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grpc's Introduction

Grpc con Spring Boot y Quarkus

En este ejemplo vemos como usar grpc con spring boot y quarkus:

  • Spring boot
  • Quarkus
  • Grpc

Lo siguiente es generar los binarios de productor y consumidor

mvn clean install

Una vez generado los binarios podemos atacar el api de grpc usando la herramienta grpcurl:

Grpc Spring Boot

  • Arrancar el servicio de grpc con el siguiente commando
mvn spring-boot:run
  • Con el siguiente comando vamos a listar los servicios que tiene
grpcurl --plaintext localhost:6566 list
com.xabe.CarEndPoint
grpc.health.v1.Health
grpc.reflection.v1alpha.ServerReflection
  • Ahora vamos a listar los endpoints que tiene nuestro servicio de CarEnpoint
grpcurl --plaintext localhost:6566 list com.xabe.CarEndPoint
com.xabe.CarEndPoint.GetCar
com.xabe.CarEndPoint.SearchCar
com.xabe.CarEndPoint.UploadCarImage
  • Tambien obtener la definición de los servicios
grpcurl --plaintext localhost:6566 describe com.xabe.CarEndPoint
com.xabe.CarEndPoint is a service:
service CarEndPoint {
  rpc GetCar ( .com.xabe.car.GetCarRequest ) returns ( .com.xabe.car.GetCarResponse );
  rpc SearchCar ( .com.xabe.car.SearchCarRequest ) returns ( stream .com.xabe.car.SearchCarResponse );
  rpc UploadCarImage ( stream .com.xabe.car.UploadCarImageRequest ) returns ( .com.xabe.car.UploadCarImageResponse );
}
grpcurl --plaintext localhost:6566 describe com.xabe.car.GetCarRequest
com.xabe.car.GetCarRequest is a message:
message GetCarRequest {
  string id = 1;
}
  • Con los siguientes comandos vamos a invocar a cada uno de los endpoints:
grpcurl -d @ --plaintext localhost:6566 com.xabe.CarEndPoint/GetCar <<EOM
{
 "id":"1"
 }
EOM
grpcurl -d @ --plaintext localhost:6566 com.xabe.CarEndPoint/SearchCar <<EOM
{
 "brand":"mazda"
}
EOM
grpcurl -d @ --plaintext localhost:6566 com.xabe.CarEndPoint/UploadCarImage <<EOM
{"car_info":{"id" : "1"}}
{"car_data":{"chunk_data":[]}}
EOM

Grpc Quarkus

  • Arrancar el servicio de grpc con el siguiente commando
mvn quarkus:dev
  • Con el siguiente comando vamos a listar los servicios que tiene
grpcurl --plaintext localhost:6566 list
com.xabe.CarEndPoint
grpc.health.v1.Health
  • Ahora vamos a listar los endpoints que tiene nuestro servicio de CarEnpoint
grpcurl --plaintext localhost:6566 list com.xabe.CarEndPoint
com.xabe.CarEndPoint.GetCar
com.xabe.CarEndPoint.GetNavigateCar
  • Tambien obtener la definición de los servicios
grpcurl --plaintext localhost:6566 describe com.xabe.CarEndPoint
com.xabe.CarEndPoint is a service:
service CarEndPoint {
  rpc GetCar ( .com.xabe.car.GetCarRequest ) returns ( .com.xabe.car.GetCarResponse );
  rpc GetNavigateCar ( stream .com.xabe.car.GetNavigateCarRequest ) returns ( stream .com.xabe.car.GetNavigateCarResponse );
}
grpcurl --plaintext localhost:6566 describe com.xabe.car.GetCarRequest
com.xabe.car.GetCarRequest is a message:
message GetCarRequest {
  string id = 1;
}
  • Con los siguientes comandos vamos a invocar a cada uno de los endpoints:
grpcurl -d @ --plaintext localhost:6566 com.xabe.CarEndPoint/GetCar <<EOM
{
 "id":"1"
 }
EOM
grpcurl -d @ --plaintext localhost:6566 com.xabe.CarEndPoint/GetNavigateCar <<EOM
{"id":"1","distance_travelled":5}
{"id":"1","distance_travelled":15}
{"id":"1","distance_travelled":30}
{"id":"1","distance_travelled":25}
{"id":"1","distance_travelled":25}
EOM

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