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Merge branch 'keyclient_retry_scheme' of github.com:matrix-org/synapse into develop

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This commit is contained in:
Erik Johnston 2015-02-18 10:34:40 +00:00
commit 1be67eca8a
4 changed files with 246 additions and 101 deletions
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143
synapse/federation/transaction_queue.py
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@ -22,6 +22,9 @@ from .units import Transaction
from synapse.api.errors import HttpResponseException
from synapse.util.logutils import log_function
from synapse.util.logcontext import PreserveLoggingContext
from synapse.util.retryutils import (
get_retry_limiter, NotRetryingDestination,
)
import logging
@ -147,25 +150,6 @@ class TransactionQueue(object):
@defer.inlineCallbacks
@log_function
def _attempt_new_transaction(self, destination):
(retry_last_ts, retry_interval) = (0, 0)
retry_timings = yield self.store.get_destination_retry_timings(
destination
)
if retry_timings:
(retry_last_ts, retry_interval) = (
retry_timings.retry_last_ts, retry_timings.retry_interval
)
if retry_last_ts + retry_interval > int(self._clock.time_msec()):
logger.info(
"TX [%s] not ready for retry yet - "
"dropping transaction for now",
destination,
)
return
else:
logger.info("TX [%s] is ready for retry", destination)
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.
@ -192,15 +176,6 @@ class TransactionQueue(object):
logger.info("TX [%s] Nothing to send", destination)
return
logger.debug(
"TX [%s] Attempting new transaction"
" (pdus: %d, edus: %d, failures: %d)",
destination,
len(pending_pdus),
len(pending_edus),
len(pending_failures)
)
# Sort based on the order field
pending_pdus.sort(key=lambda t: t[2])
@ -213,6 +188,21 @@ class TransactionQueue(object):
]
try:
limiter = yield get_retry_limiter(
destination,
self._clock,
self.store,
)
logger.debug(
"TX [%s] Attempting new transaction"
" (pdus: %d, edus: %d, failures: %d)",
destination,
len(pending_pdus),
len(pending_edus),
len(pending_failures)
)
self.pending_transactions[destination] = 1
logger.debug("TX [%s] Persisting transaction...", destination)
@ -238,61 +228,57 @@ class TransactionQueue(object):
transaction.transaction_id,
)
# Actually send the transaction
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
# 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
try:
response = yield self.transport_layer.send_transaction(
transaction, json_data_cb
)
code = 200
if response:
for e_id, r in getattr(response, "pdus", {}).items():
if "error" in r:
logger.warn(
"Transaction returned error for %s: %s",
e_id, r,
)
if response:
for e_id, r in getattr(response, "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
except HttpResponseException as e:
code = e.code
response = e.response
logger.info("TX [%s] got %d response", destination, code)
logger.info("TX [%s] got %d response", destination, code)
logger.debug("TX [%s] Sent transaction", destination)
logger.debug("TX [%s] Marking as delivered...", destination)
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)
logger.debug("TX [%s] Yielding to callbacks...", destination)
for deferred in deferreds:
if code == 200:
if retry_last_ts:
# this host is alive! reset retry schedule
yield self.store.set_destination_retry_timings(
destination, 0, 0
)
deferred.callback(None)
else:
self.set_retrying(destination, retry_interval)
deferred.errback(RuntimeError("Got status %d" % code))
# Ensures we don't continue until all callbacks on that
@ -303,6 +289,12 @@ class TransactionQueue(object):
pass
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.
@ -320,8 +312,6 @@ class TransactionQueue(object):
e,
)
self.set_retrying(destination, retry_interval)
for deferred in deferreds:
if not deferred.called:
deferred.errback(e)
@ -332,22 +322,3 @@ class TransactionQueue(object):
# Check to see if there is anything else to send.
self._attempt_new_transaction(destination)
@defer.inlineCallbacks
def set_retrying(self, destination, retry_interval):
# track that this destination is having problems and we should
# give it a chance to recover before trying it again
if retry_interval:
retry_interval *= 2
# plateau at hourly retries for now
if retry_interval >= 60 * 60 * 1000:
retry_interval = 60 * 60 * 1000
else:
retry_interval = 2000 # try again at first after 2 seconds
yield self.store.set_destination_retry_timings(
destination,
int(self._clock.time_msec()),
retry_interval
)