mirror of
https://github.com/invoke-ai/InvokeAI
synced 2024-08-30 20:32:17 +00:00
68 lines
2.9 KiB
Python
68 lines
2.9 KiB
Python
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import contextlib
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from pathlib import Path
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from typing import Optional, Union
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import pytest
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import torch
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from invokeai.app.services.config.invokeai_config import InvokeAIAppConfig
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from invokeai.backend.install.model_install_backend import ModelInstall
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from invokeai.backend.model_management.model_manager import ModelInfo
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from invokeai.backend.model_management.models.base import BaseModelType, ModelNotFoundException, ModelType, SubModelType
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@pytest.fixture(scope="session")
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def torch_device():
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return "cuda" if torch.cuda.is_available() else "cpu"
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@pytest.fixture(scope="module")
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def model_installer():
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"""A global ModelInstall pytest fixture to be used by many tests."""
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# HACK(ryand): InvokeAIAppConfig.get_config() returns a singleton config object. This can lead to weird interactions
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# between tests that need to alter the config. For example, some tests change the 'root' directory in the config,
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# which can cause `install_and_load_model(...)` to re-download the model unnecessarily. As a temporary workaround,
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# we pass a kwarg to get_config, which causes the config to be re-loaded. To fix this properly, we should stop using
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# a singleton.
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return ModelInstall(InvokeAIAppConfig.get_config(log_level="info"))
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def install_and_load_model(
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model_installer: ModelInstall,
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model_path_id_or_url: Union[str, Path],
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model_name: str,
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base_model: BaseModelType,
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model_type: ModelType,
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submodel_type: Optional[SubModelType] = None,
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) -> ModelInfo:
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"""Install a model if it is not already installed, then get the ModelInfo for that model.
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This is intended as a utility function for tests.
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Args:
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model_installer (ModelInstall): The model installer.
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model_path_id_or_url (Union[str, Path]): The path, HF ID, URL, etc. where the model can be installed from if it
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is not already installed.
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model_name (str): The model name, forwarded to ModelManager.get_model(...).
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base_model (BaseModelType): The base model, forwarded to ModelManager.get_model(...).
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model_type (ModelType): The model type, forwarded to ModelManager.get_model(...).
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submodel_type (Optional[SubModelType]): The submodel type, forwarded to ModelManager.get_model(...).
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Returns:
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ModelInfo
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"""
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# If the requested model is already installed, return its ModelInfo.
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with contextlib.suppress(ModelNotFoundException):
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return model_installer.mgr.get_model(model_name, base_model, model_type, submodel_type)
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# Install the requested model.
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model_installer.heuristic_import(model_path_id_or_url)
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try:
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return model_installer.mgr.get_model(model_name, base_model, model_type, submodel_type)
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except ModelNotFoundException as e:
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raise Exception(
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"Failed to get model info after installing it. There could be a mismatch between the requested model and"
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f" the installation id ('{model_path_id_or_url}'). Error: {e}"
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)
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