class TestRedirectionService(ScalyrTestCase):
"""Tests both the RedirectorServer and the RedirectorClient communicating together.
"""
def setUp(self):
self._client_sys = FakeSys()
self._server_sys = FakeSys()
self._fake_clock = scalyr_util.FakeClock()
self._client_channel = FakeClientChannel(self._fake_clock)
self._server_channel = FakeServerChannel(self._client_channel)
self._client = RedirectorClient(self._client_channel, sys_impl=self._client_sys, fake_clock=self._fake_clock)
self._server = RedirectorServer(self._server_channel, sys_impl=self._server_sys)
self._client.start()
self._server.start()
def test_end_to_end(self):
self._server_sys.stdout.write('Test full')
self._server.stop()
self._client.stop()
class TestRedirectionService(ScalyrTestCase):
"""Tests both the RedirectorServer and the RedirectorClient communicating together.
"""
def setUp(self):
self._client_sys = FakeSys()
self._server_sys = FakeSys()
self._fake_clock = scalyr_util.FakeClock()
self._client_channel = FakeClientChannel(self._fake_clock)
self._server_channel = FakeServerChannel(self._client_channel)
self._client = RedirectorClient(self._client_channel, sys_impl=self._client_sys, fake_clock=self._fake_clock)
self._server = RedirectorServer(self._server_channel, sys_impl=self._server_sys)
self._client.start()
self._server.start()
def test_end_to_end(self):
self._server_sys.stdout.write('Test full')
self._server.stop()
self._client.stop()
class TestRedirectorClient(ScalyrTestCase):
"""Test the RedirectorClient by faking out the client channel and also the clock.
"""
def setUp(self):
self._fake_sys = FakeSys()
# Since the client is an actual other thread that blocks waiting for input from the server, we have to
# simulate the time using a fake clock. That will allow us to wait up the client thread from time to time.
self._fake_clock = scalyr_util.FakeClock()
# The fake channel allows us to insert bytes being sent by the server.
self._client_channel = FakeClientChannel(self._fake_clock)
self._client = RedirectorClient(self._client_channel, sys_impl=self._fake_sys, fake_clock=self._fake_clock)
self._client.start()
# Wait until the client thread begins to block for the initial accept from the server.
self._fake_clock.block_until_n_waiting_threads(1)
def tearDown(self):
if self._client is not None:
self._client.stop(wait_on_join=False)
self._fake_clock.advance_time(set_to=59.0)
self._client.join()
def test_receiving_str(self):
# Simulate accepting the connection.
self._accept_client_connection()
self._send_to_client(0, 'Testing')
# Wait until have bytes written to stdout by the client thread.
self._fake_sys.stdout.wait_for_bytes(1.0)
self.assertEquals(self._fake_sys.stdout.last_write, 'Testing')
def test_receiving_unicode(self):
self._accept_client_connection()
self._send_to_client(0, u'caf\xe9')
self._fake_sys.stdout.wait_for_bytes(1.0)
self.assertEquals(self._fake_sys.stdout.last_write, u'caf\xe9')
def test_connection_timeout(self):
# We advance the time past 60 seconds which is the connection time out.
self._fake_clock.advance_time(set_to=61.0)
got_it = False
try:
# Even though we have not called stop on the thread or the server hasn't closed the connection,
# we should still see the client thread terminate because of the exception it raises.
self._client.join()
except RedirectorError:
got_it = True
self._client = None
self.assertTrue(got_it)
def test_close_from_server(self):
self._accept_client_connection()
self._send_to_client(-1, '')
# Even though we haven't called stop on the client thread, it should still end because the server sent
# the signal to stop/close.
self._client.join()
self._client = None
def test_stopped_during_connection(self):
self._client.stop(wait_on_join=False)
# We have wake all threads so the client thread will notice its thread has been stopped.
self._fake_clock.wake_all_threads()
self._client.join()
self._client = None
def test_stopped_during_reading(self):
self._accept_client_connection()
self._client.stop(wait_on_join=False)
# We have wake all threads so the client thread will notice its thread has been stopped.
self._fake_clock.wake_all_threads()
self._client.join()
self._client = None
def _accept_client_connection(self):
self._client_channel.simulate_server_connect()
def _send_to_client(self, stream_id, content):
encoded_content = unicode(content).encode('utf-8')
code = len(encoded_content) * 2 + stream_id
self._client_channel.simulate_server_write(struct.pack('i', code) + encoded_content)
class TestRedirectorClient(ScalyrTestCase):
"""Test the RedirectorClient by faking out the client channel and also the clock."""
def setUp(self):
super(TestRedirectorClient, self).setUp()
self._fake_sys = FakeSys()
# Since the client is an actual other thread that blocks waiting for input from the server, we have to
# simulate the time using a fake clock. That will allow us to wait up the client thread from time to time.
self._fake_clock = scalyr_util.FakeClock()
# The fake channel allows us to insert bytes being sent by the server.
self._client_channel = FakeClientChannel(self._fake_clock)
self._client = RedirectorClient(self._client_channel,
sys_impl=self._fake_sys,
fake_clock=self._fake_clock)
self._client.start()
# Wait until the client thread begins to block for the initial accept from the server.
self._fake_clock.block_until_n_waiting_threads(1)
def tearDown(self):
if self._client is not None:
self._client.stop(wait_on_join=False)
self._fake_clock.advance_time(set_to=59.0)
self._client.join()
def test_receiving_bytes(self):
# Simulate accepting the connection.
self._accept_client_connection()
self._send_to_client(0, "Testing")
# Wait until have bytes written to stdout by the client thread.
self._fake_sys.stdout.wait_for_bytes(1.0)
self.assertEquals(self._fake_sys.stdout.last_write, "Testing")
def test_receiving_unicode(self):
self._accept_client_connection()
self._send_to_client(0, "caf\xe9")
self._fake_sys.stdout.wait_for_bytes(1.0)
self.assertEquals(self._fake_sys.stdout.last_write, "caf\xe9")
def test_connection_timeout(self):
# We advance the time past 60 seconds which is the connection time out.
self._fake_clock.advance_time(set_to=61.0)
got_it = False
try:
# Even though we have not called stop on the thread or the server hasn't closed the connection,
# we should still see the client thread terminate because of the exception it raises.
self._client.join()
except RedirectorError:
got_it = True
self._client = None
self.assertTrue(got_it)
def test_close_from_server(self):
self._accept_client_connection()
self._send_to_client(-1, "")
# Even though we haven't called stop on the client thread, it should still end because the server sent
# the signal to stop/close.
self._client.join()
self._client = None
def test_stopped_during_connection(self):
self._client.stop(wait_on_join=False)
# We have wake all threads so the client thread will notice its thread has been stopped.
self._fake_clock.wake_all_threads()
self._client.join()
self._client = None
def test_stopped_during_reading(self):
self._accept_client_connection()
self._client.stop(wait_on_join=False)
# We have wake all threads so the client thread will notice its thread has been stopped.
self._fake_clock.wake_all_threads()
self._client.join()
self._client = None
def _accept_client_connection(self):
self._client_channel.simulate_server_connect()
def _send_to_client(self, stream_id, content):
if type(content) is six.text_type:
encoded_content = six.text_type(content).encode("utf-8")
else:
encoded_content = content
code = len(encoded_content) * 2 + stream_id
# 2->TODO struct.pack|unpack in python < 2.7.7 does not allow unicode format string.
self._client_channel.simulate_server_write(
compat.struct_pack_unicode("i", code) + encoded_content)