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Fix exception handling in fetching remote profiles #3997

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merged 2 commits into from Oct 3, 2018

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erikjohnston commented Oct 3, 2018

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 None rather than raising an exception, and for avatars we'd throw an UnboundLocalError due to trying to return result["avatar_url"] despite not having result.

We will still log the exceptions, but just further up the stack

erikjohnston added some commits Oct 3, 2018

@erikjohnston erikjohnston requested a review from matrix-org/synapse-core Oct 3, 2018

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erikjohnston commented Oct 3, 2018

(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)

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richvdh approved these changes Oct 3, 2018

lgtm

@erikjohnston erikjohnston merged commit 01afcfc into develop Oct 3, 2018

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michaelkaye added a commit that referenced this pull request Oct 22, 2018

Merge tag 'v0.33.7' into dinsic
**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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