import importlib
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from os import path, listdir
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from app.plugins import logger
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from .platform_extension import PlatformExtension
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platforms = None
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def get_all_platforms():
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# Cache platforms search
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global platforms
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if platforms == None:
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platforms = read_platform_from_files()
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return platforms
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def get_platform_by_name(platform_name):
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platforms = get_all_platforms()
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for platform in platforms:
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if platform.name == platform_name:
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return platform
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return None
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def get_all_extended_platforms():
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return [platform for platform in get_all_platforms() if isinstance(platform, PlatformExtension)]
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def read_platform_from_files():
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platforms_path = get_platforms_path()
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platforms = []
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for platform_script in [platform for platform in listdir(platforms_path) if path.isfile(path.join(platforms_path, platform))]:
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# Each python script must have a class called Platform
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# Instantiate the platform
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try:
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module_path = "coreplugins.cloudimport.platforms.{}".format(path.splitext(platform_script)[0])
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module = importlib.import_module(module_path)
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platform = (getattr(module, "Platform"))()
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platforms.append(platform)
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except Exception as e:
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logger.warning("Failed to instantiate platform {}: {}".format(platform_script, e))
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assert_all_platforms_are_called_differently(platforms)
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return platforms
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def assert_all_platforms_are_called_differently(platforms):
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platform_names = []
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for platform in platforms:
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if platform.name in platform_names:
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# ToDo: throw an error
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logger.warning('Found multiple platforms with the name {}. This will cause problems...'.format(platform.name))
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else:
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platform_names.append(platform.name)
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def get_platforms_path():
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current_path = path.dirname(path.realpath(__file__))
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return path.abspath(path.join(current_path, 'platforms'))
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