585 lines
25 KiB
Python
585 lines
25 KiB
Python
import json
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import time
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import subprocess
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import warnings
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from kubernetes import client, config
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from kubernetes.client.rest import ApiException
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def to_selector(labels):
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return ",".join(["=".join(lbl) for lbl in labels.items()])
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class K8sApi:
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def __init__(self):
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# https://github.com/kubernetes-client/python/issues/309
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warnings.simplefilter("ignore", ResourceWarning)
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self.config = config.load_kube_config()
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self.k8s_client = client.ApiClient()
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self.core_v1 = client.CoreV1Api()
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self.apps_v1 = client.AppsV1Api()
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self.batch_v1_beta1 = client.BatchV1beta1Api()
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self.custom_objects_api = client.CustomObjectsApi()
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self.policy_v1_beta1 = client.PolicyV1beta1Api()
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self.storage_v1_api = client.StorageV1Api()
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class K8s:
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'''
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Wraps around K8s api client and helper methods.
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'''
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RETRY_TIMEOUT_SEC = 1
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def __init__(self, labels='x=y', namespace='default'):
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self.api = K8sApi()
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self.labels = labels
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self.namespace = namespace
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def get_pg_nodes(self, pg_cluster_name, namespace='default'):
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master_pod_node = ''
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replica_pod_nodes = []
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podsList = self.api.core_v1.list_namespaced_pod(namespace, label_selector=pg_cluster_name)
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for pod in podsList.items:
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if pod.metadata.labels.get('spilo-role') == 'master':
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master_pod_node = pod.spec.node_name
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elif pod.metadata.labels.get('spilo-role') == 'replica':
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replica_pod_nodes.append(pod.spec.node_name)
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return master_pod_node, replica_pod_nodes
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def get_cluster_nodes(self, cluster_labels='application=spilo,cluster-name=acid-minimal-cluster', namespace='default'):
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m = []
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r = []
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podsList = self.api.core_v1.list_namespaced_pod(namespace, label_selector=cluster_labels)
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for pod in podsList.items:
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if pod.metadata.labels.get('spilo-role') == 'master' and pod.status.phase == 'Running':
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m.append(pod.spec.node_name)
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elif pod.metadata.labels.get('spilo-role') == 'replica' and pod.status.phase == 'Running':
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r.append(pod.spec.node_name)
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return m, r
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def wait_for_operator_pod_start(self):
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self.wait_for_pod_start("name=postgres-operator")
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# give operator time to subscribe to objects
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time.sleep(1)
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return True
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def get_operator_pod(self):
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pods = self.api.core_v1.list_namespaced_pod(
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'default', label_selector='name=postgres-operator'
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).items
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pods = list(filter(lambda x: x.status.phase == 'Running', pods))
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if len(pods):
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return pods[0]
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return None
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def get_operator_log(self):
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operator_pod = self.get_operator_pod()
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pod_name = operator_pod.metadata.name
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return self.api.core_v1.read_namespaced_pod_log(
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name=pod_name,
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namespace='default'
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)
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def pg_get_status(self, name="acid-minimal-cluster", namespace="default"):
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pg = self.api.custom_objects_api.get_namespaced_custom_object(
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"acid.zalan.do", "v1", namespace, "postgresqls", name)
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return pg.get("status", {}).get("PostgresClusterStatus", None)
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def wait_for_pod_start(self, pod_labels, namespace='default'):
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pod_phase = 'No pod running'
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while pod_phase != 'Running':
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pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=pod_labels).items
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if pods:
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pod_phase = pods[0].status.phase
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def get_service_type(self, svc_labels, namespace='default'):
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svc_type = ''
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svcs = self.api.core_v1.list_namespaced_service(namespace, label_selector=svc_labels, limit=1).items
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for svc in svcs:
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svc_type = svc.spec.type
