Fix exceptions when a connection is closed before we read the headers

This fixes bugs introduced in #3700, by making sure that we behave sanely
when an incoming connection is closed before the headers are read.
This commit is contained in:
Richard van der Hoff 2018-08-20 18:21:10 +01:00
parent 55e6bdf287
commit be6527325a
2 changed files with 10 additions and 2 deletions

View File

@ -182,7 +182,7 @@ class SynapseRequest(Request):
# the client disconnects.
with PreserveLoggingContext(self.logcontext):
logger.warn(
"Error processing request: %s %s", reason.type, reason.value,
"Error processing request %r: %s %s", self, reason.type, reason.value,
)
if not self._is_processing:
@ -219,6 +219,12 @@ class SynapseRequest(Request):
"""Log the completion of this request and update the metrics
"""
if self.logcontext is None:
# this can happen if the connection closed before we read the
# headers (so render was never called). In that case we'll already
# have logged a warning, so just bail out.
return
usage = self.logcontext.get_resource_usage()
if self._processing_finished_time is None:

View File

@ -402,7 +402,9 @@ class PreserveLoggingContext(object):
__slots__ = ["current_context", "new_context", "has_parent"]
def __init__(self, new_context=LoggingContext.sentinel):
def __init__(self, new_context=None):
if new_context is None:
new_context = LoggingContext.sentinel
self.new_context = new_context
def __enter__(self):