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try not to drop context after federation requests

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preserve_context_over_fn uses a ContextPreservingDeferred, which only restores
context for the duration of its callbacks, which isn't really correct, and
means that subsequent operations in the same request can end up without their
logcontexts.
This commit is contained in:
Richard van der Hoff 2017-03-23 10:03:47 +00:00
parent 9397edb28b
commit a380f041c2
1 changed files with 16 additions and 12 deletions
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28
synapse/http/matrixfederationclient.py
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@ -21,7 +21,7 @@ from twisted.web._newclient import ResponseDone
from synapse.http.endpoint import matrix_federation_endpoint from synapse.http.endpoint import matrix_federation_endpoint
from synapse.util.async import sleep from synapse.util.async import sleep
from synapse.util.logcontext import preserve_context_over_fn from synapse.util import logcontext
import synapse.metrics import synapse.metrics
from canonicaljson import encode_canonical_json from canonicaljson import encode_canonical_json
@ -172,8 +172,7 @@ class MatrixFederationHttpClient(object):
try: try:
def send_request(): def send_request():
request_deferred = preserve_context_over_fn( request_deferred = self.agent.request(
self.agent.request,
method, method,
url_bytes, url_bytes,
Headers(headers_dict), Headers(headers_dict),
@ -185,7 +184,8 @@ class MatrixFederationHttpClient(object):
time_out=timeout / 1000. if timeout else 60, time_out=timeout / 1000. if timeout else 60,
) )
response = yield preserve_context_over_fn(send_request) with logcontext.PreserveLoggingContext():
response = yield send_request()
log_result = "%d %s" % (response.code, response.phrase,) log_result = "%d %s" % (response.code, response.phrase,)
break break
@ -242,7 +242,8 @@ class MatrixFederationHttpClient(object):
else: else:
# :'( # :'(
# Update transactions table? # Update transactions table?
body = yield preserve_context_over_fn(readBody, response) with logcontext.PreserveLoggingContext():
body = yield readBody(response)
raise HttpResponseException( raise HttpResponseException(
response.code, response.phrase, body response.code, response.phrase, body
) )
@ -336,7 +337,8 @@ class MatrixFederationHttpClient(object):
# We need to update the transactions table to say it was sent? # We need to update the transactions table to say it was sent?
check_content_type_is_json(response.headers) check_content_type_is_json(response.headers)
body = yield preserve_context_over_fn(readBody, response) with logcontext.PreserveLoggingContext():
body = yield readBody(response)
defer.returnValue(json.loads(body)) defer.returnValue(json.loads(body))
@defer.inlineCallbacks @defer.inlineCallbacks
@ -386,7 +388,8 @@ class MatrixFederationHttpClient(object):
# We need to update the transactions table to say it was sent? # We need to update the transactions table to say it was sent?
check_content_type_is_json(response.headers) check_content_type_is_json(response.headers)
body = yield preserve_context_over_fn(readBody, response) with logcontext.PreserveLoggingContext():
body = yield readBody(response)
defer.returnValue(json.loads(body)) defer.returnValue(json.loads(body))
@ -445,7 +448,8 @@ class MatrixFederationHttpClient(object):
# We need to update the transactions table to say it was sent? # We need to update the transactions table to say it was sent?
check_content_type_is_json(response.headers) check_content_type_is_json(response.headers)
body = yield preserve_context_over_fn(readBody, response) with logcontext.PreserveLoggingContext():
body = yield readBody(response)
defer.returnValue(json.loads(body)) defer.returnValue(json.loads(body))
@ -498,10 +502,10 @@ class MatrixFederationHttpClient(object):
headers = dict(response.headers.getAllRawHeaders()) headers = dict(response.headers.getAllRawHeaders())
try: try:
length = yield preserve_context_over_fn( with logcontext.PreserveLoggingContext():
_readBodyToFile, length = yield _readBodyToFile(
response, output_stream, max_size response, output_stream, max_size
) )
except: except:
logger.exception("Failed to download body") logger.exception("Failed to download body")
raise raise