catstodon/app/models/concerns/lockable.rb

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# frozen_string_literal: true
module Lockable
# @param [String] lock_name
# @param [ActiveSupport::Duration] autorelease Automatically release the lock after this time
# @param [Boolean] raise_on_failure Raise an error if a lock cannot be acquired, or fail silently
# @raise [Mastodon::RaceConditionError]
def with_redis_lock(lock_name, autorelease: 15.minutes, raise_on_failure: true)
with_redis do |redis|
RedisLock.acquire(redis: redis, key: "lock:#{lock_name}", autorelease: autorelease.seconds) do |lock|
if lock.acquired?
yield
elsif raise_on_failure
raise Mastodon::RaceConditionError, "Could not acquire lock for #{lock_name}, try again later"
end
end
end
end
end