1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* Copyright 2024 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;
import com.google.inject.Injector;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import jakarta.inject.Inject;
import jakarta.inject.Singleton;
import org.traccar.config.Config;
import org.traccar.database.BufferingManager;
import org.traccar.database.NotificationManager;
import org.traccar.handler.BasePositionHandler;
import org.traccar.handler.ComputedAttributesHandler;
import org.traccar.handler.CopyAttributesHandler;
import org.traccar.handler.DatabaseHandler;
import org.traccar.handler.DistanceHandler;
import org.traccar.handler.EngineHoursHandler;
import org.traccar.handler.FilterHandler;
import org.traccar.handler.GeocoderHandler;
import org.traccar.handler.GeofenceHandler;
import org.traccar.handler.GeolocationHandler;
import org.traccar.handler.HemisphereHandler;
import org.traccar.handler.MotionHandler;
import org.traccar.handler.OutdatedHandler;
import org.traccar.handler.PositionForwardingHandler;
import org.traccar.handler.PostProcessHandler;
import org.traccar.handler.SpeedLimitHandler;
import org.traccar.handler.TimeHandler;
import org.traccar.handler.events.AlertEventHandler;
import org.traccar.handler.events.BaseEventHandler;
import org.traccar.handler.events.BehaviorEventHandler;
import org.traccar.handler.events.CommandResultEventHandler;
import org.traccar.handler.events.DriverEventHandler;
import org.traccar.handler.events.FuelEventHandler;
import org.traccar.handler.events.GeofenceEventHandler;
import org.traccar.handler.events.IgnitionEventHandler;
import org.traccar.handler.events.MaintenanceEventHandler;
import org.traccar.handler.events.MediaEventHandler;
import org.traccar.handler.events.MotionEventHandler;
import org.traccar.handler.events.OverspeedEventHandler;
import org.traccar.handler.network.AcknowledgementHandler;
import org.traccar.helper.PositionLogger;
import org.traccar.model.Position;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Queue;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@Singleton
@ChannelHandler.Sharable
public class ProcessingHandler extends ChannelInboundHandlerAdapter implements BufferingManager.Callback {
private final NotificationManager notificationManager;
private final PositionLogger positionLogger;
private final BufferingManager bufferingManager;
private final List<BasePositionHandler> positionHandlers;
private final List<BaseEventHandler> eventHandlers;
private final PostProcessHandler postProcessHandler;
private final Map<Long, Queue<Position>> queues = new HashMap<>();
private synchronized Queue<Position> getQueue(long deviceId) {
return queues.computeIfAbsent(deviceId, k -> new LinkedList<>());
}
@Inject
public ProcessingHandler(
Injector injector, Config config, NotificationManager notificationManager, PositionLogger positionLogger) {
this.notificationManager = notificationManager;
this.positionLogger = positionLogger;
bufferingManager = new BufferingManager(config, this);
positionHandlers = Stream.of(
OutdatedHandler.class,
TimeHandler.class,
GeolocationHandler.class,
HemisphereHandler.class,
DistanceHandler.class,
FilterHandler.class,
GeofenceHandler.class,
GeocoderHandler.class,
SpeedLimitHandler.class,
MotionHandler.class,
EngineHoursHandler.class,
ComputedAttributesHandler.class,
CopyAttributesHandler.class,
PositionForwardingHandler.class,
DatabaseHandler.class)
.map((clazz) -> (BasePositionHandler) injector.getInstance(clazz))
.filter(Objects::nonNull)
.collect(Collectors.toUnmodifiableList());
eventHandlers = Stream.of(
MediaEventHandler.class,
CommandResultEventHandler.class,
OverspeedEventHandler.class,
BehaviorEventHandler.class,
FuelEventHandler.class,
MotionEventHandler.class,
GeofenceEventHandler.class,
AlertEventHandler.class,
IgnitionEventHandler.class,
MaintenanceEventHandler.class,
DriverEventHandler.class)
.map((clazz) -> (BaseEventHandler) injector.getInstance(clazz))
.filter(Objects::nonNull)
.collect(Collectors.toUnmodifiableList());
postProcessHandler = injector.getInstance(PostProcessHandler.class);
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
if (msg instanceof Position) {
bufferingManager.accept(ctx, (Position) msg);
} else {
super.channelRead(ctx, msg);
}
}
@Override
public void onReleased(ChannelHandlerContext context, Position position) {
Queue<Position> queue = getQueue(position.getDeviceId());
boolean queued;
synchronized (queue) {
queued = !queue.isEmpty();
queue.offer(position);
}
if (!queued) {
processPositionHandlers(context, position);
}
}
private void processPositionHandlers(ChannelHandlerContext ctx, Position position) {
var iterator = positionHandlers.iterator();
iterator.next().handlePosition(position, new BasePositionHandler.Callback() {
@Override
public void processed(boolean filtered) {
if (!filtered) {
if (iterator.hasNext()) {
iterator.next().handlePosition(position, this);
} else {
processEventHandlers(ctx, position);
}
} else {
finishedProcessing(ctx, position, true);
}
}
});
}
private void processEventHandlers(ChannelHandlerContext ctx, Position position) {
eventHandlers.forEach(handler -> handler.analyzePosition(
position, (event) -> notificationManager.updateEvents(Map.of(event, position))));
finishedProcessing(ctx, position, false);
}
private void finishedProcessing(ChannelHandlerContext ctx, Position position, boolean filtered) {
if (!filtered) {
postProcessHandler.handlePosition(position, ignore -> {
positionLogger.log(ctx, position);
ctx.writeAndFlush(new AcknowledgementHandler.EventHandled(position));
processNextPosition(ctx, position.getDeviceId());
});
} else {
ctx.writeAndFlush(new AcknowledgementHandler.EventHandled(position));
processNextPosition(ctx, position.getDeviceId());
}
}
private void processNextPosition(ChannelHandlerContext ctx, long deviceId) {
Queue<Position> queue = getQueue(deviceId);
Position nextPosition;
synchronized (queue) {
queue.poll(); // remove current position
nextPosition = queue.peek();
}
if (nextPosition != null) {
processPositionHandlers(ctx, nextPosition);
}
}
}
|
