test/exec/test_exec.rb

   1 # -*- encoding: binary -*-
   2
   3 # Copyright (c) 2009 Eric Wong
   4 FLOCK_PATH = File.expand_path(__FILE__)
   5 require 'test/test_helper'
   6
   7 do_test = true
   8 $unicorn_bin = ENV['UNICORN_TEST_BIN'] || "unicorn"
   9 redirect_test_io do
  10   do_test = system($unicorn_bin, '-v')
  11 end
  12
  13 unless do_test
  14   warn "#{$unicorn_bin} not found in PATH=#{ENV['PATH']}, " \
  15        "skipping this test"
  16 end
  17
  18 unless try_require('rack')
  19   warn "Unable to load Rack, skipping this test"
  20   do_test = false
  21 end
  22
  23 class ExecTest < Test::Unit::TestCase
  24   trap(:QUIT, 'IGNORE')
  25
  26   HI = <<-EOS
  27 use Rack::ContentLength
  28 run proc { |env| [ 200, { 'Content-Type' => 'text/plain' }, [ "HI\\n" ] ] }
  29   EOS
  30
  31   SHOW_RACK_ENV = <<-EOS
  32 use Rack::ContentLength
  33 run proc { |env|
  34   [ 200, { 'Content-Type' => 'text/plain' }, [ ENV['RACK_ENV'] ] ]
  35 }
  36   EOS
  37
  38   HELLO = <<-EOS
  39 class Hello
  40   def call(env)
  41     [ 200, { 'Content-Type' => 'text/plain' }, [ "HI\\n" ] ]
  42   end
  43 end
  44   EOS
  45
  46   COMMON_TMP = Tempfile.new('unicorn_tmp') unless defined?(COMMON_TMP)
  47
  48   HEAVY_CFG = <<-EOS
  49 worker_processes 4
  50 timeout 30
  51 logger Logger.new('#{COMMON_TMP.path}')
  52 before_fork do |server, worker|
  53   server.logger.info "before_fork: worker=\#{worker.nr}"
  54 end
  55   EOS
  56
  57   WORKING_DIRECTORY_CHECK_RU = <<-EOS
  58 use Rack::ContentLength
  59 run lambda { |env|
  60   pwd = ENV['PWD']
  61   a = ::File.stat(pwd)
  62   b = ::File.stat(Dir.pwd)
  63   if (a.ino == b.ino && a.dev == b.dev)
  64     [ 200, { 'Content-Type' => 'text/plain' }, [ pwd ] ]
  65   else
  66     [ 404, { 'Content-Type' => 'text/plain' }, [] ]
  67   end
  68 }
  69   EOS
  70
  71   def setup
  72     @pwd = Dir.pwd
  73     @tmpfile = Tempfile.new('unicorn_exec_test')
  74     @tmpdir = @tmpfile.path
  75     @tmpfile.close!
  76     Dir.mkdir(@tmpdir)
  77     Dir.chdir(@tmpdir)
  78     @addr = ENV['UNICORN_TEST_ADDR'] || '127.0.0.1'
  79     @port = unused_port(@addr)
  80     @sockets = []
  81     @start_pid = $$
  82   end
  83
  84   def teardown
  85     return if @start_pid != $$
  86     Dir.chdir(@pwd)
  87     FileUtils.rmtree(@tmpdir)
  88     @sockets.each { |path| File.unlink(path) rescue nil }
  89     loop do
  90       Process.kill('-QUIT', 0)
  91       begin
  92         Process.waitpid(-1, Process::WNOHANG) or break
  93       rescue Errno::ECHILD
  94         break
  95       end
  96     end
  97   end
  98
  99   def test_working_directory_rel_path_config_file
 100     other = Tempfile.new('unicorn.wd')
 101     File.unlink(other.path)
 102     Dir.mkdir(other.path)
 103     File.open("config.ru", "wb") do |fp|
 104       fp.syswrite WORKING_DIRECTORY_CHECK_RU
 105     end
 106     FileUtils.cp("config.ru", other.path + "/config.ru")
 107     Dir.chdir(@tmpdir)
 108
 109     tmp = File.open('unicorn.config', 'wb')
 110     tmp.syswrite <<EOF
 111 working_directory '#@tmpdir'
 112 listen '#@addr:#@port'
 113 EOF
 114     pid = xfork { redirect_test_io { exec($unicorn_bin, "-c#{tmp.path}") } }
 115     wait_workers_ready("test_stderr.#{pid}.log", 1)
 116     results = hit(["http://#@addr:#@port/"])
 117     assert_equal @tmpdir, results.first
 118     File.truncate("test_stderr.#{pid}.log", 0)
 119
 120     tmp.sysseek(0)
 121     tmp.truncate(0)
 122     tmp.syswrite <<EOF
 123 working_directory '#{other.path}'
 124 listen '#@addr:#@port'
 125 EOF
 126
 127     Process.kill(:HUP, pid)
 128     lines = []
 129     re = /config_file=(.+) would not be accessible in working_directory=(.+)/
 130     until lines.grep(re)
 131       sleep 0.1
 132       lines = File.readlines("test_stderr.#{pid}.log")
