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-rw-r--r--synapse/rest/media/v1/_base.py94
-rw-r--r--synapse/rest/media/v1/media_repository.py40
-rw-r--r--synapse/rest/media/v1/media_storage.py36
-rw-r--r--synapse/rest/media/v1/thumbnail_resource.py77
4 files changed, 139 insertions, 108 deletions
diff --git a/synapse/rest/media/v1/_base.py b/synapse/rest/media/v1/_base.py
index 90364ebcf7..814f4309f5 100644
--- a/synapse/rest/media/v1/_base.py
+++ b/synapse/rest/media/v1/_base.py
@@ -18,6 +18,8 @@ import os
 import urllib
 from typing import Awaitable, Dict, Generator, List, Optional, Tuple
 
+import attr
+
 from twisted.internet.interfaces import IConsumer
 from twisted.protocols.basic import FileSender
 from twisted.web.server import Request
@@ -287,44 +289,62 @@ class Responder:
         pass
 
 
-class FileInfo:
-    """Details about a requested/uploaded file.
-
-    Attributes:
-        server_name (str): The server name where the media originated from,
-            or None if local.
-        file_id (str): The local ID of the file. For local files this is the
-            same as the media_id
-        url_cache (bool): If the file is for the url preview cache
-        thumbnail (bool): Whether the file is a thumbnail or not.
-        thumbnail_width (int)
-        thumbnail_height (int)
-        thumbnail_method (str)
-        thumbnail_type (str): Content type of thumbnail, e.g. image/png
-        thumbnail_length (int): The size of the media file, in bytes.
-    """
+@attr.s(slots=True, frozen=True, auto_attribs=True)
+class ThumbnailInfo:
+    """Details about a generated thumbnail."""
 
-    def __init__(
-        self,
-        server_name,
-        file_id,
-        url_cache=False,
-        thumbnail=False,
-        thumbnail_width=None,
-        thumbnail_height=None,
-        thumbnail_method=None,
-        thumbnail_type=None,
-        thumbnail_length=None,
-    ):
-        self.server_name = server_name
-        self.file_id = file_id
-        self.url_cache = url_cache
-        self.thumbnail = thumbnail
-        self.thumbnail_width = thumbnail_width
-        self.thumbnail_height = thumbnail_height
-        self.thumbnail_method = thumbnail_method
-        self.thumbnail_type = thumbnail_type
-        self.thumbnail_length = thumbnail_length
+    width: int
+    height: int
+    method: str
+    # Content type of thumbnail, e.g. image/png
+    type: str
+    # The size of the media file, in bytes.
+    length: Optional[int] = None
+
+
+@attr.s(slots=True, frozen=True, auto_attribs=True)
+class FileInfo:
+    """Details about a requested/uploaded file."""
+
+    # The server name where the media originated from, or None if local.
+    server_name: Optional[str]
+    # The local ID of the file. For local files this is the same as the media_id
+    file_id: str
+    # If the file is for the url preview cache
+    url_cache: bool = False
+    # Whether the file is a thumbnail or not.
+    thumbnail: Optional[ThumbnailInfo] = None
+
+    # The below properties exist to maintain compatibility with third-party modules.
+    @property
+    def thumbnail_width(self):
+        if not self.thumbnail:
+            return None
+        return self.thumbnail.width
+
+    @property
+    def thumbnail_height(self):
+        if not self.thumbnail:
+            return None
+        return self.thumbnail.height
+
+    @property
+    def thumbnail_method(self):
+        if not self.thumbnail:
+            return None
+        return self.thumbnail.method
+
+    @property
+    def thumbnail_type(self):
+        if not self.thumbnail:
+            return None
+        return self.thumbnail.type
+
+    @property
+    def thumbnail_length(self):
+        if not self.thumbnail:
+            return None
+        return self.thumbnail.length
 
 
 def get_filename_from_headers(headers: Dict[bytes, List[bytes]]) -> Optional[str]:
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index 0f5ce41ff8..40ce8d2bc6 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -42,6 +42,7 @@ from synapse.util.stringutils import random_string
 from ._base import (
     FileInfo,
     Responder,
+    ThumbnailInfo,
     get_filename_from_headers,
     respond_404,
     respond_with_responder,
@@ -210,7 +211,7 @@ class MediaRepository:
         upload_name = name if name else media_info["upload_name"]
         url_cache = media_info["url_cache"]
 
