packetHandlers = new ArrayList<>();
22 |
23 | public PacketManager() {
24 | subscribePacket(new ServiceCacheUpdatePacket());
25 | addPacketHandler(new PacketHandler() {
26 | @Override
27 | public void onSend(DataPacket packet) {}
28 |
29 | @Override
30 | public void onReceive(DataPacket packet) {
31 | if (!(packet instanceof ServiceCacheUpdatePacket)) return;
32 |
33 | JBridgeCore core = JBridgeCore.getInstance();
34 | ServiceInfo cache = core.getGson().fromJson(((ServiceCacheUpdatePacket) packet).cache, ServiceInfo.class);
35 | core.getServiceInfoCache().put(cache.getShortId(), cache);
36 | }
37 | });
38 | }
39 |
40 | public void subscribePacket(DataPacket ...packets) {
41 | Arrays.stream(packets).forEach(packet -> {
42 | JBridgeCore core = JBridgeCore.getInstance();
43 |
44 | if (!registeredPackets.containsKey(packet.getPid())) {
45 | registeredPackets.put(packet.getPid(), packet.getClass());
46 |
47 | if (core.isDebug()) {
48 | core.getLogger().debug(String.format("DataPacket \"%s:%s\" has subscribed!",
49 | packet.getPid(),
50 | packet.getClass().getSimpleName()
51 | ));
52 | }
53 |
54 | return;
55 | }
56 |
57 | core.getLogger().warn(String.format("DataPacket \"%s\" is already subscribed!",
58 | packet.getPid()
59 | ));
60 | });
61 | }
62 |
63 | public void publishPacket(DataPacket ...packets) {
64 | Arrays.stream(packets).forEach(packet -> CompletableFuture.runAsync(() -> handlePacketEncoding(packet)));
65 | }
66 |
67 | public void handlePacketEncoding(DataPacket packet) {
68 | JBridgeCore core = JBridgeCore.getInstance();
69 | packet.setSender(core.getCurrentServiceInfo().getShortId());
70 |
71 | try (Jedis jedis = core.getJedisPool().getResource()) {
72 | ByteArrayDataOutput output = ByteStreams.newDataOutput();
73 |
74 | output.writeByte(packet.getPid());
75 | packet.mainEncode(output);
76 |
77 | jedis.publish(JBridgeCore.PACKET_CHANNEL, output.toByteArray());
78 | packetHandlers.forEach(packetHandler -> packetHandler.onSend(packet));
79 |
80 | if (!core.isDebug()) return;
81 |
82 | core.getLogger().debug(String.format("DataPacket \"%s:%s\" was encoded and sent!",
83 | packet.getPid(),
84 | packet.getClass().getSimpleName()
85 | ));
86 | }
87 | }
88 |
89 | public DataPacket getPacket(byte pid) {
90 | Class classInstance = registeredPackets.get(pid);
91 | if (classInstance == null) return null;
92 |
93 | try {
94 | return classInstance.getDeclaredConstructor().newInstance();
95 | } catch (Exception e) {
96 | e.printStackTrace();
97 | }
98 | return null;
99 | }
100 |
101 | public void handlePacketDecoding(byte[] message) {
102 | ByteArrayDataInput input = ByteStreams.newDataInput(message);
103 | byte pid = input.readByte();
104 | DataPacket packet = getPacket(pid);
105 |
106 | JBridgeCore core = JBridgeCore.getInstance();
107 |
108 | if (packet == null) {
109 | if (core.isDebug()) {
110 | core.getLogger().debug(String.format("DataPacket \"%s\" is not subscribed!", pid));
111 | }
112 | return;
113 | }
114 |
115 | packet.mainDecode(input);
116 | packetHandlers.forEach(packetHandler -> {
117 | Runnable runnable = () -> packetHandler.onReceive(packet);
118 |
119 | if (packet instanceof AsyncPacket) {
120 | CompletableFuture.runAsync(runnable);
121 | } else {
122 | runnable.run();
123 | }
124 | });
125 |
126 | if (!core.isDebug()) return;
127 |
128 | core.getLogger().debug(String.format("DataPacket \"%s:%s\" was decoded and handled!",
129 | packet.getPid(),
130 | packet.getClass().getSimpleName()
131 | ));
132 | }
133 |
134 | public void addPacketHandler(PacketHandler packetHandler) {
135 | packetHandlers.add(packetHandler);
136 | }
137 | }
138 |
--------------------------------------------------------------------------------
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/README.md:
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1 | 
2 |
3 |
4 |
5 | JBridge facilitates communication in minecraft bedrock networks, between Nukkit servers and WaterdogPE proxies using Redis
6 |
7 | ## Features 📃
8 |
9 | - [x] Server management system available for both clients
10 |
11 |
12 | 
13 | Example: This code is used in the same way for jbridge-lobby-nukkit and jbridge-lobby-waterdogpe.
