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Allow higher amount of restarts for Pleroma.Repo during testing

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This was done by floatingghost as part of a bigger commit in Akkoma.
See <37ae047e16/lib/pleroma/application.ex (L83)>.

As explained in <https://ihatebeinga.live/objects/860d23e1-dc64-4b07-8b4d-020b9c56cff6>

> there are so many caches that clearing them all can nuke the supervisor, which by default will become an hero if it gets more than 3 restarts in <5 seconds

And further down the thread

> essentially we've got like 11 caches (37ae047e16/lib/pleroma/application.ex (L165))
> then in test we fetch them all (https://akkoma.dev/AkkomaGang/akkoma/src/branch/develop/test/support/data_case.ex#L50) and call clear on them
> so if this clear fails on any 3 of them, the pleroma supervisor itself will die

How it fails?

> idk maybe cachex dies, maybe :ets does a weird thing
> it doesn't log anything, it just consistently dies during cache clearing so i figured it had to be that

> honestly my best bet is locksmith and queuing
> https://github.com/whitfin/cachex/blob/master/lib/cachex/actions/clear.ex#L26
> clear is thrown into a locksmith transaction

> locksmith says
> >If the process is already in a transactional context, the provided function will be executed immediately. Otherwise the required keys will be locked until the provided function has finished executing.

> so if we get 2 clears too close together, maybe it locks, then doesn't like the next clear?
This commit is contained in:
floatingghost 2022-07-14 13:35:33 +02:00 committed by Ilja
parent 3fb9171694
commit 28626eafc1
1 changed files with 11 additions and 1 deletions
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12
lib/pleroma/application.ex
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@ -112,7 +112,17 @@ def start(_type, _args) do
# See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
# for other strategies and supported options
opts = [strategy: :one_for_one, name: Pleroma.Supervisor]
# If we have a lot of caches, default max_restarts can cause test
# resets to fail.
# Go for the default 3 unless we're in test
max_restarts =
if @mix_env == :test do
100
else
3
end
opts = [strategy: :one_for_one, name: Pleroma.Supervisor, max_restarts: max_restarts]
result = Supervisor.start_link(children, opts)
set_postgres_server_version()