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Merge pull request #3727 from matrix-org/erikj/dont_error_on_missing_keys

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Don't log exceptions when failing to fetch server keys
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Erik Johnston 2018-08-21 17:07:20 +01:00 committed by GitHub
commit 46c832eaac
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3 changed files with 10 additions and 5 deletions
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1
changelog.d/3727.misc Normal file
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@ -0,0 +1 @@
Log failure to authenticate remote servers as warnings (without stack traces)

8
synapse/crypto/keyclient.py
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@ -18,7 +18,9 @@ import logging
from canonicaljson import json
from twisted.internet import defer, reactor
from twisted.internet.error import ConnectError
from twisted.internet.protocol import Factory
from twisted.names.error import DomainError
from twisted.web.http import HTTPClient
from synapse.http.endpoint import matrix_federation_endpoint
@ -47,12 +49,14 @@ def fetch_server_key(server_name, tls_client_options_factory, path=KEY_API_V1):
server_response, server_certificate = yield protocol.remote_key
defer.returnValue((server_response, server_certificate))
except SynapseKeyClientError as e:
logger.exception("Error getting key for %r" % (server_name,))
logger.warn("Error getting key for %r: %s", server_name, e)
if e.status.startswith("4"):
# Don't retry for 4xx responses.
raise IOError("Cannot get key for %r" % server_name)
except (ConnectError, DomainError) as e:
logger.warn("Error getting key for %r: %s", server_name, e)
except Exception as e:
logger.exception(e)
logger.exception("Error getting key for %r", server_name)
raise IOError("Cannot get key for %r" % server_name)

6
synapse/federation/transport/server.py
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@ -261,10 +261,10 @@ class BaseFederationServlet(object):
except NoAuthenticationError:
origin = None
if self.REQUIRE_AUTH:
logger.exception("authenticate_request failed")
logger.warn("authenticate_request failed: missing authentication")
raise
except Exception:
logger.exception("authenticate_request failed")
except Exception as e:
logger.warn("authenticate_request failed: %s", e)
raise
if origin: