[Modular] Add single file support to Modular

src/diffusers/loaders/single_file_utils.py

@@ -387,6 +387,14 @@ def is_valid_url(url):
     return False
 
 
+def _validate_single_file_path(pretrained_model_name_or_path):
+    if os.path.isfile(pretrained_model_name_or_path):
+        return True
+
+    repo_id, weight_name = _extract_repo_id_and_weights_name(pretrained_model_name_or_path)
+    return bool(repo_id and weight_name)
+
+
 def _extract_repo_id_and_weights_name(pretrained_model_name_or_path):
     if not is_valid_url(pretrained_model_name_or_path):
         raise ValueError("Invalid `pretrained_model_name_or_path` provided. Please set it to a valid URL.")
@@ -398,7 +406,6 @@ def _extract_repo_id_and_weights_name(pretrained_model_name_or_path):
         pretrained_model_name_or_path = pretrained_model_name_or_path.replace(prefix, "")
     match = re.match(pattern, pretrained_model_name_or_path)
     if not match:
-        logger.warning("Unable to identify the repo_id and weights_name from the provided URL.")
         return repo_id, weights_name
 
     repo_id = f"{match.group(1)}/{match.group(2)}"

src/diffusers/modular_pipelines/modular_pipeline.py

@@ -366,7 +366,7 @@ def init_pipeline(
         collection: Optional[str] = None,
     ) -> "ModularPipeline":
         """
-        create a ModularPipeline, optionally accept modular_repo to load from hub.
+        create a ModularPipeline, optionally accept pretrained_model_name_or_path to load from hub.
         """
         pipeline_class_name = MODULAR_PIPELINE_MAPPING.get(self.model_name, ModularPipeline.__name__)
         diffusers_module = importlib.import_module("diffusers")
@@ -1582,7 +1582,7 @@ def __init__(
                         if name in self._component_specs and isinstance(value, (tuple, list)) and len(value) == 2:
                             library, class_name = value
                             component_spec_dict = {
-                                "repo": pretrained_model_name_or_path,
+                                "pretrained_model_name_or_path": pretrained_model_name_or_path,
                                 "subfolder": name,
                                 "type_hint": (library, class_name),
                             }
@@ -1639,7 +1639,7 @@ def from_pretrained(
             pretrained_model_name_or_path (`str` or `os.PathLike`, optional):
                 Path to a pretrained pipeline configuration. It will first try to load config from
                 `modular_model_index.json`, then fallback to `model_index.json` for compatibility with standard
-                non-modular repositories. If the repo does not contain any pipeline config, it will be set to None
+                non-modular repositories. If the pretrained_model_name_or_path does not contain any pipeline config, it will be set to None
                 during initialization.
             trust_remote_code (`bool`, optional):
                 Whether to trust remote code when loading the pipeline, need to be set to True if you want to create
@@ -1809,7 +1809,7 @@ def register_components(self, **kwargs):
                 library, class_name = None, None
 
             # extract the loading spec from the updated component spec that'll be used as part of modular_model_index.json config
-            # e.g. {"repo": "stabilityai/stable-diffusion-2-1",
+            # e.g. {"pretrained_model_name_or_path": "stabilityai/stable-diffusion-2-1",
             #       "type_hint": ("diffusers", "UNet2DConditionModel"),
             #       "subfolder": "unet",
             #       "variant": None,
@@ -2113,7 +2113,7 @@ def load_components(self, names: Optional[Union[List[str], str]] = None, **kwarg
             **kwargs: additional kwargs to be passed to `from_pretrained()`.Can be:
              - a single value to be applied to all components to be loaded, e.g. torch_dtype=torch.bfloat16
              - a dict, e.g. torch_dtype={"unet": torch.bfloat16, "default": torch.float32}
-             - if potentially override ComponentSpec if passed a different loading field in kwargs, e.g. `repo`,
+             - if potentially override ComponentSpec if passed a different loading field in kwargs, e.g. `pretrained_model_name_or_path`,
                `variant`, `revision`, etc.
         """
 
