1352 lines
56 KiB
Python
1352 lines
56 KiB
Python
# Copyright (C) 2014 OpenStack Foundation
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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 logging
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import math
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import time
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import fixtures
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import mock
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from nodepool import tests
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from nodepool import zk
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from nodepool.driver import Drivers
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import nodepool.launcher
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from kazoo import exceptions as kze
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class TestLauncher(tests.DBTestCase):
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log = logging.getLogger("nodepool.TestLauncher")
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def test_node_assignment(self):
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'''
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Successful node launch should have unlocked nodes in READY state
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and assigned to the request.
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'''
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configfile = self.setup_config('node_no_min_ready.yaml')
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self.useBuilder(configfile)
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image = self.waitForImage('fake-provider', 'fake-image')
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self.assertEqual(image.username, 'zuul')
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nodepool.launcher.LOCK_CLEANUP = 1
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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req = zk.NodeRequest()
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req.state = zk.REQUESTED
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req.node_types.append('fake-label')
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self.zk.storeNodeRequest(req)
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req = self.waitForNodeRequest(req)
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self.assertEqual(req.state, zk.FULFILLED)
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self.assertNotEqual(req.nodes, [])
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for node_id in req.nodes:
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node = self.zk.getNode(node_id)
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self.assertEqual(node.allocated_to, req.id)
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self.assertEqual(node.state, zk.READY)
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self.assertIsNotNone(node.launcher)
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self.assertEqual(node.cloud, 'fake')
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self.assertEqual(node.region, 'fake-region')
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self.assertEqual(node.az, "az1")
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self.assertEqual(node.username, "zuul")
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self.assertEqual(node.connection_type, 'ssh')
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self.assertEqual(node.connection_port, 22)
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p = "{path}/{id}".format(
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path=self.zk._imageUploadPath(image.image_name,
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image.build_id,
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image.provider_name),
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id=image.id)
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self.assertEqual(node.image_id, p)
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self.zk.lockNode(node, blocking=False)
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self.zk.unlockNode(node)
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# Verify the cleanup thread removed the lock
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self.assertIsNotNone(
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self.zk.client.exists(self.zk._requestLockPath(req.id))
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)
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self.zk.deleteNodeRequest(req)
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self.waitForNodeRequestLockDeletion(req.id)
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self.assertReportedStat('nodepool.nodes.ready', '1|g')
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self.assertReportedStat('nodepool.nodes.building', '0|g')
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def test_node_assignment_order(self):
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"""Test that nodes are assigned in the order requested"""
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configfile = self.setup_config('node_many_labels.yaml')
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self.useBuilder(configfile)
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self.waitForImage('fake-provider', 'fake-image')
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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self.waitForNodes('fake-label1')
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self.waitForNodes('fake-label2')
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self.waitForNodes('fake-label3')
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self.waitForNodes('fake-label4')
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req = zk.NodeRequest()
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req.state = zk.REQUESTED
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req.node_types.append('fake-label3')
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req.node_types.append('fake-label1')
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req.node_types.append('fake-label4')
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req.node_types.append('fake-label2')
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self.zk.storeNodeRequest(req)
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req = self.waitForNodeRequest(req)
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self.assertEqual(req.state, zk.FULFILLED)
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self.assertEqual(4, len(req.nodes))
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nodes = []
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for node_id in req.nodes:
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nodes.append(self.zk.getNode(node_id))
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self.assertEqual(nodes[0].type, 'fake-label3')
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self.assertEqual(nodes[1].type, 'fake-label1')
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self.assertEqual(nodes[2].type, 'fake-label4')
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self.assertEqual(nodes[3].type, 'fake-label2')
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def _test_node_assignment_at_quota(self,
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config,
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max_cores=100,
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max_instances=20,
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max_ram=1000000):
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'''
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Successful node launch should have unlocked nodes in READY state
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and assigned to the request. This should be run with a quota that
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fits for two nodes.
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'''
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# patch the cloud with requested quota
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def fake_get_quota():
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return (max_cores, max_instances, max_ram)
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self.useFixture(fixtures.MockPatchObject(
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Drivers.get('fake')['provider'].fake_cloud, '_get_quota',
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fake_get_quota
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))
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configfile = self.setup_config(config)
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self.useBuilder(configfile)
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self.waitForImage('fake-provider', 'fake-image')
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nodepool.launcher.LOCK_CLEANUP = 1
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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self.wait_for_config(pool)
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client = pool.getProviderManager('fake-provider')._getClient()
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req1 = zk.NodeRequest()
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req1.state = zk.REQUESTED
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req1.node_types.append('fake-label')
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req1.node_types.append('fake-label')
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self.zk.storeNodeRequest(req1)
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self.log.debug("Waiting for 1st request %s", req1.id)
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req1 = self.waitForNodeRequest(req1, (zk.FULFILLED,))
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self.assertEqual(len(req1.nodes), 2)
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# Mark the first request's nodes as in use so they won't be deleted
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# when we pause. Locking them is enough.
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req1_node1 = self.zk.getNode(req1.nodes[0])
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req1_node2 = self.zk.getNode(req1.nodes[1])
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self.zk.lockNode(req1_node1, blocking=False)
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self.zk.lockNode(req1_node2, blocking=False)
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# One of the things we want to test is that if we spawn many
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# node launches at once, we do not deadlock while the request
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# handler pauses for quota. To ensure we test that case,
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# pause server creation until we have accepted all of the node
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# requests we submit. This will ensure that we hold locks on
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# all of the nodes before pausing so that we can validate they
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# are released.
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req2 = zk.NodeRequest()
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req2.state = zk.REQUESTED
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req2.node_types.append('fake-label')
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req2.node_types.append('fake-label')
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self.zk.storeNodeRequest(req2)
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req2 = self.waitForNodeRequest(req2, (zk.PENDING,))
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# At this point, we should have already created two servers for the
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# first request, and the request handler has accepted the second node
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# request but paused waiting for the server count to go below quota.
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# Wait until there is a paused request handler and check if there
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# are exactly two servers
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pool_worker = pool.getPoolWorkers('fake-provider')
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while not pool_worker[0].paused_handler:
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time.sleep(0.1)
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self.assertEqual(len(client._server_list), 2)
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# Mark the first request's nodes as USED, which will get them deleted
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# and allow the second to proceed.
