214 lines
7.3 KiB
Python
214 lines
7.3 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import re
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import functools
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NEW_FORMAT_ID_RE = re.compile(r"^\d\d\d\d-\d\d-\d\d")
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def _wrap_in_base_path(func):
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"""Takes a function that returns a relative path and turns it into an
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absolute path based on the location of the primary media store
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"""
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@functools.wraps(func)
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def _wrapped(self, *args, **kwargs):
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path = func(self, *args, **kwargs)
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return os.path.join(self.base_path, path)
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return _wrapped
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class MediaFilePaths(object):
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"""Describes where files are stored on disk.
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Most of the functions have a `*_rel` variant which returns a file path that
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is relative to the base media store path. This is mainly used when we want
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to write to the backup media store (when one is configured)
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"""
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def __init__(self, primary_base_path):
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self.base_path = primary_base_path
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def default_thumbnail_rel(self, default_top_level, default_sub_type, width,
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height, content_type, method):
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s-%s" % (
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width, height, top_level_type, sub_type, method
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)
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return os.path.join(
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"default_thumbnails", default_top_level,
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default_sub_type, file_name
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)
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default_thumbnail = _wrap_in_base_path(default_thumbnail_rel)
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def local_media_filepath_rel(self, media_id):
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return os.path.join(
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"local_content",
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media_id[0:2], media_id[2:4], media_id[4:]
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)
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local_media_filepath = _wrap_in_base_path(local_media_filepath_rel)
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def local_media_thumbnail_rel(self, media_id, width, height, content_type,
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method):
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s-%s" % (
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width, height, top_level_type, sub_type, method
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)
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return os.path.join(
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"local_thumbnails",
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media_id[0:2], media_id[2:4], media_id[4:],
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file_name
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)
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local_media_thumbnail = _wrap_in_base_path(local_media_thumbnail_rel)
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def remote_media_filepath_rel(self, server_name, file_id):
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return os.path.join(
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"remote_content", server_name,
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file_id[0:2], file_id[2:4], file_id[4:]
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)
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remote_media_filepath = _wrap_in_base_path(remote_media_filepath_rel)
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def remote_media_thumbnail_rel(self, server_name, file_id, width, height,
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content_type, method):
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s" % (width, height, top_level_type, sub_type)
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return os.path.join(
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"remote_thumbnail", server_name,
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file_id[0:2], file_id[2:4], file_id[4:],
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file_name
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)
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remote_media_thumbnail = _wrap_in_base_path(remote_media_thumbnail_rel)
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def remote_media_thumbnail_dir(self, server_name, file_id):
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return os.path.join(
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self.base_path, "remote_thumbnail", server_name,
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file_id[0:2], file_id[2:4], file_id[4:],
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)
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def url_cache_filepath_rel(self, media_id):
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if NEW_FORMAT_ID_RE.match(media_id):
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# Media id is of the form <DATE><RANDOM_STRING>
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# E.g.: 2017-09-28-fsdRDt24DS234dsf
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return os.path.join(
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"url_cache",
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media_id[:10], media_id[11:]
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)
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else:
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return os.path.join(
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"url_cache",
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media_id[0:2], media_id[2:4], media_id[4:],
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)
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url_cache_filepath = _wrap_in_base_path(url_cache_filepath_rel)
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def url_cache_filepath_dirs_to_delete(self, media_id):
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"The dirs to try and remove if we delete the media_id file"
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if NEW_FORMAT_ID_RE.match(media_id):
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return [
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os.path.join(
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self.base_path, "url_cache",
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media_id[:10],
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),
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]
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else:
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return [
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os.path.join(
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self.base_path, "url_cache",
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media_id[0:2], media_id[2:4],
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),
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os.path.join(
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self.base_path, "url_cache",
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media_id[0:2],
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),
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]
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def url_cache_thumbnail_rel(self, media_id, width, height, content_type,
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method):
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# Media id is of the form <DATE><RANDOM_STRING>
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# E.g.: 2017-09-28-fsdRDt24DS234dsf
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s-%s" % (
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width, height, top_level_type, sub_type, method
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)
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if NEW_FORMAT_ID_RE.match(media_id):
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return os.path.join(
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"url_cache_thumbnails",
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media_id[:10], media_id[11:],
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file_name
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)
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else:
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return os.path.join(
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"url_cache_thumbnails",
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media_id[0:2], media_id[2:4], media_id[4:],
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file_name
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)
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url_cache_thumbnail = _wrap_in_base_path(url_cache_thumbnail_rel)
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def url_cache_thumbnail_directory(self, media_id):
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# Media id is of the form <DATE><RANDOM_STRING>
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# E.g.: 2017-09-28-fsdRDt24DS234dsf
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if NEW_FORMAT_ID_RE.match(media_id):
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return os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[:10], media_id[11:],
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)
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else:
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return os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[0:2], media_id[2:4], media_id[4:],
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)
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def url_cache_thumbnail_dirs_to_delete(self, media_id):
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"The dirs to try and remove if we delete the media_id thumbnails"
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# Media id is of the form <DATE><RANDOM_STRING>
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# E.g.: 2017-09-28-fsdRDt24DS234dsf
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if NEW_FORMAT_ID_RE.match(media_id):
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return [
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os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[:10], media_id[11:],
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),
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os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[:10],
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),
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]
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else:
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return [
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os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[0:2], media_id[2:4], media_id[4:],
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),
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os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[0:2], media_id[2:4],
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),
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os.path.join(
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self.base_path, "url_cache_thumbnails",
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media_id[0:2],
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),
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]
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