A WebSocket library that draws heavily from the Scarlet by Tinder.
Currently, support only for Coroutine Flow.
- CryptoApp : You can see Thunder embedded in a real-time data architecture.
-
WebSocket connection using OkHttp3.
-
Regardless of the state of your app, if it's alive, it will automatically manage to stay connected.
-
Provide retry and reconnect handling based on the application's network and socket state.
-
Provide the ability to automatically recover requests via the last request cache.
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Provides a websocket connection based on the STOMP. If you use STOMP, you must read this.
-
New development with KSP to increase runtime stability. (coming in 2.0.X)
- Gson
- KotlinX-Serialization (Default)
Thunder is available via Maven Central.
First, go to your settings.gradle file and add the code below.
[settings.gradle]
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {
google()
mavenCentral() <-- here! you have to copy & paste
}
}Use the library by adding a Dependency to the module you want to use.
Check Latest Version here :
Gradle
dependencies {
implementation 'io.github.jaeyunn15:thunder:1.1.0' // must required
implementation 'io.github.jaeyunn15:thunder-okhttp:1.1.0' // must required
}libs.versions
thunder = { group = "io.github.jaeyunn15", name = "thunder", version = "1.1.0" }
thunderOkhttp = { group = "io.github.jaeyunn15", name = "thunder-okhttp", version = "1.1.0" }The minimum SDK version provided by Thunder is 24.
First, we need to define an interface to request data and receive responses.
interface SocketService {
@Send
fun request(request: BinanceRequest)
@Receive
fun response(): Flow<TickerResponse>
}Second, we need to create a Thunder instance, which requires an ApplicationContext and an OkHttpClient.
val thunderInstance = Thunder.Builder()
.setWebSocketFactory(okHttpClient.makeWebSocketCore("wss://fstream.binance.com/stream"))
.setApplicationContext(context)
.setConverterType(ConverterType.Gson)
.build()
thunderInstance.create<SocketService>()Alternatively, you can use a dependency injection library like Hilt to create them for you.
@Singleton
@Provides
fun provideOkHttpClient(): OkHttpClient {
val httpLoggingInterceptor = HttpLoggingInterceptor()
.setLevel(HttpLoggingInterceptor.Level.BODY)
return OkHttpClient.Builder()
.addInterceptor(httpLoggingInterceptor)
.pingInterval(
10,
TimeUnit.SECONDS
) // If there are no events for a minute, we need to put in some code for ping pong to output a socket connection error from okhttp.
.build()
}
@Provides
@Singleton
fun provideSocketService(
okHttpClient: OkHttpClient,
@ApplicationContext context: Context
): SocketService {
return Thunder.Builder()
.webSocketCore(okHttpClient.makeWebSocketCore("wss://fstream.binance.com/stream"))
.setApplicationContext(context)
.setConverterType(ConverterType.Gson)
.build()
.create()
}
// or you can like this. (Kotlin Type-Safe Builder)
@Provides
@Singleton
fun provideSocketService(
okHttpClient: OkHttpClient,
@ApplicationContext context: Context
): SocketService {
return thunder {
webSocketCore(okHttpClient.makeWebSocketCore("wss://fstream.binance.com/stream"))
setApplicationContext(context)
setConverterType(ConverterType.Serialization)
}.create()
}You can request data based on the request format, and receive data using Flow, depending on the response format. A single request/response example used in the AAC viewmodel.
@HiltViewModel
class MainViewModel @Inject constructor(
private val service: SocketService
): ViewModel() {
private val _response = MutableStateFlow<Ticker?>(null)
val response: StateFlow<Ticker?> = _response.asStateFlow()
fun request() {
viewModelScope.launch {
service.request(request = BinanceRequest())
}
}
fun observeResponse() {
service.observeTicker().onEach { result ->
_response.update { result.data }
}.launchIn(viewModelScope)
}
}Use the library by adding a Dependency to the module you want to use.
To use the STOMP method, you must add the thunder-stomp module.
Gradle
dependencies {
implementation 'io.github.jaeyunn15:thunder:1.1.0' // must required
implementation 'io.github.jaeyunn15:thunder-okhttp:1.1.0' // must required
implementation 'io.github.jaeyunn15:thunder-stomp:1.1.0' // must required
}libs.versions
thunder = { group = "io.github.jaeyunn15", name = "thunder", version = "1.1.0" }
thunderOkhttp = { group = "io.github.jaeyunn15", name = "thunder-okhttp", version = "1.1.0" }
thunderStomp = { group = "io.github.jaeyunn15", name = "thunder-stomp", version = "1.1.0" }First, we need to define an interface to request data and receive responses.
The STOMP method requires you to use the annotation with stomp as a prefix when requesting a response.
However, when receiving a response, you can use the normal @Receive annotation.
When using STOMP, you should only use certain parameters based on the annotation.
@StompSubcribe - StompSubscribeRequest.
@StompSend - StompSendRequest
interface SocketService {
@StompSubscribe
fun subscribe(request: StompSubscribeRequest)
@StompSend
fun send(request: StompSendRequest)
@Receive
fun response(): Flow<TickerResponse>
}Second, we need to create a Thunder instance, which requires an ApplicationContext and an OkHttpClient.
If you use the STOMP method, you will need to explicitly write the StateManager and EventMapper.
val thunderInstance = Thunder.Builder()
.setWebSocketFactory(okHttpClient.makeWebSocketCore("wss://fstream.binance.com/stream"))
.setApplicationContext(context) // must required
.setConverterType(ConverterType.Serialization)
.setStateManager(StompStateManager.Factory()) // must required
.setEventMapper(StompEventMapper.Factory()) // must required
.build()
thunderInstance.create<SocketService>()Alternatively, you can use a dependency injection library like Hilt to create them for you.
@Singleton
@Provides
fun provideOkHttpClient(): OkHttpClient {
val httpLoggingInterceptor = HttpLoggingInterceptor()
.setLevel(HttpLoggingInterceptor.Level.BODY)
return OkHttpClient.Builder()
.addInterceptor(httpLoggingInterceptor)
.pingInterval(
10,
TimeUnit.SECONDS
) // If there are no events for a minute, we need to put in some code for ping pong to output a socket connection error from okhttp.
.build()
}
@Provides
@Singleton
fun provideSocketService(
okHttpClient: OkHttpClient,
@ApplicationContext context: Context
): SocketService {
return Thunder.Builder()
.setWebSocketFactory(okHttpClient.makeWebSocketCore("wss://fstream.binance.com/stream"))
.setApplicationContext(context) // must required
.setConverterType(ConverterType.Serialization)
.setStateManager(StompStateManager.Factory()) // must required
.setEventMapper(StompEventMapper.Factory()) // must required
.build()
.create()
}
// or you can like this. (Kotlin Type-Safe Builder)
@Provides
@Singleton
fun provideSocketService(
okHttpClient: OkHttpClient,
@ApplicationContext context: Context
): SocketService {
return thunder {
setWebSocketFactory(okHttpClient.makeWebSocketCore("")) //required
setApplicationContext(context) //required
setConverterType(ConverterType.Serialization)
setStateManager(StompStateManager.Factory()) // optional but if you need stomp this is required
setEventMapper(StompEventMapper.Factory()) // optional but if you need stomp this is required
}.create()
}MIT License
Copyright (c) 2023 jaeyun
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SOFTWARE.