115 lines
2.6 KiB
Ruby
115 lines
2.6 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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# For easier debugging set `PUMA_DEBUG=1`
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describe Gitlab::Cluster::Mixins::PumaCluster do
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before do
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stub_const('PUMA_STARTUP_TIMEOUT', 30)
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end
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context 'when running Puma in Cluster-mode' do
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using RSpec::Parameterized::TableSyntax
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where(:signal, :exitstatus, :termsig) do
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# executes phased restart block
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:USR1 | 140 | nil
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:USR2 | 140 | nil
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:INT | 140 | nil
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:HUP | 140 | nil
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# does not execute phased restart block
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:TERM | nil | 15
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end
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with_them do
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it 'properly handles process lifecycle' do
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with_puma(workers: 1) do |pid|
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Process.kill(signal, pid)
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child_pid, child_status = Process.wait2(pid)
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expect(child_pid).to eq(pid)
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expect(child_status.exitstatus).to eq(exitstatus)
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expect(child_status.termsig).to eq(termsig)
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end
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end
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end
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end
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private
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def with_puma(workers:, timeout: PUMA_STARTUP_TIMEOUT)
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with_puma_config(workers: workers) do |puma_rb|
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cmdline = [
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"bundle", "exec", "puma",
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"-C", puma_rb,
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"-I", Rails.root.to_s
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]
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IO.popen(cmdline) do |process|
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# wait for process to start:
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# [2123] * Listening on tcp://127.0.0.1:0
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wait_for_output(process, /Listening on/, timeout: timeout)
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consume_output(process)
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yield(process.pid)
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ensure
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begin
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Process.kill(:KILL, process.pid)
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rescue Errno::ESRCH
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end
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end
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end
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end
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def with_puma_config(workers:)
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Dir.mktmpdir do |dir|
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File.write "#{dir}/puma.rb", <<-EOF
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require './lib/gitlab/cluster/lifecycle_events'
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require './lib/gitlab/cluster/mixins/puma_cluster'
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workers #{workers}
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bind "tcp://127.0.0.1:0"
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preload_app!
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app -> (env) { [404, {}, ['']] }
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Puma::Cluster.prepend(#{described_class})
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mutex = Mutex.new
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Gitlab::Cluster::LifecycleEvents.on_before_blackout_period do
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mutex.synchronize do
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exit(140)
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end
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end
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# redirect stderr to stdout
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$stderr.reopen($stdout)
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EOF
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yield("#{dir}/puma.rb")
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end
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end
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def wait_for_output(process, output, timeout:)
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Timeout.timeout(timeout) do
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loop do
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line = process.readline
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puts "PUMA_DEBUG: #{line}" if ENV['PUMA_DEBUG']
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break if line =~ output
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end
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end
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end
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def consume_output(process)
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Thread.new do
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loop do
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line = process.readline
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puts "PUMA_DEBUG: #{line}" if ENV['PUMA_DEBUG']
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end
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rescue
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end
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end
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end
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