74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
import logging
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class MediaHandler:
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"""
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Abstract class to manage media handlers that can be streamed over the HTTP
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server through the `/media` endpoint.
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"""
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prefix_handlers = []
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def __init__(self, source, filename=None,
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mime_type='application/octet-stream', name=None, url=None,
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subtitles=None):
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matched_handlers = [hndl for hndl in self.prefix_handlers
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if source.startswith(hndl)]
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if not matched_handlers:
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raise AttributeError(('No matched handlers found for source "{}" ' +
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'through {}. Supported handlers: {}').format(
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source, self.__class__.__name__,
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self.prefix_handlers))
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self.name = name
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self.path = None
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self.filename = filename
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self.source = source
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self.url = url
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self.mime_type = mime_type
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self.subtitles = subtitles
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self.content_length = 0
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self._matched_handler = matched_handlers[0]
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@classmethod
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def build(cls, source, *args, **kwargs):
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errors = {}
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for hndl_class in supported_handlers:
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try:
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return hndl_class(source, *args, **kwargs)
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except Exception as e:
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logging.exception(e)
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errors[hndl_class.__name__] = str(e)
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raise AttributeError(('The source {} has no handlers associated. ' +
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'Errors: {}').format(source, errors))
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def get_data(self, from_bytes=None, to_bytes=None, chunk_size=None):
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raise NotImplementedError()
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def set_subtitles(self, subtitles_file):
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self.subtitles = subtitles_file
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def remove_subtitles(self):
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self.subtitles = None
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def __iter__(self):
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for attr in ['name', 'source', 'mime_type', 'url', 'subtitles',
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'prefix_handlers', 'media_id']:
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if hasattr(self, attr):
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yield attr, getattr(self, attr)
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from .file import FileHandler
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__all__ = ['MediaHandler', 'FileHandler']
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supported_handlers = [eval(hndl) for hndl in __all__
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if hndl != MediaHandler.__name__]
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# vim:sw=4:ts=4:et:
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