53fedfca2a
Support setting a weighting value for each node that will determine the proportion of load balancing requests that it receives in relation to the other defined servers and their weights. Also adds a file describing the worker JSON message versioning. Fixes bug 1117349 Change-Id: Ie1460c165f03b0523ee28d864b74ea9e5858b256
91 lines
3.8 KiB
Python
91 lines
3.8 KiB
Python
import testtools
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import tests.mock_objects
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from libra.worker.drivers.haproxy.driver import HAProxyDriver
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class TestHAProxyDriver(testtools.TestCase):
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def setUp(self):
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super(TestHAProxyDriver, self).setUp()
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self.driver = HAProxyDriver('tests.mock_objects.FakeOSServices')
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def testInit(self):
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""" Test the HAProxy init() method """
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self.driver.init()
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self.assertIsInstance(self.driver._config, dict)
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def testAddProtocol(self):
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""" Test the HAProxy set_protocol() method """
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proto = 'http'
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self.driver.add_protocol(proto, None)
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self.assertIn(proto, self.driver._config)
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self.assertEqual(self.driver._config[proto]['bind_address'], '0.0.0.0')
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self.assertEqual(self.driver._config[proto]['bind_port'], 80)
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proto = 'tcp'
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self.driver.add_protocol(proto, 443)
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self.assertIn(proto, self.driver._config)
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self.assertEqual(self.driver._config[proto]['bind_address'], '0.0.0.0')
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self.assertEqual(self.driver._config[proto]['bind_port'], 443)
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def testAddTCPRequiresPort(self):
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e = self.assertRaises(Exception, self.driver.add_protocol, 'tcp', None)
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self.assertEqual("Port is required for TCP protocol.", e.message)
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def testAddServer(self):
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""" Test the HAProxy add_server() method """
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proto = 'http'
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self.driver.add_protocol(proto, None)
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self.driver.add_server(proto, '1.2.3.4', 7777)
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self.driver.add_server(proto, '5.6.7.8', 8888)
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self.assertIn(proto, self.driver._config)
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self.assertIn('servers', self.driver._config[proto])
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servers = self.driver._config[proto]['servers']
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self.assertEqual(len(servers), 2)
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self.assertEqual(servers[0], ('1.2.3.4', 7777, 1))
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self.assertEqual(servers[1], ('5.6.7.8', 8888, 1))
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def testSetAlgorithm(self):
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""" Test the HAProxy set_algorithm() method """
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proto = 'http'
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self.driver.add_protocol(proto, None)
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self.driver.set_algorithm(proto, self.driver.ROUNDROBIN)
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self.assertIn(proto, self.driver._config)
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self.assertIn('algorithm', self.driver._config[proto])
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self.assertEqual(self.driver._config[proto]['algorithm'], 'roundrobin')
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self.driver.set_algorithm(proto, self.driver.LEASTCONN)
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self.assertEqual(self.driver._config[proto]['algorithm'], 'leastconn')
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e = self.assertRaises(Exception, self.driver.set_algorithm, proto, 99)
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self.assertEqual("Invalid algorithm: http", e.message)
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def testServerWeightInt(self):
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""" Test setting integer server weights """
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proto = 'http'
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self.driver.add_protocol(proto, None)
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self.driver.add_server(proto, '1.2.3.4', 7777, 10)
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servers = self.driver._config[proto]['servers']
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self.assertEqual(len(servers), 1)
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self.assertEqual(servers[0], ('1.2.3.4', 7777, 10))
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def testServerWeightStr(self):
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""" Test setting string server weights """
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proto = 'http'
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self.driver.add_protocol(proto, None)
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self.driver.add_server(proto, '1.2.3.4', 7777, "20")
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servers = self.driver._config[proto]['servers']
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self.assertEqual(len(servers), 1)
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self.assertEqual(servers[0], ('1.2.3.4', 7777, 20))
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def testServerWeightInvalid(self):
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""" Test setting string server weights """
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proto = 'http'
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self.driver.add_protocol(proto, None)
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e = self.assertRaises(
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Exception,
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self.driver.add_server, proto, '1.2.3.4', 7777, 257)
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self.assertEqual("Server 'weight' 257 exceeds max of 256", e.message)
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e = self.assertRaises(
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Exception,
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self.driver.add_server, proto, '1.2.3.4', 7777, "abc")
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self.assertEqual("Non-integer 'weight' value: 'abc'", e.message)
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