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Add some metrics to staging area (#10284)

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Erik Johnston 2021-07-01 10:18:25 +01:00 committed by GitHub
parent 04c8f308f4
commit 76addadd7c
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changelog.d/10284.feature Normal file
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@ -0,0 +1 @@
Add metrics for new inbound federation staging area.

39
synapse/storage/databases/main/event_federation.py
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@ -16,6 +16,8 @@ import logging
from queue import Empty, PriorityQueue
from typing import Collection, Dict, Iterable, List, Optional, Set, Tuple
from prometheus_client import Gauge
from synapse.api.constants import MAX_DEPTH
from synapse.api.errors import StoreError
from synapse.api.room_versions import RoomVersion
@ -32,6 +34,16 @@ from synapse.util.caches.descriptors import cached
from synapse.util.caches.lrucache import LruCache
from synapse.util.iterutils import batch_iter
oldest_pdu_in_federation_staging = Gauge(
"synapse_federation_server_oldest_inbound_pdu_in_staging",
"The age in seconds since we received the oldest pdu in the federation staging area",
)
number_pdus_in_federation_queue = Gauge(
"synapse_federation_server_number_inbound_pdu_in_staging",
"The total number of events in the inbound federation staging",
)
logger = logging.getLogger(__name__)
@ -54,6 +66,8 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
500000, "_event_auth_cache", size_callback=len
) # type: LruCache[str, List[Tuple[str, int]]]
self._clock.looping_call(self._get_stats_for_federation_staging, 30 * 1000)
async def get_auth_chain(
self, room_id: str, event_ids: Collection[str], include_given: bool = False
) -> List[EventBase]:
@ -1193,6 +1207,31 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
return origin, event
@wrap_as_background_process("_get_stats_for_federation_staging")
async def _get_stats_for_federation_staging(self):
"""Update the prometheus metrics for the inbound federation staging area."""
def _get_stats_for_federation_staging_txn(txn):
txn.execute(
"SELECT coalesce(count(*), 0) FROM federation_inbound_events_staging"
)
(count,) = txn.fetchone()
txn.execute(
"SELECT coalesce(min(received_ts), 0) FROM federation_inbound_events_staging"
)
(age,) = txn.fetchone()
return count, age
count, age = await self.db_pool.runInteraction(
"_get_stats_for_federation_staging", _get_stats_for_federation_staging_txn
)
number_pdus_in_federation_queue.set(count)
oldest_pdu_in_federation_staging.set(age)
class EventFederationStore(EventFederationWorkerStore):
"""Responsible for storing and serving up the various graphs associated