14 |
15 | as the first parameter a list with the group of services for the lobby and as the second parameter the sort mode, in this case LOWEST, the algorithm will choose the lobby server with the lowest number of players to balance the lobby servers
16 |
17 |
18 | - [x] Packet system using message broker
19 |
20 | We have a packet system in which you can create your own packets and manage them in a simple way, of course if you are a developer, as an additional note you can create async packets, especially for tasks that can cause lag,
21 | when a packet arrives at a service, it will execute the async by calling the method "onReceive(DataPacket packet);" of your PacketHandler
22 |
23 | - [x] Lobby System, [JBirdgeLobby](https://github.com/Josscoder/JBridge/tree/release/jbridge-lobby)
24 |
25 | As an example to use jbridge, we have a lobby balancing system, compatible with nukkit and waterdogpe, from nukkit you will have the /hub command available,
26 | From waterdogpe you will have a Custom JoinHandler (which will look for a balanced server in the lobby service list and send the player) and a Custom ReconnectHandler (which will be used when the player is disconnected from an old service for some reason, and will be sent to a balanced lobby).
27 |
28 | - [x] Custom commands to manage servers/services
29 |
30 | By WaterdogPE we have the commands:
31 |
32 | - /wdlist: command waterdgope, overwritten for more compatibility with JBridge, will show the list of servers, with their ids, players, group, region and branch (PERMISSION: waterdog.command.list.permission, ALIASES: "servicelist", "services", "servers", "glist", "rglist")
33 | - /whereami: Provide information about the proxy you are on (ALIASES: "connection")
34 |
35 | By Nukkit we have the commands:
36 |
37 | - /transfer: It will send you to the server that you write, you can write the first two letters of the server and it will autocomplete (PERMISSION: jbrdige.command.transfer)
38 | - /whereami: Provide information about the server you are on (ALIASES: "connection")
39 |
40 |
41 | - [x] Custom Query and Ping events
42 |
43 | Each time a new service is added, the new available slots are added
44 |
45 | 
46 | 
47 | 
48 | 
49 |
50 | - [x] Server Cluster System
51 |
52 | As I mentioned before, jbridge can manage services by groups, you can see more about it [here](https://github.com/Josscoder/JBridge/blob/release/jbridge-common/src/main/java/me/josscoder/jbridge/service/ServiceHandler.java)
53 |
54 | - [x] Automatic server registration at WaterdogPE without the need to specify servers manually in the Waterdog config.