-        file_info = FileInfo(None, media_id, url_cache=url_cache)
+        file_info = FileInfo(None, media_id, url_cache=bool(url_cache))
 
         responder = await self.media_storage.fetch_media(file_info)
         await respond_with_responder(
@@ -514,7 +515,7 @@ class MediaRepository:
         t_height: int,
         t_method: str,
         t_type: str,
-        url_cache: Optional[str],
+        url_cache: bool,
     ) -> Optional[str]:
         input_path = await self.media_storage.ensure_media_is_in_local_cache(
             FileInfo(None, media_id, url_cache=url_cache)
@@ -548,11 +549,12 @@ class MediaRepository:
                     server_name=None,
                     file_id=media_id,
                     url_cache=url_cache,
-                    thumbnail=True,
-                    thumbnail_width=t_width,
-                    thumbnail_height=t_height,
-                    thumbnail_method=t_method,
-                    thumbnail_type=t_type,
+                    thumbnail=ThumbnailInfo(
+                        width=t_width,
+                        height=t_height,
+                        method=t_method,
+                        type=t_type,
+                    ),
                 )
 
                 output_path = await self.media_storage.store_file(
@@ -585,7 +587,7 @@ class MediaRepository:
         t_type: str,
     ) -> Optional[str]:
         input_path = await self.media_storage.ensure_media_is_in_local_cache(
-            FileInfo(server_name, file_id, url_cache=False)
+            FileInfo(server_name, file_id)
         )
 
         try:
@@ -616,11 +618,12 @@ class MediaRepository:
                 file_info = FileInfo(
                     server_name=server_name,
                     file_id=file_id,
-                    thumbnail=True,
-                    thumbnail_width=t_width,
-                    thumbnail_height=t_height,
-                    thumbnail_method=t_method,
-                    thumbnail_type=t_type,
+                    thumbnail=ThumbnailInfo(
+                        width=t_width,
+                        height=t_height,
+                        method=t_method,
+                        type=t_type,
+                    ),
                 )
 
                 output_path = await self.media_storage.store_file(
@@ -742,12 +745,13 @@ class MediaRepository:
             file_info = FileInfo(
                 server_name=server_name,
                 file_id=file_id,
-                thumbnail=True,
-                thumbnail_width=t_width,
-                thumbnail_height=t_height,
-                thumbnail_method=t_method,
-                thumbnail_type=t_type,
                 url_cache=url_cache,
+                thumbnail=ThumbnailInfo(
+                    width=t_width,
+                    height=t_height,
+                    method=t_method,
+                    type=t_type,
+                ),
             )
 
             with self.media_storage.store_into_file(file_info) as (f, fname, finish):
diff --git a/synapse/rest/media/v1/media_storage.py b/synapse/rest/media/v1/media_storage.py
index 56cdc1b4ed..c0bb40c116 100644
--- a/synapse/rest/media/v1/media_storage.py
+++ b/synapse/rest/media/v1/media_storage.py
@@ -176,9 +176,9 @@ class MediaStorage:
                 self.filepaths.remote_media_thumbnail_rel_legacy(
                     server_name=file_info.server_name,
                     file_id=file_info.file_id,
-                    width=file_info.thumbnail_width,
-                    height=file_info.thumbnail_height,
-                    content_type=file_info.thumbnail_type,
+                    width=file_info.thumbnail.width,
+                    height=file_info.thumbnail.height,
+                    content_type=file_info.thumbnail.type,
                 )
             )
 
@@ -220,9 +220,9 @@ class MediaStorage:
             legacy_path = self.filepaths.remote_media_thumbnail_rel_legacy(
                 server_name=file_info.server_name,
                 file_id=file_info.file_id,
-                width=file_info.thumbnail_width,
-                height=file_info.thumbnail_height,
-                content_type=file_info.thumbnail_type,
+                width=file_info.thumbnail.width,
+                height=file_info.thumbnail.height,
+                content_type=file_info.thumbnail.type,
             )
             legacy_local_path = os.path.join(self.local_media_directory, legacy_path)
             if os.path.exists(legacy_local_path):
@@ -255,10 +255,10 @@ class MediaStorage:
             if file_info.thumbnail:
                 return self.filepaths.url_cache_thumbnail_rel(
                     media_id=file_info.file_id,
-                    width=file_info.thumbnail_width,
-                    height=file_info.thumbnail_height,
-                    content_type=file_info.thumbnail_type,
-                    method=file_info.thumbnail_method,
+                    width=file_info.thumbnail.width,
+                    height=file_info.thumbnail.height,
+                    content_type=file_info.thumbnail.type,
+                    method=file_info.thumbnail.method,
                 )
             return self.filepaths.url_cache_filepath_rel(file_info.file_id)
 