 133     end
 134
 135     File.truncate("test_stderr.#{pid}.log", 0)
 136     FileUtils.cp('unicorn.config', other.path + "/unicorn.config")
 137     Process.kill(:HUP, pid)
 138     wait_workers_ready("test_stderr.#{pid}.log", 1)
 139     results = hit(["http://#@addr:#@port/"])
 140     assert_equal other.path, results.first
 141
 142     Process.kill(:QUIT, pid)
 143     ensure
 144       FileUtils.rmtree(other.path)
 145   end
 146
 147   def test_working_directory
 148     other = Tempfile.new('unicorn.wd')
 149     File.unlink(other.path)
 150     Dir.mkdir(other.path)
 151     File.open("config.ru", "wb") do |fp|
 152       fp.syswrite WORKING_DIRECTORY_CHECK_RU
 153     end
 154     FileUtils.cp("config.ru", other.path + "/config.ru")
 155     tmp = Tempfile.new('unicorn.config')
 156     tmp.syswrite <<EOF
 157 working_directory '#@tmpdir'
 158 listen '#@addr:#@port'
 159 EOF
 160     pid = xfork { redirect_test_io { exec($unicorn_bin, "-c#{tmp.path}") } }
 161     wait_workers_ready("test_stderr.#{pid}.log", 1)
 162     results = hit(["http://#@addr:#@port/"])
 163     assert_equal @tmpdir, results.first
 164     File.truncate("test_stderr.#{pid}.log", 0)
 165
 166     tmp.sysseek(0)
 167     tmp.truncate(0)
 168     tmp.syswrite <<EOF
 169 working_directory '#{other.path}'
 170 listen '#@addr:#@port'
 171 EOF
 172
 173     Process.kill(:HUP, pid)
 174     wait_workers_ready("test_stderr.#{pid}.log", 1)
 175     results = hit(["http://#@addr:#@port/"])
 176     assert_equal other.path, results.first
 177
 178     Process.kill(:QUIT, pid)
 179     ensure
 180       FileUtils.rmtree(other.path)
 181   end
 182
 183   def test_working_directory_controls_relative_paths
 184     other = Tempfile.new('unicorn.wd')
 185     File.unlink(other.path)
 186     Dir.mkdir(other.path)
 187     File.open("config.ru", "wb") do |fp|
 188       fp.syswrite WORKING_DIRECTORY_CHECK_RU
 189     end
 190     FileUtils.cp("config.ru", other.path + "/config.ru")
 191     system('mkfifo', "#{other.path}/fifo")
 192     tmp = Tempfile.new('unicorn.config')
 193     tmp.syswrite <<EOF
 194 pid "pid_file_here"
 195 stderr_path "stderr_log_here"
 196 stdout_path "stdout_log_here"
 197 working_directory '#{other.path}'
 198 listen '#@addr:#@port'
 199 after_fork do |server, worker|
 200   File.open("fifo", "wb").close
 201 end
 202 EOF
 203     pid = xfork { redirect_test_io { exec($unicorn_bin, "-c#{tmp.path}") } }
 204     File.open("#{other.path}/fifo", "rb").close
 205
 206     assert ! File.exist?("stderr_log_here")
 207     assert ! File.exist?("stdout_log_here")
 208     assert ! File.exist?("pid_file_here")
 209
 210     assert ! File.exist?("#@tmpdir/stderr_log_here")
 211     assert ! File.exist?("#@tmpdir/stdout_log_here")
 212     assert ! File.exist?("#@tmpdir/pid_file_here")
 213
 214     assert File.exist?("#{other.path}/pid_file_here")
 215     assert_equal "#{pid}\n", File.read("#{other.path}/pid_file_here")
 216     assert File.exist?("#{other.path}/stderr_log_here")
 217     assert File.exist?("#{other.path}/stdout_log_here")
 218     wait_master_ready("#{other.path}/stderr_log_here")
 219
 220     Process.kill(:QUIT, pid)
 221     ensure
 222       FileUtils.rmtree(other.path)
 223   end
 224
 225
 226   def test_exit_signals
 227     %w(INT TERM QUIT).each do |sig|
 228       File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 229       pid = xfork { redirect_test_io { exec($unicorn_bin, "-l#@addr:#@port") } }
 230       wait_master_ready("test_stderr.#{pid}.log")
 231       wait_workers_ready("test_stderr.#{pid}.log", 1)
 232
 233       Process.kill(sig, pid)
 234       pid, status = Process.waitpid2(pid)
 235
 236       reaped = File.readlines("test_stderr.#{pid}.log").grep(/reaped/)
 237       assert_equal 1, reaped.size
 238       assert status.exited?