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self.log.debug("Marking first node as used %s", req1.id)
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req1_node1.state = zk.USED
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self.zk.storeNode(req1_node1)
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self.zk.unlockNode(req1_node1)
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self.waitForNodeDeletion(req1_node1)
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# To force the sequential nature of what we're testing, wait for
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# the 2nd request to get a node allocated to it now that we've
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# freed up a node.
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self.log.debug("Waiting for node allocation for 2nd request")
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done = False
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while not done:
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for n in self.zk.nodeIterator():
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if n.allocated_to == req2.id:
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done = True
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break
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self.log.debug("Marking second node as used %s", req1.id)
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req1_node2.state = zk.USED
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self.zk.storeNode(req1_node2)
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self.zk.unlockNode(req1_node2)
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self.waitForNodeDeletion(req1_node2)
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self.log.debug("Deleting 1st request %s", req1.id)
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self.zk.deleteNodeRequest(req1)
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self.waitForNodeRequestLockDeletion(req1.id)
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req2 = self.waitForNodeRequest(req2, (zk.FULFILLED,))
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self.assertEqual(len(req2.nodes), 2)
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def test_node_assignment_at_pool_quota_cores(self):
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self._test_node_assignment_at_quota(
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config='node_quota_pool_cores.yaml')
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def test_node_assignment_at_pool_quota_instances(self):
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self._test_node_assignment_at_quota(
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config='node_quota_pool_instances.yaml')
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def test_node_assignment_at_pool_quota_ram(self):
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self._test_node_assignment_at_quota(
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config='node_quota_pool_ram.yaml')
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def test_node_assignment_at_cloud_cores_quota(self):
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self._test_node_assignment_at_quota(config='node_quota_cloud.yaml',
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max_cores=8,
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# check that -1 and inf work for no
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# quota
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max_instances=-1,
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max_ram=math.inf)
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def test_node_assignment_at_cloud_instances_quota(self):
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self._test_node_assignment_at_quota(config='node_quota_cloud.yaml',
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max_cores=math.inf,
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max_instances=2,
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max_ram=math.inf)
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def test_node_assignment_at_cloud_ram_quota(self):
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self._test_node_assignment_at_quota(config='node_quota_cloud.yaml',
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max_cores=math.inf,
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max_instances=math.inf,
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max_ram=2 * 8192)
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def test_over_quota(self, config='node_quota_cloud.yaml'):
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'''
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This tests what happens when a cloud unexpectedly returns an
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over-quota error.
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'''
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# Start with an instance quota of 2
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max_cores = math.inf
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max_instances = 2
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max_ram = math.inf
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# patch the cloud with requested quota
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def fake_get_quota():
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return (max_cores, max_instances, max_ram)
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self.useFixture(fixtures.MockPatchObject(
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Drivers.get('fake')['provider'].fake_cloud, '_get_quota',
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fake_get_quota
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))
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configfile = self.setup_config(config)
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self.useBuilder(configfile)
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self.waitForImage('fake-provider', 'fake-image')
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nodepool.launcher.LOCK_CLEANUP = 1
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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self.wait_for_config(pool)
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client = pool.getProviderManager('fake-provider')._getClient()
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# Wait for a single node to be created
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req1 = zk.NodeRequest()
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req1.state = zk.REQUESTED
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req1.node_types.append('fake-label')
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self.log.debug("Adding first request")
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self.zk.storeNodeRequest(req1)
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req1 = self.waitForNodeRequest(req1)
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self.assertEqual(req1.state, zk.FULFILLED)
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# Lock this node so it appears as used and not deleted
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req1_node = self.zk.getNode(req1.nodes[0])
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self.zk.lockNode(req1_node, blocking=False)
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# Now, reduce the quota so the next node unexpectedly
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# (according to nodepool's quota estimate) fails.
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client.max_instances = 1
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# Request a second node; this request should fail.
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req2 = zk.NodeRequest()
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req2.state = zk.REQUESTED
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req2.node_types.append('fake-label')
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self.log.debug("Adding second request")
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self.zk.storeNodeRequest(req2)
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req2 = self.waitForNodeRequest(req2)
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self.assertEqual(req2.state, zk.FAILED)
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# After the second request failed, the internal quota estimate
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# should be reset, so the next request should pause to wait
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# for more quota to become available.
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req3 = zk.NodeRequest()
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req3.state = zk.REQUESTED
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req3.node_types.append('fake-label')
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self.log.debug("Adding third request")
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self.zk.storeNodeRequest(req3)
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req3 = self.waitForNodeRequest(req3, (zk.PENDING,))
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self.assertEqual(req3.state, zk.PENDING)
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# Wait until there is a paused request handler and verify that
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# there is still only one server built (from the first
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# request).
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pool_worker = pool.getPoolWorkers('fake-provider')
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while not pool_worker[0].paused_handler:
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time.sleep(0.1)
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self.assertEqual(len(client._server_list), 1)
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def test_fail_request_on_launch_failure(self):
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'''
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Test that provider launch error fails the request.
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'''
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configfile = self.setup_config('node_launch_retry.yaml')
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self.useBuilder(configfile)
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self.waitForImage('fake-provider', 'fake-image')
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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self.wait_for_config(pool)
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manager = pool.getProviderManager('fake-provider')
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manager.createServer_fails = 2
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req = zk.NodeRequest()
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req.state = zk.REQUESTED
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req.node_types.append('fake-label')
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self.zk.storeNodeRequest(req)
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req = self.waitForNodeRequest(req)
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self.assertEqual(0, manager.createServer_fails)
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self.assertEqual(req.state, zk.FAILED)
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self.assertNotEqual(req.declined_by, [])
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def test_fail_minready_request_at_capacity(self):
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'''
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A min-ready request to a provider that is already at capacity should
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be declined.
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'''
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configfile = self.setup_config('node_min_ready_capacity.yaml')
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self.useBuilder(configfile)
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self.waitForImage('fake-provider', 'fake-image')
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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# Get an initial node ready
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req = zk.NodeRequest()
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req.state = zk.REQUESTED
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req.node_types.append("fake-label")
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self.zk.storeNodeRequest(req)
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req = self.waitForNodeRequest(req)
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self.assertEqual(req.state, zk.FULFILLED)
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# Now simulate a min-ready request
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min_ready_req = zk.NodeRequest()
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min_ready_req.state = zk.REQUESTED
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min_ready_req.node_types.append("fake-label")
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min_ready_req.requestor = "NodePool:min-ready"
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self.zk.storeNodeRequest(min_ready_req)
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min_ready_req = self.waitForNodeRequest(min_ready_req)
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self.assertEqual(min_ready_req.state, zk.FAILED)
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self.assertNotEqual(min_ready_req.declined_by, [])
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def test_invalid_image_fails(self):
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'''
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Test that an invalid image declines and fails the request.