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return svc_type
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def check_service_annotations(self, svc_labels, annotations, namespace='default'):
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svcs = self.api.core_v1.list_namespaced_service(namespace, label_selector=svc_labels, limit=1).items
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for svc in svcs:
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for key, value in annotations.items():
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if not svc.metadata.annotations or key not in svc.metadata.annotations or svc.metadata.annotations[key] != value:
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print("Expected key {} not found in service annotations {}".format(key, svc.metadata.annotations))
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return False
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return True
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def check_statefulset_annotations(self, sset_labels, annotations, namespace='default'):
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ssets = self.api.apps_v1.list_namespaced_stateful_set(namespace, label_selector=sset_labels, limit=1).items
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for sset in ssets:
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for key, value in annotations.items():
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if key not in sset.metadata.annotations or sset.metadata.annotations[key] != value:
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print("Expected key {} not found in statefulset annotations {}".format(key, sset.metadata.annotations))
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return False
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return True
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def scale_cluster(self, number_of_instances, name="acid-minimal-cluster", namespace="default"):
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body = {
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"spec": {
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"numberOfInstances": number_of_instances
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}
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}
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self.api.custom_objects_api.patch_namespaced_custom_object(
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"acid.zalan.do", "v1", namespace, "postgresqls", name, body)
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def wait_for_running_pods(self, labels, number, namespace=''):
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while self.count_pods_with_label(labels) != number:
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def wait_for_pods_to_stop(self, labels, namespace=''):
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while self.count_pods_with_label(labels) != 0:
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def wait_for_service(self, labels, namespace='default'):
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def get_services():
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return self.api.core_v1.list_namespaced_service(
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namespace, label_selector=labels
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).items
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while not get_services():
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def count_pods_with_rolling_update_flag(self, labels, namespace='default'):
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pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
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return len(list(filter(lambda x: "zalando-postgres-operator-rolling-update-required" in x.metadata.annotations, pods)))
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def count_pods_with_label(self, labels, namespace='default'):
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return len(self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items)
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def count_services_with_label(self, labels, namespace='default'):
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return len(self.api.core_v1.list_namespaced_service(namespace, label_selector=labels).items)
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def count_endpoints_with_label(self, labels, namespace='default'):
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return len(self.api.core_v1.list_namespaced_endpoints(namespace, label_selector=labels).items)
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def count_secrets_with_label(self, labels, namespace='default'):
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return len(self.api.core_v1.list_namespaced_secret(namespace, label_selector=labels).items)
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def count_statefulsets_with_label(self, labels, namespace='default'):
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return len(self.api.apps_v1.list_namespaced_stateful_set(namespace, label_selector=labels).items)
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def count_deployments_with_label(self, labels, namespace='default'):
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return len(self.api.apps_v1.list_namespaced_deployment(namespace, label_selector=labels).items)
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def count_pdbs_with_label(self, labels, namespace='default'):
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return len(self.api.policy_v1_beta1.list_namespaced_pod_disruption_budget(
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namespace, label_selector=labels).items)
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def count_running_pods(self, labels='application=spilo,cluster-name=acid-minimal-cluster', namespace='default'):
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pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
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return len(list(filter(lambda x: x.status.phase == 'Running', pods)))
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def count_pods_with_container_capabilities(self, capabilities, labels, namespace='default'):
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pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
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return len(list(filter(lambda x: x.spec.containers[0].security_context.capabilities.add == capabilities, pods)))
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def wait_for_pod_failover(self, failover_targets, labels, namespace='default'):
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pod_phase = 'Failing over'
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new_pod_node = ''
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pods_with_update_flag = self.count_pods_with_rolling_update_flag(labels, namespace)
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while (pod_phase != 'Running') or (new_pod_node not in failover_targets):
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pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
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if pods:
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new_pod_node = pods[0].spec.node_name
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pod_phase = pods[0].status.phase
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time.sleep(self.RETRY_TIMEOUT_SEC)
