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server.go
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server.go
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package main
import (
"fmt"
"net/http"
"github.com/caarlos0/env/v7"
"github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware"
)
type Greeting struct {
Prefix string `env:"GREETING_PREFIX" envDefault:"Hello"`
Name string `query:"name"`
Message string
}
func main() {
e := echo.New()
e.Use(middleware.Logger())
e.Use(middleware.Recover())
e.GET("/", sayHello)
e.Logger.Fatal(e.Start(":8080"))
}
func sayHello(c echo.Context) error {
var greeting Greeting
err := env.Parse(&greeting)
if err != nil {
return err
}
err = c.Bind(&greeting)
if err != nil {
return err
}
if greeting.Name == "" {
greeting.Name = "Anonymous"
}
greeting.Message = fmt.Sprintf("%s,%s", greeting.Prefix, greeting.Name)
return c.JSON(http.StatusOK, greeting)
}