236 lines
8.1 KiB
Python
236 lines
8.1 KiB
Python
import unittest
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import etcd
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import os.path
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import time
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import json
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from trollius import coroutine, get_event_loop, From, Future, sleep, Return
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from mock import Mock
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from threading import Event
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from urllib3.exceptions import ReadTimeoutError
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from buildman.manager.executor import BuilderExecutor
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from buildman.manager.ephemeral import (EphemeralBuilderManager, ETCD_BUILDER_PREFIX,
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ETCD_REALM_PREFIX, EtcdAction)
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from buildman.server import BuildJobResult
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from buildman.component.buildcomponent import BuildComponent
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BUILD_UUID = 'deadbeef-dead-beef-dead-deadbeefdead'
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REALM_ID = '1234-realm'
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def async_test(f):
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def wrapper(*args, **kwargs):
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coro = coroutine(f)
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future = coro(*args, **kwargs)
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loop = get_event_loop()
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loop.run_until_complete(future)
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return wrapper
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class TestEphemeral(unittest.TestCase):
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def __init__(self, *args, **kwargs):
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self.etcd_client_mock = None
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self.etcd_wait_event = Event()
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self.test_executor = None
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super(TestEphemeral, self).__init__(*args, **kwargs)
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def _create_mock_etcd_client(self, *args, **kwargs):
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def hang_until_event(*args, **kwargs):
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time.sleep(.01) # 10ms to simulate network latency
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self.etcd_wait_event.wait()
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self.etcd_client_mock = Mock(spec=etcd.Client, name='etcd.Client')
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self.etcd_client_mock.watch = Mock(side_effect=hang_until_event)
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return self.etcd_client_mock
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def _create_completed_future(self, result=None):
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def inner(*args, **kwargs):
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new_future = Future()
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new_future.set_result(result)
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return new_future
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return inner
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def _create_mock_executor(self, *args, **kwargs):
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self.test_executor = Mock(spec=BuilderExecutor)
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self.test_executor.start_builder = Mock(side_effect=self._create_completed_future('123'))
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self.test_executor.stop_builder = Mock(side_effect=self._create_completed_future())
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return self.test_executor
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def _create_build_job(self):
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mock_job = Mock()
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mock_job.job_details = {
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'build_uuid': BUILD_UUID,
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}
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mock_job.job_item = {
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'body': json.dumps(mock_job.job_details),
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'id': 1,
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}
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return mock_job
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def setUp(self):
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EphemeralBuilderManager._executors['test'] = self._create_mock_executor
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self.old_etcd_client_klass = EphemeralBuilderManager._etcd_client_klass
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EphemeralBuilderManager._etcd_client_klass = self._create_mock_etcd_client
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self.etcd_wait_event.clear()
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self.register_component_callback = Mock()
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self.unregister_component_callback = Mock()
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self.job_heartbeat_callback = Mock()
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self.job_complete_callback = Mock()
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self.manager = EphemeralBuilderManager(
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self.register_component_callback,
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self.unregister_component_callback,
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self.job_heartbeat_callback,
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self.job_complete_callback,
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'127.0.0.1',
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30,
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)
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self.manager.initialize({'EXECUTOR': 'test'})
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self.mock_job = self._create_build_job()
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self.mock_job_key = os.path.join(ETCD_BUILDER_PREFIX, BUILD_UUID)
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def tearDown(self):
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self.etcd_wait_event.set()
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self.manager.shutdown()
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del EphemeralBuilderManager._executors['test']
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EphemeralBuilderManager._etcd_client_klass = self.old_etcd_client_klass
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@coroutine
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def _setup_job_for_managers(self):
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# Test that we are watching the realm location before anything else happens
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self.etcd_client_mock.watch.assert_any_call(ETCD_REALM_PREFIX, recursive=True, timeout=0)
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self.etcd_client_mock.read = Mock(side_effect=KeyError)
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test_component = Mock(spec=BuildComponent)
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test_component.builder_realm = REALM_ID
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test_component.start_build = Mock(side_effect=self._create_completed_future())
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self.register_component_callback.return_value = test_component
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# Ask for a builder to be scheduled
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is_scheduled = yield From(self.manager.schedule(self.mock_job))
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self.assertTrue(is_scheduled)
