Class: TestQueue::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/test_queue/runner.rb,
lib/test_queue/runner/sample.rb,
lib/test_queue/runner/puppet_lint.rb,
lib/test_queue/runner/minitest.rb,
lib/test_queue/runner/rspec.rb

Direct Known Subclasses

MiniTest, PuppetLint, RSpec, Sample

Defined Under Namespace

Classes: MiniTest, PuppetLint, RSpec, Sample

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(queue, concurrency = nil) ⇒ Runner

Returns a new instance of Runner.

Raises:

  • (ArgumentError) 


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# File 'lib/test_queue/runner.rb', line 24

def initialize(queue, concurrency=nil)
  raise ArgumentError, 'array required' unless Array === queue

  @queue = queue

  @workers = {}
  @completed = []

  @concurrency =
    concurrency ||
    (ENV['TEST_QUEUE_WORKERS'] && ENV['TEST_QUEUE_WORKERS'].to_i) ||
    if File.exists?('/proc/cpuinfo')
      File.read('/proc/cpuinfo').split("\n").grep(/processor/).size
    elsif RUBY_PLATFORM =~ /darwin/
      `/usr/sbin/sysctl -n hw.activecpu`.to_i
    else
      2
    end
end

Instance Attribute Details

#concurrency ⇒ Object

Returns the value of attribute concurrency.



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# File 'lib/test_queue/runner.rb', line 22

def concurrency
  @concurrency
end

Instance Method Details

#after_fork(num) ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 142

def after_fork(num)
  srand

  output = File.open("/tmp/test_queue_worker_#{$$}_output", 'w')

  $stdout.reopen(output)
  $stderr.reopen($stdout)
  $stdout.sync = $stderr.sync = true

  $0 = "test-queue worker [#{num}]"
  puts
  puts "==> Starting #$0 (#{Process.pid})"
  puts
end

#cleanup_worker ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 172

def cleanup_worker
  if pid = Process.waitpid and worker = @workers.delete(pid)
    @completed << worker
    worker.status = $?
    worker.end_time = Time.now

    if File.exists?(file = "/tmp/test_queue_worker_#{pid}_output")
      worker.output = IO.binread(file)
      puts worker.output
      FileUtils.rm(file)
    end

    if File.exists?(file = "/tmp/test_queue_worker_#{pid}_stats")
      worker.stats = Marshal.load(IO.binread(file))
      FileUtils.rm(file)
    end
  end
end

#distribute_queue ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 191

def distribute_queue
  until @queue.empty?
    IO.select([@server], nil, nil, nil)

    sock = @server.accept
    sock.write(Marshal.dump(@queue.shift))
    sock.close
  end
ensure
  stop_master

  until @workers.empty?
    cleanup_worker
  end
end

#execute ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 53

def execute
  $stdout.sync = $stderr.sync = true

  @concurrency > 0 ?
    execute_parallel :
    execute_sequential
ensure
  puts
  puts "==> Summary"
  puts

  @failures = ''
  @completed.each do |worker|
    summary, failures = summarize_worker(worker)
    @failures << failures if failures

    puts "    [%2d] %55s      in %.4fs      (pid %d exit %d)" % [
      worker.num,
      summary,
      worker.end_time - worker.start_time,
      worker.pid,
      worker.status.exitstatus
    ]
  end

  unless @failures.empty?
    puts
    puts "==> Failures"
    puts
    puts @failures
  end

  puts

  if @stats
    File.open('.test_queue_stats', 'wb') do |f|
      f.write Marshal.dump(stats)
    end
  end

  exit! @completed.inject(0){ |s, worker| s + worker.status.exitstatus }
end

#execute_parallel ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 100

def execute_parallel
  start_master
  spawn_workers
  distribute_queue
ensure
  stop_master

  @workers.each do |pid, worker|
    Process.kill 'KILL', pid
  end

  until @workers.empty?
    cleanup_worker
  end
end

#execute_sequential ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 96

def execute_sequential
  exit! run_worker(@queue)
end

#run_worker(iterator) ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 157

def run_worker(iterator)
  iterator.each do |item|
    puts "  #{item.inspect}"
  end

  return 0 # exit status
end

#spawn_workers ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 128

def spawn_workers
  @concurrency.times do |i|
    num = i+1

    pid = fork do
      @server.close
      after_fork(num)
      exit! run_worker(iterator = Iterator.new(@socket)) || 0
    end

    @workers[pid] = Worker.new(pid, num)
  end
end

#start_master ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 116

def start_master
  @socket = "/tmp/test_queue_#{$$}_#{object_id}.sock"
  FileUtils.rm(@socket) if File.exists?(@socket)
  @server = UNIXServer.new(@socket)
end

#stats ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 44

def stats
  @stats ||=
    if File.exists?(file = '.test_queue_stats')
      Marshal.load(IO.binread(file)) || {}
    else
      {}
    end
end

#stop_master ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 122

def stop_master
  FileUtils.rm_f(@socket) if @socket
  @server.close rescue nil if @server
  @socket = @server = nil
end

#summarize_worker(worker) ⇒ Object 



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# File 'lib/test_queue/runner.rb', line 165

def summarize_worker(worker)
  num_tests = ''
  failures = ''

  [ num_tests, failures ]
end