Merge pull request #1000 from matrix-org/erikj/contexts

Clean up TransactionQueue
pull/1003/head
Erik Johnston 2016-08-11 09:34:12 +01:00 committed by GitHub
commit 5202679edc
4 changed files with 167 additions and 224 deletions

View File

@ -21,8 +21,7 @@ from .units import Transaction
from synapse.api.errors import HttpResponseException
from synapse.util.async import run_on_reactor
from synapse.util.logutils import log_function
from synapse.util.logcontext import PreserveLoggingContext
from synapse.util.logcontext import preserve_context_over_fn
from synapse.util.retryutils import (
get_retry_limiter, NotRetryingDestination,
)
@ -120,267 +119,215 @@ class TransactionQueue(object):
if not destinations:
return
deferreds = []
for destination in destinations:
deferred = defer.Deferred()
self.pending_pdus_by_dest.setdefault(destination, []).append(
(pdu, deferred, order)
(pdu, order)
)
def chain(failure):
if not deferred.called:
deferred.errback(failure)
preserve_context_over_fn(
self._attempt_new_transaction, destination
)
def log_failure(f):
logger.warn("Failed to send pdu to %s: %s", destination, f.value)
deferred.addErrback(log_failure)
with PreserveLoggingContext():
self._attempt_new_transaction(destination).addErrback(chain)
deferreds.append(deferred)
# NO inlineCallbacks
def enqueue_edu(self, edu):
destination = edu.destination
if not self.can_send_to(destination):
return
deferred = defer.Deferred()
self.pending_edus_by_dest.setdefault(destination, []).append(
(edu, deferred)
self.pending_edus_by_dest.setdefault(destination, []).append(edu)
preserve_context_over_fn(
self._attempt_new_transaction, destination
)
def chain(failure):
if not deferred.called:
deferred.errback(failure)
def log_failure(f):
logger.warn("Failed to send edu to %s: %s", destination, f.value)
deferred.addErrback(log_failure)
with PreserveLoggingContext():
self._attempt_new_transaction(destination).addErrback(chain)
return deferred
@defer.inlineCallbacks
def enqueue_failure(self, failure, destination):
if destination == self.server_name or destination == "localhost":
return
deferred = defer.Deferred()
if not self.can_send_to(destination):
return
self.pending_failures_by_dest.setdefault(
destination, []
).append(
(failure, deferred)
).append(failure)
preserve_context_over_fn(
self._attempt_new_transaction, destination
)
def chain(f):
if not deferred.called:
deferred.errback(f)
def log_failure(f):
logger.warn("Failed to send failure to %s: %s", destination, f.value)
deferred.addErrback(log_failure)
with PreserveLoggingContext():
self._attempt_new_transaction(destination).addErrback(chain)
yield deferred
@measure_func("attempt_new_transaction")
@defer.inlineCallbacks
@log_function
def _attempt_new_transaction(self, destination):
yield run_on_reactor()
while True:
# list of (pending_pdu, deferred, order)
if destination in self.pending_transactions:
# XXX: pending_transactions can get stuck on by a never-ending
# request at which point pending_pdus_by_dest just keeps growing.
# we need application-layer timeouts of some flavour of these
# requests
logger.debug(
"TX [%s] Transaction already in progress",
destination
)
return
# list of (pending_pdu, deferred, order)
if destination in self.pending_transactions:
# XXX: pending_transactions can get stuck on by a never-ending
# request at which point pending_pdus_by_dest just keeps growing.
# we need application-layer timeouts of some flavour of these
# requests
logger.debug(
"TX [%s] Transaction already in progress",
destination
pending_pdus = self.pending_pdus_by_dest.pop(destination, [])
pending_edus = self.pending_edus_by_dest.pop(destination, [])
pending_failures = self.pending_failures_by_dest.pop(destination, [])
if pending_pdus:
logger.debug("TX [%s] len(pending_pdus_by_dest[dest]) = %d",
destination, len(pending_pdus))
if not pending_pdus and not pending_edus and not pending_failures:
logger.debug("TX [%s] Nothing to send", destination)
return
yield self._send_new_transaction(
destination, pending_pdus, pending_edus, pending_failures
)
return
pending_pdus = self.pending_pdus_by_dest.pop(destination, [])