 239     end
 240   end
 241
 242   def test_basic
 243     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 244     pid = fork do
 245       redirect_test_io { exec($unicorn_bin, "-l", "#{@addr}:#{@port}") }
 246     end
 247     results = retry_hit(["http://#{@addr}:#{@port}/"])
 248     assert_equal String, results[0].class
 249     assert_shutdown(pid)
 250   end
 251
 252   def test_rack_env_unset
 253     File.open("config.ru", "wb") { |fp| fp.syswrite(SHOW_RACK_ENV) }
 254     pid = fork { redirect_test_io { exec($unicorn_bin, "-l#@addr:#@port") } }
 255     results = retry_hit(["http://#{@addr}:#{@port}/"])
 256     assert_equal "development", results.first
 257     assert_shutdown(pid)
 258   end
 259
 260   def test_rack_env_cli_set
 261     File.open("config.ru", "wb") { |fp| fp.syswrite(SHOW_RACK_ENV) }
 262     pid = fork {
 263       redirect_test_io { exec($unicorn_bin, "-l#@addr:#@port", "-Easdf") }
 264     }
 265     results = retry_hit(["http://#{@addr}:#{@port}/"])
 266     assert_equal "asdf", results.first
 267     assert_shutdown(pid)
 268   end
 269
 270   def test_rack_env_ENV_set
 271     File.open("config.ru", "wb") { |fp| fp.syswrite(SHOW_RACK_ENV) }
 272     pid = fork {
 273       ENV["RACK_ENV"] = "foobar"
 274       redirect_test_io { exec($unicorn_bin, "-l#@addr:#@port") }
 275     }
 276     results = retry_hit(["http://#{@addr}:#{@port}/"])
 277     assert_equal "foobar", results.first
 278     assert_shutdown(pid)
 279   end
 280
 281   def test_rack_env_cli_override_ENV
 282     File.open("config.ru", "wb") { |fp| fp.syswrite(SHOW_RACK_ENV) }
 283     pid = fork {
 284       ENV["RACK_ENV"] = "foobar"
 285       redirect_test_io { exec($unicorn_bin, "-l#@addr:#@port", "-Easdf") }
 286     }
 287     results = retry_hit(["http://#{@addr}:#{@port}/"])
 288     assert_equal "asdf", results.first
 289     assert_shutdown(pid)
 290   end
 291
 292   def test_ttin_ttou
 293     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 294     pid = fork { redirect_test_io { exec($unicorn_bin, "-l#@addr:#@port") } }
 295     log = "test_stderr.#{pid}.log"
 296     wait_master_ready(log)
 297     [ 2, 3].each { |i|
 298       Process.kill(:TTIN, pid)
 299       wait_workers_ready(log, i)
 300     }
 301     File.truncate(log, 0)
 302     reaped = nil
 303     [ 2, 1, 0].each { |i|
 304       Process.kill(:TTOU, pid)
 305       DEFAULT_TRIES.times {
 306         sleep DEFAULT_RES
 307         reaped = File.readlines(log).grep(/reaped.*\s*worker=#{i}$/)
 308         break if reaped.size == 1
 309       }
 310       assert_equal 1, reaped.size
 311     }
 312   end
 313
 314   def test_help
 315     redirect_test_io do
 316       assert(system($unicorn_bin, "-h"), "help text returns true")
 317     end
 318     assert_equal 0, File.stat("test_stderr.#$$.log").size
 319     assert_not_equal 0, File.stat("test_stdout.#$$.log").size
 320     lines = File.readlines("test_stdout.#$$.log")
 321
 322     # Be considerate of the on-call technician working from their
 323     # mobile phone or netbook on a slow connection :)
 324     assert lines.size <= 24, "help height fits in an ANSI terminal window"
 325     lines.each do |line|
 326       line.chomp!
 327       assert line.size <= 80, "help width fits in an ANSI terminal window"
 328     end
 329   end
 330
 331   def test_broken_reexec_config
 332     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 333     pid_file = "#{@tmpdir}/test.pid"
 334     old_file = "#{pid_file}.oldbin"
 335     ucfg = Tempfile.new('unicorn_test_config')
 336     ucfg.syswrite("listen %(#@addr:#@port)\n")
 337     ucfg.syswrite("pid %(#{pid_file})\n")
 338     ucfg.syswrite("logger Logger.new(%(#{@tmpdir}/log))\n")
 339     pid = xfork do
 340       redirect_test_io do
 341         exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
 342       end
 343     end
 344     results = retry_hit(["http://#{@addr}:#{@port}/"])
 345     assert_equal String, results[0].class
 346
 347     wait_for_file(pid_file)
 348     Process.waitpid(pid)
 349     Process.kill(:USR2, File.read(pid_file).to_i)
 350     wait_for_file(old_file)
 351     wait_for_file(pid_file)
 352     old_pid = File.read(old_file).to_i
 353     Process.kill(:QUIT, old_pid)
 354     wait_for_death(old_pid)
 355
 356     ucfg.syswrite("timeout %(#{pid_file})\n") # introduce a bug
 357     current_pid = File.read(pid_file).to_i
 358     Process.kill(:USR2, current_pid)
 359
 360     # wait for pid_file to restore itself
 361     tries = DEFAULT_TRIES
 362     begin
 363       while current_pid != File.read(pid_file).to_i
 364         sleep(DEFAULT_RES) and (tries -= 1) > 0
 365       end
 366     rescue Errno::ENOENT
 367       (sleep(DEFAULT_RES) and (tries -= 1) > 0) and retry
 368     end
 369     assert_equal current_pid, File.read(pid_file).to_i
 370
 371     tries = DEFAULT_TRIES
 372     while File.exist?(old_file)
 373       (sleep(DEFAULT_RES) and (tries -= 1) > 0) or break
 374     end
 375     assert ! File.exist?(old_file), "oldbin=#{old_file} gone"
 376     port2 = unused_port(@addr)
 377
 378     # fix the bug
 379     ucfg.sysseek(0)
 380     ucfg.truncate(0)
 381     ucfg.syswrite("listen %(#@addr:#@port)\n")
 382     ucfg.syswrite("listen %(#@addr:#{port2})\n")
 383     ucfg.syswrite("pid %(#{pid_file})\n")
 384     Process.kill(:USR2, current_pid)
 385
 386     wait_for_file(old_file)
