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| | # Copyright (c) 2009 Eric Wong
STDIN.sync = STDOUT.sync = STDERR.sync = true
require 'test/test_helper'
require 'pathname'
require 'tempfile'
require 'fileutils'
do_test = true
DEFAULT_TRIES = 1000
DEFAULT_RES = 0.2
$unicorn_bin = ENV['UNICORN_TEST_BIN'] || "unicorn"
redirect_test_io do
do_test = system($unicorn_bin, '-v')
end
unless do_test
STDERR.puts "#{$unicorn_bin} not found in PATH=#{ENV['PATH']}, " \
"skipping this test"
end
begin
require 'rack'
rescue LoadError
STDERR.puts "Unable to load Rack, skipping this test"
do_test = false
end
class ExecTest < Test::Unit::TestCase
trap('QUIT', 'IGNORE')
HI = <<-EOS
use Rack::ContentLength
run proc { |env| [ 200, { 'Content-Type' => 'text/plain' }, "HI\\n" ] }
EOS
HELLO = <<-EOS
class Hello
def call(env)
[ 200, { 'Content-Type' => 'text/plain' }, "HI\\n" ]
end
end
EOS
COMMON_TMP = Tempfile.new('unicorn_tmp') unless defined?(COMMON_TMP)
HEAVY_CFG = <<-EOS
worker_processes 4
timeout 30
backlog 128
logger Logger.new('#{COMMON_TMP.path}')
before_fork do |server, worker_nr|
server.logger.info "before_fork: worker=\#{worker_nr}"
end
EOS
def setup
@pwd = Dir.pwd
@tmpfile = Tempfile.new('unicorn_exec_test')
@tmpdir = @tmpfile.path
@tmpfile.close!
Dir.mkdir(@tmpdir)
Dir.chdir(@tmpdir)
@addr = ENV['UNICORN_TEST_ADDR'] || '127.0.0.1'
@port = unused_port(@addr)
@sockets = []
@start_pid = $$
end
def teardown
return if @start_pid != $$
Dir.chdir(@pwd)
FileUtils.rmtree(@tmpdir)
@sockets.each { |path| File.unlink(path) rescue nil }
loop do
Process.kill('-QUIT', 0)
begin
Process.waitpid(-1, Process::WNOHANG) or break
rescue Errno::ECHILD
break
end
end
end
def test_basic
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
pid = fork do
redirect_test_io { exec($unicorn_bin, "-l", "#{@addr}:#{@port}") }
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
assert_shutdown(pid)
end
def test_help
redirect_test_io do
assert(system($unicorn_bin, "-h"), "help text returns true")
end
assert_equal 0, File.stat("test_stderr.#$$.log").size
assert_not_equal 0, File.stat("test_stdout.#$$.log").size
lines = File.readlines("test_stdout.#$$.log")
# Be considerate of the on-call technician working from their
# mobile phone or netbook on a slow connection :)
assert lines.size <= 24, "help height fits in an ANSI terminal window"
lines.each do |line|
assert line.size <= 80, "help width fits in an ANSI terminal window"
end
end
def test_broken_reexec_config
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
pid_file = "#{@tmpdir}/test.pid"
old_file = "#{pid_file}.oldbin"
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite("listeners %w(#{@addr}:#{@port})\n")
ucfg.syswrite("pid %(#{pid_file})\n")
ucfg.syswrite("logger Logger.new(%(#{@tmpdir}/log))\n")
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
wait_for_file(pid_file)
Process.waitpid(pid)
Process.kill('USR2', File.read(pid_file).to_i)
wait_for_file(old_file)
wait_for_file(pid_file)
Process.kill('QUIT', File.read(old_file).to_i)
ucfg.syswrite("timeout %(#{pid_file})\n") # introduce a bug
current_pid = File.read(pid_file).to_i
Process.kill('USR2', current_pid)
# wait for pid_file to restore itself
tries = DEFAULT_TRIES
begin
while current_pid != File.read(pid_file).to_i
sleep(DEFAULT_RES) and (tries -= 1) > 0
end
rescue Errno::ENOENT
(sleep(DEFAULT_RES) and (tries -= 1) > 0) and retry
end
assert_equal current_pid, File.read(pid_file).to_i
tries = DEFAULT_TRIES
while File.exist?(old_file)
(sleep(DEFAULT_RES) and (tries -= 1) > 0) or break
end
assert ! File.exist?(old_file), "oldbin=#{old_file} gone"
