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Fix exception handling in fetching remote profiles#3997
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(We probably can clean some of this exception handling up a bit more so that we don't log stack traces simply because we failed to connect to the remote server, but I'm punting that for now) |
michaelkaye
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Oct 22, 2018
**Warning**: This release removes the example email notification templates from `res/templates` (they are now internal to the python package). This should only affect you if you (a) deploy your Synapse instance from a git checkout or a github snapshot URL, and (b) have email notifications enabled. If you have email notifications enabled, you should ensure that `email.template_dir` is either configured to point at a directory where you have installed customised templates, or leave it unset to use the default templates. The configuration parser will try to detect the situation where `email.template_dir` is incorrectly set to `res/templates` and do the right thing, but will warn about this. Features -------- - Ship the example email templates as part of the package ([\#4052](#4052)) - Add support for end-to-end key backup (MSC1687) ([\#4019](#4019)) Bugfixes -------- - Fix bug which made get_missing_events return too few events ([\#4045](#4045)) - Fix bug in event persistence logic which caused 'NoneType is not iterable' ([\#3995](#3995)) - Fix exception in background metrics collection ([\#3996](#3996)) - Fix exception handling in fetching remote profiles ([\#3997](#3997)) - Fix handling of rejected threepid invites ([\#3999](#3999)) - Workers now start on Python 3. ([\#4027](#4027)) - Synapse now starts on Python 3.7. ([\#4033](#4033)) Internal Changes ---------------- - Log exceptions in looping calls ([\#4008](#4008)) - Optimisation for serving federation requests ([\#4017](#4017)) - Add metric to count number of non-empty sync responses ([\#4022](#4022))
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We were just catching the exceptions, logging and dropping them on the floor. This meant that in the case of fetching display name we returned a
Nonerather than raising an exception, and for avatars we'd throw anUnboundLocalErrordue to trying to returnresult["avatar_url"]despite not havingresult.We will still log the exceptions, but just further up the stack