Build API

Create greet service

$ cd ~/go-zero-demo
$ go mod init go-zero-demo
$ goctl api new greet
Done.

Take a look at the structure of the greet service

$ cd greet
$ tree

.
├── etc
│   └── greet-api.yaml
├── greet.api
├── greet.go
└── internal
    ├── config
    │   └── config.go
    ├── handler
    │   ├── greethandler.go
    │   └── routes.go
    ├── logic
    │   └── greetlogic.go
    ├── svc
    │   └── servicecontext.go
    └── types
        └── types.go

As you can see from the above directory structure, the greet service is small, but it has all the "guts". Next we can write the business code in greetlogic.go.

Writing logic

$ vim ~/go-zero-demo/greet/internal/logic/greetlogic.go 

func (l *GreetLogic) Greet(req types.Request) (*types.Response, error) {
    return &types.Response{
        Message: "Hello go-zero",
    }, nil
}

Start and access the service

• Start-up services

$ cd ~/go-zero-demo/greet
$ go run greet.go -f etc/greet-api.yaml

Starting server at 0.0.0.0:8888...

• Access services

$ curl -i -X GET \
  http://localhost:8888/from/you

HTTP/1.1 200 OK
Content-Type: application/json
Date: Sun, 07 Feb 2021 04:31:25 GMT
Content-Length: 27

{"message":"Hello go-zero"}

Source Code

greet source code