macaroon and cert can be provided as files

README.md

@@ -33,8 +33,10 @@ vim .env # edit your config
 + `JWT_ACCESS_EXPIRY`: How long the access tokens should be valid (in seconds, default 2 days)
 + `JWT_REFRESH_EXPIRY`: How long the refresh tokens should be valid (in seconds, default 7 days)
 + `LND_ADDRESS`: LND gRPC address (with port) (e.g. `localhost:10009`)
-+ `LND_MACAROON_HEX`: LND macaroon (hex-encoded `admin.macaroon`)
-+ `LND_CERT_HEX`: LND certificate (hex-encoded `tls.cert`)
++ `LND_MACAROON_HEX`: LND macaroon (hex-encoded contents of `admin.macaroon` or `lndhub.macaroon`, see below)
++ `LND_MACAROON_FILE`: LND macaroon (provided as path on a filesystem)
++ `LND_CERT_HEX`: LND certificate (hex-encoded contents of `tls.cert`)
++ `LND_CERT_FILE`: LND certificate (provided as path on a filesystem)
 + `CUSTOM_NAME`: Name used to overwrite the node alias in the getInfo call
 + `LOG_FILE_PATH`: (optional) By default all logs are written to STDOUT. If you want to log to a file provide the log file path here
 + `SENTRY_DSN`: (optional) Sentry DSN for exception tracking
@@ -68,6 +70,13 @@ Or you bake a new macaroon with the following permissions and use that instead:
 lncli bakemacaroon info:read invoices:read invoices:write offchain:read offchain:write
 ```
 
+If you want to use a macaroon stored on a filesystem, you either set `LND_MACAROON_FILE` to a path pointing to `admin.macaroon`
+or use the following command to generate the `lndhub.macaroon` and setting the variable to path of that file.
+
+```
+lncli bakemacaroon --save_to=lndhub.macaroon info:read invoices:read invoices:write offchain:read offchain:write
+```
+
 ## Developing
 
 ```shell

lib/service/config.go

@@ -13,7 +13,9 @@ type Config struct {
 	JWTRefreshTokenExpiry int    `envconfig:"JWT_REFRESH_EXPIRY" default:"604800"` // in seconds, default 7 days
 	JWTAccessTokenExpiry  int    `envconfig:"JWT_ACCESS_EXPIRY" default:"172800"`  // in seconds, default 2 days
 	LNDAddress            string `envconfig:"LND_ADDRESS" required:"true"`
-	LNDMacaroonHex        string `envconfig:"LND_MACAROON_HEX" required:"true"`
+	LNDMacaroonFile       string `envconfig:"LND_MACAROON_FILE"`
+	LNDCertFile           string `envconfig:"LND_CERT_FILE"`
+	LNDMacaroonHex        string `envconfig:"LND_MACAROON_HEX"`
 	LNDCertHex            string `envconfig:"LND_CERT_HEX"`
 	CustomName            string `envconfig:"CUSTOM_NAME"`
 	Host                  string `envconfig:"HOST" default:"localhost:3000"`

main.go

@@ -123,9 +123,11 @@ func main() {
 
 	// Init new LND client
 	lndClient, err := lnd.NewLNDclient(lnd.LNDoptions{
-		Address:     c.LNDAddress,
-		MacaroonHex: c.LNDMacaroonHex,
-		CertHex:     c.LNDCertHex,
+		Address:      c.LNDAddress,
+		MacaroonFile: c.LNDMacaroonFile,
+		MacaroonHex:  c.LNDMacaroonHex,
+		CertFile:     c.LNDCertFile,
+		CertHex:      c.LNDCertHex,
 	})
 	if err != nil {
 		e.Logger.Fatalf("Error initializing the LND connection: %v", err)