 387     wait_for_file(pid_file)
 388     new_pid = File.read(pid_file).to_i
 389     assert_not_equal current_pid, new_pid
 390     assert_equal current_pid, File.read(old_file).to_i
 391     results = retry_hit(["http://#{@addr}:#{@port}/",
 392                          "http://#{@addr}:#{port2}/"])
 393     assert_equal String, results[0].class
 394     assert_equal String, results[1].class
 395
 396     Process.kill(:QUIT, current_pid)
 397     Process.kill(:QUIT, new_pid)
 398   end
 399
 400   def test_broken_reexec_ru
 401     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 402     pid_file = "#{@tmpdir}/test.pid"
 403     old_file = "#{pid_file}.oldbin"
 404     ucfg = Tempfile.new('unicorn_test_config')
 405     ucfg.syswrite("pid %(#{pid_file})\n")
 406     ucfg.syswrite("logger Logger.new(%(#{@tmpdir}/log))\n")
 407     pid = xfork do
 408       redirect_test_io do
 409         exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
 410       end
 411     end
 412     results = retry_hit(["http://#{@addr}:#{@port}/"])
 413     assert_equal String, results[0].class
 414
 415     wait_for_file(pid_file)
 416     Process.waitpid(pid)
 417     Process.kill(:USR2, File.read(pid_file).to_i)
 418     wait_for_file(old_file)
 419     wait_for_file(pid_file)
 420     old_pid = File.read(old_file).to_i
 421     Process.kill(:QUIT, old_pid)
 422     wait_for_death(old_pid)
 423
 424     File.unlink("config.ru") # break reloading
 425     current_pid = File.read(pid_file).to_i
 426     Process.kill(:USR2, current_pid)
 427
 428     # wait for pid_file to restore itself
 429     tries = DEFAULT_TRIES
 430     begin
 431       while current_pid != File.read(pid_file).to_i
 432         sleep(DEFAULT_RES) and (tries -= 1) > 0
 433       end
 434     rescue Errno::ENOENT
 435       (sleep(DEFAULT_RES) and (tries -= 1) > 0) and retry
 436     end
 437
 438     tries = DEFAULT_TRIES
 439     while File.exist?(old_file)
 440       (sleep(DEFAULT_RES) and (tries -= 1) > 0) or break
 441     end
 442     assert ! File.exist?(old_file), "oldbin=#{old_file} gone"
 443     assert_equal current_pid, File.read(pid_file).to_i
 444
 445     # fix the bug
 446     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 447     Process.kill(:USR2, current_pid)
 448     wait_for_file(old_file)
 449     wait_for_file(pid_file)
 450     new_pid = File.read(pid_file).to_i
 451     assert_not_equal current_pid, new_pid
 452     assert_equal current_pid, File.read(old_file).to_i
 453     results = retry_hit(["http://#{@addr}:#{@port}/"])
 454     assert_equal String, results[0].class
 455
 456     Process.kill(:QUIT, current_pid)
 457     Process.kill(:QUIT, new_pid)
 458   end
 459
 460   def test_unicorn_config_listener_swap
 461     port_cli = unused_port
 462     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 463     ucfg = Tempfile.new('unicorn_test_config')
 464     ucfg.syswrite("listen '#@addr:#@port'\n")
 465     pid = xfork do
 466       redirect_test_io do
 467         exec($unicorn_bin, "-c#{ucfg.path}", "-l#@addr:#{port_cli}")
 468       end
 469     end
 470     results = retry_hit(["http://#@addr:#{port_cli}/"])
 471     assert_equal String, results[0].class
 472     results = retry_hit(["http://#@addr:#@port/"])
 473     assert_equal String, results[0].class
 474
 475     port2 = unused_port(@addr)
 476     ucfg.sysseek(0)
 477     ucfg.truncate(0)
 478     ucfg.syswrite("listen '#@addr:#{port2}'\n")
 479     Process.kill(:HUP, pid)
 480
 481     results = retry_hit(["http://#@addr:#{port2}/"])
 482     assert_equal String, results[0].class
 483     results = retry_hit(["http://#@addr:#{port_cli}/"])
 484     assert_equal String, results[0].class
 485     reuse = TCPServer.new(@addr, @port)
 486     reuse.close
 487     assert_shutdown(pid)
 488   end
 489
 490   def test_unicorn_config_listen_with_options
 491     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 492     ucfg = Tempfile.new('unicorn_test_config')
 493     ucfg.syswrite("listen '#{@addr}:#{@port}', :backlog => 512,\n")
 494     ucfg.syswrite("                            :rcvbuf => 4096,\n")
 495     ucfg.syswrite("                            :sndbuf => 4096\n")
 496     pid = xfork do
 497       redirect_test_io { exec($unicorn_bin, "-c#{ucfg.path}") }
 498     end
 499     results = retry_hit(["http://#{@addr}:#{@port}/"])
 500     assert_equal String, results[0].class
 501     assert_shutdown(pid)
 502   end
 503
 504   def test_unicorn_config_per_worker_listen
 505     port2 = unused_port
 506     pid_spit = 'use Rack::ContentLength;' \
 507       'run proc { |e| [ 200, {"Content-Type"=>"text/plain"}, ["#$$\\n"] ] }'
 508     File.open("config.ru", "wb") { |fp| fp.syswrite(pid_spit) }
 509     tmp = Tempfile.new('test.socket')
 510     File.unlink(tmp.path)
 511     ucfg = Tempfile.new('unicorn_test_config')
 512     ucfg.syswrite("listen '#@addr:#@port'\n")
 513     ucfg.syswrite("after_fork { |s,w|\n")
 514     ucfg.syswrite("  s.listen('#{tmp.path}', :backlog => 5, :sndbuf => 8192)\n")
 515     ucfg.syswrite("  s.listen('#@addr:#{port2}', :rcvbuf => 8192)\n")
 516     ucfg.syswrite("\n}\n")
 517     pid = xfork do
 518       redirect_test_io { exec($unicorn_bin, "-c#{ucfg.path}") }
 519     end
 520     results = retry_hit(["http://#{@addr}:#{@port}/"])
 521     assert_equal String, results[0].class
 522     worker_pid = results[0].to_i
