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-rw-r--r--synapse/handlers/presence.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index a9f5233119..da9f0da69e 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -53,6 +53,9 @@ bump_active_time_counter = metrics.register_counter("bump_active_time")
 get_updates_counter = metrics.register_counter("get_updates", labels=["type"])
 
 notify_reason_counter = metrics.register_counter("notify_reason", labels=["reason"])
+state_transition_counter = metrics.register_counter(
+    "state_transition", labels=["from", "to"]
+)
 
 
 # If a user was last active in the last LAST_ACTIVE_GRANULARITY, consider them
@@ -950,6 +953,7 @@ def should_notify(old_state, new_state):
 
     if old_state.state != new_state.state:
         notify_reason_counter.inc("state_change")
+        state_transition_counter.inc(old_state.state, new_state.state)
         return True
 
     if old_state.state == PresenceState.ONLINE: