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um framework moderno e performático para comunicação entre microsserviços

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servidor

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servidor

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navegador servidor

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navegador servidor requisição

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navegador servidor db requisição

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navegador servidor db requisição resposta

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navegador requisição resposta db

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navegador requisição resposta

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navegador requisição resposta

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navegador requisição resposta

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navegador requisição resposta

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navegador requisição resposta

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navegador requisição resposta

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navegador requisição resposta

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navegador requisição resposta

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Pode piorar…

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Mas tudo pode piorar…

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Data Center #1

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Data Center #1 Data Center #2

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X

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Rafael Ponte @rponte

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Fortaleza - Terra do Sol

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gRPC Remote Procedure Call framework

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gRPC Remote Procedure Call framework

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Loja Virtual

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Online Shop Payment Service Pagamento Online

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234…

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS cobre R$16.99 do cartão de crédito 9876…

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS cobre R$16.99 do cartão de crédito 9876… ERROR

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Como implementamos essa lógica?

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Spring Boot App

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Spring Boot App

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Spring Boot App Client 
 (Online Shop) Service (Payment Service)

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Spring Boot App Client 
 (Online Shop) Service (Payment Service)

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Spring Boot App Client 
 (Online Shop) Service (Payment Service) Local Calls

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Spring Boot App Client 
 (Online Shop) Service (Payment Service) Local Calls

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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Mas quando trabalhamos com sistemas distribuídos…

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS

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Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS

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Spring Boot App Spring Boot App

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Spring Boot App Spring Boot App

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Spring Boot App Spring Boot App Client 
 (Online Shop)

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Spring Boot App Spring Boot App Service (Payment Service) Client 
 (Online Shop)

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Spring Boot App Spring Boot App 
 Internet Client 
 (Online Shop) Service (Payment Service)

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Spring Boot App Spring Boot App 
 Internet Client 
 (Online Shop) Service (Payment Service)

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Spring Boot App Spring Boot App 
 Internet Remote Calls Client 
 (Online Shop) Service (Payment Service)

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Spring Boot App Spring Boot App 
 Internet Remote Calls Client 
 (Online Shop) Service (Payment Service)

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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framework RPC

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Online Shop Payment Service RPC Framework

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Online Shop Payment Service RPC Framework RPC client RPC server

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub waiting

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub {

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub {

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {

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Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... }

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PaymentRequest request = new PaymentRequest() ; request.setCardNumber("1234 5678 8765 4321"); request.setExpiryDate("03/2028"); request.setCvc("123") ; request.setAmount(120.2) ; request.setCurrency(Currency.BRL) ; Result result = paymentService.processPayment(request) ; if (result.isSuccess()) { // processa fluxo do pedido... } Location Transparency

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Mas na prática…

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Spring Boot App Spring Boot App 
 Internet Remote Calls Client 
 (Online Shop) Service (Payment Service)

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Spring Boot App Spring Boot App Client 
 (Online Shop) Service (Payment Service) 
 Internet Remote Calls

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Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls

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Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls

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Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls

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Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls

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Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls

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Spring Boot App Spring Boot App 
 Internet Client 
 (Online Shop) Service (Payment Service) Remote Calls

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https://deniseyu.io/art/

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Falando em frameworks…

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1990

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CORBA 1990

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CORBA 1990 DCOM 
 e Java RMI 199x

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CORBA 1990 DCOM 
 e Java RMI SOAP 1998 199x

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CORBA 1990 DCOM 
 e Java RMI SOAP Thrift 2007 1998 199x

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CORBA 1990 DCOM 
 e Java RMI SOAP Thrift gRPC 2015 2007 1998 199x

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https://tools.ietf.org/html/rfc707

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https://tools.ietf.org/html/rfc707

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https://tools.ietf.org/html/rfc707

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gRPC Remote Procedure Call framework

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gRPC Remote Procedure Call framework

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gRPC Remote Procedure Call framework simple & idiomatic

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gRPC Remote Procedure Call framework simple & idiomatic performant & scalable

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gRPC Remote Procedure Call framework simple & idiomatic performant & scalable interoperable & extensible

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gRPC vs REST API with JSON https://docs.microsoft.com/en-us/aspnet/core/grpc/comparison?view=aspnetcore-5.0

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gRPC Remote Procedure Call framework simple & idiomatic performant & scalable interoperable & extensible

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gRPC Remote Procedure Call framework IDL performant & scalable interoperable & extensible

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gRPC Remote Procedure Call framework IDL HTTP/2 interoperable & extensible

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gRPC Remote Procedure Call framework IDL HTTP/2 Protobuf v3

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Public REST API

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API Gateway Public REST API

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API Gateway http http http http http Public REST API

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API Gateway Public REST API http http http http http

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API Gateway http http http http http Public REST API gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC

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API Gateway http http http http http Public REST API gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC

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Performance

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3x increase in throughput Performance

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3x increase in throughput 11x di ff erence per CPU Performance https://cloud.google.com/blog/products/gcp/announcing-grpc-alpha-for-google-cloud-pubsub

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Seu smartphone agradece!

