Track last processed event received_ts

1 files changed, 10 insertions, 0 deletions

diff --git a/synapse/handlers/appservice.py b/synapse/handlers/appservice.py

index 2a7e31e711..fcc1246bee 100644
--- a/synapse/handlers/appservice.py
+++ b/synapse/handlers/appservice.py
@@ -115,6 +115,16 @@ class ApplicationServicesHandler(object):
                     synapse.metrics.event_processing_positions.set(
                         upper_bound, "appservice_sender",
                     )
+
+                    now = self.clock.time_msec()
+                    ts = yield self.store.get_received_ts(events[-1].event_id)
+
+                    synapse.metrics.event_processing_lag.set(
+                        now - ts, "appservice_sender",
+                    )
+                    synapse.metrics.event_processing_last_ts.set(
+                        ts, "appservice_sender",
+                    )
             finally:
                 self.is_processing = False