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https://git.anonymousland.org/anonymousland/synapse.git
synced 2025-05-02 13:56:02 -04:00
Add per server retry limiting.
Factor out the pre destination retry logic from TransactionQueue so it can be reused in both get_pdu and crypto.keyring
This commit is contained in:
Erik Johnston
parent
5025305fb2
commit
2b8f1a956c
4 changed files with 205 additions and 122 deletions
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@ -22,6 +22,9 @@ from .units import Transaction
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from synapse.api.errors import HttpResponseException
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from synapse.util.logutils import log_function
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from synapse.util.logcontext import PreserveLoggingContext
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from synapse.util.retryutils import (
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get_retry_limiter, NotRetryingDestination,
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)
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import logging
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@ -138,25 +141,6 @@ class TransactionQueue(object):
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@defer.inlineCallbacks
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@log_function
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def _attempt_new_transaction(self, destination):
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(retry_last_ts, retry_interval) = (0, 0)
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retry_timings = yield self.store.get_destination_retry_timings(
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destination
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)
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if retry_timings:
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(retry_last_ts, retry_interval) = (
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retry_timings.retry_last_ts, retry_timings.retry_interval
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)
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if retry_last_ts + retry_interval > int(self._clock.time_msec()):
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logger.info(
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"TX [%s] not ready for retry yet - "
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"dropping transaction for now",
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destination,
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)
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return
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else:
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logger.info("TX [%s] is ready for retry", destination)
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if destination in self.pending_transactions:
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# XXX: pending_transactions can get stuck on by a never-ending
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# request at which point pending_pdus_by_dest just keeps growing.
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@ -204,77 +188,79 @@ class TransactionQueue(object):
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]
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try:
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self.pending_transactions[destination] = 1
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logger.debug("TX [%s] Persisting transaction...", destination)
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transaction = Transaction.create_new(
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origin_server_ts=int(self._clock.time_msec()),
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transaction_id=str(self._next_txn_id),
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origin=self.server_name,
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destination=destination,
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pdus=pdus,
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edus=edus,
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pdu_failures=failures,
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)
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self._next_txn_id += 1
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yield self.transaction_actions.prepare_to_send(transaction)
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logger.debug("TX [%s] Persisted transaction", destination)
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logger.info(
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"TX [%s] Sending transaction [%s]",
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limiter = yield get_retry_limiter(
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destination,
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transaction.transaction_id,
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self._clock,
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self.store,
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)
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# Actually send the transaction
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with limiter:
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self.pending_transactions[destination] = 1
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# FIXME (erikj): This is a bit of a hack to make the Pdu age
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# keys work
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def json_data_cb():
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data = transaction.get_dict()
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now = int(self._clock.time_msec())
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if "pdus" in data:
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for p in data["pdus"]:
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if "age_ts" in p:
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unsigned = p.setdefault("unsigned", {})
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unsigned["age"] = now - int(p["age_ts"])
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del p["age_ts"]
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return data
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logger.debug("TX [%s] Persisting transaction...", destination)
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try:
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response = yield self.transport_layer.send_transaction(
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transaction, json_data_cb
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transaction = Transaction.create_new(
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origin_server_ts=int(self._clock.time_msec()),
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transaction_id=str(self._next_txn_id),
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origin=self.server_name,
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destination=destination,
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pdus=pdus,
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edus=edus,
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pdu_failures=failures,
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)
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code = 200
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except HttpResponseException as e:
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code = e.code
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response = e.response
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logger.info("TX [%s] got %d response", destination, code)
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self._next_txn_id += 1
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logger.debug("TX [%s] Sent transaction", destination)
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logger.debug("TX [%s] Marking as delivered...", destination)
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yield self.transaction_actions.prepare_to_send(transaction)
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yield self.transaction_actions.delivered(
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transaction, code, response
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)
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logger.debug("TX [%s] Persisted transaction", destination)
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logger.info(
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"TX [%s] Sending transaction [%s]",
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destination,
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transaction.transaction_id,
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)
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# Actually send the transaction
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# FIXME (erikj): This is a bit of a hack to make the Pdu age
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# keys work
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def json_data_cb():
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data = transaction.get_dict()
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now = int(self._clock.time_msec())
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if "pdus" in data:
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for p in data["pdus"]:
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if "age_ts" in p:
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unsigned = p.setdefault("unsigned", {})
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unsigned["age"] = now - int(p["age_ts"])
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del p["age_ts"]
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return data
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try:
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response = yield self.transport_layer.send_transaction(
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transaction, json_data_cb
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)
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code = 200
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except HttpResponseException as e:
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code = e.code
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response = e.response
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logger.info("TX [%s] got %d response", destination, code)
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logger.debug("TX [%s] Sent transaction", destination)
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logger.debug("TX [%s] Marking as delivered...", destination)
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yield self.transaction_actions.delivered(
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transaction, code, response
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)
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logger.debug("TX [%s] Marked as delivered", destination)
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logger.debug("TX [%s] Marked as delivered", destination)
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logger.debug("TX [%s] Yielding to callbacks...", destination)
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for deferred in deferreds:
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if code == 200:
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if retry_last_ts:
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# this host is alive! reset retry schedule
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yield self.store.set_destination_retry_timings(
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destination, 0, 0
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)
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deferred.callback(None)
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else:
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self.set_retrying(destination, retry_interval)
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deferred.errback(RuntimeError("Got status %d" % code))
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# Ensures we don't continue until all callbacks on that
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@ -285,6 +271,12 @@ class TransactionQueue(object):
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pass
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logger.debug("TX [%s] Yielded to callbacks", destination)
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except NotRetryingDestination:
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logger.info(
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"TX [%s] not ready for retry yet - "
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"dropping transaction for now",
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destination,
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)
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except RuntimeError as e:
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# We capture this here as there as nothing actually listens
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# for this finishing functions deferred.
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@ -302,8 +294,6 @@ class TransactionQueue(object):
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e,
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)
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self.set_retrying(destination, retry_interval)
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for deferred in deferreds:
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if not deferred.called:
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deferred.errback(e)
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@ -314,22 +304,3 @@ class TransactionQueue(object):
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# Check to see if there is anything else to send.
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self._attempt_new_transaction(destination)
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@defer.inlineCallbacks
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def set_retrying(self, destination, retry_interval):
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# track that this destination is having problems and we should
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# give it a chance to recover before trying it again
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if retry_interval:
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retry_interval *= 2
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# plateau at hourly retries for now
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if retry_interval >= 60 * 60 * 1000:
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retry_interval = 60 * 60 * 1000
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else:
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retry_interval = 2000 # try again at first after 2 seconds
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yield self.store.set_destination_retry_timings(
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destination,
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int(self._clock.time_msec()),
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retry_interval
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)
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