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-rw-r--r--synapse/rest/admin/rooms.py8
-rw-r--r--synapse/rest/admin/users.py2
-rw-r--r--synapse/rest/client/v1/login.py8
-rw-r--r--synapse/rest/client/v1/room.py10
-rw-r--r--synapse/rest/client/v2_alpha/sendtodevice.py2
-rw-r--r--synapse/rest/consent/consent_resource.py4
-rw-r--r--synapse/rest/key/v2/remote_key_resource.py4
-rw-r--r--synapse/rest/media/v1/_base.py2
-rw-r--r--synapse/rest/media/v1/media_repository.py10
-rw-r--r--synapse/rest/media/v1/media_storage.py4
-rw-r--r--synapse/rest/media/v1/preview_url_resource.py8
-rw-r--r--synapse/rest/media/v1/upload_resource.py6
-rw-r--r--synapse/rest/synapse/client/pick_username.py4
13 files changed, 33 insertions, 39 deletions
diff --git a/synapse/rest/admin/rooms.py b/synapse/rest/admin/rooms.py
index 3c51a742bf..40ee33646c 100644
--- a/synapse/rest/admin/rooms.py
+++ b/synapse/rest/admin/rooms.py
@@ -402,9 +402,9 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, RestServlet):
 
         # Get the room ID from the identifier.
         try:
-            remote_room_hosts = [
+            remote_room_hosts: Optional[List[str]] = [
                 x.decode("ascii") for x in request.args[b"server_name"]
-            ]  # type: Optional[List[str]]
+            ]
         except Exception:
             remote_room_hosts = None
         room_id, remote_room_hosts = await self.resolve_room_id(
@@ -659,9 +659,7 @@ class RoomEventContextServlet(RestServlet):
         filter_str = parse_string(request, "filter", encoding="utf-8")
         if filter_str:
             filter_json = urlparse.unquote(filter_str)
-            event_filter = Filter(
-                json_decoder.decode(filter_json)
-            )  # type: Optional[Filter]
+            event_filter: Optional[Filter] = Filter(json_decoder.decode(filter_json))
         else:
             event_filter = None
 
diff --git a/synapse/rest/admin/users.py b/synapse/rest/admin/users.py
index 06e6ccee42..589e47fa47 100644
--- a/synapse/rest/admin/users.py
+++ b/synapse/rest/admin/users.py
@@ -357,7 +357,7 @@ class UserRegisterServlet(RestServlet):
     def __init__(self, hs: "HomeServer"):
         self.auth_handler = hs.get_auth_handler()
         self.reactor = hs.get_reactor()
-        self.nonces = {}  # type: Dict[str, int]
+        self.nonces: Dict[str, int] = {}
         self.hs = hs
 
     def _clear_old_nonces(self):
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index cbcb60fe31..99d02cb355 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -121,7 +121,7 @@ class LoginRestServlet(RestServlet):
             flows.append({"type": LoginRestServlet.CAS_TYPE})
 
         if self.cas_enabled or self.saml2_enabled or self.oidc_enabled:
-            sso_flow = {
+            sso_flow: JsonDict = {
                 "type": LoginRestServlet.SSO_TYPE,
                 "identity_providers": [
                     _get_auth_flow_dict_for_idp(
@@ -129,7 +129,7 @@ class LoginRestServlet(RestServlet):
                     )
                     for idp in self._sso_handler.get_identity_providers().values()
                 ],
-            }  # type: JsonDict
+            }
 
             if self._msc2858_enabled:
                 # backwards-compatibility support for clients which don't
@@ -447,7 +447,7 @@ def _get_auth_flow_dict_for_idp(
         use_unstable_brands: whether we should use brand identifiers suitable
            for the unstable API
     """
-    e = {"id": idp.idp_id, "name": idp.idp_name}  # type: JsonDict
+    e: JsonDict = {"id": idp.idp_id, "name": idp.idp_name}
     if idp.idp_icon:
         e["icon"] = idp.idp_icon
     if idp.idp_brand:
@@ -561,7 +561,7 @@ class SsoRedirectServlet(RestServlet):
             finish_request(request)
             return
 
