Introdução a gRPC: um framework moderno e performático para comunicação entre microsserviços

Com a grande adoção no uso de microsserviços e implantação de sistemas nas nuvens ficou evidente que muitas das tecnologias e protocolos de comunicação utilizados não tiram o real proveito da infraestrutura existente nos grandes provedores de cloud. Não só isso, algumas vezes esta comunicação se torna o gargalo quando temos centenas ou milhares de serviços em momentos de pico.

Não à toa, em 2015, a Google publicou de forma open-source seu projeto interno de  framework RPC como solução alternativa na integração de microsserviços, aplicações mobile e real-time, conhecido como gRPC. Um framework que se apoia no ombro de gigantes como HTTP/2 e Protobuf v3 para prover alta-performance, baixa latência, uso eficiente de CPU e interoperabilidade entre plataformas. Não bastasse ser mais rápido e eficiente do que APIs REST, com gRPC abraçamos uma forma mais idiomática e expressiva de descrever APIs fortemente tipadas na linguagem de sua escolha.

Se você nunca ouviu falar ou entende pouco sobre gRPC, então essa palestra é para você!

(GRAVAÇÃO: https://youtu.be/r8gOKuWgNvw?list=PLHMMERsvy9EyWQPru4SrJAYHEGKfkjRgP&t=456)

