mirror of
https://github.com/discourse/discourse.git
synced 2024-11-26 02:40:53 -06:00
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
|
|
require 'rails_helper'
|
|
require_dependency 'scheduler/defer'
|
|
|
|
describe Scheduler::Defer do
|
|
class DeferInstance
|
|
include Scheduler::Deferrable
|
|
end
|
|
|
|
def wait_for(timeout, &blk)
|
|
till = Time.now + (timeout.to_f / 1000)
|
|
while Time.now < till && !blk.call
|
|
sleep 0.001
|
|
end
|
|
end
|
|
|
|
before do
|
|
@defer = DeferInstance.new
|
|
@defer.async = true
|
|
end
|
|
|
|
after do
|
|
@defer.stop!
|
|
end
|
|
|
|
it "can pause and resume" do
|
|
x = 1
|
|
@defer.pause
|
|
|
|
@defer.later do
|
|
x = 2
|
|
end
|
|
|
|
expect(@defer.length).to eq(1)
|
|
|
|
@defer.do_all_work
|
|
|
|
expect(x).to eq(2)
|
|
|
|
@defer.resume
|
|
|
|
@defer.later do
|
|
x = 3
|
|
end
|
|
|
|
wait_for(10) do
|
|
x == 3
|
|
end
|
|
|
|
expect(x).to eq(3)
|
|
end
|
|
|
|
it "recovers from a crash / fork" do
|
|
s = nil
|
|
@defer.stop!
|
|
wait_for(10) do
|
|
@defer.stopped?
|
|
end
|
|
# hack allow thread to die
|
|
sleep 0.005
|
|
|
|
@defer.later do
|
|
s = "good"
|
|
end
|
|
|
|
wait_for(10) do
|
|
s == "good"
|
|
end
|
|
|
|
expect(s).to eq("good")
|
|
end
|
|
|
|
it "can queue jobs properly" do
|
|
s = nil
|
|
|
|
@defer.later do
|
|
s = "good"
|
|
end
|
|
|
|
wait_for(10) do
|
|
s == "good"
|
|
end
|
|
|
|
expect(s).to eq("good")
|
|
end
|
|
|
|
end
|