5 years on air - Andrii Bereza

Grpc Introduction

Transcript

2. gRPC
3. 1. 2. 3.
4. ★ ★ ★ ★ { "id": 1, "name": "Solaire of Astora", "description": "Praise The gRPC!", "hollow": null }
5. gRPC
6. gRPC
7. gRPC
8. ➢ ➢ ➢ ➢ gRPC
9. UI Logging Data Service Data Source 1 Data Source 2 gRPC
11. ★ ★ ★ ★
12. gRPC
14. Describe (.proto) Implement (Server) Invoke (Client) Generate Code
15. message User { int32 id = 1; string name = 2; bool administrator = 3; } message name property type property name property index gRPC
16. service HelloService { rpc Hello(HelloRequest) returns (HelloResponse); } message HelloRequest { string name = 1; } message HelloResponse { string response = 1; } service name service method request type response type gRPC
18. class HelloService: HelloServiceImplBase() { } override fun hello(request: HelloRequest, responseObserver: StreamObserver<HelloResponse>) { } responseObserver.onNext( HelloResponse.newBuilder() .setResponse("Hello, " + request.name) .build() ) responseObserver.onCompleted()
19. NettyServerBuilder.forPort(4444) .addService(HelloService()) .build() .start()
20. val channel = ManagedChannelBuilder.forAddress("localhost", 4444) .build(); val request = HelloRequest.newBuilder() .setName("WALL-E") .build() val response = HelloServiceGrpc.newBlockingStub(channel) .hello(request) HelloServiceGrpc.newStub(channel) .hello(request, object: StreamObserver<HelloResponse> { override fun onNext(value: HelloResponse?) { println("I'm not alone!") } override fun onError(t: Throwable?) {} override fun onCompleted() {} })
22. ➢ ➢ ➢
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24. gRPC
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