feat: use env variable for setting a default tailnet id when using a system admin key

internal/config/funcs.go

@@ -25,6 +25,18 @@ func GetString(key, defaultValue string) string {
 	return defaultValue
 }
 
+func GetUint64(key string, defaultValue uint64) uint64 {
+	v := os.Getenv(key)
+	if v != "" {
+		vi, err := strconv.ParseUint(v, 10, 64)
+		if err != nil {
+			return defaultValue
+		}
+		return vi
+	}
+	return defaultValue
+}
+
 func validatePublicAddr(addr string) (*url.URL, string, int, error) {
 	scheme := "https"
 

pkg/client/ionscale/auth.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"github.com/99designs/keyring"
+	"github.com/jsiebens/ionscale/internal/config"
 	"github.com/jsiebens/ionscale/internal/key"
 	"github.com/jsiebens/ionscale/internal/token"
 )
@@ -21,7 +22,8 @@ func LoadClientAuth(addr string, systemAdminKey string) (ClientAuth, error) {
 		if err != nil {
 			return nil, fmt.Errorf("invalid system admin key")
 		}
-		return systemAdminTokenSession{key: *k}, nil
+		tid := config.GetUint64("IONSCALE_SYSTEM_ADMIN_DEFAULT_TAILNET_ID", 0)
+		return systemAdminTokenSession{key: *k, tid: tid}, nil
 	}
 
 	ring, err := openKeyring()
@@ -88,6 +90,7 @@ func (m defaultSession) TailnetID() uint64 {
 
 type systemAdminTokenSession struct {
 	key key.ServerPrivate
+	tid uint64
 }
 
 func (m systemAdminTokenSession) GetToken() (string, error) {
@@ -95,7 +98,7 @@ func (m systemAdminTokenSession) GetToken() (string, error) {
 }
 
 func (m systemAdminTokenSession) TailnetID() uint64 {
-	return 0
+	return m.tid
 }
 
 type Anonymous struct {