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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.database;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.sql.SQLException;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
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.Event;
import org.traccar.model.Notification;
import org.traccar.model.Position;
import org.traccar.notification.NotificationMail;
public class NotificationManager {
private final DataManager dataManager;
private final Map<Long, Set<Notification>> userNotifications = new HashMap<>();
private final ReadWriteLock notificationsLock = new ReentrantReadWriteLock();
public NotificationManager(DataManager dataManager) {
this.dataManager = dataManager;
refresh();
}
public void updateEvent(Event event, Position position) {
try {
dataManager.addEvent(event);
} catch (SQLException error) {
Log.warning(error);
}
Set<Long> users = Context.getPermissionsManager().getDeviceUsers(event.getDeviceId());
for (long userId : users) {
if (event.getGeofenceId() == 0 || Context.getGeofenceManager() != null
&& Context.getGeofenceManager().checkGeofence(userId, event.getGeofenceId())) {
Notification notification = getUserNotificationByType(userId, event.getType());
if (notification != null) {
if (notification.getWeb()) {
Context.getConnectionManager().updateEvent(userId, event, position);
}
if (notification.getMail()) {
NotificationMail.sendMailAsync(userId, event, position);
}
}
}
}
if (Context.getEventForwarder() != null) {
Context.getEventForwarder().forwardEvent(event, position);
}
}
public void updateEvents(Collection<Event> events, Position position) {
for (Event event : events) {
updateEvent(event, position);
}
}
private Set<Notification> getUserNotificationsUnsafe(long userId) {
if (!userNotifications.containsKey(userId)) {
userNotifications.put(userId, new HashSet<Notification>());
}
return userNotifications.get(userId);
}
public Set<Notification> getUserNotifications(long userId) {
notificationsLock.readLock().lock();
try {
return getUserNotificationsUnsafe(userId);
} finally {
notificationsLock.readLock().unlock();
}
}
public final void refresh() {
if (dataManager != null) {
try {
notificationsLock.writeLock().lock();
try {
userNotifications.clear();
for (Notification notification : dataManager.getNotifications()) {
getUserNotificationsUnsafe(notification.getUserId()).add(notification);
}
} finally {
notificationsLock.writeLock().unlock();
}
} catch (SQLException error) {
Log.warning(error);
}
}
}
public Notification getUserNotificationByType(long userId, String type) {
notificationsLock.readLock().lock();
try {
for (Notification notification : getUserNotificationsUnsafe(userId)) {
if (notification.getType().equals(type)) {
return notification;
}
}
} finally {
notificationsLock.readLock().unlock();
}
return null;
}
public void updateNotification(Notification notification) {
Notification cachedNotification = getUserNotificationByType(notification.getUserId(), notification.getType());
if (cachedNotification != null) {
if (cachedNotification.getWeb() != notification.getWeb()
|| cachedNotification.getMail() != notification.getMail()
|| !cachedNotification.getAttributes().equals(notification.getAttributes())) {
if (!notification.getWeb() && !notification.getMail()
&& notification.getAttributes().isEmpty()) {
try {
dataManager.removeNotification(cachedNotification);
} catch (SQLException error) {
Log.warning(error);
}
notificationsLock.writeLock().lock();
try {
getUserNotificationsUnsafe(notification.getUserId()).remove(cachedNotification);
} finally {
notificationsLock.writeLock().unlock();
}
} else {
notificationsLock.writeLock().lock();
try {
cachedNotification.setWeb(notification.getWeb());
cachedNotification.setMail(notification.getMail());
cachedNotification.setAttributes(notification.getAttributes());
} finally {
notificationsLock.writeLock().unlock();
}
try {
dataManager.updateNotification(cachedNotification);
} catch (SQLException error) {
Log.warning(error);
}
}
} else {
notification.setId(cachedNotification.getId());
}
} else if (notification.getWeb() || notification.getMail() || !notification.getAttributes().isEmpty()) {
try {
dataManager.addNotification(notification);
} catch (SQLException error) {
Log.warning(error);
}
notificationsLock.writeLock().lock();
try {
getUserNotificationsUnsafe(notification.getUserId()).add(notification);
} finally {
notificationsLock.writeLock().unlock();
}
}
}
public Set<Notification> getAllNotifications() {
Set<Notification> notifications = new HashSet<>();
long id = 1;
Field[] fields = Event.class.getDeclaredFields();
for (Field field : fields) {
if (Modifier.isStatic(field.getModifiers()) && field.getName().startsWith("TYPE_")) {
try {
Notification notification = new Notification();
notification.setType(field.get(null).toString());
notification.setId(id++);
notifications.add(notification);
} catch (IllegalArgumentException | IllegalAccessException error) {
Log.warning(error);
}
}
}
return notifications;
}
public Collection<Notification> getAllUserNotifications(long userId) {
Map<String, Notification> notifications = new HashMap<>();
for (Notification notification : getAllNotifications()) {
notification.setUserId(userId);
notifications.put(notification.getType(), notification);
}
for (Notification notification : getUserNotifications(userId)) {
notifications.put(notification.getType(), notification);
}
return notifications.values();
}
}
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