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Avoid race condition when streaming deleted statuses (#10280)

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* Avoid race condition when streaming deleted statuses

* Move redis lock to DistributionWorker to avoid extra Redis value
This commit is contained in:
ThibG 2019-03-16 20:18:47 +01:00 • committed by Eugen Rochko
parent db06b25376
commit 6b0eda14a1
2 changed files with 26 additions and 10 deletions
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8
app/workers/distribution_worker.rb
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@ -4,7 +4,13 @@ class DistributionWorker
include Sidekiq::Worker
def perform(status_id)
FanOutOnWriteService.new.call(Status.find(status_id))
RedisLock.acquire(redis: Redis.current, key: "distribute:#{status_id}") do |lock|
if lock.acquired?
FanOutOnWriteService.new.call(Status.find(status_id))
else
raise Mastodon::RaceConditionError
end
end
rescue ActiveRecord::RecordNotFound
true
end