-        args = request.args  # type: Dict[bytes, List[bytes]]  # type: ignore
+        args: Dict[bytes, List[bytes]] = request.args  # type: ignore
         client_redirect_url = parse_bytes_from_args(args, "redirectUrl", required=True)
         sso_url = await self._sso_handler.handle_redirect_request(
             request,
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index ebf4e32230..31a1193cd3 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -783,7 +783,7 @@ class PublicRoomListRestServlet(TransactionRestServlet):
         server = parse_string(request, "server", default=None)
         content = parse_json_object_from_request(request)
 
-        limit = int(content.get("limit", 100))  # type: Optional[int]
+        limit: Optional[int] = int(content.get("limit", 100))
         since_token = content.get("since", None)
         search_filter = content.get("filter", None)
 
@@ -929,9 +929,7 @@ class RoomMessageListRestServlet(RestServlet):
         filter_str = parse_string(request, "filter", encoding="utf-8")
         if filter_str:
             filter_json = urlparse.unquote(filter_str)
-            event_filter = Filter(
-                json_decoder.decode(filter_json)
-            )  # type: Optional[Filter]
+            event_filter: Optional[Filter] = Filter(json_decoder.decode(filter_json))
             if (
                 event_filter
                 and event_filter.filter_json.get("event_format", "client")
@@ -1044,9 +1042,7 @@ class RoomEventContextServlet(RestServlet):
         filter_str = parse_string(request, "filter", encoding="utf-8")
         if filter_str:
             filter_json = urlparse.unquote(filter_str)
-            event_filter = Filter(
-                json_decoder.decode(filter_json)
-            )  # type: Optional[Filter]
+            event_filter: Optional[Filter] = Filter(json_decoder.decode(filter_json))
         else:
             event_filter = None
 
diff --git a/synapse/rest/client/v2_alpha/sendtodevice.py b/synapse/rest/client/v2_alpha/sendtodevice.py
index f8dcee603c..d537d811d8 100644
--- a/synapse/rest/client/v2_alpha/sendtodevice.py
+++ b/synapse/rest/client/v2_alpha/sendtodevice.py
@@ -59,7 +59,7 @@ class SendToDeviceRestServlet(servlet.RestServlet):
             requester, message_type, content["messages"]
         )
 
-        response = (200, {})  # type: Tuple[int, dict]
+        response: Tuple[int, dict] = (200, {})
         return response
 
 
diff --git a/synapse/rest/consent/consent_resource.py b/synapse/rest/consent/consent_resource.py
index e52570cd8e..4282e2b228 100644
--- a/synapse/rest/consent/consent_resource.py
+++ b/synapse/rest/consent/consent_resource.py
@@ -117,7 +117,7 @@ class ConsentResource(DirectServeHtmlResource):
         has_consented = False
         public_version = username == ""
         if not public_version:
-            args = request.args  # type: Dict[bytes, List[bytes]]
+            args: Dict[bytes, List[bytes]] = request.args
             userhmac_bytes = parse_bytes_from_args(args, "h", required=True)
 
             self._check_hash(username, userhmac_bytes)
@@ -154,7 +154,7 @@ class ConsentResource(DirectServeHtmlResource):
         """
         version = parse_string(request, "v", required=True)
         username = parse_string(request, "u", required=True)
-        args = request.args  # type: Dict[bytes, List[bytes]]
+        args: Dict[bytes, List[bytes]] = request.args
         userhmac = parse_bytes_from_args(args, "h", required=True)
 
         self._check_hash(username, userhmac)
diff --git a/synapse/rest/key/v2/remote_key_resource.py b/synapse/rest/key/v2/remote_key_resource.py
index d56a1ae482..63a40b1852 100644
--- a/synapse/rest/key/v2/remote_key_resource.py
+++ b/synapse/rest/key/v2/remote_key_resource.py
@@ -97,7 +97,7 @@ class RemoteKey(DirectServeJsonResource):
     async def _async_render_GET(self, request):
         if len(request.postpath) == 1:
             (server,) = request.postpath
-            query = {server.decode("ascii"): {}}  # type: dict
+            query: dict = {server.decode("ascii"): {}}
         elif len(request.postpath) == 2:
             server, key_id = request.postpath
             minimum_valid_until_ts = parse_integer(request, "minimum_valid_until_ts")
@@ -141,7 +141,7 @@ class RemoteKey(DirectServeJsonResource):
         time_now_ms = self.clock.time_msec()
 