@@ -2377,10 +2377,10 @@ def _component_spec_to_dict(component_spec: ComponentSpec) -> Any:
           - "type_hint": Tuple[str, str]
               Library name and class name of the component. (e.g. ("diffusers", "UNet2DConditionModel"))
           - All loading fields defined by `component_spec.loading_fields()`, typically:
-              - "repo": Optional[str]
-                  The model repository (e.g., "stabilityai/stable-diffusion-xl").
+              - "pretrained_model_name_or_path": Optional[str]
+                  The model pretrained_model_name_or_pathsitory (e.g., "stabilityai/stable-diffusion-xl").
               - "subfolder": Optional[str]
-                  A subfolder within the repo where this component lives.
+                  A subfolder within the pretrained_model_name_or_path where this component lives.
               - "variant": Optional[str]
                   An optional variant identifier for the model.
               - "revision": Optional[str]
@@ -2397,11 +2397,11 @@ def _component_spec_to_dict(component_spec: ComponentSpec) -> Any:
         Example:
             >>> from diffusers.pipelines.modular_pipeline_utils import ComponentSpec >>> from diffusers import
             UNet2DConditionModel >>> spec = ComponentSpec(
-                ... name="unet", ... type_hint=UNet2DConditionModel, ... config=None, ... repo="path/to/repo", ...
+                ... name="unet", ... type_hint=UNet2DConditionModel, ... config=None, ... pretrained_model_name_or_path="path/to/repo", ...
                 subfolder="subfolder", ... variant=None, ... revision=None, ...
                 default_creation_method="from_pretrained",
             ... ) >>> ModularPipeline._component_spec_to_dict(spec) {
-                "type_hint": ("diffusers", "UNet2DConditionModel"), "repo": "path/to/repo", "subfolder": "subfolder",
+                "type_hint": ("diffusers", "UNet2DConditionModel"), "pretrained_model_name_or_path": "path/to/repo", "subfolder": "subfolder",
                 "variant": None, "revision": None,
             }
         """
@@ -2431,10 +2431,10 @@ def _dict_to_component_spec(
           - "type_hint": Tuple[str, str]
               Library name and class name of the component. (e.g. ("diffusers", "UNet2DConditionModel"))
           - All loading fields defined by `component_spec.loading_fields()`, typically:
-              - "repo": Optional[str]
+              - "pretrained_model_name_or_path": Optional[str]
                   The model repository (e.g., "stabilityai/stable-diffusion-xl").
               - "subfolder": Optional[str]
-                  A subfolder within the repo where this component lives.
+                  A subfolder within the pretrained_model_name_or_path where this component lives.
               - "variant": Optional[str]
                   An optional variant identifier for the model.
               - "revision": Optional[str]
@@ -2451,10 +2451,10 @@ def _dict_to_component_spec(
             ComponentSpec: A reconstructed ComponentSpec object.
 
         Example:
-            >>> spec_dict = { ... "type_hint": ("diffusers", "UNet2DConditionModel"), ... "repo":
+            >>> spec_dict = { ... "type_hint": ("diffusers", "UNet2DConditionModel"), ... "pretrained_model_name_or_path":
             "stabilityai/stable-diffusion-xl", ... "subfolder": "unet", ... "variant": None, ... "revision": None, ...
             } >>> ModularPipeline._dict_to_component_spec("unet", spec_dict) ComponentSpec(
-                name="unet", type_hint=UNet2DConditionModel, config=None, repo="stabilityai/stable-diffusion-xl",
+                name="unet", type_hint=UNet2DConditionModel, config=None, pretrained_model_name_or_path="stabilityai/stable-diffusion-xl",
                 subfolder="unet", variant=None, revision=None, default_creation_method="from_pretrained"
             )
         """

src/diffusers/modular_pipelines/modular_pipeline_utils.py

@@ -21,6 +21,7 @@
 import torch
 
 from ..configuration_utils import ConfigMixin, FrozenDict
+from ..loaders.single_file_utils import _validate_single_file_path
 from ..utils import is_torch_available, logging
 
 
@@ -80,10 +81,10 @@ class ComponentSpec:
         type_hint: Type of the component (e.g. UNet2DConditionModel)
         description: Optional description of the component
         config: Optional config dict for __init__ creation
-        repo: Optional repo path for from_pretrained creation
-        subfolder: Optional subfolder in repo
-        variant: Optional variant in repo
-        revision: Optional revision in repo
+        pretrained_model_name_or_path: Optional pretrained_model_name_or_path path for from_pretrained creation
+        subfolder: Optional subfolder in pretrained_model_name_or_path
+        variant: Optional variant in pretrained_model_name_or_path
+        revision: Optional revision in pretrained_model_name_or_path
         default_creation_method: Preferred creation method - "from_config" or "from_pretrained"
     """
 