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IDL (Interface De fi nition Language)

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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Compilando o arquivo .proto

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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Channel channel = ManagedChannelBuilde r .forAddress("paymentservice.com", 50051 ) .build() ; PaymentServiceBlockingStub paymentService = PaymentServiceGrpc.newBlockingStub(channel) ; PaymentRequest request = newBuilder( ) .setCardNumber("1234 5678 8765 4321" ) .setExpiryDate("03/2028" ) .setCvc("123" ) .setAmount(120.2 ) .setCurrency(Currency.BRL ) .build() ; PaymentResponse result = paymentService.processPayment(request) ; if (result.getSuccess()) { // processa fluxo do pedido.. . } gRPC Client | Consumindo endpoint de pagamento

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No fi nal das contas…

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Protobuf Work fl ow

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.proto 1 Define Protobuf Work fl ow

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.proto protoc 1 Define 2 Compile Protobuf Work fl ow

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.proto protoc go java python 1 Define 2 Compile Protobuf Work fl ow

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.proto protoc go java python 1 Define 2 Compile 0101010
 1010101
 0101010
 3 Serialize Protobuf Work fl ow

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gRPC Work fl ow

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.proto 1 Define gRPC Work fl ow

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.proto protoc 1 Define 2 Compile gRPC Work fl ow

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.proto protoc go java python 1 Define 2 Compile gRPC Work fl ow

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.proto protoc go java python 1 Define 2 Compile server 3 Implement gRPC Work fl ow client

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.proto protoc go java python 1 Define 2 Compile server 3 Implement gRPC Work fl ow client

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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syntax = "proto3" ; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } } message PaymentRequest { enum Currency { BRL = 0 ; USD = 1 ; } string cardNumber = 1 ; string expiryDate = 2 ; string cvc = 3 ; double amount = 4 ; Currency currency = 5 ; } message PaymentResponse { bool success = 1 ; string txId = 2 ; } paymentService.proto

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Override public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Override public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Override public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver responseObserver) { // lógica de negóci o Payment payment = toPayment(request); // converte para modelo de domíni o UUID transactionId = new PaymentService().process(payment) ; // envia resposta para o clien t responseObserver.onNext(PaymentResponse.newBuilder( ) .setTxId(transactionId.toString() ) .setSuccess(true ) .build()) ; responseObserver.onCompleted() ; } } gRPC Server | Expondo endpoint de pagamento

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Padrões de comunicação

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1 2 3 4

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server client Simple RPC (Unary RPC) 2 3 4

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server client server client Simple RPC (Unary RPC) Server-side Streaming RPC 3 4

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server client server client server client Simple RPC (Unary RPC) Server-side Streaming RPC Client-side Streaming RPC 4

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server client server client server client server client Simple RPC (Unary RPC) Server-side Streaming RPC Client-side Streaming RPC Bidirectional Streaming RPC

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) { } rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) { } rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto Simple RPC (Unary RPC)

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) { } rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) { } rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto Server-side Streaming RPC

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) {} rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) {} rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) {} rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto Client-side Streaming RPC

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) { } rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) {} rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto

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syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) {} rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream ValidateCCResponse) { } } paymentService.proto Bidirectional Streaming RPC

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paymentService.proto syntax = "proto3"; service PaymentService { rpc processPayment(PaymentRequest) returns (PaymentResponse) { } rpc listenToTransactions(TransactionRequest) returns (stream TransactionResponse) { } rpc processPaymentInBatch(stream PaymentInBatchRequest) returns (PaymentInBatchResponse) { } rpc validateCreditCard(stream CreditCardRequest) returns (stream CreditCardResponse) { } }

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.proto protoc go java python 1 Define 2 Compile server 3 Implement gRPC Work fl ow client

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CONCLUINDO

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Microservices

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Microservices Mobile

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Microservices Mobile Realtime

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https://grpc.io/

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https://www.zup.com.br/orange-talents

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@rponte Rafael Ponte