Register media servlets via regex. (#16419)

This converts the media servlet URLs in the same way as
(most) of the rest of Synapse. This will give more flexibility
in the versions each endpoint exists under.

1 files changed, 9 insertions, 1 deletions

diff --git a/synapse/media/media_repository.py b/synapse/media/media_repository.py
index 1b7b014f9a..d11c2ff4ee 100644
--- a/synapse/media/media_repository.py
+++ b/synapse/media/media_repository.py
@@ -48,6 +48,7 @@ from synapse.media.filepath import MediaFilePaths
 from synapse.media.media_storage import MediaStorage
 from synapse.media.storage_provider import StorageProviderWrapper
 from synapse.media.thumbnailer import Thumbnailer, ThumbnailError
+from synapse.media.url_previewer import UrlPreviewer
 from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.types import UserID
 from synapse.util.async_helpers import Linearizer
@@ -114,7 +115,7 @@ class MediaRepository:
             )
             storage_providers.append(provider)
 
-        self.media_storage = MediaStorage(
+        self.media_storage: MediaStorage = MediaStorage(
             self.hs, self.primary_base_path, self.filepaths, storage_providers
         )
 
@@ -142,6 +143,13 @@ class MediaRepository:
                 MEDIA_RETENTION_CHECK_PERIOD_MS,
             )
 
+        if hs.config.media.url_preview_enabled:
+            self.url_previewer: Optional[UrlPreviewer] = UrlPreviewer(
+                hs, self, self.media_storage
+            )
+        else:
+            self.url_previewer = None
+
     def _start_update_recently_accessed(self) -> Deferred:
         return run_as_background_process(
             "update_recently_accessed_media", self._update_recently_accessed