         # Note that the value is unused.
-        cache_misses = {}  # type: Dict[str, Dict[str, int]]
+        cache_misses: Dict[str, Dict[str, int]] = {}
         for (server_name, key_id, _), results in cached.items():
             results = [(result["ts_added_ms"], result) for result in results]
 
diff --git a/synapse/rest/media/v1/_base.py b/synapse/rest/media/v1/_base.py
index 0fb4cd81f1..90364ebcf7 100644
--- a/synapse/rest/media/v1/_base.py
+++ b/synapse/rest/media/v1/_base.py
@@ -49,7 +49,7 @@ TEXT_CONTENT_TYPES = [
 def parse_media_id(request: Request) -> Tuple[str, str, Optional[str]]:
     try:
         # The type on postpath seems incorrect in Twisted 21.2.0.
-        postpath = request.postpath  # type: List[bytes]  # type: ignore
+        postpath: List[bytes] = request.postpath  # type: ignore
         assert postpath
 
         # This allows users to append e.g. /test.png to the URL. Useful for
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index 21c43c340c..4f702f890c 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -78,16 +78,16 @@ class MediaRepository:
 
         Thumbnailer.set_limits(self.max_image_pixels)
 
-        self.primary_base_path = hs.config.media_store_path  # type: str
-        self.filepaths = MediaFilePaths(self.primary_base_path)  # type: MediaFilePaths
+        self.primary_base_path: str = hs.config.media_store_path
+        self.filepaths: MediaFilePaths = MediaFilePaths(self.primary_base_path)
 
         self.dynamic_thumbnails = hs.config.dynamic_thumbnails
         self.thumbnail_requirements = hs.config.thumbnail_requirements
 
         self.remote_media_linearizer = Linearizer(name="media_remote")
 
-        self.recently_accessed_remotes = set()  # type: Set[Tuple[str, str]]
-        self.recently_accessed_locals = set()  # type: Set[str]
+        self.recently_accessed_remotes: Set[Tuple[str, str]] = set()
+        self.recently_accessed_locals: Set[str] = set()
 
         self.federation_domain_whitelist = hs.config.federation_domain_whitelist
 
@@ -711,7 +711,7 @@ class MediaRepository:
 
         # We deduplicate the thumbnail sizes by ignoring the cropped versions if
         # they have the same dimensions of a scaled one.
-        thumbnails = {}  # type: Dict[Tuple[int, int, str], str]
+        thumbnails: Dict[Tuple[int, int, str], str] = {}
         for r_width, r_height, r_method, r_type in requirements:
             if r_method == "crop":
                 thumbnails.setdefault((r_width, r_height, r_type), r_method)
diff --git a/synapse/rest/media/v1/media_storage.py b/synapse/rest/media/v1/media_storage.py
index c7fd97c46c..56cdc1b4ed 100644
--- a/synapse/rest/media/v1/media_storage.py
+++ b/synapse/rest/media/v1/media_storage.py
@@ -191,7 +191,7 @@ class MediaStorage:
 
         for provider in self.storage_providers:
             for path in paths:
-                res = await provider.fetch(path, file_info)  # type: Any
+                res: Any = await provider.fetch(path, file_info)
                 if res:
                     logger.debug("Streaming %s from %s", path, provider)
                     return res
@@ -233,7 +233,7 @@ class MediaStorage:
             os.makedirs(dirname)
 
         for provider in self.storage_providers:
-            res = await provider.fetch(path, file_info)  # type: Any
+            res: Any = await provider.fetch(path, file_info)
             if res:
                 with res:
                     consumer = BackgroundFileConsumer(
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 0adfb1a70f..8e7fead3a2 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -169,12 +169,12 @@ class PreviewUrlResource(DirectServeJsonResource):
 
