5 files changed, 15 insertions, 11 deletions
diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index bb4d53d778..2ca2e051e4 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -294,7 +294,7 @@ def listen_ssl(
     return r
 
 
-def refresh_certificate(hs):
+def refresh_certificate(hs: "HomeServer"):
     """
     Refresh the TLS certificates that Synapse is using by re-reading them from
     disk and updating the TLS context factories to use them.
@@ -419,11 +419,11 @@ async def start(hs: "HomeServer"):
         atexit.register(gc.freeze)
 
 
-def setup_sentry(hs):
+def setup_sentry(hs: "HomeServer"):
     """Enable sentry integration, if enabled in configuration
 
     Args:
-        hs (synapse.server.HomeServer)
+        hs
     """
 
     if not hs.config.metrics.sentry_enabled:
@@ -449,7 +449,7 @@ def setup_sentry(hs):
         scope.set_tag("worker_name", name)
 
 
-def setup_sdnotify(hs):
+def setup_sdnotify(hs: "HomeServer"):
     """Adds process state hooks to tell systemd what we are up to."""
 
     # Tell systemd our state, if we're using it. This will silently fail if
diff --git a/synapse/app/admin_cmd.py b/synapse/app/admin_cmd.py
index b156b93bf3..2fc848596d 100644
--- a/synapse/app/admin_cmd.py
+++ b/synapse/app/admin_cmd.py
@@ -68,11 +68,11 @@ class AdminCmdServer(HomeServer):
     DATASTORE_CLASS = AdminCmdSlavedStore
 
 
-async def export_data_command(hs, args):
+async def export_data_command(hs: HomeServer, args):
     """Export data for a user.
 
     Args:
-        hs (HomeServer)
+        hs
         args (argparse.Namespace)
     """
 
diff --git a/synapse/app/generic_worker.py b/synapse/app/generic_worker.py
index 7489f31d9a..51eadf122d 100644
--- a/synapse/app/generic_worker.py
+++ b/synapse/app/generic_worker.py
@@ -131,10 +131,10 @@ class KeyUploadServlet(RestServlet):
 
     PATTERNS = client_patterns("/keys/upload(/(?P<device_id>[^/]+))?$")
 
-    def __init__(self, hs):
+    def __init__(self, hs: HomeServer):
         """
         Args:
-            hs (synapse.server.HomeServer): server
+            hs: server
         """
         super().__init__()
         self.auth = hs.get_auth()
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 422f03cc04..93e2299266 100644
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -412,7 +412,7 @@ def format_config_error(e: ConfigError) -> Iterator[str]:
         e = e.__cause__
 
 
-def run(hs):
+def run(hs: HomeServer):
     PROFILE_SYNAPSE = False
     if PROFILE_SYNAPSE:
 
diff --git a/synapse/app/phone_stats_home.py b/synapse/app/phone_stats_home.py
index fcd01e833c..126450e17a 100644
--- a/synapse/app/phone_stats_home.py
+++ b/synapse/app/phone_stats_home.py
@@ -15,11 +15,15 @@ import logging
 import math
 import resource
 import sys
+from typing import TYPE_CHECKING
 
 from prometheus_client import Gauge
 
 from synapse.metrics.background_process_metrics import wrap_as_background_process
 
+if TYPE_CHECKING:
+    from synapse.server import HomeServer
+
 logger = logging.getLogger("synapse.app.homeserver")
 
 # Contains the list of processes we will be monitoring
@@ -41,7 +45,7 @@ registered_reserved_users_mau_gauge = Gauge(
 
 
 @wrap_as_background_process("phone_stats_home")
-async def phone_stats_home(hs, stats, stats_process=_stats_process):
+async def phone_stats_home(hs: "HomeServer", stats, stats_process=_stats_process):
     logger.info("Gathering stats for reporting")
     now = int(hs.get_clock().time())
     uptime = int(now - hs.start_time)
@@ -142,7 +146,7 @@ async def phone_stats_home(hs, stats, stats_process=_stats_process):
         logger.warning("Error reporting stats: %s", e)
 
 
-def start_phone_stats_home(hs):
+def start_phone_stats_home(hs: "HomeServer"):
     """
     Start the background tasks which report phone home stats.
     """