@@ -92,7 +93,7 @@ class ComponentSpec:
     description: Optional[str] = None
     config: Optional[FrozenDict] = None
     # YiYi Notes: should we change it to pretrained_model_name_or_path for consistency? a bit long for a field name
-    repo: Optional[Union[str, List[str]]] = field(default=None, metadata={"loading": True})
+    pretrained_model_name_or_path: Optional[Union[str, List[str]]] = field(default=None, metadata={"loading": True})
     subfolder: Optional[str] = field(default="", metadata={"loading": True})
     variant: Optional[str] = field(default=None, metadata={"loading": True})
     revision: Optional[str] = field(default=None, metadata={"loading": True})
@@ -182,7 +183,7 @@ def loading_fields(cls) -> List[str]:
     @property
     def load_id(self) -> str:
         """
-        Unique identifier for this spec's pretrained load, composed of repo|subfolder|variant|revision (no empty
+        Unique identifier for this spec's pretrained load, composed of pretrained_model_name_or_path|subfolder|variant|revision (no empty
         segments).
         """
         if self.default_creation_method == "from_config":
@@ -197,12 +198,12 @@ def decode_load_id(cls, load_id: str) -> Dict[str, Optional[str]]:
         Decode a load_id string back into a dictionary of loading fields and values.
 
         Args:
-            load_id: The load_id string to decode, format: "repo|subfolder|variant|revision"
+            load_id: The load_id string to decode, format: "pretrained_model_name_or_path|subfolder|variant|revision"
                      where None values are represented as "null"
 
         Returns:
             Dict mapping loading field names to their values. e.g. {
-                "repo": "path/to/repo", "subfolder": "subfolder", "variant": "variant", "revision": "revision"
+                "pretrained_model_name_or_path": "path/to/repo", "subfolder": "subfolder", "variant": "variant", "revision": "revision"
             } If a segment value is "null", it's replaced with None. Returns None if load_id is "null" (indicating
             component not created with `load` method).
         """
@@ -260,33 +261,43 @@ def create(self, config: Optional[Union[FrozenDict, Dict[str, Any]]] = None, **k
     def load(self, **kwargs) -> Any:
         """Load component using from_pretrained."""
 
-        # select loading fields from kwargs passed from user: e.g. repo, subfolder, variant, revision, note the list could change
+        # select loading fields from kwargs passed from user: e.g. pretrained_model_name_or_path, subfolder, variant, revision, note the list could change
         passed_loading_kwargs = {key: kwargs.pop(key) for key in self.loading_fields() if key in kwargs}
         # merge loading field value in the spec with user passed values to create load_kwargs
         load_kwargs = {key: passed_loading_kwargs.get(key, getattr(self, key)) for key in self.loading_fields()}
-        # repo is a required argument for from_pretrained, a.k.a. pretrained_model_name_or_path
-        repo = load_kwargs.pop("repo", None)
-        if repo is None:
+        # pretrained_model_name_or_path is a required argument for from_pretrained, a.k.a. pretrained_model_name_or_path
+        pretrained_model_name_or_path = load_kwargs.pop("pretrained_model_name_or_path", None)
+        if pretrained_model_name_or_path is None:
             raise ValueError(
-                "`repo` info is required when using `load` method (you can directly set it in `repo` field of the ComponentSpec or pass it as an argument)"
+                "`pretrained_model_name_or_path` info is required when using `load` method (you can directly set it in `pretrained_model_name_or_path` field of the ComponentSpec or pass it as an argument)"
             )
+        is_single_file = _validate_single_file_path(pretrained_model_name_or_path)
+        if is_single_file and self.type_hint is None:
+            raise ValueError("type_hint is required when loading a single file model")
 
         if self.type_hint is None:
             try:
                 from diffusers import AutoModel
 
-                component = AutoModel.from_pretrained(repo, **load_kwargs, **kwargs)
+                component = AutoModel.from_pretrained(pretrained_model_name_or_path, **load_kwargs, **kwargs)
             except Exception as e:
                 raise ValueError(f"Unable to load {self.name} without `type_hint`: {e}")
             # update type_hint if AutoModel load successfully
             self.type_hint = component.__class__
         else:
+            # determine load method
+            load_method = (
+                getattr(self.type_hint, "from_single_file")
+                if is_single_file
+                else getattr(self.type_hint, "from_pretrained")
+            )
+
             try:
-                component = self.type_hint.from_pretrained(repo, **load_kwargs, **kwargs)
+                component = load_method(pretrained_model_name_or_path, **load_kwargs, **kwargs)
             except Exception as e:
                 raise ValueError(f"Unable to load {self.name} using load method: {e}")
 
-        self.repo = repo
+        self.pretrained_model_name_or_path = pretrained_model_name_or_path
         for k, v in load_kwargs.items():
             setattr(self, k, v)
         component._diffusers_load_id = self.load_id