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URL cache files are short-lived and it does not make sense to offload them (eg. to the cloud) or back them up.
241 lines
8.4 KiB
Python
241 lines
8.4 KiB
Python
# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2020-2021 The Matrix.org Foundation C.I.C.
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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 functools
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import os
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import re
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from typing import Any, Callable, List
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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: Callable[..., str]) -> Callable[..., str]:
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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: "MediaFilePaths", *args: Any, **kwargs: Any) -> str:
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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:
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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: str):
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self.base_path = primary_base_path
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def default_thumbnail_rel(
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self,
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default_top_level: str,
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default_sub_type: str,
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width: int,
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height: int,
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content_type: str,
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method: str,
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) -> str:
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s-%s" % (width, height, top_level_type, sub_type, method)
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return os.path.join(
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"default_thumbnails", default_top_level, 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: str) -> str:
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return os.path.join("local_content", media_id[0:2], media_id[2:4], media_id[4:])
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local_media_filepath = _wrap_in_base_path(local_media_filepath_rel)
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def local_media_thumbnail_rel(
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self, media_id: str, width: int, height: int, content_type: str, method: str
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) -> str:
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s-%s" % (width, height, top_level_type, sub_type, method)
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return os.path.join(
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"local_thumbnails", media_id[0:2], media_id[2:4], media_id[4:], 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 local_media_thumbnail_dir(self, media_id: str) -> str:
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"""
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Retrieve the local store path of thumbnails of a given media_id
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Args:
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media_id: The media ID to query.
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Returns:
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Path of local_thumbnails from media_id
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"""
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return os.path.join(
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self.base_path,
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"local_thumbnails",
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media_id[0:2],
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media_id[2:4],
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media_id[4:],
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)
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def remote_media_filepath_rel(self, server_name: str, file_id: str) -> str:
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return os.path.join(
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"remote_content", server_name, 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(
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self,
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server_name: str,
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file_id: str,
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width: int,
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height: int,
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content_type: str,
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method: str,
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) -> str:
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top_level_type, sub_type = content_type.split("/")
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file_name = "%i-%i-%s-%s-%s" % (width, height, top_level_type, sub_type, method)
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return os.path.join(
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"remote_thumbnail",
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server_name,
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file_id[0:2],
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file_id[2:4],
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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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# Legacy path that was used to store thumbnails previously.
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# Should be removed after some time, when most of the thumbnails are stored
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# using the new path.
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def remote_media_thumbnail_rel_legacy(
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self, server_name: str, file_id: str, width: int, height: int, content_type: str
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) -> str:
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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",
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server_name,
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file_id[0:2],
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file_id[2:4],
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file_id[4:],
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file_name,
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)
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def remote_media_thumbnail_dir(self, server_name: str, file_id: str) -> str:
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return os.path.join(
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self.base_path,
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"remote_thumbnail",
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server_name,
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file_id[0:2],
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file_id[2:4],
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file_id[4:],
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)
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def url_cache_filepath_rel(self, media_id: str) -> str:
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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("url_cache", media_id[:10], media_id[11:])
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else:
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return os.path.join("url_cache", media_id[0:2], media_id[2:4], media_id[4:])
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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: str) -> List[str]:
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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 [os.path.join(self.base_path, "url_cache", media_id[:10])]
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else:
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return [
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os.path.join(self.base_path, "url_cache", media_id[0:2], media_id[2:4]),
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os.path.join(self.base_path, "url_cache", media_id[0:2]),
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]
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def url_cache_thumbnail_rel(
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self, media_id: str, width: int, height: int, content_type: str, method: str
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) -> str:
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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" % (width, height, top_level_type, sub_type, method)
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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", media_id[:10], media_id[11:], 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],
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media_id[2:4],
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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_rel(self, media_id: str) -> str:
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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("url_cache_thumbnails", media_id[:10], media_id[11:])
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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],
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media_id[2:4],
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media_id[4:],
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)
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url_cache_thumbnail_directory = _wrap_in_base_path(
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url_cache_thumbnail_directory_rel
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)
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def url_cache_thumbnail_dirs_to_delete(self, media_id: str) -> List[str]:
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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", media_id[:10], media_id[11:]
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),
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os.path.join(self.base_path, "url_cache_thumbnails", media_id[:10]),
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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,
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"url_cache_thumbnails",
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media_id[0:2],
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media_id[2:4],
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media_id[4:],
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),
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os.path.join(
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self.base_path, "url_cache_thumbnails", media_id[0:2], media_id[2:4]
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),
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os.path.join(self.base_path, "url_cache_thumbnails", media_id[0:2]),
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]
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