 523     assert_not_equal pid, worker_pid
 524     s = UNIXSocket.new(tmp.path)
 525     s.syswrite("GET / HTTP/1.0\r\n\r\n")
 526     results = ''
 527     loop { results << s.sysread(4096) } rescue nil
 528     s.close
 529     assert_equal worker_pid, results.split(/\r\n/).last.to_i
 530     results = hit(["http://#@addr:#{port2}/"])
 531     assert_equal String, results[0].class
 532     assert_equal worker_pid, results[0].to_i
 533     assert_shutdown(pid)
 534   end
 535
 536   def test_unicorn_config_listen_augments_cli
 537     port2 = unused_port(@addr)
 538     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 539     ucfg = Tempfile.new('unicorn_test_config')
 540     ucfg.syswrite("listen '#{@addr}:#{@port}'\n")
 541     pid = xfork do
 542       redirect_test_io do
 543         exec($unicorn_bin, "-c#{ucfg.path}", "-l#{@addr}:#{port2}")
 544       end
 545     end
 546     uris = [@port, port2].map { |i| "http://#{@addr}:#{i}/" }
 547     results = retry_hit(uris)
 548     assert_equal results.size, uris.size
 549     assert_equal String, results[0].class
 550     assert_equal String, results[1].class
 551     assert_shutdown(pid)
 552   end
 553
 554   def test_weird_config_settings
 555     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 556     ucfg = Tempfile.new('unicorn_test_config')
 557     ucfg.syswrite(HEAVY_CFG)
 558     pid = xfork do
 559       redirect_test_io do
 560         exec($unicorn_bin, "-c#{ucfg.path}", "-l#{@addr}:#{@port}")
 561       end
 562     end
 563
 564     results = retry_hit(["http://#{@addr}:#{@port}/"])
 565     assert_equal String, results[0].class
 566     wait_master_ready(COMMON_TMP.path)
 567     wait_workers_ready(COMMON_TMP.path, 4)
 568     bf = File.readlines(COMMON_TMP.path).grep(/\bbefore_fork: worker=/)
 569     assert_equal 4, bf.size
 570     rotate = Tempfile.new('unicorn_rotate')
 571
 572     File.rename(COMMON_TMP.path, rotate.path)
 573     Process.kill(:USR1, pid)
 574
 575     wait_for_file(COMMON_TMP.path)
 576     assert File.exist?(COMMON_TMP.path), "#{COMMON_TMP.path} exists"
 577     # USR1 should've been passed to all workers
 578     tries = DEFAULT_TRIES
 579     log = File.readlines(rotate.path)
 580     while (tries -= 1) > 0 &&
 581           log.grep(/reopening logs\.\.\./).size < 5
 582       sleep DEFAULT_RES
 583       log = File.readlines(rotate.path)
 584     end
 585     assert_equal 5, log.grep(/reopening logs\.\.\./).size
 586     assert_equal 0, log.grep(/done reopening logs/).size
 587
 588     tries = DEFAULT_TRIES
 589     log = File.readlines(COMMON_TMP.path)
 590     while (tries -= 1) > 0 && log.grep(/done reopening logs/).size < 5
 591       sleep DEFAULT_RES
 592       log = File.readlines(COMMON_TMP.path)
 593     end
 594     assert_equal 5, log.grep(/done reopening logs/).size
 595     assert_equal 0, log.grep(/reopening logs\.\.\./).size
 596
 597     Process.kill(:QUIT, pid)
 598     pid, status = Process.waitpid2(pid)
 599
 600     assert status.success?, "exited successfully"
 601   end
 602
 603   def test_read_embedded_cli_switches
 604     File.open("config.ru", "wb") do |fp|
 605       fp.syswrite("#\\ -p #{@port} -o #{@addr}\n")
 606       fp.syswrite(HI)
 607     end
 608     pid = fork { redirect_test_io { exec($unicorn_bin) } }
 609     results = retry_hit(["http://#{@addr}:#{@port}/"])
 610     assert_equal String, results[0].class
 611     assert_shutdown(pid)
 612   end
 613
 614   def test_config_ru_alt_path
 615     config_path = "#{@tmpdir}/foo.ru"
 616     File.open(config_path, "wb") { |fp| fp.syswrite(HI) }
 617     pid = fork do
 618       redirect_test_io do
 619         Dir.chdir("/")
 620         exec($unicorn_bin, "-l#{@addr}:#{@port}", config_path)
 621       end
 622     end
 623     results = retry_hit(["http://#{@addr}:#{@port}/"])
 624     assert_equal String, results[0].class
 625     assert_shutdown(pid)
 626   end
 627
 628   def test_load_module
 629     libdir = "#{@tmpdir}/lib"
 630     FileUtils.mkpath([ libdir ])
 631     config_path = "#{libdir}/hello.rb"
 632     File.open(config_path, "wb") { |fp| fp.syswrite(HELLO) }
 633     pid = fork do
 634       redirect_test_io do
 635         Dir.chdir("/")
 636         exec($unicorn_bin, "-l#{@addr}:#{@port}", config_path)
 637       end
 638     end
 639     results = retry_hit(["http://#{@addr}:#{@port}/"])
 640     assert_equal String, results[0].class
 641     assert_shutdown(pid)
 642   end
 643
 644   def test_reexec
 645     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 646     pid_file = "#{@tmpdir}/test.pid"
 647     pid = fork do
 648       redirect_test_io do
 649         exec($unicorn_bin, "-l#{@addr}:#{@port}", "-P#{pid_file}")
 650       end
 651     end
 652     reexec_basic_test(pid, pid_file)
 653   end
 654
 655   def test_reexec_alt_config
 656     config_file = "#{@tmpdir}/foo.ru"
 657     File.open(config_file, "wb") { |fp| fp.syswrite(HI) }
 658     pid_file = "#{@tmpdir}/test.pid"
 659     pid = fork do
 660       redirect_test_io do
 661         exec($unicorn_bin, "-l#{@addr}:#{@port}", "-P#{pid_file}", config_file)
 662       end
 663     end
 664     reexec_basic_test(pid, pid_file)
 665   end
 666
 667   def test_socket_unlinked_restore
 668     results = nil
 669     sock = Tempfile.new('unicorn_test_sock')
 670     sock_path = sock.path
 671     @sockets << sock_path
 672     sock.close!