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'''
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configfile = self.setup_config('node.yaml')
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pool = self.useNodepool(configfile, watermark_sleep=1)
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pool.start()
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req = zk.NodeRequest()
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req.state = zk.REQUESTED
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req.node_types.append("zorky-zumba")
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self.zk.storeNodeRequest(req)
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req = self.waitForNodeRequest(req)
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self.assertEqual(req.state, zk.FAILED)
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self.assertNotEqual(req.declined_by, [])
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def test_node(self):
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"""Test that an image and node are created"""
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configfile = self.setup_config('node.yaml')
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pool = self.useNodepool(configfile, watermark_sleep=1)
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self.useBuilder(configfile)
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pool.start()
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image = self.waitForImage('fake-provider', 'fake-image')
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self.assertEqual(image.username, 'zuul')
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nodes = self.waitForNodes('fake-label')
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self.assertEqual(len(nodes), 1)
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self.assertEqual(nodes[0].provider, 'fake-provider')
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self.assertEqual(nodes[0].type, 'fake-label')
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self.assertEqual(nodes[0].username, 'zuul')
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self.assertNotEqual(nodes[0].host_keys, [])
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def test_node_host_key_checking_false(self):
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"""Test that an image and node are created"""
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configfile = self.setup_config('node-host-key-checking.yaml')
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pool = self.useNodepool(configfile, watermark_sleep=1)
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self.useBuilder(configfile)
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pool.start()
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image = self.waitForImage('fake-provider', 'fake-image')
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self.assertEqual(image.username, 'zuul')
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nodes = self.waitForNodes('fake-label')
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self.assertEqual(len(nodes), 1)
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self.assertEqual(nodes[0].provider, 'fake-provider')
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self.assertEqual(nodes[0].type, 'fake-label')
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self.assertEqual(nodes[0].username, 'zuul')
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# We have no host_keys because host-key-checking is False.
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self.assertEqual(nodes[0].host_keys, [])
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def test_multiple_launcher(self):
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"""Test that an image and node are created with 2 launchers"""
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# nodepool-builder needs access to both providers to upload images
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configfile = self.setup_config('node_two_provider.yaml')
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self.useBuilder(configfile)
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# Start up first launcher
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configfile1 = self.setup_config('node.yaml')
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pool1 = self.useNodepool(configfile1, watermark_sleep=1)
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pool1.start()
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# Start up second launcher
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configfile2 = self.setup_config('node_second_provider.yaml')
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pool2 = self.useNodepool(configfile2, watermark_sleep=1)
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pool2.start()
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# Validate we have images in both providers
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image1 = self.waitForImage('fake-provider', 'fake-image')
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self.assertEqual(image1.username, 'zuul')
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image2 = self.waitForImage('fake-provider2', 'fake-image')
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self.assertEqual(image2.username, 'zuul')
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# We don't need to check which provider launched the min-ready, just
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# that one was launched.
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nodes = self.waitForNodes('fake-label', 1)
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self.assertEqual(len(nodes), 1)
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self.assertEqual(nodes[0].type, 'fake-label')
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self.assertEqual(nodes[0].username, 'zuul')
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self.assertNotEqual(nodes[0].host_keys, [])
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def test_node_boot_from_volume(self):
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"""Test that an image and node are created from a volume"""
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configfile = self.setup_config('node_boot_from_volume.yaml')
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pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
self.assertEqual(nodes[0].type, 'fake-label')
|
|
|
|
def test_disabled_label(self):
|
|
"""Test that a node is not created with min-ready=0"""
|
|
configfile = self.setup_config('node_disabled_label.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.assertEqual([], self.zk.getNodeRequests())
|
|
self.assertEqual([], self.zk.getNodes())
|
|
|
|
def test_node_net_name(self):
|
|
"""Test that a node is created with a net name"""
|
|
configfile = self.setup_config('node_net_name.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
self.assertEqual(nodes[0].type, 'fake-label')
|
|
self.assertEqual(nodes[0].username, 'zuul')
|
|
|
|
def test_node_flavor_name(self):
|
|
"""Test that a node is created with a flavor name"""
|
|
configfile = self.setup_config('node_flavor_name.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
self.assertEqual(nodes[0].type, 'fake-label')
|
|
|
|
def test_node_vhd_image(self):
|
|
"""Test that a image and node are created vhd image"""
|
|
configfile = self.setup_config('node_vhd.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
self.assertEqual(nodes[0].type, 'fake-label')
|
|
|
|
def test_node_vhd_and_qcow2(self):
|
|
"""Test label provided by vhd and qcow2 images builds"""
|
|
configfile = self.setup_config('node_vhd_and_qcow2.yaml')
|
|
self.useBuilder(configfile)
|
|
p1_image = self.waitForImage('fake-provider1', 'fake-image')
|
|
p2_image = self.waitForImage('fake-provider2', 'fake-image')
|
|
|
|
# We can't guarantee which provider would build the requested
|
|
# nodes, but that doesn't matter so much as guaranteeing that the
|
|
# correct image type is uploaded to the correct provider.
|
|
self.assertEqual(p1_image.format, "vhd")
|
|
self.assertEqual(p2_image.format, "qcow2")
|
|
|
|
def test_dib_upload_fail(self):
|
|
"""Test that an image upload failure is contained."""
|
|
configfile = self.setup_config('node_upload_fail.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider2', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label', 2)
|
|
self.assertEqual(len(nodes), 2)
|
|
total_nodes = sum(1 for _ in self.zk.nodeIterator())
|
|
self.assertEqual(total_nodes, 2)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider2')
|
|
self.assertEqual(nodes[0].type, 'fake-label')
|
|
self.assertEqual(nodes[0].username, 'zuul')
|
|
self.assertEqual(nodes[1].provider, 'fake-provider2')
|
|
self.assertEqual(nodes[1].type, 'fake-label')
|
|
self.assertEqual(nodes[1].username, 'zuul')
|
|
|
|
def test_node_az(self):
|
|
"""Test that an image and node are created with az specified"""
|
|
configfile = self.setup_config('node_az.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
self.assertEqual(nodes[0].az, 'az1')
|
|
|
|
def test_node_ipv6(self):
|
|
"""Test that ipv6 existence either way works fine."""