@@ -267,10 +267,10 @@ class MediaStorage:
                 return self.filepaths.remote_media_thumbnail_rel(
                     server_name=file_info.server_name,
                     file_id=file_info.file_id,
-                    width=file_info.thumbnail_width,
-                    height=file_info.thumbnail_height,
-                    content_type=file_info.thumbnail_type,
-                    method=file_info.thumbnail_method,
+                    width=file_info.thumbnail.width,
+                    height=file_info.thumbnail.height,
+                    content_type=file_info.thumbnail.type,
+                    method=file_info.thumbnail.method,
                 )
             return self.filepaths.remote_media_filepath_rel(
                 file_info.server_name, file_info.file_id
@@ -279,10 +279,10 @@ class MediaStorage:
         if file_info.thumbnail:
             return self.filepaths.local_media_thumbnail_rel(
                 media_id=file_info.file_id,
-                width=file_info.thumbnail_width,
-                height=file_info.thumbnail_height,
-                content_type=file_info.thumbnail_type,
-                method=file_info.thumbnail_method,
+                width=file_info.thumbnail.width,
+                height=file_info.thumbnail.height,
+                content_type=file_info.thumbnail.type,
+                method=file_info.thumbnail.method,
             )
         return self.filepaths.local_media_filepath_rel(file_info.file_id)
 
diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py
index 12bd745cb2..22f43d8531 100644
--- a/synapse/rest/media/v1/thumbnail_resource.py
+++ b/synapse/rest/media/v1/thumbnail_resource.py
@@ -26,6 +26,7 @@ from synapse.rest.media.v1.media_storage import MediaStorage
 
 from ._base import (
     FileInfo,
+    ThumbnailInfo,
     parse_media_id,
     respond_404,
     respond_with_file,
@@ -114,7 +115,7 @@ class ThumbnailResource(DirectServeJsonResource):
             thumbnail_infos,
             media_id,
             media_id,
-            url_cache=media_info["url_cache"],
+            url_cache=bool(media_info["url_cache"]),
             server_name=None,
         )
 
@@ -149,11 +150,12 @@ class ThumbnailResource(DirectServeJsonResource):
                     server_name=None,
                     file_id=media_id,
                     url_cache=media_info["url_cache"],
-                    thumbnail=True,
-                    thumbnail_width=info["thumbnail_width"],
-                    thumbnail_height=info["thumbnail_height"],
-                    thumbnail_type=info["thumbnail_type"],
-                    thumbnail_method=info["thumbnail_method"],
+                    thumbnail=ThumbnailInfo(
+                        width=info["thumbnail_width"],
+                        height=info["thumbnail_height"],
+                        type=info["thumbnail_type"],
+                        method=info["thumbnail_method"],
+                    ),
                 )
 
                 t_type = file_info.thumbnail_type
@@ -173,7 +175,7 @@ class ThumbnailResource(DirectServeJsonResource):
             desired_height,
             desired_method,
             desired_type,
-            url_cache=media_info["url_cache"],
+            url_cache=bool(media_info["url_cache"]),
         )
 
         if file_path:
@@ -210,11 +212,12 @@ class ThumbnailResource(DirectServeJsonResource):
                 file_info = FileInfo(
                     server_name=server_name,
                     file_id=media_info["filesystem_id"],
-                    thumbnail=True,
-                    thumbnail_width=info["thumbnail_width"],
-                    thumbnail_height=info["thumbnail_height"],
-                    thumbnail_type=info["thumbnail_type"],
-                    thumbnail_method=info["thumbnail_method"],
+                    thumbnail=ThumbnailInfo(
+                        width=info["thumbnail_width"],
+                        height=info["thumbnail_height"],
+                        type=info["thumbnail_type"],
+                        method=info["thumbnail_method"],
+                    ),
                 )
 
                 t_type = file_info.thumbnail_type
@@ -271,7 +274,7 @@ class ThumbnailResource(DirectServeJsonResource):
             thumbnail_infos,
             media_id,
             media_info["filesystem_id"],
-            url_cache=None,
+            url_cache=False,
             server_name=server_name,
         )
 
