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supervisor_spec.rb
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supervisor_spec.rb
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require 'rr'
describe ServerEngine::Supervisor do
include_context 'test server and worker'
def start_supervisor(worker = nil, **config)
config[:log] ||= @log_path
config[:log_stdout] ||= false
config[:log_stderr] ||= false
if ServerEngine.windows?
config[:windows_daemon_cmdline] = windows_supervisor_cmdline(nil, worker, config)
end
sv = Supervisor.new(TestServer, worker || TestWorker, config)
t = Thread.new { sv.main }
return sv, t
end
def start_daemon(**config)
config[:log_stdout] ||= false
config[:log_stderr] ||= false
if ServerEngine.windows?
config[:windows_daemon_cmdline] = windows_daemon_cmdline
end
daemon = Daemon.new(nil, TestWorker, config)
t = Thread.new { daemon.main }
return daemon, t
end
before do
@log_path = "tmp/supervisor-test-#{SecureRandom.hex(10)}.log"
end
after do
FileUtils.rm_rf(@log_path)
end
context 'when :log=IO option is given' do
it 'can start' do
daemon, t = start_daemon(log: File.open(@log_path, "wb"))
begin
wait_for_fork
ensure
daemon.server.stop(true)
t.join
end
test_state(:worker_run).should == 1
daemon.server.logger.should be_an_instance_of(ServerEngine::DaemonLogger)
end
end
context 'when :logger option is given' do
it 'uses specified logger instance' do
logger = ServerEngine::DaemonLogger.new(@log_path)
daemon, t = start_daemon(logger: logger)
begin
wait_for_fork
ensure
daemon.server.stop(true)
t.join
end
test_state(:worker_run).should == 1
daemon.server.logger.should == logger
end
end
context 'when both :logger and :log options are given' do
it 'start ignoring :log' do
logger = ServerEngine::DaemonLogger.new(@log_path)
daemon, t = start_daemon(logger: logger, log: STDERR)
begin
wait_for_fork
ensure
daemon.server.stop(true)
t.join
end
test_state(:worker_run).should == 1
daemon.server.logger.should == logger
end
end
['signal', 'pipe'].each do |sender|
context "when using #{sender} as command_sender" do
it 'start and graceful stop' do
skip 'not supported on Windows' if ServerEngine.windows? && sender == 'signal'
sv, t = start_supervisor(command_sender: sender)
begin
wait_for_fork
test_state(:server_before_run).should == 1
test_state(:server_after_start).should == 1 # parent
ensure
sv.stop(true)
t.join
end
test_state(:server_stop).should == 1
test_state(:server_stop_graceful).should == 1
test_state(:server_restart).should == 0
test_state(:server_after_run).should == 1
test_state(:server_after_start).should == 1
end
it 'immediate stop' do
skip 'not supported on Windows' if ServerEngine.windows? && sender == 'signal'
sv, t = start_supervisor(command_sender: sender)
begin
wait_for_fork
ensure
sv.stop(false)
t.join
end
test_state(:server_stop).should == 1
test_state(:server_stop_immediate).should == 1
test_state(:server_after_run).should == 1
test_state(:server_after_start).should == 1
end
it 'graceful restart' do
skip 'not supported on Windows' if ServerEngine.windows? && sender == 'signal'
sv, t = start_supervisor(command_sender: sender)
begin
wait_for_fork
sv.restart(true)
wait_for_stop
ensure
sv.stop(true)
t.join
end
test_state(:server_stop).should == 1
test_state(:server_restart_graceful).should == 1
test_state(:server_before_run).should == 1
test_state(:server_after_run).should == 1
test_state(:server_after_start).should == 1
end
it 'immediate restart' do
skip 'not supported on Windows' if ServerEngine.windows? && sender == 'signal'
sv, t = start_supervisor(command_sender: sender)
begin
wait_for_fork
sv.restart(false)
wait_for_stop
ensure
sv.stop(true)
t.join
end
test_state(:server_stop).should == 1
test_state(:server_restart_immediate).should == 1
test_state(:server_before_run).should == 1
test_state(:server_after_run).should == 1
test_state(:server_after_start).should == 1
end
it 'reload' do
skip 'not supported on Windows' if ServerEngine.windows? && sender == 'signal'
sv, t = start_supervisor(command_sender: sender)
begin
wait_for_fork
sv.reload
ensure
sv.stop(true)
t.join
end
test_state(:server_stop).should == 1
test_state(:server_reload).should == 1
end
# TODO detach
it 'auto restart in limited ratio' do
skip 'not supported on Windows' if ServerEngine.windows? && sender == 'signal'
RR.stub(ServerEngine).dump_uncaught_error
sv, t = start_supervisor(RunErrorWorker, server_restart_wait: 1, command_sender: sender)
begin
sleep 2.5
ensure
sv.stop(true)
t.join
end
if ServerEngine.windows?
# Because launching a process on Windows is high cost,
# it doesn't often reach to 3.
test_state(:worker_run).should <= 3
else
test_state(:worker_run).should == 3
end
end
end
end
module InitializeErrorServer
def initialize
raise StandardError, "error test"
end
end
it 'initialize error' do
sv = Supervisor.new(InitializeErrorServer, TestWorker)
lambda { sv.main }.should raise_error(StandardError)
end
end