1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
# Copyright 2017 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import time
from zuul import model
import zuul.nodepool
from tests.base import BaseTestCase, ChrootedKazooFixture, FakeNodepool
from zuul.zk import ZooKeeperClient
from zuul.zk.nodepool import ZooKeeperNodepool
class TestNodepool(BaseTestCase):
# Tests the Nodepool interface class using a fake nodepool and
# scheduler.
def setUp(self):
super(TestNodepool, self).setUp()
self.statsd = None
self.zk_chroot_fixture = self.useFixture(
ChrootedKazooFixture(self.id()))
self.zk_config = '%s:%s%s' % (
self.zk_chroot_fixture.zookeeper_host,
self.zk_chroot_fixture.zookeeper_port,
self.zk_chroot_fixture.zookeeper_chroot)
self.zk_client = ZooKeeperClient(self.zk_config)
self.zk_nodepool = ZooKeeperNodepool(self.zk_client)
self.addCleanup(self.zk_client.disconnect)
self.zk_client.connect()
self.hostname = 'nodepool-test-hostname'
self.provisioned_requests = []
# This class implements the scheduler methods zuul.nodepool
# needs, so we pass 'self' as the scheduler.
self.nodepool = zuul.nodepool.Nodepool(self)
self.fake_nodepool = FakeNodepool(
self.zk_chroot_fixture.zookeeper_host,
self.zk_chroot_fixture.zookeeper_port,
self.zk_chroot_fixture.zookeeper_chroot)
self.addCleanup(self.fake_nodepool.stop)
def waitForRequests(self):
# Wait until all requests are complete.
while self.nodepool.requests:
time.sleep(0.1)
def onNodesProvisioned(self, request):
# This is a scheduler method that the nodepool class calls
# back when a request is provisioned.
self.provisioned_requests.append(request)
def test_node_request(self):
# Test a simple node request
nodeset = model.NodeSet()
nodeset.addNode(model.Node(['controller', 'foo'], 'ubuntu-xenial'))
nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
job = model.Job('testjob')
job.nodeset = nodeset
request = self.nodepool.requestNodes(None, job, 0)
self.waitForRequests()
self.assertEqual(len(self.provisioned_requests), 1)
self.assertEqual(request.state, 'fulfilled')
# Accept the nodes
self.nodepool.acceptNodes(request, request.id)
nodeset = request.nodeset
for node in nodeset.getNodes():
self.assertIsNotNone(node.lock)
self.assertEqual(node.state, 'ready')
# Mark the nodes in use
self.nodepool.useNodeSet(nodeset)
for node in nodeset.getNodes():
self.assertEqual(node.state, 'in-use')
# Return the nodes
self.nodepool.returnNodeSet(nodeset)
for node in nodeset.getNodes():
self.assertIsNone(node.lock)
self.assertEqual(node.state, 'used')
def test_node_request_disconnect(self):
# Test that node requests are re-submitted after disconnect
nodeset = model.NodeSet()
nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
job = model.Job('testjob')
job.nodeset = nodeset
self.fake_nodepool.pause()
request = self.nodepool.requestNodes(None, job, 0)
self.zk_client.client.stop()
self.zk_client.client.start()
self.fake_nodepool.unpause()
self.waitForRequests()
self.assertEqual(len(self.provisioned_requests), 1)
self.assertEqual(request.state, 'fulfilled')
def test_node_request_canceled(self):
# Test that node requests can be canceled
nodeset = model.NodeSet()
nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
job = model.Job('testjob')
job.nodeset = nodeset
self.fake_nodepool.pause()
request = self.nodepool.requestNodes(None, job, 0)
self.nodepool.cancelRequest(request)
self.waitForRequests()
self.assertEqual(len(self.provisioned_requests), 0)
def test_accept_nodes_resubmitted(self):
# Test that a resubmitted request would not lock nodes
nodeset = model.NodeSet()
nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
job = model.Job('testjob')
job.nodeset = nodeset
request = self.nodepool.requestNodes(None, job, 0)
self.waitForRequests()
self.assertEqual(len(self.provisioned_requests), 1)
self.assertEqual(request.state, 'fulfilled')
# Accept the nodes, passing a different ID
self.nodepool.acceptNodes(request, "invalid")
nodeset = request.nodeset
for node in nodeset.getNodes():
self.assertIsNone(node.lock)
self.assertEqual(node.state, 'ready')
def test_accept_nodes_lost_request(self):
# Test that a lost request would not lock nodes
nodeset = model.NodeSet()
nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
job = model.Job('testjob')
job.nodeset = nodeset
request = self.nodepool.requestNodes(None, job, 0)
self.waitForRequests()
self.assertEqual(len(self.provisioned_requests), 1)
self.assertEqual(request.state, 'fulfilled')
self.zk_nodepool.deleteNodeRequest(request)
# Accept the nodes
self.nodepool.acceptNodes(request, request.id)
nodeset = request.nodeset
for node in nodeset.getNodes():
self.assertIsNone(node.lock)
self.assertEqual(node.state, 'ready')
def test_node_request_priority(self):
# Test that requests are satisfied in priority order
nodeset = model.NodeSet()
nodeset.addNode(model.Node(['controller', 'foo'], 'ubuntu-xenial'))
nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
job = model.Job('testjob')
job.nodeset = nodeset
self.fake_nodepool.pause()
request1 = self.nodepool.requestNodes(None, job, 1)
request2 = self.nodepool.requestNodes(None, job, 0)
self.fake_nodepool.unpause()
self.waitForRequests()
self.assertEqual(len(self.provisioned_requests), 2)
self.assertEqual(request1.state, 'fulfilled')
self.assertEqual(request2.state, 'fulfilled')
self.assertTrue(request2.state_time < request1.state_time)
|
