This repository contains an example of how to use the gRPC-Gateway.
make install
To generate the protobuf and gRPC-Gateway code, you can use the buf tool. The protobuf files are stored in the proto directory, and the generated code will be placed in the internal directory.
To generate the code, run the following command:
make generate
Run Server
go run main.go
Run Client
go run cmd/api/main.go
This will generate the necessary Go code for the protobuf files and the gRPC-Gateway files.
Once you've started both the gRPC and gRPC-Gateway servers using go run main.go
, you can send gRPC requests and receive responses using a gRPC client.
Here's an example of how to send a gRPC request and receive a response using the grpcurl
command-line tool:
- Install
grpcurl
by following the instructions in the official documentation. - Open a new terminal window or tab and run the following command to send a gRPC request to the
SayHello
RPC:
grpcurl -plaintext -d '{"name": "Javier"}' localhost:8080 helloworld.v1.GreeterService/SayHello
This sends a gRPC request to the SayHello
RPC with the name "Rajiv" as a request parameter.
- You should receive a response that looks like this:
{
"message": "Hello, Javier!"
}
This is the response message returned by the SayHello
RPC.
Once you've started both the gRPC and gRPC-Gateway servers using go run main.go
, you can send REST requests and receive responses using a tool like curl
.
Here's an example of how to send a REST request and receive a response using curl
:
- Open a new terminal window or tab and run the following command to send a REST request to the
/v1/helloworld
endpoint:
curl -X POST http://localhost:8081/v1/helloworld -H "Content-Type: application/json" -d '{"name": "Rajiv"}'
This sends a POST
request to the /v1/helloworld
endpoint with a JSON payload containing the name "Rajiv".
- You should receive a response that looks like this:
{
"message": "Hello, Rajiv!"
}