 673     ucfg = Tempfile.new('unicorn_test_config')
 674     ucfg.syswrite("listen \"#{sock_path}\"\n")
 675
 676     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 677     pid = xfork { redirect_test_io { exec($unicorn_bin, "-c#{ucfg.path}") } }
 678     wait_for_file(sock_path)
 679     assert File.socket?(sock_path)
 680
 681     sock = UNIXSocket.new(sock_path)
 682     sock.syswrite("GET / HTTP/1.0\r\n\r\n")
 683     results = sock.sysread(4096)
 684
 685     assert_equal String, results.class
 686     File.unlink(sock_path)
 687     Process.kill(:HUP, pid)
 688     wait_for_file(sock_path)
 689     assert File.socket?(sock_path)
 690
 691     sock = UNIXSocket.new(sock_path)
 692     sock.syswrite("GET / HTTP/1.0\r\n\r\n")
 693     results = sock.sysread(4096)
 694
 695     assert_equal String, results.class
 696   end
 697
 698   def test_unicorn_config_file
 699     pid_file = "#{@tmpdir}/test.pid"
 700     sock = Tempfile.new('unicorn_test_sock')
 701     sock_path = sock.path
 702     sock.close!
 703     @sockets << sock_path
 704
 705     log = Tempfile.new('unicorn_test_log')
 706     ucfg = Tempfile.new('unicorn_test_config')
 707     ucfg.syswrite("listen \"#{sock_path}\"\n")
 708     ucfg.syswrite("pid \"#{pid_file}\"\n")
 709     ucfg.syswrite("logger Logger.new('#{log.path}')\n")
 710     ucfg.close
 711
 712     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 713     pid = xfork do
 714       redirect_test_io do
 715         exec($unicorn_bin, "-l#{@addr}:#{@port}",
 716              "-P#{pid_file}", "-c#{ucfg.path}")
 717       end
 718     end
 719     results = retry_hit(["http://#{@addr}:#{@port}/"])
 720     assert_equal String, results[0].class
 721     wait_master_ready(log.path)
 722     assert File.exist?(pid_file), "pid_file created"
 723     assert_equal pid, File.read(pid_file).to_i
 724     assert File.socket?(sock_path), "socket created"
 725
 726     sock = UNIXSocket.new(sock_path)
 727     sock.syswrite("GET / HTTP/1.0\r\n\r\n")
 728     results = sock.sysread(4096)
 729
 730     assert_equal String, results.class
 731
 732     # try reloading the config
 733     sock = Tempfile.new('new_test_sock')
 734     new_sock_path = sock.path
 735     @sockets << new_sock_path
 736     sock.close!
 737     new_log = Tempfile.new('unicorn_test_log')
 738     new_log.sync = true
 739     assert_equal 0, new_log.size
 740
 741     ucfg = File.open(ucfg.path, "wb")
 742     ucfg.syswrite("listen \"#{sock_path}\"\n")
 743     ucfg.syswrite("listen \"#{new_sock_path}\"\n")
 744     ucfg.syswrite("pid \"#{pid_file}\"\n")
 745     ucfg.syswrite("logger Logger.new('#{new_log.path}')\n")
 746     ucfg.close
 747     Process.kill(:HUP, pid)
 748
 749     wait_for_file(new_sock_path)
 750     assert File.socket?(new_sock_path), "socket exists"
 751     @sockets.each do |path|
 752       sock = UNIXSocket.new(path)
 753       sock.syswrite("GET / HTTP/1.0\r\n\r\n")
 754       results = sock.sysread(4096)
 755       assert_equal String, results.class
 756     end
 757
 758     assert_not_equal 0, new_log.size
 759     reexec_usr2_quit_test(pid, pid_file)
 760   end
 761
 762   def test_daemonize_reexec
 763     pid_file = "#{@tmpdir}/test.pid"
 764     log = Tempfile.new('unicorn_test_log')
 765     ucfg = Tempfile.new('unicorn_test_config')
 766     ucfg.syswrite("pid \"#{pid_file}\"\n")
 767     ucfg.syswrite("logger Logger.new('#{log.path}')\n")
 768     ucfg.close
 769
 770     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 771     pid = xfork do
 772       redirect_test_io do
 773         exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
 774       end
 775     end
 776     results = retry_hit(["http://#{@addr}:#{@port}/"])
 777     assert_equal String, results[0].class
 778     wait_for_file(pid_file)
 779     new_pid = File.read(pid_file).to_i
 780     assert_not_equal pid, new_pid
 781     pid, status = Process.waitpid2(pid)
 782     assert status.success?, "original process exited successfully"
 783     Process.kill(0, new_pid)
 784     reexec_usr2_quit_test(new_pid, pid_file)
 785   end
 786
 787   def test_daemonize_redirect_fail
 788     pid_file = "#{@tmpdir}/test.pid"
 789     ucfg = Tempfile.new('unicorn_test_config')
 790     ucfg.syswrite("pid #{pid_file}\"\n")
 791     err = Tempfile.new('stderr')
 792     out = Tempfile.new('stdout ')
 793
 794     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 795     pid = xfork do
 796       $stderr.reopen(err.path, "a")
 797       $stdout.reopen(out.path, "a")
 798       exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
 799     end
 800     pid, status = Process.waitpid2(pid)
 801     assert ! status.success?, "original process exited successfully"
 802     sleep 1 # can't waitpid on a daemonized process :<
 803     assert err.stat.size > 0
 804   end
 805
 806   def test_reexec_fd_leak
 807     unless RUBY_PLATFORM =~ /linux/ # Solaris may work, too, but I forget...