Transcript

1. um framework moderno e performático para comunicação entre microsserviços
2. servidor
3. servidor
4. navegador servidor
5. navegador servidor requisição
6. navegador servidor db requisição
7. navegador servidor db requisição resposta
8. navegador requisição resposta db
9. navegador requisição resposta
10. navegador requisição resposta
11. navegador requisição resposta
12. navegador requisição resposta
13. navegador requisição resposta
14. navegador requisição resposta
15. navegador requisição resposta
16. navegador requisição resposta
18. Pode piorar…
20. Mas tudo pode piorar…
21. Data Center #1
22. Data Center #1 Data Center #2
26. X
32. Rafael Ponte @rponte
34. Fortaleza - Terra do Sol
36. gRPC Remote Procedure Call framework
37. gRPC Remote Procedure Call framework
38. Loja Virtual
39. Online Shop Payment Service Pagamento Online
40. Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234…
41. Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS
42. 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…
43. 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
44. Como implementamos essa lógica?
49. Spring Boot App
50. Spring Boot App
51. Spring Boot App Client 
 (Online Shop) Service (Payment Service)
52. Spring Boot App Client 
 (Online Shop) Service (Payment Service)
53. Spring Boot App Client 
 (Online Shop) Service (Payment Service) Local Calls
54. Spring Boot App Client 
 (Online Shop) Service (Payment Service) Local Calls
55. 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... }
56. 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... }
57. 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... }
58. 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... }
59. 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... }
60. 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... }
61. Mas quando trabalhamos com sistemas distribuídos…
62. Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS
63. Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS
64. Online Shop Payment Service Pagamento Online cobre R$120.20 do cartão de crédito 1234… SUCCESS
65. Spring Boot App Spring Boot App
66. Spring Boot App Spring Boot App
67. Spring Boot App Spring Boot App Client 
 (Online Shop)
68. Spring Boot App Spring Boot App Service (Payment Service) Client 
 (Online Shop)
69. Spring Boot App Spring Boot App 
 Internet Client 
 (Online Shop) Service (Payment Service)
70. Spring Boot App Spring Boot App 
 Internet Client 
 (Online Shop) Service (Payment Service)
71. Spring Boot App Spring Boot App 
 Internet Remote Calls Client 
 (Online Shop) Service (Payment Service)
72. Spring Boot App Spring Boot App 
 Internet Remote Calls Client 
 (Online Shop) Service (Payment Service)
73. 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... }
74. 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... }
75. framework RPC
76. Online Shop Payment Service RPC Framework
77. Online Shop Payment Service RPC Framework RPC client RPC server
78. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub
79. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub waiting
80. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub {
81. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub {
82. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {
83. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {
84. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {
85. Online Shop Payment Service RPC Framework RPC client RPC server processPayment() stub processPayment( ) implementation {
86. 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... }
87. 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
88. Mas na prática…
89. Spring Boot App Spring Boot App 
 Internet Remote Calls Client 
 (Online Shop) Service (Payment Service)
90. Spring Boot App Spring Boot App Client 
 (Online Shop) Service (Payment Service) 
 Internet Remote Calls
91. Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls
92. Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls
93. Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls
94. Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls
95. Spring Boot App Client 
 (Online Shop) Spring Boot App Service (Payment Service) 
 Internet Remote Calls
96. Spring Boot App Spring Boot App 
 Internet Client 
 (Online Shop) Service (Payment Service) Remote Calls
97. https://deniseyu.io/art/
98. Falando em frameworks…
100. CORBA 1990
101. CORBA 1990 DCOM 
 e Java RMI 199x
102. CORBA 1990 DCOM 
 e Java RMI SOAP 1998 199x
103. CORBA 1990 DCOM 
 e Java RMI SOAP Thrift 2007 1998 199x
104. CORBA 1990 DCOM 
 e Java RMI SOAP Thrift gRPC 2015 2007 1998 199x
105. https://tools.ietf.org/html/rfc707
106. https://tools.ietf.org/html/rfc707
107. https://tools.ietf.org/html/rfc707
108. gRPC Remote Procedure Call framework
109. gRPC Remote Procedure Call framework
110. gRPC Remote Procedure Call framework simple & idiomatic
111. gRPC Remote Procedure Call framework simple & idiomatic performant & scalable
112. gRPC Remote Procedure Call framework simple & idiomatic performant & scalable interoperable & extensible
114. gRPC vs REST API with JSON https://docs.microsoft.com/en-us/aspnet/core/grpc/comparison?view=aspnetcore-5.0
115. gRPC Remote Procedure Call framework simple & idiomatic performant & scalable interoperable & extensible
116. gRPC Remote Procedure Call framework IDL performant & scalable interoperable & extensible
117. gRPC Remote Procedure Call framework IDL HTTP/2 interoperable & extensible
118. gRPC Remote Procedure Call framework IDL HTTP/2 Protobuf v3
122. Public REST API
123. API Gateway Public REST API
124. API Gateway http http http http http Public REST API
125. API Gateway Public REST API http http http http http
126. API Gateway http http http http http Public REST API gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC
127. API Gateway http http http http http Public REST API gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC gRPC
131. Performance
132. 3x increase in throughput Performance
133. 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
134. Seu smartphone agradece!
135. IDL (Interface De fi nition Language)
136. 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
137. 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
138. 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
139. 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
140. 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
141. 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
142. 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
143. 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
144. 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
145. 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
146. 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
147. 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
148. 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
149. Compilando o arquivo .proto
150. 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
151. 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
152. 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
153. 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
154. 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
155. 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
156. 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
157. No fi nal das contas…
158. Protobuf Work fl ow
159. .proto 1 Define Protobuf Work fl ow
160. .proto protoc 1 Define 2 Compile Protobuf Work fl ow
161. .proto protoc go java python 1 Define 2 Compile Protobuf Work fl ow
162. .proto protoc go java python 1 Define 2 Compile 0101010
 1010101
 0101010
 3 Serialize Protobuf Work fl ow
163. gRPC Work fl ow
164. .proto 1 Define gRPC Work fl ow
165. .proto protoc 1 Define 2 Compile gRPC Work fl ow
166. .proto protoc go java python 1 Define 2 Compile gRPC Work fl ow
167. .proto protoc go java python 1 Define 2 Compile server 3 Implement gRPC Work fl ow client
168. .proto protoc go java python 1 Define 2 Compile server 3 Implement gRPC Work fl ow client
169. 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
170. 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
171. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Override public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
172. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Override public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
173. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Override public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
174. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
175. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
176. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
177. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
178. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
179. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
180. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
181. public class PaymentEndpoint extends PaymentServiceGrpc.PaymentServiceImplBase { @Overrid e public void processPayment(PaymentRequest request , StreamObserver<PaymentResponse> 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
182. Padrões de comunicação
184. 1 2 3 4
185. server client Simple RPC (Unary RPC) 2 3 4
186. server client server client Simple RPC (Unary RPC) Server-side Streaming RPC 3 4
187. server client server client server client Simple RPC (Unary RPC) Server-side Streaming RPC Client-side Streaming RPC 4
188. server client server client server client server client Simple RPC (Unary RPC) Server-side Streaming RPC Client-side Streaming RPC Bidirectional Streaming RPC
189. 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
190. 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)
191. 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
192. 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
193. 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
194. 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
195. 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
196. 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
197. 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) { } }
198. .proto protoc go java python 1 Define 2 Compile server 3 Implement gRPC Work fl ow client
199. CONCLUINDO
200. Microservices
201. Microservices Mobile
202. Microservices Mobile Realtime
203. https://grpc.io/
205. https://www.zup.com.br/orange-talents
206. @rponte Rafael Ponte