def test_bad_add(self):
base = {
'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
# no dev
busted = dict(base, rounds=[[['add']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# no weight
busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6200/d7']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# too many fields
busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6200/d7', 1, 2]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# can't parse
busted = dict(base, rounds=[[['add', 'not a good value', 100]]])
# N.B. the ValueError's coming out of ring.utils.parse_add_value
# are already pretty good
expected = "Invalid device specifier (round 0, command 0): " \
"Invalid add value: not a good value"
try:
parse_scenario(json.dumps(busted))
except ValueError as err:
self.assertEqual(str(err), expected)
# negative weight
busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6200/d7', -1]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
def test_bad_set_weight(self):
base = {
'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
# no dev
busted = dict(base, rounds=[[['set_weight']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# no weight
busted = dict(base, rounds=[[['set_weight', 0]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# bad dev id
busted = dict(base, rounds=[[['set_weight', 'not an int', 90]]])
expected = "Invalid device ID in set_weight (round 0, command 0): " \
"invalid literal for int() with base 10: 'not an int'"
try:
parse_scenario(json.dumps(busted))
except ValueError as e:
self.assertEqual(str(e), expected)
# negative weight
busted = dict(base, rounds=[[['set_weight', 1, -1]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# bogus weight
busted = dict(base, rounds=[[['set_weight', 1, 'bogus']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
def test_bad_set_weight(self):
base = {
'replicas': 3,
'part_power': 8,
'random_seed': 123,
'overload': 0
}
# no dev
busted = dict(base, rounds=[[['set_weight']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# no weight
busted = dict(base, rounds=[[['set_weight', 0]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# bad dev id
busted = dict(base, rounds=[[['set_weight', 'not an int', 90]]])
expected = "Invalid device ID in set_weight (round 0, command 0): " \
"invalid literal for int() with base 10: 'not an int'"
try:
parse_scenario(json.dumps(busted))
except ValueError as e:
self.assertEqual(str(e), expected)
# negative weight
busted = dict(base, rounds=[[['set_weight', 1, -1]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# bogus weight
busted = dict(base, rounds=[[['set_weight', 1, 'bogus']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
def test_bad_add(self):
base = {
'replicas': 3,
'part_power': 8,
'random_seed': 123,
'overload': 0
}
# no dev
busted = dict(base, rounds=[[['add']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# no weight
busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6000/d7']]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# too many fields
busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6000/d7', 1, 2]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
# can't parse
busted = dict(base, rounds=[[['add', 'not a good value', 100]]])
# N.B. the ValueError's coming out of ring.utils.parse_add_value
# are already pretty good
expected = "Invalid device specifier (round 0, command 0): " \
"Invalid add value: not a good value"
try:
parse_scenario(json.dumps(busted))
except ValueError as err:
self.assertEqual(str(err), expected)
# negative weight
busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6000/d7', -1]]])
self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
def test_good(self):
scenario = {
'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100],
['add', 'z2-3.4.5.6:7/sda9', 200]],
[['set_weight', 0, 150]],
[['remove', 1]]]}
parsed = parse_scenario(json.dumps(scenario))
self.assertEqual(parsed['replicas'], 3)
self.assertEqual(parsed['part_power'], 8)
self.assertEqual(parsed['random_seed'], 123)
self.assertEqual(parsed['overload'], 0)
self.assertEqual(parsed['rounds'], [
[['add', {'device': 'sda8',
'ip': '3.4.5.6',
'meta': '',
'port': 7,
'region': 1,
'replication_ip': '3.4.5.6',
'replication_port': 7,
'weight': 100.0,
'zone': 2}],
['add', {'device': u'sda9',
'ip': u'3.4.5.6',
'meta': '',
'port': 7,
'region': 1,
'replication_ip': '3.4.5.6',
'replication_port': 7,
'weight': 200.0,
'zone': 2}]],
[['set_weight', 0, 150.0]],
[['remove', 1]]])
def test_it_runs(self, tempdir):
builder_path = os.path.join(tempdir, 'test.builder')
scenario = {
'replicas':
3,
'part_power':
8,
'random_seed':
123,
'overload':
0,
'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100],
['add', 'z2-3.4.5.6:7/sda9', 200],
['add', 'z2-3.4.5.6:7/sda10', 200],
['add', 'z2-3.4.5.6:7/sda11', 200]],
[['set_weight', 0, 150]], [['remove', 1]],
[['save', builder_path]]]
}
parsed = parse_scenario(json.dumps(scenario))
fake_stdout = StringIO()
with mock.patch('sys.stdout', fake_stdout):
run_scenario(parsed)
# Just test that it produced some output as it ran; the fact that
# this doesn't crash and produces output that resembles something
# useful is good enough.
self.assertTrue('Rebalance' in fake_stdout.getvalue())
self.assertTrue(os.path.exists(builder_path))
def test_good(self):
scenario = {
'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100],
['add', 'z2-3.4.5.6:7/sda9', 200]],
[['set_weight', 0, 150]],
[['remove', 1]]]}
parsed = parse_scenario(json.dumps(scenario))
self.assertEqual(parsed['replicas'], 3)
self.assertEqual(parsed['part_power'], 8)
self.assertEqual(parsed['random_seed'], 123)
self.assertEqual(parsed['overload'], 0)
self.assertEqual(parsed['rounds'], [
[['add', {'device': 'sda8',
'ip': '3.4.5.6',
'meta': '',
'port': 7,
'region': 1,
'replication_ip': '3.4.5.6',
'replication_port': 7,
'weight': 100.0,
'zone': 2}],
['add', {'device': u'sda9',
'ip': u'3.4.5.6',
'meta': '',
'port': 7,
'region': 1,
'replication_ip': '3.4.5.6',
'replication_port': 7,
'weight': 200.0,
'zone': 2}]],
[['set_weight', 0, 150.0]],
[['remove', 1]]])
def test_it_runs(self):
scenario = {
'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100],
['add', 'z2-3.4.5.6:7/sda9', 200]],
[['set_weight', 0, 150]],
[['remove', 1]]]}
parsed = parse_scenario(json.dumps(scenario))
fake_stdout = StringIO()
with mock.patch('sys.stdout', fake_stdout):
run_scenario(parsed)
# Just test that it produced some output as it ran; the fact that
# this doesn't crash and produces output that resembles something
# useful is good enough.
self.assertTrue('Rebalance' in fake_stdout.getvalue())