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Fix spinloop during partial state sync when a prev event is in backoff (#15351)

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Previously, we would spin in a tight loop until
`update_state_for_partial_state_event` stopped raising
`FederationPullAttemptBackoffError`s. Replace the spinloop with a wait
until the backoff period has expired.

Signed-off-by: Sean Quah <seanq@matrix.org>
This commit is contained in:
Sean Quah 2023-03-30 13:36:41 +01:00 • committed by GitHub
parent a3bad89d57
commit d9f694932c
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6 changed files with 80 additions and 48 deletions
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17
synapse/api/errors.py
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@ -27,7 +27,7 @@ from synapse.util import json_decoder
if typing.TYPE_CHECKING:
from synapse.config.homeserver import HomeServerConfig
from synapse.types import JsonDict
from synapse.types import JsonDict, StrCollection
logger = logging.getLogger(__name__)
@ -682,18 +682,27 @@ class FederationPullAttemptBackoffError(RuntimeError):
Attributes:
event_id: The event_id which we are refusing to pull
message: A custom error message that gives more context
retry_after_ms: The remaining backoff interval, in milliseconds
"""
def __init__(self, event_ids: List[str], message: Optional[str]):
self.event_ids = event_ids
def __init__(
self, event_ids: "StrCollection", message: Optional[str], retry_after_ms: int
):
event_ids = list(event_ids)
if message:
error_message = message
else:
error_message = f"Not attempting to pull event_ids={self.event_ids} because we already tried to pull them recently (backing off)."
error_message = (
f"Not attempting to pull event_ids={event_ids} because we already "
"tried to pull them recently (backing off)."
)
super().__init__(error_message)
self.event_ids = event_ids
self.retry_after_ms = retry_after_ms
class HttpResponseException(CodeMessageException):
"""