Revert UUID purge

main.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/netip"
 
+	"github.com/google/uuid"
 	"github.com/thefeli73/polemos/mtdaws"
 	"github.com/thefeli73/polemos/state"
 )
@@ -72,7 +73,9 @@ func indexInstance(config state.Config, cloudID string, serviceIP netip.Addr) (s
 			break;
 		}
 	}
+	u := uuid.New()
 	newService := state.Service{
+		ID: state.CustomUUID(u),
 		CloudID: cloudID,
 		ServiceIP: serviceIP}
 	return newService, found

state/config.go

@@ -6,6 +6,7 @@ import (
 	"net/netip"
 	"os"
 
+	"github.com/google/uuid"
 	"gopkg.in/yaml.v3"
 )
 
@@ -21,6 +22,7 @@ type mtdconf struct {
 
 // Service contains all necessary information about a service to identify it in the cloud as well as configuring a proxy for it
 type Service struct {
+    ID              CustomUUID  `yaml:"id"`
     CloudID         string      `yaml:"cloud_id"`
     EntryIP         netip.Addr  `yaml:"entry_ip"`
     EntryPort       uint16      `yaml:"entry_port"`
@@ -28,11 +30,29 @@ type Service struct {
     ServicePort     uint16      `yaml:"service_port"`
 }
 
+// CustomUUID is an alias for uuid.UUID to enable custom unmarshal function
+type CustomUUID uuid.UUID
+
 type aws struct {
     Regions         []string    `yaml:"regions"`
     CredentialsPath string      `yaml:"credentials_path"`
 }
 
+// UnmarshalYAML parses uuid in yaml to CustomUUID type
+func (u *CustomUUID) UnmarshalYAML(value *yaml.Node) error {
+	id, err := uuid.Parse(value.Value)
+	if err != nil {
+		return err
+	}
+	*u = CustomUUID(id)
+	return nil
+}
+
+// MarshalYAML parses CustomUUID type to uuid string for yaml 
+func (u CustomUUID) MarshalYAML() (interface{}, error) {
+	return uuid.UUID(u).String(), nil
+}
+
 // LoadConf loads config from a yaml file
 func LoadConf(filename string) (Config) {
     var config Config