191 lines
6.9 KiB
Python
191 lines
6.9 KiB
Python
# Copyright 2017 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import time
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import zuul.zk
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import zuul.nodepool
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from zuul import model
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from tests.base import BaseTestCase, ChrootedKazooFixture, FakeNodepool
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class TestNodepool(BaseTestCase):
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# Tests the Nodepool interface class using a fake nodepool and
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# scheduler.
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def setUp(self):
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super(TestNodepool, self).setUp()
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self.statsd = None
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self.zk_chroot_fixture = self.useFixture(
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ChrootedKazooFixture(self.id()))
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self.zk_config = '%s:%s%s' % (
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self.zk_chroot_fixture.zookeeper_host,
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self.zk_chroot_fixture.zookeeper_port,
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self.zk_chroot_fixture.zookeeper_chroot)
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self.zk = zuul.zk.ZooKeeper()
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self.addCleanup(self.zk.disconnect)
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self.zk.connect(self.zk_config)
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self.hostname = 'nodepool-test-hostname'
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self.provisioned_requests = []
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# This class implements the scheduler methods zuul.nodepool
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# needs, so we pass 'self' as the scheduler.
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self.nodepool = zuul.nodepool.Nodepool(self)
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self.fake_nodepool = FakeNodepool(
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self.zk_chroot_fixture.zookeeper_host,
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self.zk_chroot_fixture.zookeeper_port,
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self.zk_chroot_fixture.zookeeper_chroot)
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self.addCleanup(self.fake_nodepool.stop)
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def waitForRequests(self):
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# Wait until all requests are complete.
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while self.nodepool.requests:
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time.sleep(0.1)
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def onNodesProvisioned(self, request):
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# This is a scheduler method that the nodepool class calls
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# back when a request is provisioned.
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self.provisioned_requests.append(request)
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def test_node_request(self):
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# Test a simple node request
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nodeset = model.NodeSet()
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nodeset.addNode(model.Node(['controller', 'foo'], 'ubuntu-xenial'))
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nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
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job = model.Job('testjob')
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job.nodeset = nodeset
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request = self.nodepool.requestNodes(None, job, 0)
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self.waitForRequests()
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self.assertEqual(len(self.provisioned_requests), 1)
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self.assertEqual(request.state, 'fulfilled')
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# Accept the nodes
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self.nodepool.acceptNodes(request, request.id)
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nodeset = request.nodeset
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for node in nodeset.getNodes():
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self.assertIsNotNone(node.lock)
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self.assertEqual(node.state, 'ready')
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# Mark the nodes in use
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self.nodepool.useNodeSet(nodeset)
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for node in nodeset.getNodes():
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self.assertEqual(node.state, 'in-use')
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# Return the nodes
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self.nodepool.returnNodeSet(nodeset)
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for node in nodeset.getNodes():
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self.assertIsNone(node.lock)
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self.assertEqual(node.state, 'used')
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def test_node_request_disconnect(self):
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# Test that node requests are re-submitted after disconnect
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nodeset = model.NodeSet()
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nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
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nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
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job = model.Job('testjob')
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job.nodeset = nodeset
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self.fake_nodepool.pause()
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request = self.nodepool.requestNodes(None, job, 0)
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self.zk.client.stop()
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self.zk.client.start()
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self.fake_nodepool.unpause()
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self.waitForRequests()
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self.assertEqual(len(self.provisioned_requests), 1)
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self.assertEqual(request.state, 'fulfilled')
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def test_node_request_canceled(self):
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# Test that node requests can be canceled
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nodeset = model.NodeSet()
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nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
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nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
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job = model.Job('testjob')
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job.nodeset = nodeset
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self.fake_nodepool.pause()
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request = self.nodepool.requestNodes(None, job, 0)
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self.nodepool.cancelRequest(request)
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self.waitForRequests()
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self.assertEqual(len(self.provisioned_requests), 0)
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def test_accept_nodes_resubmitted(self):
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# Test that a resubmitted request would not lock nodes
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nodeset = model.NodeSet()
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nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
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nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
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job = model.Job('testjob')
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job.nodeset = nodeset
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request = self.nodepool.requestNodes(None, job, 0)
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self.waitForRequests()
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self.assertEqual(len(self.provisioned_requests), 1)
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self.assertEqual(request.state, 'fulfilled')
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# Accept the nodes, passing a different ID
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self.nodepool.acceptNodes(request, "invalid")
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nodeset = request.nodeset
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for node in nodeset.getNodes():
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self.assertIsNone(node.lock)
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self.assertEqual(node.state, 'ready')
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def test_accept_nodes_lost_request(self):
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# Test that a lost request would not lock nodes
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nodeset = model.NodeSet()
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nodeset.addNode(model.Node(['controller'], 'ubuntu-xenial'))
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nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
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job = model.Job('testjob')
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job.nodeset = nodeset
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request = self.nodepool.requestNodes(None, job, 0)
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self.waitForRequests()
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self.assertEqual(len(self.provisioned_requests), 1)
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self.assertEqual(request.state, 'fulfilled')
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self.zk.deleteNodeRequest(request)
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# Accept the nodes
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self.nodepool.acceptNodes(request, request.id)
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nodeset = request.nodeset
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for node in nodeset.getNodes():
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self.assertIsNone(node.lock)
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self.assertEqual(node.state, 'ready')
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def test_node_request_priority(self):
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# Test that requests are satisfied in priority order
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nodeset = model.NodeSet()
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nodeset.addNode(model.Node(['controller', 'foo'], 'ubuntu-xenial'))
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nodeset.addNode(model.Node(['compute'], 'ubuntu-xenial'))
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job = model.Job('testjob')
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job.nodeset = nodeset
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self.fake_nodepool.pause()
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request1 = self.nodepool.requestNodes(None, job, 1)
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request2 = self.nodepool.requestNodes(None, job, 0)
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self.fake_nodepool.unpause()
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self.waitForRequests()
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self.assertEqual(len(self.provisioned_requests), 2)
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self.assertEqual(request1.state, 'fulfilled')
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self.assertEqual(request2.state, 'fulfilled')
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self.assertTrue(request2.state_time < request1.state_time)
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