frp/pkg/config/value.go

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package config
import (
"bytes"
"io/ioutil"
"os"
"strings"
"text/template"
)
var (
glbEnvs map[string]string
)
func init() {
glbEnvs = make(map[string]string)
envs := os.Environ()
for _, env := range envs {
kv := strings.Split(env, "=")
if len(kv) != 2 {
continue
}
glbEnvs[kv[0]] = kv[1]
}
}
type Values struct {
Envs map[string]string // environment vars
}
func GetValues() *Values {
return &Values{
Envs: glbEnvs,
}
}
func RenderContent(in string) (out string, err error) {
tmpl, errRet := template.New("frp").Parse(in)
if errRet != nil {
err = errRet
return
}
buffer := bytes.NewBufferString("")
v := GetValues()
err = tmpl.Execute(buffer, v)
if err != nil {
return
}
out = buffer.String()
return
}
func GetRenderedConfFromFile(path string) (out string, err error) {
var b []byte
b, err = ioutil.ReadFile(path)
if err != nil {
return
}
content := string(b)
out, err = RenderContent(content)
return
}