         # memory cache mapping urls to an ObservableDeferred returning
         # JSON-encoded OG metadata
-        self._cache = ExpiringCache(
+        self._cache: ExpiringCache[str, ObservableDeferred] = ExpiringCache(
             cache_name="url_previews",
             clock=self.clock,
             # don't spider URLs more often than once an hour
             expiry_ms=ONE_HOUR,
-        )  # type: ExpiringCache[str, ObservableDeferred]
+        )
 
         if self._worker_run_media_background_jobs:
             self._cleaner_loop = self.clock.looping_call(
@@ -460,7 +460,7 @@ class PreviewUrlResource(DirectServeJsonResource):
         file_info = FileInfo(server_name=None, file_id=file_id, url_cache=True)
 
         # If this URL can be accessed via oEmbed, use that instead.
-        url_to_download = url  # type: Optional[str]
+        url_to_download: Optional[str] = url
         oembed_url = self._get_oembed_url(url)
         if oembed_url:
             # The result might be a new URL to download, or it might be HTML content.
@@ -788,7 +788,7 @@ def _calc_og(tree: "etree.Element", media_uri: str) -> Dict[str, Optional[str]]:
     # "og:video:height" : "720",
     # "og:video:secure_url": "https://www.youtube.com/v/LXDBoHyjmtw?version=3",
 
-    og = {}  # type: Dict[str, Optional[str]]
+    og: Dict[str, Optional[str]] = {}
     for tag in tree.xpath("//*/meta[starts-with(@property, 'og:')]"):
         if "content" in tag.attrib:
             # if we've got more than 50 tags, someone is taking the piss
diff --git a/synapse/rest/media/v1/upload_resource.py b/synapse/rest/media/v1/upload_resource.py
index 62dc4aae2d..146adca8f1 100644
--- a/synapse/rest/media/v1/upload_resource.py
+++ b/synapse/rest/media/v1/upload_resource.py
@@ -61,11 +61,11 @@ class UploadResource(DirectServeJsonResource):
                 errcode=Codes.TOO_LARGE,
             )
 
-        args = request.args  # type: Dict[bytes, List[bytes]]  # type: ignore
+        args: Dict[bytes, List[bytes]] = request.args  # type: ignore
         upload_name_bytes = parse_bytes_from_args(args, "filename")
         if upload_name_bytes:
             try:
-                upload_name = upload_name_bytes.decode("utf8")  # type: Optional[str]
+                upload_name: Optional[str] = upload_name_bytes.decode("utf8")
             except UnicodeDecodeError:
                 raise SynapseError(
                     msg="Invalid UTF-8 filename parameter: %r" % (upload_name), code=400
@@ -89,7 +89,7 @@ class UploadResource(DirectServeJsonResource):
         # TODO(markjh): parse content-dispostion
 
         try:
-            content = request.content  # type: IO  # type: ignore
+            content: IO = request.content  # type: ignore
             content_uri = await self.media_repo.create_content(
                 media_type, upload_name, content, content_length, requester.user
             )
diff --git a/synapse/rest/synapse/client/pick_username.py b/synapse/rest/synapse/client/pick_username.py
index 9b002cc15e..ab24ec0a8e 100644
--- a/synapse/rest/synapse/client/pick_username.py
+++ b/synapse/rest/synapse/client/pick_username.py
@@ -118,9 +118,9 @@ class AccountDetailsResource(DirectServeHtmlResource):
             use_display_name = parse_boolean(request, "use_display_name", default=False)
 
             try:
-                emails_to_use = [
+                emails_to_use: List[str] = [
                     val.decode("utf-8") for val in request.args.get(b"use_email", [])
-                ]  # type: List[str]
+                ]
             except ValueError:
                 raise SynapseError(400, "Query parameter use_email must be utf-8")
         except SynapseError as e: