assetmodel.py 7.68 KB
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# vim: set fileencoding=utf-8 :
###############################################################################
#                                                                             #
# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/           #
# Contact: beat.support@idiap.ch                                              #
#                                                                             #
# This file is part of the beat.editor module of the BEAT platform.           #
#                                                                             #
# Commercial License Usage                                                    #
# Licensees holding valid commercial BEAT licenses may use this file in       #
# accordance with the terms contained in a written agreement between you      #
# and Idiap. For further information contact tto@idiap.ch                     #
#                                                                             #
# Alternatively, this file may be used under the terms of the GNU Affero      #
# Public License version 3 as published by the Free Software and appearing    #
# in the file LICENSE.AGPL included in the packaging of this file.            #
# The BEAT platform is distributed in the hope that it will be useful, but    #
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY  #
# or FITNESS FOR A PARTICULAR PURPOSE.                                        #
#                                                                             #
# You should have received a copy of the GNU Affero Public License along      #
# with the BEAT platform. If not, see http://www.gnu.org/licenses/.           #
#                                                                             #
###############################################################################

import os

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from enum import Enum, unique
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from PyQt5.QtCore import pyqtSignal
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtCore import pyqtProperty
from PyQt5.QtCore import QStringListModel

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from beat.core.schema import validate

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from ..utils import dataformat_basetypes

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@unique
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class AssetType(Enum):
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    """All possible assets available on the BEAT platform"""

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    (
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        UNKNOWN,
        ALGORITHM,
        DATABASE,
        DATAFORMAT,
        EXPERIMENT,
        LIBRARY,
        PLOTTER,
        PLOTTERPARAMETERS,
        TOOLCHAIN,
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    ) = range(9)
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    @classmethod
    def path(cls, type_):
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        path = "unknown"
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        if type_ == cls.ALGORITHM:
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            path = "algorithms"
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        elif type_ == cls.DATABASE:
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            path = "databases"
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        elif type_ == cls.DATAFORMAT:
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            path = "dataformats"
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        elif type_ == cls.EXPERIMENT:
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            path = "experiments"
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        elif type_ == cls.LIBRARY:
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            path = "libraries"
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        elif type_ == cls.PLOTTER:
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            path = "plotters"
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        elif type_ == cls.PLOTTERPARAMETERS:
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            path = "plotterparameters"
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        elif type_ == cls.TOOLCHAIN:
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            path = "toolchains"

        return path

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    @classmethod
    def from_path(cls, path):
        if path == "algorithms":
            return cls.ALGORITHM
        elif path == "databases":
            return cls.DATABASE
        elif path == "dataformats":
            return cls.DATAFORMAT
        elif path == "experiments":
            return cls.EXPERIMENT
        elif path == "libraries":
            return cls.LIBRARY
        elif path == "plotters":
            return cls.PLOTTER
        elif path == "plotterparameters":
            return cls.PLOTTERPARAMETERS
        elif path == "toolchains":
            return cls.TOOLCHAIN
        else:
            raise RuntimeError("Unknown asset path {}".format(path))

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    def validate(self, data):
        if self == self.UNKNOWN:
            raise RuntimeError("Trying to validate unknown type")
        return validate(self.name.lower(), data)

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class AssetModel(QStringListModel):
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    """The asset model present a list of available asset from a given type"""

    assetTypeChanged = pyqtSignal(AssetType)
    prefixPathChanged = pyqtSignal(str)

    def __init__(self, parent=None):
        """Constructor"""

        super(QStringListModel, self).__init__(parent)

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        self.__prefix_path = None
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        self.__asset_type = AssetType.UNKNOWN
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    @pyqtSlot()
    def reload(self):
        """Loads the content regarding the asset property from the prefix"""

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        if not self.__prefix_path or self.__asset_type == AssetType.UNKNOWN:
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            return

        asset_folder = os.path.join(
            self.__prefix_path, AssetType.path(self.__asset_type)
        )
        asset_users = os.scandir(asset_folder)

        latest_assets_list = []
        for asset_user in asset_users:
            for asset_folder in os.scandir(asset_user):
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                if self.asset_type == AssetType.EXPERIMENT:
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                    for root, dirs, files in os.walk(asset_folder, topdown=False):
                        if dirs:
                            continue
                        anchor = "experiments/"
                        position = root.index(anchor) + len(anchor)
                        experiment_path = root[position:]
                        for json_file in [
                            file for file in files if file.endswith("json")
                        ]:
                            latest_assets_list.append(
                                "{experiment_path}/{name}".format(
                                    experiment_path=experiment_path,
                                    name=json_file.split(".")[0],
                                )
                            )
                else:
                    asset_items = os.scandir(asset_folder)
                    json_files = sorted(
                        [
                            item.name
                            for item in asset_items
                            if item.is_file() and item.name.endswith("json")
                        ]
                    )
                    if json_files:
                        latest_assets_list.append(
                            "{user}/{name}/{version}".format(
                                user=asset_user.name,
                                name=asset_folder.name,
                                version=json_files[-1].split(".")[0],
                            )
                        )

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        latest_assets_list = sorted(latest_assets_list)
        if self.asset_type == AssetType.DATAFORMAT:
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            latest_assets_list = dataformat_basetypes() + latest_assets_list
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        self.setStringList(latest_assets_list)
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    def assetType(self):
        """Returns the asset type of this model

        :return: Asset type of this model
        """

        return self.__asset_type

    def setAssetType(self, type_):
        """Set the asset type of this model

        :param AssetType type_: Asset type this model should show
        """

        if self.__asset_type == type_:
            return

        self.__asset_type = type_
        self.reload()
        self.assetTypeChanged.emit(type_)

    asset_type = pyqtProperty(
        AssetType, fget=assetType, fset=setAssetType, notify=assetTypeChanged
    )

    def prefixPath(self):
        """Returns the prefix path use by this model

        :return: the prefix path used
        """

        return self.__prefix_path

    def setPrefixPath(self, path):
        """Set the prefix path use by this model

        :param str path: Path to prefix
        """

        if self.__prefix_path == path:
            return

        self.__prefix_path = path
        self.reload()
        self.prefixPathChanged.emit(path)

    prefix_path = pyqtProperty(
        str, fget=prefixPath, fset=setPrefixPath, notify=prefixPathChanged
    )