Add support for sending failures

pull/12/head
Erik Johnston 2014-11-04 14:17:55 +00:00
parent d7412c4df1
commit 440cbd5235
3 changed files with 63 additions and 2 deletions

View File

@ -143,6 +143,11 @@ class ReplicationLayer(object):
self._transaction_queue.enqueue_edu(edu)
return defer.succeed(None)
@log_function
def send_failure(self, failure, destination):
self._transaction_queue.enqueue_failure(failure, destination)
return defer.succeed(None)
@log_function
def make_query(self, destination, query_type, args,
retry_on_dns_fail=True):
@ -558,6 +563,9 @@ class _TransactionQueue(object):
# destination -> list of tuple(edu, deferred)
self.pending_edus_by_dest = {}
# destination -> list of tuple(failure, deferred)
self.pending_failures_by_dest = {}
# HACK to get unique tx id
self._next_txn_id = int(self._clock.time_msec())
@ -610,6 +618,18 @@ class _TransactionQueue(object):
return deferred
@defer.inlineCallbacks
def enqueue_failure(self, failure, destination):
deferred = defer.Deferred()
self.pending_failures_by_dest.setdefault(
destination, []
).append(
(failure, deferred)
)
yield deferred
@defer.inlineCallbacks
@log_function
def _attempt_new_transaction(self, destination):
@ -619,8 +639,9 @@ class _TransactionQueue(object):
# list of (pending_pdu, deferred, order)
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(destination, [])
if not pending_pdus and not pending_edus:
if not pending_pdus and not pending_edus and not pending_failures:
return
logger.debug("TX [%s] Attempting new transaction", destination)
@ -630,7 +651,11 @@ class _TransactionQueue(object):
pdus = [x[0] for x in pending_pdus]
edus = [x[0] for x in pending_edus]
deferreds = [x[1] for x in pending_pdus + pending_edus]
failures = [x[0].get_dict() for x in pending_failures]
deferreds = [
x[1]
for x in pending_pdus + pending_edus + pending_failures
]
try:
self.pending_transactions[destination] = 1
@ -644,6 +669,7 @@ class _TransactionQueue(object):
destination=destination,
pdus=pdus,
edus=edus,
pdu_failures=failures,
)
self._next_txn_id += 1

View File

@ -157,6 +157,7 @@ class Transaction(JsonEncodedObject):
"edus",
"transaction_id",
"destination",
"pdu_failures",
]
internal_keys = [

View File

@ -128,3 +128,37 @@ class StreamToken(
d = self._asdict()
d[key] = new_value
return StreamToken(**d)
class FederationError(RuntimeError):
""" This class is used to inform remote home servers about erroneous
PDUs they sent us.
FATAL: The remote server could not interpret the source event.
(e.g., it was missing a required field)
ERROR: The remote server interpreted the event, but it failed some other
check (e.g. auth)
WARN: The remote server accepted the event, but believes some part of it
is wrong (e.g., it referred to an invalid event)
"""
def __init__(self, level, code, reason, affected, source=None):
if level not in ["FATAL", "ERROR", "WARN"]:
raise ValueError("Level is not valid: %s" % (level,))
self.level = level
self.code = code
self.reason = reason
self.affected = affected
self.source = source
msg = "%s %s: %s" % (level, code, reason,)
super(FederationError, self).__init__(msg)
def get_dict(self):
return {
"level": self.level,
"code": self.code,
"reason": self.reason,
"affected": self.affected,
"source": self.source if self.source else self.affected,
}