|
|
configfile = self.setup_config('node_ipv6.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider1', 'fake-image')
|
|
self.waitForImage('fake-provider2', 'fake-image')
|
|
label1_nodes = self.waitForNodes('fake-label1')
|
|
label2_nodes = self.waitForNodes('fake-label2')
|
|
|
|
self.assertEqual(len(label1_nodes), 1)
|
|
self.assertEqual(len(label2_nodes), 1)
|
|
|
|
# ipv6 address available
|
|
self.assertEqual(label1_nodes[0].provider, 'fake-provider1')
|
|
self.assertEqual(label1_nodes[0].public_ipv4, 'fake')
|
|
self.assertEqual(label1_nodes[0].public_ipv6, 'fake_v6')
|
|
self.assertEqual(label1_nodes[0].interface_ip, 'fake_v6')
|
|
|
|
# ipv6 address unavailable
|
|
self.assertEqual(label2_nodes[0].provider, 'fake-provider2')
|
|
self.assertEqual(label2_nodes[0].public_ipv4, 'fake')
|
|
self.assertEqual(label2_nodes[0].public_ipv6, '')
|
|
self.assertEqual(label2_nodes[0].interface_ip, 'fake')
|
|
|
|
def test_node_delete_success(self):
|
|
configfile = self.setup_config('node.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(zk.READY, nodes[0].state)
|
|
self.assertEqual('fake-provider', nodes[0].provider)
|
|
nodes[0].state = zk.DELETING
|
|
self.zk.storeNode(nodes[0])
|
|
|
|
# Wait for this one to be deleted
|
|
self.waitForNodeDeletion(nodes[0])
|
|
|
|
# Wait for a new one to take it's place
|
|
new_nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(new_nodes), 1)
|
|
self.assertEqual(zk.READY, new_nodes[0].state)
|
|
self.assertEqual('fake-provider', new_nodes[0].provider)
|
|
self.assertNotEqual(nodes[0], new_nodes[0])
|
|
|
|
def test_node_launch_retries(self):
|
|
configfile = self.setup_config('node_launch_retry.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.wait_for_config(pool)
|
|
manager = pool.getProviderManager('fake-provider')
|
|
manager.createServer_fails = 2
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req)
|
|
|
|
req = self.waitForNodeRequest(req)
|
|
self.assertEqual(req.state, zk.FAILED)
|
|
|
|
# retries in config is set to 2, so 2 attempts to create a server
|
|
self.assertEqual(0, manager.createServer_fails)
|
|
|
|
def test_node_delete_failure(self):
|
|
def fail_delete(self, name):
|
|
raise RuntimeError('Fake Error')
|
|
|
|
self.useFixture(fixtures.MockPatchObject(
|
|
Drivers.get('fake')['provider'], 'deleteServer', fail_delete))
|
|
|
|
configfile = self.setup_config('node.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
|
|
self.zk.lockNode(nodes[0], blocking=False)
|
|
nodepool.launcher.NodeDeleter.delete(
|
|
self.zk, pool.getProviderManager('fake-provider'), nodes[0])
|
|
|
|
# Make sure our old node is in delete state, even though delete failed
|
|
deleted_node = self.zk.getNode(nodes[0].id)
|
|
self.assertIsNotNone(deleted_node)
|
|
self.assertEqual(deleted_node.state, zk.DELETING)
|
|
|
|
# Make sure we have a new, READY node
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
|
|
def test_leaked_node(self):
|
|
"""Test that a leaked node is deleted"""
|
|
configfile = self.setup_config('leaked_node.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.log.debug("Waiting for initial pool...")
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.log.debug("...done waiting for initial pool.")
|
|
|
|
# Make sure we have a node built and ready
|
|
self.assertEqual(len(nodes), 1)
|
|
manager = pool.getProviderManager('fake-provider')
|
|
servers = manager.listNodes()
|
|
self.assertEqual(len(servers), 1)
|
|
|
|
# Delete the node from ZooKeeper, but leave the instance
|
|
# so it is leaked.
|
|
self.log.debug("Delete node db record so instance is leaked...")
|
|
self.zk.deleteNode(nodes[0])
|
|
self.log.debug("...deleted node db so instance is leaked.")
|
|
|
|
# Wait for nodepool to replace it
|
|
self.log.debug("Waiting for replacement pool...")
|
|
new_nodes = self.waitForNodes('fake-label')
|
|
self.log.debug("...done waiting for replacement pool.")
|
|
self.assertEqual(len(new_nodes), 1)
|
|
|
|
# Wait for the instance to be cleaned up
|
|
self.waitForInstanceDeletion(manager, nodes[0].external_id)
|
|
|
|
# Make sure we end up with only one server (the replacement)
|
|
servers = manager.listNodes()
|
|
self.assertEqual(len(servers), 1)
|
|
|
|
def test_max_ready_age(self):
|
|
"""Test a node with exceeded max-ready-age is deleted"""
|
|
configfile = self.setup_config('node_max_ready_age.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.log.debug("Waiting for initial pool...")
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.log.debug("...done waiting for initial pool.")
|
|
|
|
# Wait for the instance to be cleaned up
|
|
manager = pool.getProviderManager('fake-provider')
|
|
self.waitForInstanceDeletion(manager, nodes[0].external_id)
|
|
|
|
def test_max_hold_age(self):
|
|
"""Test a held node with exceeded max-hold-age is deleted"""
|
|
configfile = self.setup_config('node_max_hold_age.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.log.debug("Waiting for initial pool...")
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.log.debug("...done waiting for initial pool.")
|
|
node = nodes[0]
|
|
self.log.debug("Holding node %s..." % node.id)
|
|
# hold the node
|
|
node.state = zk.HOLD
|
|
node.comment = 'testing'
|
|
self.zk.lockNode(node, blocking=False)
|
|
self.zk.storeNode(node)
|
|
self.zk.unlockNode(node)
|
|
znode = self.zk.getNode(node.id)
|
|
self.log.debug("Node %s in state '%s'" % (znode.id, znode.state))
|
|
# Wait for the instance to be cleaned up
|
|
manager = pool.getProviderManager('fake-provider')
|
|
self.waitForInstanceDeletion(manager, node.external_id)
|
|
|
|
def test_hold_expiration_no_default(self):
|
|
"""Test a held node is deleted when past its operator-specified TTL,
|
|
no max-hold-age set"""
|
|
configfile = self.setup_config('node_max_ready_age.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.log.debug("Waiting for initial pool...")
