35 lines
1.2 KiB
Go
35 lines
1.2 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
|
|
/*
|
|
Tips: The important thing to point out here is that healthcheckHandler is implemented as a method
|
|
on our application struct. This is an effective and idiomatic way to make dependencies available
|
|
to our handlers without resorting to global variables or closures - any dependency that the
|
|
healthcheckHandler needs can simply be included as a field in the application struct when we
|
|
initialize it in main()
|
|
*/
|
|
func (app *application) healthcheckHandler(w http.ResponseWriter, r *http.Request) {
|
|
/*
|
|
Create a fixed-format JSON response from a string. Notice how we're using a raw
|
|
string literal (enclosed with backticks) so that we can include double-quote
|
|
characters in the JSON without needing to espace them? We also use the %q verb to
|
|
wrap the interpolated values in double-quotes.
|
|
*/
|
|
js := `{"status": "available", "environment": %q, "version": %q}`
|
|
js = fmt.Sprintf(js, app.config.env, version)
|
|
|
|
/*
|
|
Set the "Content-Type: application/json" header on the response. If you forget to
|
|
this, Go will default to sending a "Content-Type: text/plain; charset=utf-8"
|
|
header instead.
|
|
*/
|
|
w.Header().Set("Content-Type", "application/json")
|
|
|
|
// Write the JSON as the HTTP response body.
|
|
w.Write([]byte(js))
|
|
}
|