port2 = unused_port(@addr)
# fix the bug
ucfg.sysseek(0)
ucfg.truncate(0)
ucfg.syswrite("listeners %w(#{@addr}:#{@port} #{@addr}:#{port2})\n")
ucfg.syswrite("pid %(#{pid_file})\n")
Process.kill('USR2', current_pid)
wait_for_file(old_file)
wait_for_file(pid_file)
new_pid = File.read(pid_file).to_i
assert_not_equal current_pid, new_pid
assert_equal current_pid, File.read(old_file).to_i
results = retry_hit(["http://#{@addr}:#{@port}/",
"http://#{@addr}:#{port2}/"])
assert_equal String, results[0].class
assert_equal String, results[1].class
assert_nothing_raised do
Process.kill('QUIT', current_pid)
Process.kill('QUIT', new_pid)
end
end
def test_broken_reexec_ru
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
pid_file = "#{@tmpdir}/test.pid"
old_file = "#{pid_file}.oldbin"
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite("pid %(#{pid_file})\n")
ucfg.syswrite("logger Logger.new(%(#{@tmpdir}/log))\n")
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
wait_for_file(pid_file)
Process.waitpid(pid)
Process.kill('USR2', File.read(pid_file).to_i)
wait_for_file(old_file)
wait_for_file(pid_file)
Process.kill('QUIT', File.read(old_file).to_i)
File.unlink("config.ru") # break reloading
current_pid = File.read(pid_file).to_i
Process.kill('USR2', current_pid)
# wait for pid_file to restore itself
tries = DEFAULT_TRIES
begin
while current_pid != File.read(pid_file).to_i
sleep(DEFAULT_RES) and (tries -= 1) > 0
end
rescue Errno::ENOENT
(sleep(DEFAULT_RES) and (tries -= 1) > 0) and retry
end
assert_equal current_pid, File.read(pid_file).to_i
tries = DEFAULT_TRIES
while File.exist?(old_file)
(sleep(DEFAULT_RES) and (tries -= 1) > 0) or break
end
assert ! File.exist?(old_file), "oldbin=#{old_file} gone"
# fix the bug
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
Process.kill('USR2', current_pid)
wait_for_file(old_file)
wait_for_file(pid_file)
new_pid = File.read(pid_file).to_i
assert_not_equal current_pid, new_pid
assert_equal current_pid, File.read(old_file).to_i
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
assert_nothing_raised do
Process.kill('QUIT', current_pid)
Process.kill('QUIT', new_pid)
end
end
def test_unicorn_config_listeners_overrides_cli
port2 = unused_port(@addr)
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
# listeners = [ ... ] => should _override_ command-line options
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite("listeners %w(#{@addr}:#{@port})\n")
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-c#{ucfg.path}", "-l#{@addr}:#{port2}")
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_raises(Errno::ECONNREFUSED) { TCPSocket.new(@addr, port2) }
assert_equal String, results[0].class
assert_shutdown(pid)
end
def test_unicorn_config_listen_augments_cli
port2 = unused_port(@addr)
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite("listen '#{@addr}:#{@port}'\n")
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-c#{ucfg.path}", "-l#{@addr}:#{port2}")
end
end
uris = [@port, port2].map { |i| "http://#{@addr}:#{i}/" }
results = retry_hit(uris)
assert_equal results.size, uris.size
assert_equal String, results[0].class
assert_equal String, results[1].class
assert_shutdown(pid)
end
def test_weird_config_settings
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite(HEAVY_CFG)
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-c#{ucfg.path}", "-l#{@addr}:#{@port}")
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
wait_master_ready(COMMON_TMP.path)
wait_workers_ready(COMMON_TMP.path, 4)
bf = File.readlines(COMMON_TMP.path).grep(/\bbefore_fork: worker=/)
