Source code for anomalib.utils.cli.cli

"""Anomalib CLI."""

# Copyright (C) 2022 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

import logging
import os
from datetime import datetime
from importlib import import_module
from pathlib import Path
from typing import Any, Callable, Dict, Optional, Type, Union

from omegaconf.omegaconf import OmegaConf
from pytorch_lightning import LightningDataModule, LightningModule, Trainer
from pytorch_lightning.utilities.cli import (
    LightningArgumentParser,
    LightningCLI,
    SaveConfigCallback,
)

from anomalib.utils.callbacks import (
    CdfNormalizationCallback,
    LoadModelCallback,
    MetricsConfigurationCallback,
    MinMaxNormalizationCallback,
    ModelCheckpoint,
    TilerConfigurationCallback,
    TimerCallback,
    VisualizerCallback,
)
from anomalib.utils.loggers import configure_logger

[docs]logger = logging.getLogger("anomalib.cli")


[docs]class AnomalibCLI(LightningCLI):
    """Implementation of a fully configurable CLI tool for anomalib.

    The advantage of this tool is its flexibility to configure the pipeline
    from both the CLI and a configuration file (.yaml or .json). It is even
    possible to use both the CLI and a configuration file simultaneously.
    For more details, the reader could refer to PyTorch Lightning CLI documentation.
    """

    def __init__(  # pylint: disable=too-many-function-args
        self,
        model_class: Optional[Union[Type[LightningModule], Callable[..., LightningModule]]] = None,
        datamodule_class: Optional[Union[Type[LightningDataModule], Callable[..., LightningDataModule]]] = None,
        save_config_callback: Optional[Type[SaveConfigCallback]] = SaveConfigCallback,
        save_config_filename: str = "config.yaml",
        save_config_overwrite: bool = False,
        save_config_multifile: bool = False,
        trainer_class: Union[Type[Trainer], Callable[..., Trainer]] = Trainer,
        trainer_defaults: Optional[Dict[str, Any]] = None,
        seed_everything_default: Optional[int] = None,
        description: str = "Anomalib trainer command line tool",
        env_prefix: str = "Anomalib",
        env_parse: bool = False,
        parser_kwargs: Optional[Union[Dict[str, Any], Dict[str, Dict[str, Any]]]] = None,
        subclass_mode_model: bool = False,
        subclass_mode_data: bool = False,
        run: bool = True,
        auto_registry: bool = True,
    ) -> None:
        super().__init__(
            model_class,
            datamodule_class,
            save_config_callback,
            save_config_filename,
            save_config_overwrite,
            save_config_multifile,
            trainer_class,
            trainer_defaults,
            seed_everything_default,
            description,
            env_prefix,
            env_parse,
            parser_kwargs,
            subclass_mode_model,
            subclass_mode_data,
            run,
            auto_registry,
        )

[docs]    def add_arguments_to_parser(self, parser: LightningArgumentParser) -> None:
        """Add default arguments.

        Args:
            parser (LightningArgumentParser): Lightning Argument Parser.
        """
        # TODO: https://github.com/openvinotoolkit/anomalib/issues/19
        # TODO: https://github.com/openvinotoolkit/anomalib/issues/20
        parser.add_argument("--openvino", type=bool, default=False, help="Export to ONNX and OpenVINO IR format.")
        parser.add_argument("--nncf", type=str, help="Path to NNCF config to enable quantized training.")

        # ADD CUSTOM CALLBACKS TO CONFIG
        # NOTE: MyPy gives the following error:
        # Argument 1 to "add_lightning_class_args" of "LightningArgumentParser"
        # has incompatible type "Type[TilerCallback]"; expected "Union[Type[Trainer],
        # Type[LightningModule], Type[LightningDataModule]]"  [arg-type]
        parser.add_lightning_class_args(TilerConfigurationCallback, "tiling")  # type: ignore
        parser.set_defaults({"tiling.enable": False})

        # TODO: Assign these default values within the MetricsConfigurationCallback
        #   - https://github.com/openvinotoolkit/anomalib/issues/384
        parser.add_lightning_class_args(MetricsConfigurationCallback, "metrics")  # type: ignore
        parser.set_defaults(
            {
                "metrics.adaptive_threshold": True,
                "metrics.default_image_threshold": None,
                "metrics.default_pixel_threshold": None,
                "metrics.image_metric_names": ["F1Score", "AUROC"],
                "metrics.pixel_metric_names": ["F1Score", "AUROC"],
                "metrics.normalization_method": "min_max",
            }
        )

        parser.add_lightning_class_args(VisualizerCallback, "visualization")  # type: ignore
        parser.set_defaults(
            {
                "visualization.mode": "full",
                "visualization.task": "segmentation",
                "visualization.image_save_path": "",
                "visualization.save_images": False,
                "visualization.show_images": False,
                "visualization.log_images": False,
            }
        )

