256 lines
9.8 KiB
Python
256 lines
9.8 KiB
Python
#! /usr/bin/env python
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# Copyright (c) 2015 Samuel Merritt <sam@swiftstack.com>
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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 os
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import json
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import mock
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from six import StringIO
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import unittest
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from test.unit import with_tempdir
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from swift.cli.ring_builder_analyzer import parse_scenario, run_scenario
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class TestRunScenario(unittest.TestCase):
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@with_tempdir
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def test_it_runs(self, tempdir):
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builder_path = os.path.join(tempdir, 'test.builder')
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scenario = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
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'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100],
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['add', 'z2-3.4.5.6:7/sda9', 200],
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['add', 'z2-3.4.5.6:7/sda10', 200],
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['add', 'z2-3.4.5.6:7/sda11', 200]],
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[['set_weight', 0, 150]],
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[['remove', 1]],
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[['save', builder_path]]]}
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parsed = parse_scenario(json.dumps(scenario))
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fake_stdout = StringIO()
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with mock.patch('sys.stdout', fake_stdout):
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run_scenario(parsed)
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# Just test that it produced some output as it ran; the fact that
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# this doesn't crash and produces output that resembles something
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# useful is good enough.
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self.assertIn('Rebalance', fake_stdout.getvalue())
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self.assertTrue(os.path.exists(builder_path))
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class TestParseScenario(unittest.TestCase):
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def test_good(self):
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scenario = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
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'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100],
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['add', 'z2-3.4.5.6:7/sda9', 200]],
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[['set_weight', 0, 150]],
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[['remove', 1]]]}
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parsed = parse_scenario(json.dumps(scenario))
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self.assertEqual(parsed['replicas'], 3)
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self.assertEqual(parsed['part_power'], 8)
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self.assertEqual(parsed['random_seed'], 123)
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self.assertEqual(parsed['overload'], 0)
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self.assertEqual(parsed['rounds'], [
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[['add', {'device': 'sda8',
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'ip': '3.4.5.6',
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'meta': '',
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'port': 7,
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'region': 1,
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'replication_ip': '3.4.5.6',
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'replication_port': 7,
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'weight': 100.0,
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'zone': 2}],
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['add', {'device': u'sda9',
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'ip': u'3.4.5.6',
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'meta': '',
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'port': 7,
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'region': 1,
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'replication_ip': '3.4.5.6',
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'replication_port': 7,
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'weight': 200.0,
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'zone': 2}]],
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[['set_weight', 0, 150.0]],
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[['remove', 1]]])
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# The rest of this test class is just a catalog of the myriad ways that
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# the input can be malformed.
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def test_invalid_json(self):
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self.assertRaises(ValueError, parse_scenario, "{")
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def test_json_not_object(self):
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self.assertRaises(ValueError, parse_scenario, "[]")
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self.assertRaises(ValueError, parse_scenario, "\"stuff\"")
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def test_bad_replicas(self):
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working_scenario = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
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'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100]]]}
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busted = dict(working_scenario)
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del busted['replicas']
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, replicas='blahblah')
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, replicas=-1)
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_part_power(self):
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working_scenario = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
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'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100]]]}
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busted = dict(working_scenario)
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del busted['part_power']
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, part_power='blahblah')
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, part_power=0)
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, part_power=33)
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_random_seed(self):
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working_scenario = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
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'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100]]]}
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busted = dict(working_scenario)
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del busted['random_seed']
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, random_seed='blahblah')
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_overload(self):
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working_scenario = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0,
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'rounds': [[['add', 'r1z2-3.4.5.6:7/sda8', 100]]]}
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busted = dict(working_scenario)
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del busted['overload']
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, overload='blahblah')
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(working_scenario, overload=-0.01)
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_rounds(self):
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base = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
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self.assertRaises(ValueError, parse_scenario, json.dumps(base))
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busted = dict(base, rounds={})
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(base, rounds=[{}])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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busted = dict(base, rounds=[[['bork']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_add(self):
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base = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
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# no dev
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busted = dict(base, rounds=[[['add']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# no weight
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busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6200/d7']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# too many fields
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busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6200/d7', 1, 2]]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# can't parse
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busted = dict(base, rounds=[[['add', 'not a good value', 100]]])
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# N.B. the ValueError's coming out of ring.utils.parse_add_value
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# are already pretty good
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expected = "Invalid device specifier (round 0, command 0): " \
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"Invalid add value: not a good value"
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try:
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parse_scenario(json.dumps(busted))
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except ValueError as err:
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self.assertEqual(str(err), expected)
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# negative weight
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busted = dict(base, rounds=[[['add', 'r1z2-1.2.3.4:6200/d7', -1]]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_remove(self):
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base = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
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# no dev
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busted = dict(base, rounds=[[['remove']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# bad dev id
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busted = dict(base, rounds=[[['remove', 'not an int']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# too many fields
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busted = dict(base, rounds=[[['remove', 1, 2]]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_set_weight(self):
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base = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
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# no dev
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busted = dict(base, rounds=[[['set_weight']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# no weight
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busted = dict(base, rounds=[[['set_weight', 0]]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# bad dev id
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busted = dict(base, rounds=[[['set_weight', 'not an int', 90]]])
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expected = "Invalid device ID in set_weight (round 0, command 0): " \
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"invalid literal for int() with base 10: 'not an int'"
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try:
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parse_scenario(json.dumps(busted))
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except ValueError as e:
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self.assertEqual(str(e), expected)
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# negative weight
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busted = dict(base, rounds=[[['set_weight', 1, -1]]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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# bogus weight
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busted = dict(base, rounds=[[['set_weight', 1, 'bogus']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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def test_bad_save(self):
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base = {
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'replicas': 3, 'part_power': 8, 'random_seed': 123, 'overload': 0}
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# no builder name
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busted = dict(base, rounds=[[['save']]])
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self.assertRaises(ValueError, parse_scenario, json.dumps(busted))
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