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.log.debug("...done waiting for initial pool.")
|
|
node = nodes[0]
|
|
self.log.debug("Holding node %s..." % node.id)
|
|
# hold the node
|
|
node.state = zk.HOLD
|
|
node.comment = 'testing'
|
|
node.hold_expiration = 5
|
|
self.zk.lockNode(node, blocking=False)
|
|
self.zk.storeNode(node)
|
|
self.zk.unlockNode(node)
|
|
znode = self.zk.getNode(node.id)
|
|
self.log.debug("Node %s in state '%s'" % (znode.id, znode.state))
|
|
# Wait for the instance to be cleaned up
|
|
manager = pool.getProviderManager('fake-provider')
|
|
self.waitForInstanceDeletion(manager, node.external_id)
|
|
|
|
def test_hold_expiration_lower_than_default(self):
|
|
"""Test a held node is deleted when past its operator-specified TTL,
|
|
with max-hold-age set in the configuration"""
|
|
configfile = self.setup_config('node_max_hold_age_2.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.log.debug("Waiting for initial pool...")
|
|
nodes = self.waitForNodes('fake-label', 2)
|
|
self.log.debug("...done waiting for initial pool.")
|
|
node_custom = nodes[0]
|
|
# TODO make it a fraction of fixture's max-hold-age
|
|
hold_expiration = 2
|
|
node = nodes[1]
|
|
self.log.debug("Holding node %s... (default)" % node.id)
|
|
self.log.debug("Holding node %s...(%s seconds)" % (node_custom.id,
|
|
hold_expiration))
|
|
# hold the nodes
|
|
node.state = zk.HOLD
|
|
node.comment = 'testing'
|
|
node_custom.state = zk.HOLD
|
|
node_custom.comment = 'testing hold_expiration'
|
|
node_custom.hold_expiration = hold_expiration
|
|
self.zk.lockNode(node, blocking=False)
|
|
self.zk.storeNode(node)
|
|
self.zk.unlockNode(node)
|
|
self.zk.lockNode(node_custom, blocking=False)
|
|
self.zk.storeNode(node_custom)
|
|
self.zk.unlockNode(node_custom)
|
|
znode = self.zk.getNode(node.id)
|
|
self.log.debug("Node %s in state '%s'" % (znode.id, znode.state))
|
|
znode_custom = self.zk.getNode(node_custom.id)
|
|
self.log.debug("Node %s in state '%s'" % (znode_custom.id,
|
|
znode_custom.state))
|
|
# Wait for the instance to be cleaned up
|
|
manager = pool.getProviderManager('fake-provider')
|
|
self.waitForInstanceDeletion(manager, node_custom.external_id)
|
|
# control node should still be held
|
|
held_nodes = [n for n in self.zk.nodeIterator() if n.state == zk.HOLD]
|
|
self.assertTrue(any(n.id == node.id for n in held_nodes),
|
|
held_nodes)
|
|
# finally, control node gets deleted
|
|
self.waitForInstanceDeletion(manager, node.external_id)
|
|
|
|
def test_hold_expiration_higher_than_default(self):
|
|
"""Test a held node is deleted after max-hold-age seconds if the
|
|
operator specifies a larger TTL"""
|
|
configfile = self.setup_config('node_max_hold_age_2.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.log.debug("Waiting for initial pool...")
|
|
nodes = self.waitForNodes('fake-label', 2)
|
|
self.log.debug("...done waiting for initial pool.")
|
|
node_custom = nodes[0]
|
|
# TODO make it a multiple of fixture's max-hold-age
|
|
hold_expiration = 20
|
|
node = nodes[1]
|
|
self.log.debug("Holding node %s... (default)" % node.id)
|
|
self.log.debug("Holding node %s...(%s seconds)" % (node_custom.id,
|
|
hold_expiration))
|
|
# hold the nodes
|
|
node.state = zk.HOLD
|
|
node.comment = 'testing'
|
|
node_custom.state = zk.HOLD
|
|
node_custom.comment = 'testing hold_expiration'
|
|
node_custom.hold_expiration = hold_expiration
|
|
self.zk.lockNode(node, blocking=False)
|
|
self.zk.storeNode(node)
|
|
self.zk.unlockNode(node)
|
|
self.zk.lockNode(node_custom, blocking=False)
|
|
self.zk.storeNode(node_custom)
|
|
self.zk.unlockNode(node_custom)
|
|
znode = self.zk.getNode(node.id)
|
|
self.log.debug("Node %s in state '%s'" % (znode.id, znode.state))
|
|
znode_custom = self.zk.getNode(node_custom.id)
|
|
self.log.debug("Node %s in state '%s'" % (znode_custom.id,
|
|
znode_custom.state))
|
|
# Wait for the instance to be cleaned up
|
|
manager = pool.getProviderManager('fake-provider')
|
|
self.waitForInstanceDeletion(manager, node.external_id)
|
|
# custom node should be deleted as well
|
|
held_nodes = [n for n in self.zk.nodeIterator() if n.state == zk.HOLD]
|
|
self.assertEqual(0, len(held_nodes), held_nodes)
|
|
|
|
def test_label_provider(self):
|
|
"""Test that only providers listed in the label satisfy the request"""
|
|
configfile = self.setup_config('node_label_provider.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.waitForImage('fake-provider2', 'fake-image')
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider2')
|
|
|
|
def _create_pending_request(self):
|
|
req = zk.NodeRequest()
|
|
req.state = zk.PENDING
|
|
req.requestor = 'test_nodepool'
|
|
req.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req)
|
|
|
|
# Create a node that is allocated to the request, but not yet assigned
|
|
# within the NodeRequest object
|
|
node = zk.Node()
|
|
node.state = zk.READY
|
|
node.type = 'fake-label'
|
|
node.public_ipv4 = 'fake'
|
|
node.provider = 'fake-provider'
|
|
node.pool = 'main'
|
|
node.allocated_to = req.id
|
|
self.zk.storeNode(node)
|
|
|
|
return (req, node)
|
|
|
|
def test_lost_requests(self):
|
|
"""Test a request left pending is reset and satisfied on restart"""
|
|
(req, node) = self._create_pending_request()
|
|
|
|
configfile = self.setup_config('node_lost_requests.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
pool.start()
|
|
req = self.waitForNodeRequest(req, (zk.FULFILLED,))