[docs]    def __set_default_root_dir(self) -> None:
        """Sets the default root directory depending on the subcommand type. <train, fit, predict, tune.>."""
        # Get configs.
        subcommand = self.config["subcommand"]
        config = self.config[subcommand]

        # If `resume_from_checkpoint` is not specified, it means that the project has not been created before.
        # Therefore, we need to create the project directory first.
        if config.trainer.resume_from_checkpoint is None:
            root_dir = config.trainer.default_root_dir if config.trainer.default_root_dir else "./results"
            model_name = config.model.class_path.split(".")[-1].lower()
            data_name = config.data.class_path.split(".")[-1].lower()
            category = config.data.init_args.category if config.data.init_args.keys() else ""
            time_stamp = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
            default_root_dir = os.path.join(root_dir, model_name, data_name, category, time_stamp)

        # Otherwise, the assumption is that the project directory has alrady been created.
        else:
            # By default, train subcommand saves the weights to
            #   ./results/<model>/<data>/time_stamp/weights/model.ckpt.
            # For this reason, we set the project directory to the parent directory
            #   that is two-level up.
            default_root_dir = str(Path(config.trainer.resume_from_checkpoint).parent.parent)

        if "image_save_path" not in config.visualization.keys() or config.visualization.image_save_path is None:
            self.config[subcommand].visualization.image_save_path = config.project.path
        self.config[subcommand].trainer.default_root_dir = default_root_dir

[docs]    def __set_callbacks(self) -> None:
        """Sets the default callbacks used within the pipeline."""
        subcommand = self.config["subcommand"]
        config = self.config[subcommand]

        callbacks = []

        # Model Checkpoint.
        monitor = None
        mode = "max"
        if config.trainer.callbacks is not None:
            # If trainer has callbacks defined from the config file, they have the
            # following format:
            # [{'class_path': 'pytorch_lightning.ca...lyStopping', 'init_args': {...}}]
            callbacks = config.trainer.callbacks

            # Convert to the following format to get `monitor` and `mode` variables
            # {'EarlyStopping': {'monitor': 'pixel_AUROC', 'mode': 'max', ...}}
            callback_args = {c["class_path"].split(".")[-1]: c["init_args"] for c in callbacks}
            if "EarlyStopping" in callback_args:
                monitor = callback_args["EarlyStopping"]["monitor"]
                mode = callback_args["EarlyStopping"]["mode"]

        checkpoint = ModelCheckpoint(
            dirpath=os.path.join(config.trainer.default_root_dir, "weights"),
            filename="model",
            monitor=monitor,
            mode=mode,
            auto_insert_metric_name=False,
        )
        callbacks.append(checkpoint)

        # LoadModel from Checkpoint.
        if config.trainer.resume_from_checkpoint:
            load_model = LoadModelCallback(config.trainer.resume_from_checkpoint)
            callbacks.append(load_model)

        # Add timing to the pipeline.
        callbacks.append(TimerCallback())

        #  TODO: This could be set in PostProcessingConfiguration callback
        #   - https://github.com/openvinotoolkit/anomalib/issues/384
        # Normalization.
        normalization = config.metrics.normalization_method
        if normalization:
            if normalization == "min_max":
                callbacks.append(MinMaxNormalizationCallback())
            elif normalization == "cdf":
                callbacks.append(CdfNormalizationCallback())
            else:
                raise ValueError(
                    f"Unknown normalization type {normalization}. \n" "Available types are either None, min_max or cdf"
                )

        # TODO: https://github.com/openvinotoolkit/anomalib/issues/19
        if config.openvino and config.nncf:
            raise ValueError("OpenVINO and NNCF cannot be set simultaneously.")

        # Export to OpenVINO
        if config.openvino:
            from anomalib.utils.callbacks.openvino import (  # pylint: disable=import-outside-toplevel
                OpenVINOCallback,
            )

            callbacks.append(
                OpenVINOCallback(
                    input_size=config.data.init_args.image_size,
                    dirpath=os.path.join(config.trainer.default_root_dir, "compressed"),
                    filename="model",
                )
            )
        if config.nncf:
            if os.path.isfile(config.nncf) and config.nncf.endswith(".yaml"):
                nncf_module = import_module("anomalib.core.callbacks.nncf_callback")
                nncf_callback = getattr(nncf_module, "NNCFCallback")
                callbacks.append(
                    nncf_callback(
                        config=OmegaConf.load(config.nncf),
                        dirpath=os.path.join(config.trainer.default_root_dir, "compressed"),
                        filename="model",
                    )
                )
            else:
                raise ValueError(f"--nncf expects a path to nncf config which is a yaml file, but got {config.nncf}")

        self.config[subcommand].trainer.callbacks = callbacks

[docs]    def before_instantiate_classes(self) -> None:
        """Modify the configuration to properly instantiate classes."""
        self.__set_default_root_dir()
        self.__set_callbacks()
        print("done.")


[docs]def main() -> None:
    """Trainer via Anomalib CLI."""
    configure_logger()
    AnomalibCLI()


if __name__ == "__main__":
    main()