allow the model record migrate script to update existing model records

invokeai/backend/model_manager/migrate_to_db.py

@@ -2,6 +2,7 @@
 """Migrate from the InvokeAI v2 models.yaml format to the v3 sqlite format."""
 
 from hashlib import sha1
+from logging import Logger
 
 from omegaconf import DictConfig, OmegaConf
 from pydantic import TypeAdapter
@@ -10,6 +11,7 @@ from invokeai.app.services.config import InvokeAIAppConfig
 from invokeai.app.services.model_records import (
     DuplicateModelException,
     ModelRecordServiceSQL,
+    UnknownModelException,
 )
 from invokeai.app.services.shared.sqlite.sqlite_database import SqliteDatabase
 from invokeai.backend.model_manager.config import (
@@ -38,9 +40,9 @@ class MigrateModelYamlToDb:
     """
 
     config: InvokeAIAppConfig
-    logger: InvokeAILogger
+    logger: Logger
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.config = InvokeAIAppConfig.get_config()
         self.config.parse_args()
         self.logger = InvokeAILogger.get_logger()
@@ -53,9 +55,11 @@ class MigrateModelYamlToDb:
     def get_yaml(self) -> DictConfig:
         """Fetch the models.yaml DictConfig for this installation."""
         yaml_path = self.config.model_conf_path
-        return OmegaConf.load(yaml_path)
+        omegaconf = OmegaConf.load(yaml_path)
+        assert isinstance(omegaconf,DictConfig)
+        return omegaconf
 
-    def migrate(self):
+    def migrate(self) -> None:
         """Do the migration from models.yaml to invokeai.db."""
         db = self.get_db()
         yaml = self.get_yaml()
@@ -69,6 +73,7 @@ class MigrateModelYamlToDb:
 
             base_type, model_type, model_name = str(model_key).split("/")
             hash = FastModelHash.hash(self.config.models_path / stanza.path)
+            assert isinstance(model_key, str)
             new_key = sha1(model_key.encode("utf-8")).hexdigest()
 
             stanza["base"] = BaseModelType(base_type)
@@ -77,12 +82,20 @@ class MigrateModelYamlToDb:
             stanza["original_hash"] = hash
             stanza["current_hash"] = hash
 
-            new_config = ModelsValidator.validate_python(stanza)
-            self.logger.info(f"Adding model {model_name} with key {model_key}")
+            new_config: AnyModelConfig = ModelsValidator.validate_python(stanza)  # type: ignore # see https://github.com/pydantic/pydantic/discussions/7094
+
             try:
-                db.add_model(new_key, new_config)
+                if original_record := db.search_by_path(stanza.path):
+                    key = original_record[0].key
+                    self.logger.info(f"Updating model {model_name} with information from models.yaml using key {key}")
+                    db.update_model(key, new_config)
+                else:
+                    self.logger.info(f"Adding model {model_name} with key {model_key}")
+                    db.add_model(new_key, new_config)
             except DuplicateModelException:
                 self.logger.warning(f"Model {model_name} is already in the database")
+            except UnknownModelException:
+                self.logger.warning(f"Model at {stanza.path} could not be found in database")
 
 
 def main():