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default options from env vars

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Nazar Kanaev 2021-05-03 10:16:14 +01:00
parent 92c6aac49e
commit ff39fbff70
1 changed files with 14 additions and 6 deletions
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20
src/main.go
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@ -17,18 +17,26 @@ import (
var Version string = "0.0" var Version string = "0.0"
var GitHash string = "unknown" var GitHash string = "unknown"
func opt(envVar, defaultValue string) string {
value := os.Getenv(envVar)
if value != "" {
return value
}
return defaultValue
}
func main() { func main() {
log.SetOutput(os.Stdout) log.SetOutput(os.Stdout)
log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile) log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)
var addr, db, authfile, certfile, keyfile, basepath string var addr, db, authfile, certfile, keyfile, basepath string
var ver, open bool var ver, open bool
flag.StringVar(&addr, "addr", "127.0.0.1:7070", "address to run server on") flag.StringVar(&addr, "addr", opt("YARR_ADDR", "127.0.0.1:7070"), "address to run server on")
flag.StringVar(&authfile, "auth-file", "", "path to a file containing username:password") flag.StringVar(&authfile, "auth-file", opt("YARR_AUTH_FILE", ""), "path to a file containing username:password")
flag.StringVar(&basepath, "base", "", "base path of the service url") flag.StringVar(&basepath, "base", opt("YARR_BASE", ""), "base path of the service url")
flag.StringVar(&certfile, "cert-file", "", "path to cert file for https") flag.StringVar(&certfile, "cert-file", opt("YARR_CERT_FILE", ""), "path to cert file for https")
flag.StringVar(&keyfile, "key-file", "", "path to key file for https") flag.StringVar(&keyfile, "key-file", opt("YARR_KEY_FILE", ""), "path to key file for https")
flag.StringVar(&db, "db", "", "storage file path") flag.StringVar(&db, "db", opt("YARR_DB", ""), "storage file path")
flag.BoolVar(&ver, "version", false, "print application version") flag.BoolVar(&ver, "version", false, "print application version")
flag.BoolVar(&open, "open", false, "open the server in browser") flag.BoolVar(&open, "open", false, "open the server in browser")
flag.Parse() flag.Parse()