if (dataManager != null) {
try {
geofencesLock.writeLock().lock();
groupGeofencesLock.writeLock().lock();
deviceGeofencesLock.writeLock().lock();
try {
geofences.clear();
for (Geofence geofence : dataManager.getGeofences()) {
geofences.put(geofence.getId(), geofence);
}
userGeofences.clear();
for (GeofencePermission geofencePermission : dataManager.getGeofencePermissions()) {
getUserGeofencesIds(geofencePermission.getUserId()).add(geofencePermission.getGeofenceId());
}
groupGeofences.clear();
for (GroupGeofence groupGeofence : dataManager.getGroupGeofences()) {
getGroupGeofences(groupGeofence.getGroupId()).add(groupGeofence.getGeofenceId());
}
deviceGeofences.clear();
deviceGeofencesWithGroups.clear();
for (DeviceGeofence deviceGeofence : dataManager.getDeviceGeofences()) {
getDeviceGeofences(deviceGeofences, deviceGeofence.getDeviceId())
.add(deviceGeofence.getGeofenceId());
getDeviceGeofences(deviceGeofencesWithGroups, deviceGeofence.getDeviceId())
.add(deviceGeofence.getGeofenceId());
}
for (Device device : dataManager.getAllDevicesCached()) {
long groupId = device.getGroupId();
while (groupId != 0) {
getDeviceGeofences(deviceGeofencesWithGroups,
device.getId()).addAll(getGroupGeofences(groupId));
groupId = dataManager.getGroupById(groupId).getGroupId();
}
List<Long> deviceGeofenceIds = device.getGeofenceIds();
if (deviceGeofenceIds == null) {
deviceGeofenceIds = new ArrayList<Long>();
} else {
deviceGeofenceIds.clear();
}
Position lastPosition = Context.getConnectionManager().getLastPosition(device.getId());
if (lastPosition != null) {
for (Long geofenceId : deviceGeofencesWithGroups.get(device.getId())) {
if (getGeofence(geofenceId).getGeometry()
.containsPoint(lastPosition.getLatitude(), lastPosition.getLongitude())) {
deviceGeofenceIds.add(geofenceId);
}
}
}
device.setGeofenceIds(deviceGeofenceIds);
}
} finally {
geofencesLock.writeLock().unlock();
groupGeofencesLock.writeLock().unlock();
deviceGeofencesLock.writeLock().unlock();
}
} catch (SQLException error) {
Log.warning(error);
}
}
}
public final Collection<Geofence> getAllGeofences() {
geofencesLock.readLock().lock();
try {
return geofences.values();
} finally {
geofencesLock.readLock().unlock();
}
}
public final Collection<Geofence> getUserGeofences(long userId) {
geofencesLock.readLock().lock();
try {
Collection<Geofence> result = new LinkedList<>();
for (Long geofenceId : getUserGeofencesIds(userId)) {
result.add(getGeofence(geofenceId));
}
return result;
} finally {
geofencesLock.readLock().unlock();
}
}
public final Geofence getGeofence(Long geofenceId) {
geofencesLock.readLock().lock();
try {
return geofences.get(geofenceId);
} finally {
geofencesLock.readLock().unlock();
}
}
public final void updateGeofence(Geofence geofence) {
geofencesLock.writeLock().lock();
try {
geofences.put(geofence.getId(), geofence);
} finally {
geofencesLock.writeLock().unlock();
}
try {
dataManager.updateGeofence(geofence);
} catch (SQLException error) {
Log.warning(error);
}
}
public boolean checkGeofence(long userId, long geofenceId) {
return getUserGeofencesIds(userId).contains(geofenceId);
}
public List<Long> getCurrentDeviceGeofences(Position position) {
List<Long> result = new ArrayList<Long>();
for (Long geofenceId : getAllDeviceGeofences(position.getDeviceId())) {
if (getGeofence(geofenceId).getGeometry().containsPoint(position.getLatitude(), position.getLongitude())) {
result.add(geofenceId);
}
}
return result;
}
}
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