|
|
# Since our config file has min-ready=0, we should be able to re-use
|
|
# the previously assigned node, thus making sure that the cleanup
|
|
# code reset the 'allocated_to' field.
|
|
self.assertIn(node.id, req.nodes)
|
|
|
|
def test_node_deallocation(self):
|
|
"""Test an allocated node with a missing request is deallocated"""
|
|
node = zk.Node()
|
|
node.state = zk.READY
|
|
node.type = 'fake-label'
|
|
node.public_ipv4 = 'fake'
|
|
node.provider = 'fake-provider'
|
|
node.allocated_to = "MISSING"
|
|
self.zk.storeNode(node)
|
|
|
|
configfile = self.setup_config('node_lost_requests.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
|
|
while True:
|
|
node = self.zk.getNode(node.id)
|
|
if not node.allocated_to:
|
|
break
|
|
|
|
def test_multiple_pools(self):
|
|
"""Test that an image and node are created"""
|
|
configfile = self.setup_config('multiple_pools.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
lab1 = self.waitForNodes('fake-label1')
|
|
lab2 = self.waitForNodes('fake-label2')
|
|
|
|
self.assertEqual(len(lab1), 1)
|
|
self.assertEqual(lab1[0].provider, 'fake-provider')
|
|
self.assertEqual(lab1[0].type, 'fake-label1')
|
|
self.assertEqual(lab1[0].az, 'az1')
|
|
self.assertEqual(lab1[0].pool, 'pool1')
|
|
|
|
self.assertEqual(len(lab2), 1)
|
|
self.assertEqual(lab2[0].provider, 'fake-provider')
|
|
self.assertEqual(lab2[0].type, 'fake-label2')
|
|
self.assertEqual(lab2[0].az, 'az2')
|
|
self.assertEqual(lab2[0].pool, 'pool2')
|
|
|
|
def test_unmanaged_image(self):
|
|
"""Test node launching using an unmanaged image"""
|
|
configfile = self.setup_config('node_unmanaged_image.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
|
|
pool.start()
|
|
self.wait_for_config(pool)
|
|
manager = pool.getProviderManager('fake-provider')
|
|
manager._client.create_image(name="fake-image")
|
|
manager._client.create_image(name="fake-image-windows")
|
|
manager._client.create_image(name="fake-image-windows-port")
|
|
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertIsNone(nodes[0].username)
|
|
|
|
nodes = self.waitForNodes('fake-label-windows')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual('zuul', nodes[0].username)
|
|
self.assertEqual('winrm', nodes[0].connection_type)
|
|
self.assertEqual(5986, nodes[0].connection_port)
|
|
self.assertEqual(nodes[0].host_keys, [])
|
|
|
|
nodes = self.waitForNodes('fake-label-arbitrary-port')
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual('zuul', nodes[0].username)
|
|
self.assertEqual('winrm', nodes[0].connection_type)
|
|
self.assertEqual(1234, nodes[0].connection_port)
|
|
self.assertEqual(nodes[0].host_keys, [])
|
|
|
|
def test_unmanaged_image_provider_name(self):
|
|
"""
|
|
Test node launching using an unmanaged image referencing the
|
|
image name as known by the provider.
|
|
"""
|
|
configfile = self.setup_config('unmanaged_image_provider_name.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
|
|
pool.start()
|
|
self.wait_for_config(pool)
|
|
manager = pool.getProviderManager('fake-provider')
|
|
manager._client.create_image(name="provider-named-image")
|
|
|
|
nodes = self.waitForNodes('fake-label')
|
|
self.assertEqual(len(nodes), 1)
|
|
|
|
def test_paused_gets_declined(self):
|
|
"""Test that a paused request, that later gets declined, unpauses."""
|
|
|
|
# First config has max-servers set to 2
|
|
configfile = self.setup_config('pause_declined_1.yaml')
|
|
self.useBuilder(configfile)
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
pool.start()
|
|
|
|
# Create a request that uses all capacity (2 servers)
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label')
|
|
req.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req)
|
|
req = self.waitForNodeRequest(req)
|
|
self.assertEqual(req.state, zk.FULFILLED)
|
|
self.assertEqual(len(req.nodes), 2)
|
|
|
|
# Now that we have 2 nodes in use, create another request that
|
|
# requests two nodes, which should cause the request to pause.
|
|
req2 = zk.NodeRequest()
|
|
req2.state = zk.REQUESTED
|
|
req2.node_types.append('fake-label')
|
|
req2.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req2)
|
|
req2 = self.waitForNodeRequest(req2, (zk.PENDING,))
|
|
|
|
# Second config decreases max-servers to 1
|
|
self.replace_config(configfile, 'pause_declined_2.yaml')
|
|
|
|
# Because the second request asked for 2 nodes, but that now exceeds
|
|
# max-servers, req2 should get declined now, and transition to FAILED
|
|
req2 = self.waitForNodeRequest(req2, (zk.FAILED,))
|
|
self.assertNotEqual(req2.declined_by, [])
|
|
|
|
def test_node_auto_floating_ip(self):
|
|
"""Test that auto-floating-ip option works fine."""