assert_equal 4, bf.size
rotate = Tempfile.new('unicorn_rotate')
assert_nothing_raised do
File.rename(COMMON_TMP.path, rotate.path)
Process.kill('USR1', pid)
end
wait_for_file(COMMON_TMP.path)
assert File.exist?(COMMON_TMP.path), "#{COMMON_TMP.path} exists"
# USR1 should've been passed to all workers
tries = DEFAULT_TRIES
log = File.readlines(rotate.path)
while (tries -= 1) > 0 && log.grep(/rotating logs\.\.\./).size < 4
sleep DEFAULT_RES
log = File.readlines(rotate.path)
end
assert_equal 4, log.grep(/worker=\d+ rotating logs\.\.\./).size
assert_equal 0, log.grep(/done rotating logs/).size
tries = DEFAULT_TRIES
log = File.readlines(COMMON_TMP.path)
while (tries -= 1) > 0 && log.grep(/done rotating logs/).size < 4
sleep DEFAULT_RES
log = File.readlines(COMMON_TMP.path)
end
assert_equal 4, log.grep(/worker=\d+ done rotating logs/).size
assert_equal 0, log.grep(/rotating logs\.\.\./).size
assert_nothing_raised { Process.kill('QUIT', pid) }
status = nil
assert_nothing_raised { pid, status = Process.waitpid2(pid) }
assert status.success?, "exited successfully"
end
def test_read_embedded_cli_switches
File.open("config.ru", "wb") do |fp|
fp.syswrite("#\\ -p #{@port} -o #{@addr}\n")
fp.syswrite(HI)
end
pid = fork { redirect_test_io { exec($unicorn_bin) } }
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
assert_shutdown(pid)
end
def test_config_ru_alt_path
config_path = "#{@tmpdir}/foo.ru"
File.open(config_path, "wb") { |fp| fp.syswrite(HI) }
pid = fork do
redirect_test_io do
Dir.chdir("/")
exec($unicorn_bin, "-l#{@addr}:#{@port}", config_path)
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
assert_shutdown(pid)
end
def test_load_module
libdir = "#{@tmpdir}/lib"
FileUtils.mkpath([ libdir ])
config_path = "#{libdir}/hello.rb"
File.open(config_path, "wb") { |fp| fp.syswrite(HELLO) }
pid = fork do
redirect_test_io do
Dir.chdir("/")
exec($unicorn_bin, "-l#{@addr}:#{@port}", config_path)
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
assert_shutdown(pid)
end
def test_reexec
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
pid_file = "#{@tmpdir}/test.pid"
pid = fork do
redirect_test_io do
exec($unicorn_bin, "-l#{@addr}:#{@port}", "-P#{pid_file}")
end
end
reexec_basic_test(pid, pid_file)
end
def test_reexec_alt_config
config_file = "#{@tmpdir}/foo.ru"
File.open(config_file, "wb") { |fp| fp.syswrite(HI) }
pid_file = "#{@tmpdir}/test.pid"
pid = fork do
redirect_test_io do
exec($unicorn_bin, "-l#{@addr}:#{@port}", "-P#{pid_file}", config_file)
end
end
reexec_basic_test(pid, pid_file)
end
def test_unicorn_config_file
pid_file = "#{@tmpdir}/test.pid"
sock = Tempfile.new('unicorn_test_sock')
sock_path = sock.path
sock.close!
@sockets << sock_path
log = Tempfile.new('unicorn_test_log')
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite("listen \"#{sock_path}\"\n")
ucfg.syswrite("pid \"#{pid_file}\"\n")
ucfg.syswrite("logger Logger.new('#{log.path}')\n")
ucfg.close
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-l#{@addr}:#{@port}",
"-P#{pid_file}", "-c#{ucfg.path}")
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
wait_master_ready(log.path)
assert File.exist?(pid_file), "pid_file created"
assert_equal pid, File.read(pid_file).to_i
assert File.socket?(sock_path), "socket created"
assert_nothing_raised do
sock = UNIXSocket.new(sock_path)
sock.syswrite("GET / HTTP/1.0\r\n\r\n")
results = sock.sysread(4096)
end
assert_equal String, results.class
# try reloading the config
sock = Tempfile.new('unicorn_test_sock')
new_sock_path = sock.path
@sockets << new_sock_path
sock.close!
