84 lines
1.2 KiB
Ruby
84 lines
1.2 KiB
Ruby
require 'thread'
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class SidekiqPauser
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def initialize
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@mutex = Mutex.new
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end
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def pause!
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redis.setex paused_key, 60, "paused"
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@mutex.synchronize do
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@extend_lease_thread ||= extend_lease_thread
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sleep 0.001 while !paused?
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end
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true
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end
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def paused?
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!!redis.get(paused_key)
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end
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def unpause!
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@mutex.synchronize do
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@extend_lease_thread = nil
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end
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redis.del(paused_key)
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true
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end
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private
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def extend_lease_thread
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Thread.new do
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while true do
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break unless @mutex.synchronize { @extend_lease_thread }
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redis.expire paused_key, 60
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sleep 30
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end
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end
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end
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def redis
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$redis.without_namespace
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end
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def paused_key
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"sidekiq_is_paused_v2"
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end
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end
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module Sidekiq
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@pauser = SidekiqPauser.new
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def self.pause!
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@pauser.pause!
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end
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def self.paused?
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@pauser.paused?
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end
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def self.unpause!
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@pauser.unpause!
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end
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end
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# server middleware that will reschedule work whenever Sidekiq is paused
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class Sidekiq::Pausable
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def initialize(delay = 5.seconds)
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@delay = delay
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end
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def call(worker, msg, queue)
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if Sidekiq.paused?
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worker.class.perform_in(@delay, *msg['args'])
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else
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yield
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end
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end
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end
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