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self.etcd_client_mock.read.assert_called_once_with(ETCD_BUILDER_PREFIX, recursive=True)
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self.assertEqual(self.test_executor.start_builder.call_count, 1)
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self.assertEqual(self.etcd_client_mock.write.call_args_list[0][0][0], self.mock_job_key)
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self.assertEqual(self.etcd_client_mock.write.call_args_list[1][0][0], self.mock_job_key)
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# Right now the job is not registered with any managers because etcd has not accepted the job
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self.assertEqual(self.register_component_callback.call_count, 0)
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realm_created = Mock(spec=etcd.EtcdResult)
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realm_created.action = EtcdAction.CREATE
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realm_created.key = os.path.join(ETCD_REALM_PREFIX, REALM_ID)
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realm_created.value = json.dumps({
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'realm': REALM_ID,
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'token': 'beef',
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'builder_id': '123',
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'job_queue_item': self.mock_job.job_item,
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})
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self.manager._handle_realm_change(realm_created)
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self.assertEqual(self.register_component_callback.call_count, 1)
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raise Return(test_component)
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@async_test
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def test_schedule_and_complete(self):
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# Test that a job is properly registered with all of the managers
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test_component = yield From(self._setup_job_for_managers())
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# Take the job ourselves
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yield From(self.manager.build_component_ready(test_component))
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self.etcd_client_mock.delete.assert_called_once_with(os.path.join(ETCD_REALM_PREFIX, REALM_ID))
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self.etcd_client_mock.delete.reset_mock()
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# Finish the job
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yield From(self.manager.job_completed(self.mock_job, BuildJobResult.COMPLETE, test_component))
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self.assertEqual(self.test_executor.stop_builder.call_count, 1)
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self.etcd_client_mock.delete.assert_called_once_with(self.mock_job_key)
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@async_test
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def test_another_manager_takes_job(self):
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# Prepare a job to be taken by another manager
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test_component = yield From(self._setup_job_for_managers())
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realm_deleted = Mock(spec=etcd.EtcdResult)
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realm_deleted.action = EtcdAction.DELETE
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realm_deleted.key = os.path.join(ETCD_REALM_PREFIX, REALM_ID)
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realm_deleted._prev_node = Mock(spec=etcd.EtcdResult)
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realm_deleted._prev_node.value = json.dumps({
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'realm': REALM_ID,
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'token': 'beef',
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'builder_id': '123',
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'job_queue_item': self.mock_job.job_item,
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})
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self.manager._handle_realm_change(realm_deleted)
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self.unregister_component_callback.assert_called_once_with(test_component)
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@async_test
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def test_expiring_worker(self):
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# Test that we are watching before anything else happens
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self.etcd_client_mock.watch.assert_any_call(ETCD_BUILDER_PREFIX, recursive=True, timeout=0)
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# Send a signal to the callback that a worker has expired
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expired_result = Mock(spec=etcd.EtcdResult)
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expired_result.action = EtcdAction.EXPIRE
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expired_result.key = self.mock_job_key
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expired_result._prev_node = Mock(spec=etcd.EtcdResult)
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expired_result._prev_node.value = json.dumps({'builder_id': '1234'})
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self.manager._handle_builder_expiration(expired_result)
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yield From(sleep(.01))
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self.test_executor.stop_builder.assert_called_once_with('1234')
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self.assertEqual(self.test_executor.stop_builder.call_count, 1)
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@async_test
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def test_change_worker(self):
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# Send a signal to the callback that a worker key has been changed
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set_result = Mock(sepc=etcd.EtcdResult)
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set_result.action = 'set'
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set_result.key = self.mock_job_key
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self.manager._handle_builder_expiration(set_result)
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yield From(sleep(.01))
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self.assertEquals(self.test_executor.stop_builder.call_count, 0)
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@async_test
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def test_heartbeat_response(self):
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expiration_timestamp = time.time() + 60
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builder_result = Mock(spec=etcd.EtcdResult)
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builder_result.value = json.dumps({
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'builder_id': '123',
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'expiration': expiration_timestamp,
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'max_expiration': expiration_timestamp,
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})
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self.etcd_client_mock.read = Mock(return_value=builder_result)
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yield From(self.manager.job_heartbeat(self.mock_job))
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# Wait for threads to complete
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yield From(sleep(.01))
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self.job_heartbeat_callback.assert_called_once_with(self.mock_job)
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self.assertEqual(self.etcd_client_mock.write.call_count, 1)
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self.assertEqual(self.etcd_client_mock.write.call_args_list[0][0][0], self.mock_job_key)
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if __name__ == '__main__':
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unittest.main()
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