|
|
configfile = self.setup_config('node_auto_floating_ip.yaml')
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
self.useBuilder(configfile)
|
|
pool.start()
|
|
self.waitForImage('fake-provider1', 'fake-image')
|
|
self.waitForImage('fake-provider2', 'fake-image')
|
|
self.waitForImage('fake-provider3', 'fake-image')
|
|
label1_nodes = self.waitForNodes('fake-label1')
|
|
label2_nodes = self.waitForNodes('fake-label2')
|
|
label3_nodes = self.waitForNodes('fake-label3')
|
|
|
|
self.assertEqual(1, len(label1_nodes))
|
|
self.assertEqual(1, len(label2_nodes))
|
|
self.assertEqual(1, len(label3_nodes))
|
|
|
|
# auto-floating-ip: False
|
|
self.assertEqual('fake-provider1', label1_nodes[0].provider)
|
|
self.assertEqual('', label1_nodes[0].public_ipv4)
|
|
self.assertEqual('', label1_nodes[0].public_ipv6)
|
|
self.assertEqual('fake', label1_nodes[0].interface_ip)
|
|
|
|
# auto-floating-ip: True
|
|
self.assertEqual('fake-provider2', label2_nodes[0].provider)
|
|
self.assertEqual('fake', label2_nodes[0].public_ipv4)
|
|
self.assertEqual('', label2_nodes[0].public_ipv6)
|
|
self.assertEqual('fake', label2_nodes[0].interface_ip)
|
|
|
|
# auto-floating-ip: default value
|
|
self.assertEqual('fake-provider3', label3_nodes[0].provider)
|
|
self.assertEqual('fake', label3_nodes[0].public_ipv4)
|
|
self.assertEqual('', label3_nodes[0].public_ipv6)
|
|
self.assertEqual('fake', label3_nodes[0].interface_ip)
|
|
|
|
def test_secure_file(self):
|
|
"""Test using secure.conf file"""
|
|
configfile = self.setup_config('secure_file_config.yaml')
|
|
securefile = self.setup_secure('secure_file_secure.yaml')
|
|
pool = self.useNodepool(
|
|
configfile,
|
|
secure_conf=securefile,
|
|
watermark_sleep=1)
|
|
self.useBuilder(configfile, securefile=securefile)
|
|
pool.start()
|
|
self.wait_for_config(pool)
|
|
|
|
zk_servers = pool.config.zookeeper_servers
|
|
self.assertEqual(1, len(zk_servers))
|
|
key = list(zk_servers.keys())[0]
|
|
self.assertEqual(self.zookeeper_host, zk_servers[key].host)
|
|
self.assertEqual(self.zookeeper_port, zk_servers[key].port)
|
|
self.assertEqual(self.zookeeper_chroot, zk_servers[key].chroot)
|
|
|
|
image = self.waitForImage('fake-provider', 'fake-image')
|
|
self.assertEqual(image.username, 'zuul')
|
|
nodes = self.waitForNodes('fake-label')
|
|
|
|
self.assertEqual(len(nodes), 1)
|
|
self.assertEqual(nodes[0].provider, 'fake-provider')
|
|
self.assertEqual(nodes[0].type, 'fake-label')
|
|
self.assertEqual(nodes[0].username, 'zuul')
|
|
self.assertNotEqual(nodes[0].host_keys, [])
|
|
|
|
def test_provider_removal(self):
|
|
"""Test that removing a provider stops the worker thread"""
|
|
configfile = self.setup_config('launcher_two_provider.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=.5)
|
|
pool.start()
|
|
self.waitForNodes('fake-label')
|
|
self.assertEqual(2, len(pool._pool_threads))
|
|
|
|
self.replace_config(configfile, 'launcher_two_provider_remove.yaml')
|
|
# wait longer than our watermark_sleep time for the config to change
|
|
time.sleep(1)
|
|
self.assertEqual(1, len(pool._pool_threads))
|
|
|
|
def test_failed_provider(self):
|
|
"""Test that broken provider doesn't fail node requests."""
|
|
configfile = self.setup_config('launcher_two_provider_max_1.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=.5)
|
|
pool.start()
|
|
self.wait_for_config(pool)
|
|
|
|
# Steady state at images available.
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
self.waitForImage('fake-provider2', 'fake-image')
|
|
# We have now reached steady state and can manipulate the system to
|
|
# test failing cloud behavior.
|
|
|
|
# Make two requests so that the next requests are paused.
|
|
# Note we use different provider specific labels here to avoid
|
|
# a race where a single provider fulfills both of these initial
|
|
# requests.
|
|
|
|
# fake-provider
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label2')
|
|
self.zk.storeNodeRequest(req)
|
|
req = self.waitForNodeRequest(req, zk.FULFILLED)
|
|
|
|
# fake-provider2
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label3')
|
|
self.zk.storeNodeRequest(req)
|
|
req = self.waitForNodeRequest(req, zk.FULFILLED)
|
|
|
|
nodes = map(pool.zk.getNode, pool.zk.getNodes())
|
|
provider1_first = None
|
|
provider2_first = None
|
|
for node in nodes:
|
|
if node.provider == 'fake-provider2':
|
|
provider2_first = node
|
|
elif node.provider == 'fake-provider':
|
|
provider1_first = node
|
|
|
|
# Mark the nodes as being used so they won't be deleted at pause.
|
|
# Locking them is enough.
|
|
self.zk.lockNode(provider1_first, blocking=False)
|
|
self.zk.lockNode(provider2_first, blocking=False)
|
|
|
|
# Next two requests will go pending one for each provider.
|
|
req1 = zk.NodeRequest()
|
|
req1.state = zk.REQUESTED
|
|
req1.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req1)
|
|
req1 = self.waitForNodeRequest(req1, zk.PENDING)
|
|
|
|
req2 = zk.NodeRequest()
|
|
req2.state = zk.REQUESTED
|
|
req2.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req2)
|
|
req2 = self.waitForNodeRequest(req2, zk.PENDING)
|
|
|
|
# Delete node attached to provider2 this will cause provider2 to
|
|
# fulfill the request it had pending.
|
|
provider2_first.state = zk.DELETING
|
|
self.zk.storeNode(provider2_first)
|
|
self.zk.unlockNode(provider2_first)
|
|
self.waitForNodeDeletion(provider2_first)
|
|
|
|
while True:
|
|
# Wait for provider2 node to be created. Also find the request
|
|
# that was not fulfilled. This is the request that fake-provider
|
|
# is pending on.
|
|
req = self.zk.getNodeRequest(req1.id)
|
|
if req.state == zk.FULFILLED:
|
|
final_req = req2
|
|
break
|
|
req = self.zk.getNodeRequest(req2.id)
|
|
if req.state == zk.FULFILLED:
|
|
final_req = req1
|
|
break
|
|
|
|
provider2_second = None
|
|
nodes = map(pool.zk.getNode, pool.zk.getNodes())
|
|
for node in nodes:
|
|
if (node and node.provider == 'fake-provider2' and
|
|
node.state == zk.READY):
|
|
provider2_second = node
|
|
break
|
|
|
|
# Now delete the new node we had provider2 build. At this point,
|
|
# the only provider with any requests is fake-provider.
|
|
provider2_second.state = zk.DELETING
|
|
self.zk.storeNode(provider2_second)
