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Merge pull request #1000 from matrix-org/erikj/contexts
Clean up TransactionQueue
This commit is contained in:
Erik Johnston
GitHub
commit
5202679edc
4 changed files with 167 additions and 224 deletions
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@ -21,8 +21,7 @@ from .units import Transaction
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from synapse.api.errors import HttpResponseException
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from synapse.util.async import run_on_reactor
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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.logcontext import preserve_context_over_fn
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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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@ -120,90 +119,46 @@ class TransactionQueue(object):
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if not destinations:
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return
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deferreds = []
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for destination in destinations:
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deferred = defer.Deferred()
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self.pending_pdus_by_dest.setdefault(destination, []).append(
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(pdu, deferred, order)
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(pdu, order)
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)
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def chain(failure):
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if not deferred.called:
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deferred.errback(failure)
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preserve_context_over_fn(
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self._attempt_new_transaction, destination
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)
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def log_failure(f):
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logger.warn("Failed to send pdu to %s: %s", destination, f.value)
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deferred.addErrback(log_failure)
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with PreserveLoggingContext():
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self._attempt_new_transaction(destination).addErrback(chain)
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deferreds.append(deferred)
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# NO inlineCallbacks
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def enqueue_edu(self, edu):
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destination = edu.destination
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if not self.can_send_to(destination):
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return
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deferred = defer.Deferred()
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self.pending_edus_by_dest.setdefault(destination, []).append(
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(edu, deferred)
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self.pending_edus_by_dest.setdefault(destination, []).append(edu)
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preserve_context_over_fn(
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self._attempt_new_transaction, destination
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)
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def chain(failure):
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if not deferred.called:
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deferred.errback(failure)
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def log_failure(f):
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logger.warn("Failed to send edu to %s: %s", destination, f.value)
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deferred.addErrback(log_failure)
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with PreserveLoggingContext():
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self._attempt_new_transaction(destination).addErrback(chain)
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return deferred
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@defer.inlineCallbacks
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def enqueue_failure(self, failure, destination):
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if destination == self.server_name or destination == "localhost":
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return
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deferred = defer.Deferred()
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if not self.can_send_to(destination):
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return
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self.pending_failures_by_dest.setdefault(
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destination, []
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).append(
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(failure, deferred)
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).append(failure)
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preserve_context_over_fn(
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self._attempt_new_transaction, destination
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)
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def chain(f):
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if not deferred.called:
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deferred.errback(f)
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def log_failure(f):
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logger.warn("Failed to send failure to %s: %s", destination, f.value)
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deferred.addErrback(log_failure)
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with PreserveLoggingContext():
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self._attempt_new_transaction(destination).addErrback(chain)
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yield deferred
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@measure_func("attempt_new_transaction")
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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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yield run_on_reactor()
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while True:
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# list of (pending_pdu, deferred, order)
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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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@ -228,22 +183,26 @@ class TransactionQueue(object):
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logger.debug("TX [%s] Nothing to send", destination)
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return
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yield self._send_new_transaction(
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destination, pending_pdus, pending_edus, pending_failures
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)
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@measure_func("_send_new_transaction")
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@defer.inlineCallbacks
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def _send_new_transaction(self, destination, pending_pdus, pending_edus,
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pending_failures):
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# Sort based on the order field
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pending_pdus.sort(key=lambda t: t[1])
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pdus = [x[0] for x in pending_pdus]
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edus = pending_edus
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failures = [x.get_dict() for x in pending_failures]
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try:
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self.pending_transactions[destination] = 1
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logger.debug("TX [%s] _attempt_new_transaction", destination)
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# Sort based on the order field
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pending_pdus.sort(key=lambda t: t[2])
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pdus = [x[0] for x in pending_pdus]
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edus = [x[0] for x in pending_edus]
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failures = [x[0].get_dict() for x in pending_failures]
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deferreds = [
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x[1]
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for x in pending_pdus + pending_edus + pending_failures
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]
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txn_id = str(self._next_txn_id)
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limiter = yield get_retry_limiter(
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@ -335,22 +294,11 @@ class TransactionQueue(object):
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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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deferred.callback(None)
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else:
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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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# deferred have fired
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try:
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yield deferred
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except:
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pass
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logger.debug("TX [%s] Yielded to callbacks", destination)
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if code != 200:
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for p in pdus:
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logger.info(
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"Failed to send event %s to %s", p.event_id, destination
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)
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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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@ -365,6 +313,9 @@ class TransactionQueue(object):
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destination,
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e,
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)
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for p in pdus:
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logger.info("Failed to send event %s to %s", p.event_id, destination)
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except Exception 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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@ -374,13 +325,9 @@ class TransactionQueue(object):
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e,
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)
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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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for p in pdus:
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logger.info("Failed to send event %s to %s", p.event_id, destination)
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finally:
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# We want to be *very* sure we delete this after we stop processing
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self.pending_transactions.pop(destination, None)
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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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@ -155,9 +155,7 @@ class MatrixFederationHttpClient(object):
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time_out=timeout / 1000. if timeout else 60,
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)
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response = yield preserve_context_over_fn(
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send_request,
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)
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response = yield preserve_context_over_fn(send_request)
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log_result = "%d %s" % (response.code, response.phrase,)
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break
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@ -317,7 +317,6 @@ def preserve_fn(f):
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def g(*args, **kwargs):
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with PreserveLoggingContext(current):
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return f(*args, **kwargs)
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return g
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@ -78,7 +78,6 @@ class Measure(object):
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self.start = self.clock.time_msec()
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self.start_context = LoggingContext.current_context()
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if not self.start_context:
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logger.warn("Entered Measure without log context: %s", self.name)
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self.start_context = LoggingContext("Measure")
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self.start_context.__enter__()
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self.created_context = True
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@ -99,7 +98,7 @@ class Measure(object):
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if context != self.start_context:
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logger.warn(
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"Context has unexpectedly changed from '%s' to '%s'. (%r)",
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context, self.start_context, self.name
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self.start_context, context, self.name
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)
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return
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