 808       warn "FD leak test only works on Linux at the moment"
 809       return
 810     end
 811     pid_file = "#{@tmpdir}/test.pid"
 812     log = Tempfile.new('unicorn_test_log')
 813     log.sync = true
 814     ucfg = Tempfile.new('unicorn_test_config')
 815     ucfg.syswrite("pid \"#{pid_file}\"\n")
 816     ucfg.syswrite("logger Logger.new('#{log.path}')\n")
 817     ucfg.syswrite("stderr_path '#{log.path}'\n")
 818     ucfg.syswrite("stdout_path '#{log.path}'\n")
 819     ucfg.close
 820
 821     File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
 822     pid = xfork do
 823       redirect_test_io do
 824         exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
 825       end
 826     end
 827
 828     wait_master_ready(log.path)
 829     wait_workers_ready(log.path, 1)
 830     File.truncate(log.path, 0)
 831     wait_for_file(pid_file)
 832     orig_pid = pid = File.read(pid_file).to_i
 833     orig_fds = `ls -l /proc/#{pid}/fd`.split(/\n/)
 834     assert $?.success?
 835     expect_size = orig_fds.size
 836
 837     Process.kill(:USR2, pid)
 838     wait_for_file("#{pid_file}.oldbin")
 839     Process.kill(:QUIT, pid)
 840
 841     wait_for_death(pid)
 842
 843     wait_master_ready(log.path)
 844     wait_workers_ready(log.path, 1)
 845     File.truncate(log.path, 0)
 846     wait_for_file(pid_file)
 847     pid = File.read(pid_file).to_i
 848     assert_not_equal orig_pid, pid
 849     curr_fds = `ls -l /proc/#{pid}/fd`.split(/\n/)
 850     assert $?.success?
 851
 852     # we could've inherited descriptors the first time around
 853     assert expect_size >= curr_fds.size, curr_fds.inspect
 854     expect_size = curr_fds.size
 855
 856     Process.kill(:USR2, pid)
 857     wait_for_file("#{pid_file}.oldbin")
 858     Process.kill(:QUIT, pid)
 859
 860     wait_for_death(pid)
 861
 862     wait_master_ready(log.path)
 863     wait_workers_ready(log.path, 1)
 864     File.truncate(log.path, 0)
 865     wait_for_file(pid_file)
 866     pid = File.read(pid_file).to_i
 867     curr_fds = `ls -l /proc/#{pid}/fd`.split(/\n/)
 868     assert $?.success?
 869     assert_equal expect_size, curr_fds.size, curr_fds.inspect
 870
 871     Process.kill(:QUIT, pid)
 872     wait_for_death(pid)
 873   end
 874
 875   def hup_test_common(preload, check_client=false)
 876     File.open("config.ru", "wb") { |fp| fp.syswrite(HI.gsub("HI", '#$$')) }
 877     pid_file = Tempfile.new('pid')
 878     ucfg = Tempfile.new('unicorn_test_config')
 879     ucfg.syswrite("listen '#@addr:#@port'\n")
 880     ucfg.syswrite("pid '#{pid_file.path}'\n")
 881     ucfg.syswrite("preload_app true\n") if preload
 882     ucfg.syswrite("check_client_connection true\n") if check_client
 883     ucfg.syswrite("stderr_path 'test_stderr.#$$.log'\n")
 884     ucfg.syswrite("stdout_path 'test_stdout.#$$.log'\n")
 885     pid = xfork {
 886       redirect_test_io { exec($unicorn_bin, "-D", "-c", ucfg.path) }
 887     }
 888     _, status = Process.waitpid2(pid)
 889     assert status.success?
