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2b8d4508e5
Use a dedicated thread to run Scheduler::Defer This avoids blocking of a worker during operations that require waiting. In particular uploads risked blocking a unicorn. This also add a queue "length" that discourse prometheus consumes.
88 lines
1.2 KiB
Ruby
88 lines
1.2 KiB
Ruby
# encoding: utf-8
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require 'rails_helper'
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require_dependency 'scheduler/defer'
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describe Scheduler::Defer do
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class DeferInstance
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include Scheduler::Deferrable
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end
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def wait_for(timeout, &blk)
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till = Time.now + (timeout.to_f / 1000)
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while Time.now < till && !blk.call
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sleep 0.001
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end
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end
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before do
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@defer = DeferInstance.new
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@defer.async = true
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end
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after do
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@defer.stop!
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end
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it "can pause and resume" do
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x = 1
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@defer.pause
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@defer.later do
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x = 2
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end
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expect(@defer.length).to eq(1)
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@defer.do_all_work
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expect(x).to eq(2)
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@defer.resume
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@defer.later do
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x = 3
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end
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wait_for(10) do
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x == 3
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end
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expect(x).to eq(3)
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end
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it "recovers from a crash / fork" do
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s = nil
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@defer.stop!
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wait_for(10) do
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@defer.stopped?
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end
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# hack allow thread to die
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sleep 0.005
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@defer.later do
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s = "good"
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end
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wait_for(10) do
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s == "good"
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end
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expect(s).to eq("good")
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end
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it "can queue jobs properly" do
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s = nil
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@defer.later do
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s = "good"
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end
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wait_for(10) do
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s == "good"
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end
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expect(s).to eq("good")
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end
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end
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