|
|
|
|
# Set provider1 runHandler to throw exception to simulate a
|
|
# broken cloud. Note the pool worker instantiates request handlers on
|
|
# demand which is why we have a somewhat convoluted monkey patch here.
|
|
# We must patch deep enough in the request handler that
|
|
# despite being paused fake-provider will still trip over this code.
|
|
pool_worker = pool.getPoolWorkers('fake-provider')[0]
|
|
request_handler = pool_worker.request_handlers[0]
|
|
|
|
def raise_KeyError(node):
|
|
raise KeyError('fake-provider')
|
|
|
|
request_handler.launch = raise_KeyError
|
|
|
|
# Delete instance in fake-provider. This should cause provider2
|
|
# to service the request that was held pending by fake-provider.
|
|
provider1_first.state = zk.DELETING
|
|
self.zk.storeNode(provider1_first)
|
|
self.zk.unlockNode(provider1_first)
|
|
|
|
# Request is fulfilled by provider 2
|
|
req = self.waitForNodeRequest(final_req)
|
|
self.assertEqual(req.state, zk.FULFILLED)
|
|
self.assertEqual(1, len(req.declined_by))
|
|
self.assertIn('fake-provider-main', req.declined_by[0])
|
|
|
|
def test_disabled_provider(self):
|
|
'''
|
|
A request should fail even with a provider that is disabled by
|
|
setting max-servers to 0. Because we look to see that all providers
|
|
decline a request by comparing the declined_by request attribute to
|
|
the list of registered launchers, this means that each must attempt
|
|
to handle it at least once, and thus decline it.
|
|
'''
|
|
configfile = self.setup_config('disabled_provider.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
pool.start()
|
|
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req)
|
|
|
|
req = self.waitForNodeRequest(req)
|
|
self.assertEqual(req.state, zk.FAILED)
|
|
|
|
def test_provider_wont_wedge(self):
|
|
'''
|
|
A provider should not wedge itself when it is at (1) maximum capacity
|
|
(# registered nodes == max-servers), (2) all of its current nodes are
|
|
not being used, and (3) a request comes in with a label that it does
|
|
not yet have available. Normally, situation (3) combined with (1)
|
|
would cause the provider to pause until capacity becomes available,
|
|
but because of (2), it never will and we would wedge the provider.
|
|
'''
|
|
configfile = self.setup_config('wedge_test.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
pool.start()
|
|
|
|
# Wait for fake-label1 min-ready request to be fulfilled, which will
|
|
# put us at maximum capacity with max-servers of 1.
|
|
label1_nodes = self.waitForNodes('fake-label1')
|
|
self.assertEqual(1, len(label1_nodes))
|
|
|
|
# Now we submit a request for fake-label2, which is not yet available.
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label2')
|
|
self.zk.storeNodeRequest(req)
|
|
|
|
# The provider should pause here to handle the fake-label2 request.
|
|
# But because the fake-label1 node is not being used, and will never
|
|
# be freed because we are paused and not handling additional requests,
|
|
# the pool worker thread should recognize that and delete the unused
|
|
# fake-label1 node for us. It can then fulfill the fake-label2 request.
|
|
self.waitForNodeDeletion(label1_nodes[0])
|
|
req = self.waitForNodeRequest(req)
|
|
self.assertEqual(req.state, zk.FULFILLED)
|
|
|
|
def test_launcher_registers_config_change(self):
|
|
'''
|
|
Launchers register themselves and some config info with ZooKeeper.
|
|
Validate that a config change will propogate to ZooKeeper.
|
|
'''
|
|
configfile = self.setup_config('launcher_reg1.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
pool.start()
|
|
|
|
self.waitForNodes('fake-label')
|
|
launchers = self.zk.getRegisteredLaunchers()
|
|
self.assertEqual(1, len(launchers))
|
|
|
|
# the fake-label-unused label should not appear
|
|
self.assertEqual({'fake-label'}, launchers[0].supported_labels)
|
|
|
|
self.replace_config(configfile, 'launcher_reg2.yaml')
|
|
|
|
# we should get 1 additional label now
|
|
while launchers[0].supported_labels != {'fake-label', 'fake-label2'}:
|
|
time.sleep(1)
|
|
launchers = self.zk.getRegisteredLaunchers()
|
|
|
|
@mock.patch('nodepool.driver.openstack.handler.'
|
|
'OpenStackNodeLauncher._launchNode')
|
|
def test_launchNode_session_expired(self, mock_launch):
|
|
'''
|
|
Test ZK session lost during _launchNode().
|
|
'''
|
|
mock_launch.side_effect = kze.SessionExpiredError()
|
|
|
|
# use a config with min-ready of 0
|
|
configfile = self.setup_config('node_launch_retry.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
pool.cleanup_interval = 60
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req)
|
|
|
|
# A session loss during node launch should at least try to set the
|
|
# request state to FAILED (in a non-test scenario, it may actually
|
|
# be missing).
|
|
req = self.waitForNodeRequest(req, states=(zk.FAILED,))
|
|
self.assertEqual(1, mock_launch.call_count)
|
|
|
|
# Any znodes created for the request should eventually get deleted.
|
|
while self.zk.countPoolNodes('fake-provider', 'main'):
|
|
time.sleep(0)
|
|
|
|
@mock.patch('nodepool.driver.NodeRequestHandler.poll')
|
|
def test_handler_poll_session_expired(self, mock_poll):
|
|
'''
|
|
Test ZK session lost during handler poll().
|
|
'''
|
|
mock_poll.side_effect = kze.SessionExpiredError()
|
|
|
|
# use a config with min-ready of 0
|
|
configfile = self.setup_config('node_launch_retry.yaml')
|
|
self.useBuilder(configfile)
|
|
pool = self.useNodepool(configfile, watermark_sleep=1)
|
|
pool.cleanup_interval = 60
|
|
pool.start()
|
|
self.waitForImage('fake-provider', 'fake-image')
|
|
|
|
req = zk.NodeRequest()
|
|
req.state = zk.REQUESTED
|
|
req.node_types.append('fake-label')
|
|
self.zk.storeNodeRequest(req)
|
|
|
|
# A session loss during handler poll should at least remove the
|
|
# request from active handlers
|
|
req = self.waitForNodeRequest(req, states=(zk.PENDING,))
|
|
self.assertEqual(1, mock_poll.call_count)
|
|
self.assertEqual(0, len(
|
|
pool._pool_threads["fake-provider-main"].request_handlers))
|