pending_edus = self.pending_edus_by_dest.pop(destination, [])
pending_failures = self.pending_failures_by_dest.pop(destination, [])
if pending_pdus:
logger.debug("TX [%s] len(pending_pdus_by_dest[dest]) = %d",
destination, len(pending_pdus))
if not pending_pdus and not pending_edus and not pending_failures:
logger.debug("TX [%s] Nothing to send", destination)
return
try:
self.pending_transactions[destination] = 1
logger.debug("TX [%s] _attempt_new_transaction", destination)
@measure_func("_send_new_transaction")
@defer.inlineCallbacks
def _send_new_transaction(self, destination, pending_pdus, pending_edus,
pending_failures):
# Sort based on the order field
pending_pdus.sort(key=lambda t: t[2])
pending_pdus.sort(key=lambda t: t[1])
pdus = [x[0] for x in pending_pdus]
edus = [x[0] for x in pending_edus]
failures = [x[0].get_dict() for x in pending_failures]
deferreds = [
x[1]
for x in pending_pdus + pending_edus + pending_failures
]
edus = pending_edus
failures = [x.get_dict() for x in pending_failures]
txn_id = str(self._next_txn_id)
try:
self.pending_transactions[destination] = 1
limiter = yield get_retry_limiter(
destination,
self.clock,
self.store,
)
logger.debug("TX [%s] _attempt_new_transaction", destination)
logger.debug(
"TX [%s] {%s} Attempting new transaction"
" (pdus: %d, edus: %d, failures: %d)",
destination, txn_id,
len(pending_pdus),
len(pending_edus),
len(pending_failures)
)
txn_id = str(self._next_txn_id)
logger.debug("TX [%s] Persisting transaction...", destination)
transaction = Transaction.create_new(
origin_server_ts=int(self.clock.time_msec()),
transaction_id=txn_id,
origin=self.server_name,
destination=destination,
pdus=pdus,
edus=edus,
pdu_failures=failures,
)
self._next_txn_id += 1
yield self.transaction_actions.prepare_to_send(transaction)
logger.debug("TX [%s] Persisted transaction", destination)
logger.info(
"TX [%s] {%s} Sending transaction [%s],"
" (PDUs: %d, EDUs: %d, failures: %d)",
destination, txn_id,
transaction.transaction_id,
len(pending_pdus),
len(pending_edus),
len(pending_failures),
)
with limiter:
# Actually send the transaction
# FIXME (erikj): This is a bit of a hack to make the Pdu age
# keys work
def json_data_cb():
data = transaction.get_dict()
now = int(self.clock.time_msec())
if "pdus" in data:
for p in data["pdus"]:
if "age_ts" in p:
unsigned = p.setdefault("unsigned", {})
unsigned["age"] = now - int(p["age_ts"])
del p["age_ts"]
return data
try:
response = yield self.transport_layer.send_transaction(
transaction, json_data_cb
)
code = 200
if response:
for e_id, r in response.get("pdus", {}).items():
if "error" in r:
logger.warn(
"Transaction returned error for %s: %s",
e_id, r,
)
except HttpResponseException as e:
code = e.code
response = e.response
logger.info(
"TX [%s] {%s} got %d response",
destination, txn_id, code
limiter = yield get_retry_limiter(
destination,
self.clock,
self.store,
)
logger.debug("TX [%s] Sent transaction", destination)
logger.debug("TX [%s] Marking as delivered...", destination)
logger.debug(
"TX [%s] {%s} Attempting new transaction"
" (pdus: %d, edus: %d, failures: %d)",
destination, txn_id,
len(pending_pdus),
len(pending_edus),
len(pending_failures)
)
yield self.transaction_actions.delivered(
transaction, code, response
)
logger.debug("TX [%s] Persisting transaction...", destination)
logger.debug("TX [%s] Marked as delivered", destination)
transaction = Transaction.create_new(
origin_server_ts=int(self.clock.time_msec()),
transaction_id=txn_id,
origin=self.server_name,
destination=destination,
pdus=pdus,
edus=edus,
pdu_failures=failures,
)
logger.debug("TX [%s] Yielding to callbacks...", destination)
self._next_txn_id += 1
for deferred in deferreds:
if code == 200:
deferred.callback(None)
else:
deferred.errback(RuntimeError("Got status %d" % code))
yield self.transaction_actions.prepare_to_send(transaction)
# Ensures we don't continue until all callbacks on that
# deferred have fired
try:
yield deferred
except:
pass
logger.debug("TX [%s] Persisted transaction", destination)
logger.info(
"TX [%s] {%s} Sending transaction [%s],"
