204 lines
6.7 KiB
Python
204 lines
6.7 KiB
Python
# Copyright (c) 2015-2016 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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import unittest
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from unittest import mock
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from storlets.sbus import command as sbus_cmd
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from storlets.sbus.file_description import SBUS_FD_SERVICE_OUT
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from storlets.sbus.datagram import SBusFileDescriptor, SBusServiceDatagram
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from storlets.agent.common.server import EXIT_SUCCESS, command_handler, \
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CommandResponse, CommandFailure, CommandSuccess, SBusServer
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from tests.unit import FakeLogger
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class TestCommandResponse(unittest.TestCase):
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def test_init(self):
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resp = CommandResponse(True, 'ok')
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self.assertTrue(resp.status)
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self.assertEqual('ok', resp.message)
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self.assertTrue(resp.iterable)
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self.assertIsNone(resp.task_id)
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resp = CommandResponse(False, 'error', False)
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self.assertFalse(resp.status)
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self.assertEqual('error', resp.message)
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self.assertFalse(resp.iterable)
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self.assertIsNone(resp.task_id)
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resp = CommandResponse(True, 'ok', task_id='foo')
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self.assertTrue(resp.status)
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self.assertEqual('ok', resp.message)
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self.assertTrue(resp.iterable)
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self.assertEqual('foo', resp.task_id)
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def test_report_message(self):
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resp = CommandResponse(True, 'msg', True)
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self.assertEqual({'status': True, 'message': 'msg'},
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json.loads(resp.report_message))
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resp = CommandResponse(True, 'msg', True, 'foo')
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self.assertEqual({'status': True, 'message': 'msg', 'task_id': 'foo'},
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json.loads(resp.report_message))
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class TestCommandSuccess(unittest.TestCase):
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def test_init(self):
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resp = CommandSuccess('ok')
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self.assertTrue(resp.status)
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self.assertEqual('ok', resp.message)
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self.assertTrue(resp.iterable)
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class TestCommandFailure(unittest.TestCase):
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def test_init(self):
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resp = CommandFailure('error')
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self.assertFalse(resp.status)
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self.assertEqual('error', resp.message)
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self.assertTrue(resp.iterable)
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class TestCommandHandler(unittest.TestCase):
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def test_command_handler(self):
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@command_handler
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def test_func():
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pass
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self.assertTrue(hasattr(test_func, 'is_command_handler'))
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self.assertTrue(test_func.is_command_handler)
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class TestSBusServer(unittest.TestCase):
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def setUp(self):
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self.logger = FakeLogger()
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self.sbus_path = 'path/to/pipe'
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self.server = SBusServer(self.sbus_path, self.logger)
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def test_get_handler(self):
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# halt
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self.assertEqual(
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self.server.halt, self.server.get_handler(sbus_cmd.SBUS_CMD_HALT))
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# ping
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self.assertEqual(
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self.server.ping, self.server.get_handler(sbus_cmd.SBUS_CMD_PING))
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# daemon status is defined as sbus command, but the command is not
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# implemented in SBusServer
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with self.assertRaises(ValueError):
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self.server.get_handler('SBUS_CMD_DAEMON_STATUS')
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# invalid command
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with self.assertRaises(ValueError):
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self.server.get_handler('FOO')
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# unknown command
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with self.assertRaises(ValueError):
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self.server.get_handler('SBUS_CMD_UNKNOWN')
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def create_fake_sbus_class(scenario):
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"""
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:param scenario: a list of tuples [(command, return_value)]
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"""
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class FakeSBus(object):
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"""
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Fake SBus communication according fed scenario.
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The scenario must be ordered by calls
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"""
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def __init__(self):
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self.scenario = scenario
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self.called = []
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def _get_fake_response(self, command, *args):
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self.called.append((command, args))
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try:
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ret_val = self.scenario.pop(0)
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except IndexError:
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raise AssertionError(
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'Daemon calls SBus command more than expected,'
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' need "%s" call at least' % command)
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if ret_val[0] != command:
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raise AssertionError(
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"Expected scenario doesn't happen, actual daemon calls %s"
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"for SBus but %d is expected" % (command, ret_val[0]))
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return ret_val[1]
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def listen(self, fd, timeout=0):
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return self._get_fake_response('listen', fd)
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def command(self):
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return self._get_fake_response('command')
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def create(self, sbus_path):
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return self._get_fake_response('create', sbus_path)
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def receive(self, fd):
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return self._get_fake_response('receive', fd)
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return FakeSBus
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class TestSBusServerMain(unittest.TestCase):
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def _get_test_server(self):
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return SBusServer(self.sbus_path, self.logger)
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def setUp(self):
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self.logger = FakeLogger()
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self.sbus_path = 'fake_path'
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self.server = self._get_test_server()
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def _test_main_loop_stop(self, stop_command):
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sfds = [SBusFileDescriptor(SBUS_FD_SERVICE_OUT, 1)]
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scenario = [
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('create', 1),
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('listen', 1),
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('receive', SBusServiceDatagram(command=stop_command, sfds=sfds,
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params=None, task_id=None)),
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]
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fake_sbus_class = create_fake_sbus_class(scenario)
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with mock.patch('storlets.agent.common.server.SBus', fake_sbus_class):
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with mock.patch('os.fdopen'):
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ret = self.server.main_loop()
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self.assertEqual(EXIT_SUCCESS, ret)
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# sanity for no error and no warning
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self.assertEqual([], self.logger.get_log_lines('error'))
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self.assertEqual([], self.logger.get_log_lines('warn'))
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def _test_main_loop_timeout(self):
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scenario = [
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('create', 1),
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('listen', 0),
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('listen', 0),
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('listen', 0),
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('listen', 0)
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]
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self.server.listen_timeout = self.server.loop_timeout * 4
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fake_sbus_class = create_fake_sbus_class(scenario)
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with mock.patch('storlets.agent.common.server.SBus', fake_sbus_class):
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with mock.patch('os.fdopen'):
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ret = self.server.main_loop()
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self.assertEqual(EXIT_SUCCESS, ret)
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if __name__ == '__main__':
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unittest.main()
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