55 |
56 | 
57 | 
58 |
59 | - [ ] Multi-group support
60 |
61 | ## Download and setup 🛒
62 |
63 | [](https://github.com/Josscoder/JBridge/actions/workflows/maven.yml)
64 |
65 |
66 | Nukkit
67 |
68 | 1) Download the latest jbridge-nukkit.jar [here](https://github.com/Josscoder/JBridge/releases/latest)
69 | 2) Place the .jar in the plugins/ folder of your server
70 | 3) Start your server
71 | 4) Configure the service and your redis client in plugins/JBridge/config.yml
72 |
73 |
74 |
75 | Waterdog
76 |
77 | 1) Download the latest jbridge-waterdogpe.jar [here](https://github.com/Josscoder/JBridge/releases/latest)
78 | 2) Place the .jar in the plugins/ folder of your server
79 | 3) Start your server
80 | 4) Configure the service and your redis client in plugins/JBridge/config.yml
81 |
82 |
83 |
84 | How to configure
85 |
86 | ```yml
87 | debug: true #Just for development, to show the internal process of JBridge commons
88 | #recommendation to set this to false to avoid saturating the console with logs
89 |
90 | redis: #the configuration of your redis
91 | hostname: "localhost"
92 | port: 6379
93 | password: "yourpasswordhere"
94 |
95 | service: #configuration of your service
96 | id: "hub-1" #the id of your service, if you remove this section, the system will generate a custom id each time the plugin is enabled
97 | group: "hub" #the group your service belongs to
98 | region: "us" #the region to which your service belongs
99 | branch: "dev" #the branch of your service, if it is "dev" the address will automatically change to "127.0.0.1"
100 | address: "0.0.0.0" #the address of your service, if you remove this section you will get the address that is in server.propierties
101 | ```
102 |
103 |
104 | ## For developers 🧑💻
105 | ### Add JBridge to your project
106 |
107 | [](https://jitpack.io/#Josscoder/JBridge)
108 |
109 | ### Common
110 | ```xml
111 |
112 |
113 | jitpack.io
114 | https://jitpack.io
115 |
116 |
117 |
118 |
119 |
120 | com.github.Josscoder.JBridge
121 | jbridge-common
122 | TAG
123 |
124 |
125 | ```
126 |
127 | ### Nukkit
128 | ```xml
129 |
130 |
131 | jitpack.io
132 | https://jitpack.io
133 |
134 |
135 |
136 |
137 |
138 | com.github.Josscoder.JBridge
139 | jbridge-nukkit
140 | TAG
141 |
142 |
143 | ```
144 |
145 | ### WaterdogPE
146 | ```xml
147 |
148 |
149 | jitpack.io
150 | https://jitpack.io
151 |
152 |
153 |
154 |
155 |
156 | com.github.Josscoder.JBridge
157 | jbridge-waterdogpe
158 | TAG
159 |
160 |
161 | ```
162 |
163 | ### Code examples
164 |
165 |
166 | Register packets
167 |
168 | ```java
169 | import com.google.common.io.ByteArrayDataInput;
170 | import com.google.common.io.ByteArrayDataOutput;
171 | import me.josscoder.jbridge.JBridgeCore;
172 | import me.josscoder.jbridge.packet.DataPacket;
173 | import me.josscoder.jbridge.packet.PacketManager;
174 |
175 | public class Test {
176 |
177 | static class HelloWorldPacket extends DataPacket {
178 |
179 | public String message;
180 |
181 | public HelloWorldPacket() {
182 | super((byte) 0x53);
183 | }
184 |
185 | @Override
186 | public void encode(ByteArrayDataOutput output) {
187 | output.writeUTF(message);
188 | }
189 |
190 | @Override
191 | public void decode(ByteArrayDataInput input) {
192 | message = input.readUTF();
193 | }
194 | }
195 |
196 | public static void main(String[] args) {
197 | PacketManager packetManager = JBridgeCore.getInstance().getPacketManager();
198 |
199 | packetManager.subscribePacket(new HelloWorldPacket());
200 | }
201 | }
202 | ```
203 |
204 |
205 | Register PacketHandlers
206 |
207 | ```java
208 | import com.google.common.io.ByteArrayDataInput;
209 | import com.google.common.io.ByteArrayDataOutput;
210 | import me.josscoder.jbridge.JBridgeCore;
211 | import me.josscoder.jbridge.packet.DataPacket;
212 | import me.josscoder.jbridge.packet.PacketHandler;
213 | import me.josscoder.jbridge.packet.PacketManager;
214 |