 890     wait_master_ready("test_stderr.#$$.log")
 891     wait_workers_ready("test_stderr.#$$.log", 1)
 892     uri = URI.parse("http://#@addr:#@port/")
 893     pids = Tempfile.new('worker_pids')
 894     r, w = IO.pipe
 895     hitter = fork {
 896       r.close
 897       bodies = Hash.new(0)
 898       at_exit { pids.syswrite(bodies.inspect) }
 899       trap(:TERM) { exit(0) }
 900       nr = 0
 901       loop {
 902         rv = Net::HTTP.get(uri)
 903         pid = rv.to_i
 904         exit!(1) if pid <= 0
 905         bodies[pid] += 1
 906         nr += 1
 907         if nr == 1
 908           w.syswrite('1')
 909         elsif bodies.size > 1
 910           w.syswrite('2')
 911           sleep
 912         end
 913       }
 914     }
 915     w.close
 916     assert_equal '1', r.read(1)
 917     daemon_pid = File.read(pid_file.path).to_i
 918     assert daemon_pid > 0
 919     Process.kill(:HUP, daemon_pid)
 920     assert_equal '2', r.read(1)
 921     Process.kill(:TERM, hitter)
 922     _, hitter_status = Process.waitpid2(hitter)
 923     assert(hitter_status.success?,
 924            "invalid: #{hitter_status.inspect} #{File.read(pids.path)}" \
 925            "#{File.read("test_stderr.#$$.log")}")
 926     pids.sysseek(0)
 927     pids = eval(pids.read)
 928     assert_kind_of(Hash, pids)
 929     assert_equal 2, pids.size
 930     pids.keys.each { |x|
 931       assert_kind_of(Integer, x)
 932       assert x > 0
 933       assert pids[x] > 0
 934     }
 935     Process.kill(:QUIT, daemon_pid)
 936     wait_for_death(daemon_pid)
 937   end
 938
 939   def test_preload_app_hup
 940     hup_test_common(true)
 941   end
 942
 943   def test_hup
 944     hup_test_common(false)
 945   end
 946
 947   def test_check_client_hup
 948     hup_test_common(false, true)
 949   end
 950
 951   def test_default_listen_hup_holds_listener
 952     default_listen_lock do
 953       res, pid_path = default_listen_setup
 954       daemon_pid = File.read(pid_path).to_i
 955       Process.kill(:HUP, daemon_pid)
 956       wait_workers_ready("test_stderr.#$$.log", 1)
 957       res2 = hit(["http://#{Unicorn::Const::DEFAULT_LISTEN}/"])
 958       assert_match %r{\d+}, res2.first
 959       assert res2.first != res.first
 960       Process.kill(:QUIT, daemon_pid)
 961       wait_for_death(daemon_pid)
 962     end
 963   end
 964
 965   def test_default_listen_upgrade_holds_listener
 966     default_listen_lock do
 967       res, pid_path = default_listen_setup
 968       daemon_pid = File.read(pid_path).to_i
 969
 970       Process.kill(:USR2, daemon_pid)
 971       wait_for_file("#{pid_path}.oldbin")
 972       wait_for_file(pid_path)
 973       Process.kill(:QUIT, daemon_pid)
 974       wait_for_death(daemon_pid)
 975
 976       daemon_pid = File.read(pid_path).to_i
 977       wait_workers_ready("test_stderr.#$$.log", 1)
 978       File.truncate("test_stderr.#$$.log", 0)
 979
 980       res2 = hit(["http://#{Unicorn::Const::DEFAULT_LISTEN}/"])
 981       assert_match %r{\d+}, res2.first
 982       assert res2.first != res.first
 983
 984       Process.kill(:HUP, daemon_pid)
 985       wait_workers_ready("test_stderr.#$$.log", 1)
 986       File.truncate("test_stderr.#$$.log", 0)
 987       res3 = hit(["http://#{Unicorn::Const::DEFAULT_LISTEN}/"])
 988       assert res2.first != res3.first
 989
 990       Process.kill(:QUIT, daemon_pid)
 991       wait_for_death(daemon_pid)
 992     end
 993   end
 994
 995   def default_listen_setup
 996     File.open("config.ru", "wb") { |fp| fp.syswrite(HI.gsub("HI", '#$$')) }
 997     pid_path = (tmp = Tempfile.new('pid')).path
 998     tmp.close!
 999     ucfg = Tempfile.new('unicorn_test_config')
1000     ucfg.syswrite("pid '#{pid_path}'\n")
1001     ucfg.syswrite("stderr_path 'test_stderr.#$$.log'\n")
1002     ucfg.syswrite("stdout_path 'test_stdout.#$$.log'\n")
1003     pid = xfork {
1004       redirect_test_io { exec($unicorn_bin, "-D", "-c", ucfg.path) }
1005     }
1006     _, status = Process.waitpid2(pid)
1007     assert status.success?
1008     wait_master_ready("test_stderr.#$$.log")
1009     wait_workers_ready("test_stderr.#$$.log", 1)
1010     File.truncate("test_stderr.#$$.log", 0)
1011     res = hit(["http://#{Unicorn::Const::DEFAULT_LISTEN}/"])
1012     assert_match %r{\d+}, res.first
1013     [ res, pid_path ]
1014   end
1015
1016   # we need to flock() something to prevent these tests from running
1017   def default_listen_lock(&block)
1018     fp = File.open(FLOCK_PATH, "rb")
1019     begin
1020       fp.flock(File::LOCK_EX)
1021       begin
1022         TCPServer.new(Unicorn::Const::DEFAULT_HOST,
1023                       Unicorn::Const::DEFAULT_PORT).close
1024       rescue Errno::EADDRINUSE, Errno::EACCES
1025         warn "can't bind to #{Unicorn::Const::DEFAULT_LISTEN}"
1026         return false
1027       end
1028
1029       # unused_port should never take this, but we may run an environment
1030       # where tests are being run against older unicorns...
1031       lock_path = "#{Dir::tmpdir}/unicorn_test." \
1032                   "#{Unicorn::Const::DEFAULT_LISTEN}.lock"
1033       begin
1034         File.open(lock_path, File::WRONLY|File::CREAT|File::EXCL, 0600)
1035         yield
1036       rescue Errno::EEXIST
1037         lock_path = nil
1038         return false
1039       ensure
1040         File.unlink(lock_path) if lock_path
1041       end
1042     ensure
1043       fp.flock(File::LOCK_UN)
1044     end
1045   end
1046
1047 end if do_test