" (PDUs: %d, EDUs: %d, failures: %d)",
destination, txn_id,
transaction.transaction_id,
len(pending_pdus),
len(pending_edus),
len(pending_failures),
)
logger.debug("TX [%s] Yielded to callbacks", destination)
except NotRetryingDestination:
logger.info(
"TX [%s] not ready for retry yet - "
"dropping transaction for now",
destination,
)
except RuntimeError as e:
# We capture this here as there as nothing actually listens
# for this finishing functions deferred.
logger.warn(
"TX [%s] Problem in _attempt_transaction: %s",
destination,
e,
)
except Exception as e:
# We capture this here as there as nothing actually listens
# for this finishing functions deferred.
logger.warn(
"TX [%s] Problem in _attempt_transaction: %s",
destination,
e,
)
with limiter:
# Actually send the transaction
for deferred in deferreds:
if not deferred.called:
deferred.errback(e)
# FIXME (erikj): This is a bit of a hack to make the Pdu age
# keys work
def json_data_cb():
data = transaction.get_dict()
now = int(self.clock.time_msec())
if "pdus" in data:
for p in data["pdus"]:
if "age_ts" in p:
unsigned = p.setdefault("unsigned", {})
unsigned["age"] = now - int(p["age_ts"])
del p["age_ts"]
return data
finally:
# We want to be *very* sure we delete this after we stop processing
self.pending_transactions.pop(destination, None)
try:
response = yield self.transport_layer.send_transaction(
transaction, json_data_cb
)
code = 200
# Check to see if there is anything else to send.
self._attempt_new_transaction(destination)
if response:
for e_id, r in response.get("pdus", {}).items():
if "error" in r:
logger.warn(
"Transaction returned error for %s: %s",
e_id, r,
)
except HttpResponseException as e:
code = e.code
response = e.response
logger.info(
"TX [%s] {%s} got %d response",
destination, txn_id, code
)
logger.debug("TX [%s] Sent transaction", destination)
logger.debug("TX [%s] Marking as delivered...", destination)
yield self.transaction_actions.delivered(
transaction, code, response
)
logger.debug("TX [%s] Marked as delivered", destination)
if code != 200:
for p in pdus:
logger.info(
"Failed to send event %s to %s", p.event_id, destination
)
except NotRetryingDestination:
logger.info(
"TX [%s] not ready for retry yet - "
"dropping transaction for now",
destination,
)
except RuntimeError as e:
# We capture this here as there as nothing actually listens
# for this finishing functions deferred.
logger.warn(
"TX [%s] Problem in _attempt_transaction: %s",
destination,
e,
)
for p in pdus:
logger.info("Failed to send event %s to %s", p.event_id, destination)
except Exception as e:
# We capture this here as there as nothing actually listens
# for this finishing functions deferred.
logger.warn(
"TX [%s] Problem in _attempt_transaction: %s",
destination,
e,
)
for p in pdus:
logger.info("Failed to send event %s to %s", p.event_id, destination)
finally:
# We want to be *very* sure we delete this after we stop processing
self.pending_transactions.pop(destination, None)

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@ -155,9 +155,7 @@ class MatrixFederationHttpClient(object):
time_out=timeout / 1000. if timeout else 60,
)
response = yield preserve_context_over_fn(
send_request,
)
response = yield preserve_context_over_fn(send_request)
log_result = "%d %s" % (response.code, response.phrase,)
break

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@ -317,7 +317,6 @@ def preserve_fn(f):
def g(*args, **kwargs):
with PreserveLoggingContext(current):
return f(*args, **kwargs)
return g

View File

@ -78,7 +78,6 @@ class Measure(object):
self.start = self.clock.time_msec()
self.start_context = LoggingContext.current_context()
if not self.start_context:
logger.warn("Entered Measure without log context: %s", self.name)
self.start_context = LoggingContext("Measure")
self.start_context.__enter__()
self.created_context = True
@ -99,7 +98,7 @@ class Measure(object):
if context != self.start_context:
logger.warn(
"Context has unexpectedly changed from '%s' to '%s'. (%r)",
context, self.start_context, self.name
self.start_context, context, self.name
)
return