215 | public class Test {
216 |
217 | static class HelloWorldPacket extends DataPacket {
218 |
219 | public String message;
220 |
221 | public HelloWorldPacket() {
222 | super((byte) 0x53);
223 | }
224 |
225 | @Override
226 | public void encode(ByteArrayDataOutput output) {
227 | output.writeUTF(message);
228 | }
229 |
230 | @Override
231 | public void decode(ByteArrayDataInput input) {
232 | message = input.readUTF();
233 | }
234 | }
235 |
236 | public static void main(String[] args) {
237 | PacketManager packetManager = JBridgeCore.getInstance().getPacketManager();
238 |
239 | packetManager.subscribePacket(new HelloWorldPacket());
240 |
241 | packetManager.addPacketHandler(new PacketHandler() {
242 | @Override
243 | public void onSend(DataPacket packet) {
244 | if (packet instanceof HelloWorldPacket) {
245 | System.out.println("Sending hello world message!!");
246 | }
247 | }
248 |
249 | @Override
250 | public void onReceive(DataPacket packet) {
251 | if (packet instanceof HelloWorldPacket) {
252 | System.out.println(((HelloWorldPacket) packet).message);
253 | }
254 | }
255 | });
256 | }
257 | }
258 | ```
259 |
260 |
261 | Using AsyncPacket
262 |
263 | ```java
264 | import com.google.common.io.ByteArrayDataInput;
265 | import com.google.common.io.ByteArrayDataOutput;
266 | import me.josscoder.jbridge.JBridgeCore;
267 | import me.josscoder.jbridge.packet.AsyncPacket;
268 | import me.josscoder.jbridge.packet.DataPacket;
269 | import me.josscoder.jbridge.packet.PacketHandler;
270 | import me.josscoder.jbridge.packet.PacketManager;
271 |
272 | public class Test {
273 |
274 | static class HelloWorldPacket extends DataPacket implements AsyncPacket {
275 |
276 | public String message;
277 |
278 | public HelloWorldPacket() {
279 | super((byte) 0x53);
280 | }
281 |
282 | @Override
283 | public void encode(ByteArrayDataOutput output) {
284 | output.writeUTF(message);
285 | }
286 |
287 | @Override
288 | public void decode(ByteArrayDataInput input) {
289 | message = input.readUTF();
290 | }
291 | }
292 |
293 | public static void main(String[] args) {
294 | PacketManager packetManager = JBridgeCore.getInstance().getPacketManager();
295 |
296 | packetManager.subscribePacket(new HelloWorldPacket());
297 |
298 | packetManager.addPacketHandler(new PacketHandler() {
299 | @Override
300 | public void onSend(DataPacket packet) {
301 | if (packet instanceof HelloWorldPacket) {
302 | System.out.println("Sending hello world message!!");
303 | }
304 | }
305 |
306 | @Override
307 | public void onReceive(DataPacket packet) {
308 | if (packet instanceof HelloWorldPacket) {
309 | System.out.println("HI!! receiving async packet " + ((HelloWorldPacket) packet).message);
310 | }
311 | }
312 | });
313 | }
314 | }
315 | ```
316 |
317 |
318 | ### Included libraries 🛠️
319 |
320 | - [Lombok: Used as Annotation library](https://projectlombok.org/)
321 | - [Jedis: Used as Message Broker](https://github.com/redis/jedis)
322 | - [Google Guava: Used as coder, decoder & cache handler](https://github.com/google/guava)
323 | - [WaterdogPE: Minecraft Bedrock Proxy](https://github.com/WaterdogPE/WaterdogPE)
324 | - [Nukkit: Minecraft Bedrock Software](https://github.com/CloudburstMC/Nukkit)
325 |
326 | ## Credits 🙋♂️🙋♀️
327 |
328 | - [DinamycServers: cache handler & redis implementation](https://github.com/theminecoder/DynamicServers)
329 | - [PacketListenerAPI: packet handler system](https://www.spigotmc.org/resources/api-packetlistenerapi.2930/)
330 | - [NetherGames: Inspiration](https://forums.nethergames.org/threads/netsys-network-communication-system.10514/)
331 |
332 | ## License 🚩
333 | JBridge is licensed under the permissive Apache License 2.0 LICENSE. Please see [`LICENSE`](https://github.com/Josscoder/JBridge/blob/release/LICENSE) for more information.
334 |
--------------------------------------------------------------------------------