new_log = Tempfile.new('unicorn_test_log')
new_log.sync = true
assert_equal 0, new_log.size
assert_nothing_raised do
ucfg = File.open(ucfg.path, "wb")
ucfg.syswrite("listen \"#{new_sock_path}\"\n")
ucfg.syswrite("pid \"#{pid_file}\"\n")
ucfg.syswrite("logger Logger.new('#{new_log.path}')\n")
ucfg.close
Process.kill('HUP', pid)
end
wait_for_file(new_sock_path)
assert File.socket?(new_sock_path), "socket exists"
@sockets.each do |path|
assert_nothing_raised do
sock = UNIXSocket.new(path)
sock.syswrite("GET / HTTP/1.0\r\n\r\n")
results = sock.sysread(4096)
end
assert_equal String, results.class
end
assert_not_equal 0, new_log.size
reexec_usr2_quit_test(pid, pid_file)
end
def test_daemonize_reexec
pid_file = "#{@tmpdir}/test.pid"
log = Tempfile.new('unicorn_test_log')
ucfg = Tempfile.new('unicorn_test_config')
ucfg.syswrite("pid \"#{pid_file}\"\n")
ucfg.syswrite("logger Logger.new('#{log.path}')\n")
ucfg.close
File.open("config.ru", "wb") { |fp| fp.syswrite(HI) }
pid = xfork do
redirect_test_io do
exec($unicorn_bin, "-D", "-l#{@addr}:#{@port}", "-c#{ucfg.path}")
end
end
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
wait_for_file(pid_file)
new_pid = File.read(pid_file).to_i
assert_not_equal pid, new_pid
pid, status = Process.waitpid2(pid)
assert status.success?, "original process exited successfully"
assert_nothing_raised { Process.kill(0, new_pid) }
reexec_usr2_quit_test(new_pid, pid_file)
end
private
# sometimes the server may not come up right away
def retry_hit(uris = [])
tries = DEFAULT_TRIES
begin
hit(uris)
rescue Errno::ECONNREFUSED => err
if (tries -= 1) > 0
sleep DEFAULT_RES
retry
end
raise err
end
end
def assert_shutdown(pid)
wait_master_ready("#{@tmpdir}/test_stderr.#{pid}.log")
assert_nothing_raised { Process.kill('QUIT', pid) }
status = nil
assert_nothing_raised { pid, status = Process.waitpid2(pid) }
assert status.success?, "exited successfully"
end
def wait_workers_ready(path, nr_workers)
tries = DEFAULT_TRIES
lines = []
while (tries -= 1) > 0
begin
lines = File.readlines(path).grep(/worker=\d+ spawned/)
lines.size == nr_workers and return
rescue Errno::ENOENT
end
sleep DEFAULT_RES
end
raise "#{nr_workers} workers never became ready:" \
"\n\t#{lines.join("\n\t")}\n"
end
def wait_master_ready(master_log)
tries = DEFAULT_TRIES
while (tries -= 1) > 0
begin
File.readlines(master_log).grep(/master process ready/)[0] and return
rescue Errno::ENOENT
end
sleep DEFAULT_RES
end
raise "master process never became ready"
end
def reexec_usr2_quit_test(pid, pid_file)
assert File.exist?(pid_file), "pid file OK"
assert ! File.exist?("#{pid_file}.oldbin"), "oldbin pid file"
assert_nothing_raised { Process.kill('USR2', pid) }
assert_nothing_raised { retry_hit(["http://#{@addr}:#{@port}/"]) }
wait_for_file("#{pid_file}.oldbin")
wait_for_file(pid_file)
# kill old master process
assert_not_equal pid, File.read(pid_file).to_i
assert_equal pid, File.read("#{pid_file}.oldbin").to_i
assert_nothing_raised { Process.kill('QUIT', pid) }
assert_not_equal pid, File.read(pid_file).to_i
assert_nothing_raised { retry_hit(["http://#{@addr}:#{@port}/"]) }
wait_for_file(pid_file)
assert_nothing_raised { retry_hit(["http://#{@addr}:#{@port}/"]) }
assert_nothing_raised { Process.kill('QUIT', File.read(pid_file).to_i) }
end
def reexec_basic_test(pid, pid_file)
results = retry_hit(["http://#{@addr}:#{@port}/"])
assert_equal String, results[0].class
assert_nothing_raised { Process.kill(0, pid) }
master_log = "#{@tmpdir}/test_stderr.#{pid}.log"
wait_master_ready(master_log)
File.truncate(master_log, 0)
nr = 50
kill_point = 2
assert_nothing_raised do
nr.times do |i|
hit(["http://#{@addr}:#{@port}/#{i}"])
i == kill_point and Process.kill('HUP', pid)
end
end
wait_master_ready(master_log)
assert File.exist?(pid_file), "pid=#{pid_file} exists"
new_pid = File.read(pid_file).to_i
assert_not_equal pid, new_pid
assert_nothing_raised { Process.kill(0, new_pid) }
assert_nothing_raised { Process.kill('QUIT', new_pid) }
end
def wait_for_file(path)
tries = DEFAULT_TRIES
while (tries -= 1) > 0 && ! File.exist?(path)
sleep DEFAULT_RES
end
assert File.exist?(path), "path=#{path} exists #{caller.inspect}"
end
def xfork(&block)
fork do
ObjectSpace.each_object(Tempfile) do |tmp|
ObjectSpace.undefine_finalizer(tmp)
end
yield
end
end
end if do_test
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