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Store if we fail to fetch an event from a destination

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This commit is contained in:
Erik Johnston 2016-08-10 11:31:46 +01:00
parent d45489474d
commit f91df1f761
1 changed files with 36 additions and 1 deletions
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37
synapse/federation/federation_client.py
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@ -51,10 +51,34 @@ sent_edus_counter = metrics.register_counter("sent_edus")
sent_queries_counter = metrics.register_counter("sent_queries", labels=["type"])
PDU_RETRY_TIME_MS = 1 * 60 * 1000
class FederationClient(FederationBase):
def __init__(self, hs):
super(FederationClient, self).__init__(hs)
self.pdu_destination_tried = {}
self._clock.looping_call(
self._clear_tried_cache, 60 * 1000,
)
def _clear_tried_cache(self):
"""Clear pdu_destination_tried cache"""
now = self._clock.time_msec()
old_dict = self.pdu_destination_tried
self.pdu_destination_tried = {}
for event_id, destination_dict in old_dict.items():
destination_dict = {
dest: time
for dest, time in destination_dict.items()
if time + PDU_RETRY_TIME_MS > now
}
if destination_dict:
self.pdu_destination_tried[event_id] = destination_dict
def start_get_pdu_cache(self):
self._get_pdu_cache = ExpiringCache(
cache_name="get_pdu_cache",
@ -240,8 +264,15 @@ class FederationClient(FederationBase):
if ev:
defer.returnValue(ev)
pdu_attempts = self.pdu_destination_tried.setdefault(event_id, {})
pdu = None
for destination in destinations:
now = self._clock.time_msec()
last_attempt = pdu_attempts.get(destination, 0)
if last_attempt + PDU_RETRY_TIME_MS > now:
continue
try:
limiter = yield get_retry_limiter(
destination,
@ -276,9 +307,11 @@ class FederationClient(FederationBase):
)
continue
except CodeMessageException as e:
if 400 <= e.code < 500:
if 400 <= e.code < 500 and e.code != 404:
raise
pdu_attempts[destination] = now
logger.info(
"Failed to get PDU %s from %s because %s",
event_id, destination, e,
@ -288,6 +321,8 @@ class FederationClient(FederationBase):
logger.info(e.message)
continue
except Exception as e:
pdu_attempts[destination] = now
logger.info(
"Failed to get PDU %s from %s because %s",
event_id, destination, e,