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/*
* Copyright 2015 - 2018 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 io.netty.channel.Channel;
import io.netty.util.Timeout;
import io.netty.util.TimerTask;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.Context;
import org.traccar.GlobalTimer;
import org.traccar.Main;
import org.traccar.Protocol;
import org.traccar.handler.events.MotionEventHandler;
import org.traccar.handler.events.OverspeedEventHandler;
import org.traccar.model.Device;
import org.traccar.model.DeviceState;
import org.traccar.model.Event;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.sql.SQLException;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
public class ConnectionManager {
private static final Logger LOGGER = LoggerFactory.getLogger(ConnectionManager.class);
private static final long DEFAULT_TIMEOUT = 600;
private final long deviceTimeout;
private final boolean enableStatusEvents;
private final boolean updateDeviceState;
private final Map<Long, ActiveDevice> activeDevices = new ConcurrentHashMap<>();
private final Map<Long, Set<UpdateListener>> listeners = new ConcurrentHashMap<>();
private final Map<Long, Timeout> timeouts = new ConcurrentHashMap<>();
public ConnectionManager() {
deviceTimeout = Context.getConfig().getLong("status.timeout", DEFAULT_TIMEOUT) * 1000;
enableStatusEvents = Context.getConfig().getBoolean("event.enable");
updateDeviceState = Context.getConfig().getBoolean("status.updateDeviceState");
}
public void addActiveDevice(long deviceId, Protocol protocol, Channel channel, SocketAddress remoteAddress) {
activeDevices.put(deviceId, new ActiveDevice(deviceId, protocol, channel, remoteAddress));
}
public void removeActiveDevice(Channel channel) {
for (ActiveDevice activeDevice : activeDevices.values()) {
if (activeDevice.getChannel() == channel) {
updateDevice(activeDevice.getDeviceId(), Device.STATUS_OFFLINE, null);
activeDevices.remove(activeDevice.getDeviceId());
break;
}
}
}
public ActiveDevice getActiveDevice(long deviceId) {
return activeDevices.get(deviceId);
}
public void updateDevice(final long deviceId, String status, Date time) {
Device device = Context.getIdentityManager().getById(deviceId);
if (device == null) {
return;
}
String oldStatus = device.getStatus();
device.setStatus(status);
if (enableStatusEvents && !status.equals(oldStatus)) {
String eventType;
Map<Event, Position> events = new HashMap<>();
switch (status) {
case Device.STATUS_ONLINE:
eventType = Event.TYPE_DEVICE_ONLINE;
break;
case Device.STATUS_UNKNOWN:
eventType = Event.TYPE_DEVICE_UNKNOWN;
if (updateDeviceState) {
events.putAll(updateDeviceState(deviceId));
}
break;
default:
eventType = Event.TYPE_DEVICE_OFFLINE;
if (updateDeviceState) {
events.putAll(updateDeviceState(deviceId));
}
break;
}
events.put(new Event(eventType, deviceId), null);
Context.getNotificationManager().updateEvents(events);
}
Timeout timeout = timeouts.remove(deviceId);
if (timeout != null) {
timeout.cancel();
}
if (time != null) {
device.setLastUpdate(time);
}
if (status.equals(Device.STATUS_ONLINE)) {
timeouts.put(deviceId, GlobalTimer.getTimer().newTimeout(new TimerTask() {
@Override
public void run(Timeout timeout) {
if (!timeout.isCancelled()) {
updateDevice(deviceId, Device.STATUS_UNKNOWN, null);
}
}
}, deviceTimeout, TimeUnit.MILLISECONDS));
}
try {
Context.getDeviceManager().updateDeviceStatus(device);
} catch (SQLException error) {
LOGGER.warn("Update device status error", error);
}
updateDevice(device);
if (status.equals(Device.STATUS_ONLINE) && !oldStatus.equals(Device.STATUS_ONLINE)) {
Context.getCommandsManager().sendQueuedCommands(getActiveDevice(deviceId));
}
}
public Map<Event, Position> updateDeviceState(long deviceId) {
DeviceState deviceState = Context.getDeviceManager().getDeviceState(deviceId);
Map<Event, Position> result = new HashMap<>();
Map<Event, Position> event = Main.getInjector()
.getInstance(MotionEventHandler.class).updateMotionState(deviceState);
if (event != null) {
result.putAll(event);
}
event = Main.getInjector().getInstance(OverspeedEventHandler.class)
.updateOverspeedState(deviceState, Context.getDeviceManager().
lookupAttributeDouble(deviceId, OverspeedEventHandler.ATTRIBUTE_SPEED_LIMIT, 0, false));
if (event != null) {
result.putAll(event);
}
return result;
}
public synchronized void updateDevice(Device device) {
for (long userId : Context.getPermissionsManager().getDeviceUsers(device.getId())) {
if (listeners.containsKey(userId)) {
for (UpdateListener listener : listeners.get(userId)) {
listener.onUpdateDevice(device);
}
}
}
}
public synchronized void updatePosition(Position position) {
long deviceId = position.getDeviceId();
for (long userId : Context.getPermissionsManager().getDeviceUsers(deviceId)) {
if (listeners.containsKey(userId)) {
for (UpdateListener listener : listeners.get(userId)) {
listener.onUpdatePosition(position);
}
}
}
}
public synchronized void updateEvent(long userId, Event event) {
if (listeners.containsKey(userId)) {
for (UpdateListener listener : listeners.get(userId)) {
listener.onUpdateEvent(event);
}
}
}
public interface UpdateListener {
void onUpdateDevice(Device device);
void onUpdatePosition(Position position);
void onUpdateEvent(Event event);
}
public synchronized void addListener(long userId, UpdateListener listener) {
if (!listeners.containsKey(userId)) {
listeners.put(userId, new HashSet<UpdateListener>());
}
listeners.get(userId).add(listener);
}
public synchronized void removeListener(long userId, UpdateListener listener) {
if (!listeners.containsKey(userId)) {
listeners.put(userId, new HashSet<UpdateListener>());
}
listeners.get(userId).remove(listener);
}
}
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