discourse/spec/lib/scheduler/defer_spec.rb
David Taylor 29f7ec7090
DEV: Prevent defer stats exception when thread aborted (#19863)
When the thread is aborted, an exception is raised before the `start` of a job is set, and therefore raises an exception in the `ensure` block. This commit checks that `start` exists, and also adds `abort_on_exception=true` so that this issue would have caused test failures.
2023-01-16 09:08:44 +11:00

116 lines
2.4 KiB
Ruby

# encoding: utf-8
# frozen_string_literal: true
RSpec.describe Scheduler::Defer do
class DeferInstance
include Scheduler::Deferrable
end
def wait_for(timeout, &blk)
till = Time.now + (timeout.to_f / 1000)
sleep 0.001 while Time.now < till && !blk.call
end
before do
Discourse.catch_job_exceptions!
@defer = DeferInstance.new
@defer.async = true
end
after do
@defer.stop!
Discourse.reset_catch_job_exceptions!
end
it "supports basic instrumentation" do
@defer.later("first") {}
@defer.later("first") {}
@defer.later("second") {}
@defer.later("bad") { raise "boom" }
wait_for(200) { @defer.length == 0 }
stats = Hash[@defer.stats]
expect(stats["first"][:queued]).to eq(2)
expect(stats["first"][:finished]).to eq(2)
expect(stats["first"][:errors]).to eq(0)
expect(stats["first"][:duration]).to be > 0
expect(stats["second"][:queued]).to eq(1)
expect(stats["second"][:finished]).to eq(1)
expect(stats["second"][:errors]).to eq(0)
expect(stats["second"][:duration]).to be > 0
expect(stats["bad"][:queued]).to eq(1)
expect(stats["bad"][:finished]).to eq(1)
expect(stats["bad"][:duration]).to be > 0
expect(stats["bad"][:errors]).to eq(1)
end
it "supports timeout reporting" do
@defer.timeout = 0.05
logger =
track_log_messages do |l|
10.times { @defer.later("fast job") {} }
@defer.later "weird slow job" do
sleep
end
wait_for(200) { l.errors.length == 1 }
end
expect(logger.warnings.length).to eq(0)
expect(logger.fatals.length).to eq(0)
expect(logger.errors.length).to eq(1)
expect(logger.errors).to include(/'weird slow job' is still running/)
end
it "can pause and resume" do
x = 1
@defer.pause
@defer.later { x = 2 }
expect(@defer.length).to eq(1)
@defer.do_all_work
expect(x).to eq(2)
@defer.resume
@defer.later { x = 3 }
wait_for(1000) { x == 3 }
expect(x).to eq(3)
end
it "recovers from a crash / fork" do
s = nil
@defer.stop!
wait_for(1000) { @defer.stopped? }
# hack allow thread to die
sleep 0.005
@defer.later { s = "good" }
wait_for(1000) { s == "good" }
expect(s).to eq("good")
end
it "can queue jobs properly" do
s = nil
@defer.later { s = "good" }
wait_for(1000) { s == "good" }
expect(s).to eq("good")
end
end