Leo Hemsted b01ec05aaf run migrations if app is down ...

normally we check the app's status page to see if migrations need
running. However, if the _status endpoint doesn't respond with 200, we
don't necessarily want to abort the deploy - we may be trying to deploy
a code fix that fixes that status endpoint for example.

We don't know whether to run the migrations or not, so err on the side
of caution by re-running the migration. The migration itself might be
the fix that gets the app working after all.

had to do a little song and dance because sometimes the response won't
be populated before an exception is thrown

2020-06-26 15:28:28 +01:00

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