Add support for adjusting Synapse rate-limiting configuration

docs/configuring-playbook-matrix-corporal.md

@@ -36,6 +36,20 @@ matrix_corporal_http_api_auth_token: "AUTH_TOKEN_HERE"
 # If you need to change the reconciliator user's id from the default (matrix-corporal)..
 # In any case, you need to make sure this Matrix user is created on your server.
 matrix_corporal_reconciliation_user_id_local_part: "matrix-corporal"
+
+# Because Corporal peridoically performs lots of user logins from the same IP,
+# you may need raise Synapse's ratelimits.
+# The values below are just an example. Tweak to your use-case (number of users, etc.)
+matrix_synapse_rc_login:
+  address:
+    per_second: 50
+    burst_count: 300
+  account:
+    per_second: 0.17
+    burst_count: 3
+  failed_attempts:
+    per_second: 0.17
+    burst_count: 3
 ```
 
 Matrix Corporal operates with a specific Matrix user on your server.

roles/matrix-synapse/defaults/main.yml

@@ -68,6 +68,28 @@ matrix_synapse_root_log_level: "INFO"
 matrix_synapse_rc_messages_per_second: 0.2
 matrix_synapse_rc_message_burst_count: 10.0
 
+matrix_synapse_rc_registration:
+  per_second: 0.17
+  burst_count: 3
+
+matrix_synapse_rc_login:
+  address:
+    per_second: 0.17
+    burst_count: 3
+  account:
+    per_second: 0.17
+    burst_count: 3
+  failed_attempts:
+    per_second: 0.17
+    burst_count: 3
+
+matrix_synapse_federation_rc_window_size: 1000
+matrix_synapse_federation_rc_sleep_limit: 10
+matrix_synapse_federation_rc_sleep_delay: 500
+matrix_synapse_federation_rc_reject_limit: 50
+matrix_synapse_federation_rc_concurrent: 3
+matrix_synapse_federation_rr_transactions_per_room_per_second: 50
+
 # Controls whether the TLS federation listener is enabled (tcp/8448).
 # Only makes sense if federation is enabled (`matrix_synapse_federation_enabled`).
 # Note that federation may potentially be enabled as non-TLS on tcp/8048 as well.

roles/matrix-synapse/templates/synapse/homeserver.yaml.j2

@@ -409,6 +409,7 @@ rc_message_burst_count: {{ matrix_synapse_rc_message_burst_count }}
 #rc_registration:
 #  per_second: 0.17
 #  burst_count: 3
+rc_registration: {{ matrix_synapse_rc_registration|to_json }}
 #
 #rc_login:
 #  address:
@@ -420,30 +421,36 @@ rc_message_burst_count: {{ matrix_synapse_rc_message_burst_count }}
 #  failed_attempts:
 #    per_second: 0.17
 #    burst_count: 3
+rc_login: {{ matrix_synapse_rc_login|to_json }}
 
 # The federation window size in milliseconds
 #
 #federation_rc_window_size: 1000
+federation_rc_window_size: {{ matrix_synapse_federation_rc_window_size }}
 
 # The number of federation requests from a single server in a window
 # before the server will delay processing the request.
 #
 #federation_rc_sleep_limit: 10
+federation_rc_sleep_limit: {{ matrix_synapse_federation_rc_sleep_limit }}
 
 # The duration in milliseconds to delay processing events from
 # remote servers by if they go over the sleep limit.
 #
 #federation_rc_sleep_delay: 500
+federation_rc_sleep_delay: {{ matrix_synapse_federation_rc_sleep_delay }}
 
 # The maximum number of concurrent federation requests allowed
 # from a single server
 #
 #federation_rc_reject_limit: 50
+federation_rc_reject_limit: {{ matrix_synapse_federation_rc_reject_limit }}
 
 # The number of federation requests to concurrently process from a
 # single server
 #
 #federation_rc_concurrent: 3
+federation_rc_concurrent: {{ matrix_synapse_federation_rc_concurrent }}
 
 # Target outgoing federation transaction frequency for sending read-receipts,
 # per-room.
@@ -452,6 +459,7 @@ rc_message_burst_count: {{ matrix_synapse_rc_message_burst_count }}
 # into fewer transactions.
 #
 #federation_rr_transactions_per_room_per_second: 50
+federation_rr_transactions_per_room_per_second: {{ matrix_synapse_federation_rr_transactions_per_room_per_second }}