@@ -285,7 +288,7 @@ class ThumbnailResource(DirectServeJsonResource):
         thumbnail_infos: List[Dict[str, Any]],
         media_id: str,
         file_id: str,
-        url_cache: Optional[str] = None,
+        url_cache: bool,
         server_name: Optional[str] = None,
     ) -> None:
         """
@@ -299,7 +302,7 @@ class ThumbnailResource(DirectServeJsonResource):
             desired_type: The desired content-type of the thumbnail.
             thumbnail_infos: A list of dictionaries of candidate thumbnails.
             file_id: The ID of the media that a thumbnail is being requested for.
-            url_cache: The URL cache value.
+            url_cache: True if this is from a URL cache.
             server_name: The server name, if this is a remote thumbnail.
         """
         if thumbnail_infos:
@@ -318,13 +321,16 @@ class ThumbnailResource(DirectServeJsonResource):
                 respond_404(request)
                 return
 
+            # The thumbnail property must exist.
+            assert file_info.thumbnail is not None
+
             responder = await self.media_storage.fetch_media(file_info)
             if responder:
                 await respond_with_responder(
                     request,
                     responder,
-                    file_info.thumbnail_type,
-                    file_info.thumbnail_length,
+                    file_info.thumbnail.type,
+                    file_info.thumbnail.length,
                 )
                 return
 
@@ -351,18 +357,18 @@ class ThumbnailResource(DirectServeJsonResource):
                     server_name,
                     file_id=file_id,
                     media_id=media_id,
-                    t_width=file_info.thumbnail_width,
-                    t_height=file_info.thumbnail_height,
-                    t_method=file_info.thumbnail_method,
-                    t_type=file_info.thumbnail_type,
+                    t_width=file_info.thumbnail.width,
+                    t_height=file_info.thumbnail.height,
+                    t_method=file_info.thumbnail.method,
+                    t_type=file_info.thumbnail.type,
                 )
             else:
                 await self.media_repo.generate_local_exact_thumbnail(
                     media_id=media_id,
-                    t_width=file_info.thumbnail_width,
-                    t_height=file_info.thumbnail_height,
-                    t_method=file_info.thumbnail_method,
-                    t_type=file_info.thumbnail_type,
+                    t_width=file_info.thumbnail.width,
+                    t_height=file_info.thumbnail.height,
+                    t_method=file_info.thumbnail.method,
+                    t_type=file_info.thumbnail.type,
                     url_cache=url_cache,
                 )
 
@@ -370,8 +376,8 @@ class ThumbnailResource(DirectServeJsonResource):
             await respond_with_responder(
                 request,
                 responder,
-                file_info.thumbnail_type,
-                file_info.thumbnail_length,
+                file_info.thumbnail.type,
+                file_info.thumbnail.length,
             )
         else:
             logger.info("Failed to find any generated thumbnails")
@@ -385,7 +391,7 @@ class ThumbnailResource(DirectServeJsonResource):
         desired_type: str,
         thumbnail_infos: List[Dict[str, Any]],
         file_id: str,
-        url_cache: Optional[str],
+        url_cache: bool,
         server_name: Optional[str],
     ) -> Optional[FileInfo]:
         """
@@ -398,7 +404,7 @@ class ThumbnailResource(DirectServeJsonResource):
             desired_type: The desired content-type of the thumbnail.
             thumbnail_infos: A list of dictionaries of candidate thumbnails.
             file_id: The ID of the media that a thumbnail is being requested for.
-            url_cache: The URL cache value.
+            url_cache: True if this is from a URL cache.
             server_name: The server name, if this is a remote thumbnail.
 
         Returns:
@@ -495,12 +501,13 @@ class ThumbnailResource(DirectServeJsonResource):
                 file_id=file_id,
                 url_cache=url_cache,
                 server_name=server_name,
-                thumbnail=True,
-                thumbnail_width=thumbnail_info["thumbnail_width"],
-                thumbnail_height=thumbnail_info["thumbnail_height"],
-                thumbnail_type=thumbnail_info["thumbnail_type"],
-                thumbnail_method=thumbnail_info["thumbnail_method"],
-                thumbnail_length=thumbnail_info["thumbnail_length"],
+                thumbnail=ThumbnailInfo(
+                    width=thumbnail_info["thumbnail_width"],
+                    height=thumbnail_info["thumbnail_height"],
+                    type=thumbnail_info["thumbnail_type"],
+                    method=thumbnail_info["thumbnail_method"],
+                    length=thumbnail_info["thumbnail_length"],
+                ),
             )
 
         # No matching thumbnail was found.