114 lines
4.2 KiB
Python
Executable File
114 lines
4.2 KiB
Python
Executable File
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import unittest, yaml, time
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from kubernetes import client, config, utils
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from pprint import pprint
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import subprocess
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class SampleTestCase(unittest.TestCase):
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nodes = set(["kind-test-postgres-operator-worker", "kind-test-postgres-operator-worker2", "kind-test-postgres-operator-worker3"])
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@classmethod
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def setUpClass(cls):
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'''
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Deploy operator to a "kind" cluster created by /e2e/run.sh using examples from /manifests.
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This operator deployment is to be shared among all tests of this suit.
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'''
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_ = config.load_kube_config()
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k8s_client = client.ApiClient()
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# HACK
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# 1. creating RBAC entites with a separate client fails with
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# "AttributeError: object has no attribute 'select_header_accept'"
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# 2. utils.create_from_yaml cannot create multiple entites from a single file
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subprocess.run(["kubectl", "create", "-f", "manifests/operator-service-account-rbac.yaml"])
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for filename in ["configmap.yaml", "postgres-operator.yaml"]:
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path = "manifests/" + filename
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utils.create_from_yaml(k8s_client, path)
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v1 = client.CoreV1Api()
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pod_phase = None
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while pod_phase != 'Running':
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pods = v1.list_namespaced_pod('default', label_selector='name=postgres-operator').items
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if pods:
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operator_pod = pods[0]
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pod_phase = operator_pod.status.phase
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print("Waiting for the operator pod to start. Current phase: " + pod_phase)
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time.sleep(5)
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@classmethod
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def tearDownClass(cls):
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'''
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/e2e/run.sh deletes the 'kind' cluster after successful run along with all operator-related entities.
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In the case of test failure the cluster will stay to enable manual examination;
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next invocation of "make e2e" will re-create it.
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'''
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pass
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def setUp(self):
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'''
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Deploy a new Postgres DB for each test.
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'''
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self.config = config.load_kube_config()
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self.v1 = client.CoreV1Api()
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k8s_client = client.ApiClient()
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# TODO substitue with utils.create_from_yaml and Python client for acid.zalan.do
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subprocess.run(["kubectl", "create", "-f", "manifests/minimal-postgres-manifest.yaml"])
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pod_phase = None
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while pod_phase != 'Running':
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pods = self.v1.list_namespaced_pod('default', label_selector='spilo-role=master').items
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if pods:
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operator_pod = pods[0]
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pod_phase = operator_pod.status.phase
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print("Waiting for the Spilo master pod to start. Current phase: " + pod_phase)
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time.sleep(5)
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def test_assign_labels_to_nodes(self):
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"""
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Ensure labeling nodes through the externally connected Python client works.
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Sample test case to illustrate potential test structure
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"""
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body = {
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"metadata": {
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"labels": {
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"lifecycle-status": "ready"
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}
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}
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}
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for node in self.nodes:
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_ = self.v1.patch_node(node, body)
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labelled_nodes = set([])
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for node in self.nodes:
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v1_node_var = self.v1.read_node(node)
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if v1_node_var.metadata.labels['lifecycle-status'] == 'ready':
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labelled_nodes.add(v1_node_var.metadata.name)
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self.assertEqual(self.nodes, labelled_nodes,"nodes incorrectly labelled")
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def tearDown(self):
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"""
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Delete the database to avoid introducing dependencies between tests
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"""
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# HACK workaround for #551
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time.sleep(60)
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_ = config.load_kube_config()
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crd = client.CustomObjectsApi()
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body = client.V1DeleteOptions()
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_ = crd.delete_namespaced_custom_object("acid.zalan.do", "v1", "default", "postgresqls", "acid-minimal-cluster", body)
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# wait for the pods to be deleted
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pods = self.v1.list_namespaced_pod('default', label_selector='spilo-role=master').items
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while pods:
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pods = self.v1.list_namespaced_pod('default', label_selector='spilo-role=master').items
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print("Waiting for the database to be deleted.")
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time.sleep(5)
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if __name__ == '__main__':
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unittest.main() |