Example
package main
import (
"fmt"
"net/http"
"os"
"text/template"
)
var requestTemplate string = `
{{range $i, $url := .URLs}}
{{ $url }} {{(status_code $url)}}
{{ end }}`
type Requests struct {
URLs []string
}
func main() {
var fns = template.FuncMap{
"status_code": func(x string) int {
resp, err := http.Head(x)
if err != nil {
return -1
}
return resp.StatusCode
},
}
req := new(Requests)
req.URLs = []string{"http://godoc.org", "http://stackoverflow.com", "http://linux.org"}
tmpl := template.Must(template.New("getBatch").Funcs(fns).Parse(requestTemplate))
err := tmpl.Execute(os.Stdout, req)
if err != nil {
fmt.Println(err)
}
}
Here we use our defined function status_code to get status code of web page right from template.
Output:
http://godoc.org 200
http://stackoverflow.com 200
http://linux.org 200
