fix juanfont#1482, restore foregin keys, add constraints

CHANGELOG.md

@@ -34,7 +34,7 @@ State management has been improved [#1492](https://github.com/juanfont/headscale
 Use error group handling to ensure tests actually pass [#1535](https://github.com/juanfont/headscale/pull/1535) based on [#1460](https://github.com/juanfont/headscale/pull/1460)
 Fix hang on SIGTERM [#1492](https://github.com/juanfont/headscale/pull/1492) taken from [#1480](https://github.com/juanfont/headscale/pull/1480)
 Send logs to stderr by default [#1524](https://github.com/juanfont/headscale/pull/1524)
-
+Restore foreign keys and add constraints [#1562](https://github.com/juanfont/headscale/pull/1562)
 ## 0.22.3 (2023-05-12)
 
 ### Changes

hscontrol/db/db.go

@@ -98,6 +98,7 @@ func NewHeadscaleDatabase(
 	// node was registered.
 	_ = dbConn.Migrator().RenameColumn(&types.Node{}, "nickname", "given_name")
 
+	dbConn.Model(&types.Node{}).Where("auth_key_id = ?", 0).Update("auth_key_id", nil)
 	// If the MacNodehine table has a column for registered,
 	// find all occourences of "false" and drop them. Then
 	// remove the column.
@@ -273,8 +274,7 @@ func openDB(dbType, connectionAddr string, debug bool) (*gorm.DB, error) {
 		db, err := gorm.Open(
 			sqlite.Open(connectionAddr+"?_synchronous=1&_journal_mode=WAL"),
 			&gorm.Config{
-				DisableForeignKeyConstraintWhenMigrating: true,
-				Logger:                                   dbLogger,
+				Logger: dbLogger,
 			},
 		)
 
@@ -292,8 +292,7 @@ func openDB(dbType, connectionAddr string, debug bool) (*gorm.DB, error) {
 
 	case Postgres:
 		return gorm.Open(postgres.Open(connectionAddr), &gorm.Config{
-			DisableForeignKeyConstraintWhenMigrating: true,
-			Logger:                                   dbLogger,
+			Logger: dbLogger,
 		})
 	}
 

hscontrol/db/node.go

@@ -350,7 +350,7 @@ func (hsdb *HSDatabase) deleteNode(node *types.Node) error {
 	}
 
 	// Unscoped causes the node to be fully removed from the database.
-	if err := hsdb.db.Unscoped().Delete(&node).Error; err != nil {
+	if err := hsdb.db.Unscoped().Delete(&types.Node{}, node.ID).Error; err != nil {
 		return err
 	}
 

hscontrol/types/node.go

@@ -43,23 +43,23 @@ type Node struct {
 	// parts of headscale.
 	GivenName string `gorm:"type:varchar(63);unique_index"`
 	UserID    uint
-	User      User `gorm:"foreignKey:UserID"`
+	User      User `gorm:"constraint:OnDelete:CASCADE;"`
 
 	RegisterMethod string
 
 	ForcedTags StringList
 
 	// TODO(kradalby): This seems like irrelevant information?
 	AuthKeyID uint
-	AuthKey   *PreAuthKey
+	AuthKey   *PreAuthKey `gorm:"constraint:OnDelete:SET NULL;"`
 
 	LastSeen *time.Time
 	Expiry   *time.Time
 
 	HostInfo  HostInfo
 	Endpoints StringList
 
-	Routes []Route
+	Routes []Route `gorm:"constraint:OnDelete:CASCADE;"`
 
 	CreatedAt time.Time
 	UpdatedAt time.Time

hscontrol/types/preauth_key.go

@@ -14,11 +14,11 @@ type PreAuthKey struct {
 	ID        uint64 `gorm:"primary_key"`
 	Key       string
 	UserID    uint
-	User      User
+	User      User `gorm:"constraint:OnDelete:CASCADE;"`
 	Reusable  bool
-	Ephemeral bool `gorm:"default:false"`
-	Used      bool `gorm:"default:false"`
-	ACLTags   []PreAuthKeyACLTag
+	Ephemeral bool               `gorm:"default:false"`
+	Used      bool               `gorm:"default:false"`
+	ACLTags   []PreAuthKeyACLTag `gorm:"constraint:OnDelete:CASCADE;"`
 
 	CreatedAt  *time.Time
 	Expiration *time.Time