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while pods_with_update_flag != 0:
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pods_with_update_flag = self.count_pods_with_rolling_update_flag(labels, namespace)
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def wait_for_namespace_creation(self, namespace='default'):
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ns_found = False
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while ns_found != True:
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ns = self.api.core_v1.list_namespace().items
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for n in ns:
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if n.metadata.name == namespace:
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ns_found = True
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break
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def get_logical_backup_job(self, namespace='default'):
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return self.api.batch_v1_beta1.list_namespaced_cron_job(namespace, label_selector="application=spilo")
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def wait_for_logical_backup_job(self, expected_num_of_jobs):
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while (len(self.get_logical_backup_job().items) != expected_num_of_jobs):
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def wait_for_logical_backup_job_deletion(self):
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self.wait_for_logical_backup_job(expected_num_of_jobs=0)
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def wait_for_logical_backup_job_creation(self):
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self.wait_for_logical_backup_job(expected_num_of_jobs=1)
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def delete_operator_pod(self, step="Delete operator pod"):
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# patching the pod template in the deployment restarts the operator pod
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self.api.apps_v1.patch_namespaced_deployment("postgres-operator", "default", {"spec": {"template": {"metadata": {"annotations": {"step": "{}-{}".format(step, time.time())}}}}})
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self.wait_for_operator_pod_start()
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def update_config(self, config_map_patch, step="Updating operator deployment"):
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self.api.core_v1.patch_namespaced_config_map("postgres-operator", "default", config_map_patch)
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self.delete_operator_pod(step=step)
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def patch_pod(self, data, pod_name, namespace="default"):
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self.api.core_v1.patch_namespaced_pod(pod_name, namespace, data)
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def create_with_kubectl(self, path):
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return subprocess.run(
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["kubectl", "apply", "-f", path],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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def exec_with_kubectl(self, pod, cmd):
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return subprocess.run(["./exec.sh", pod, cmd],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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def patroni_rest(self, pod, path):
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r = self.exec_with_kubectl(pod, "curl localhost:8008/" + path)
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if not r.returncode == 0 or not r.stdout.decode()[0:1] == "{":
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return None
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return json.loads(r.stdout.decode())
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def get_patroni_state(self, pod):
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r = self.exec_with_kubectl(pod, "patronictl list -f json")
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if not r.returncode == 0 or not r.stdout.decode()[0:1] == "[":
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return []
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return json.loads(r.stdout.decode())
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def get_operator_state(self):
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pod = self.get_operator_pod()
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if pod is None:
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return None
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pod = pod.metadata.name
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r = self.exec_with_kubectl(pod, "curl localhost:8080/workers/all/status/")
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if not r.returncode == 0 or not r.stdout.decode()[0:1] == "{":
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return None
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return json.loads(r.stdout.decode())
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def get_patroni_running_members(self, pod="acid-minimal-cluster-0"):
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result = self.get_patroni_state(pod)
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return list(filter(lambda x: "State" in x and x["State"] == "running", result))
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def get_deployment_replica_count(self, name="acid-minimal-cluster-pooler", namespace="default"):
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try:
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deployment = self.api.apps_v1.read_namespaced_deployment(name, namespace)
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return deployment.spec.replicas
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except ApiException:
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return None
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def get_statefulset_image(self, label_selector="application=spilo,cluster-name=acid-minimal-cluster", namespace='default'):
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ssets = self.api.apps_v1.list_namespaced_stateful_set(namespace, label_selector=label_selector, limit=1)
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if len(ssets.items) == 0:
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return None
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return ssets.items[0].spec.template.spec.containers[0].image
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def get_effective_pod_image(self, pod_name, namespace='default'):
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'''
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Get the Spilo image pod currently uses. In case of lazy rolling updates
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it may differ from the one specified in the stateful set.
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'''
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pod = self.api.core_v1.list_namespaced_pod(
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namespace, label_selector="statefulset.kubernetes.io/pod-name=" + pod_name)
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if len(pod.items) == 0:
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return None
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return pod.items[0].spec.containers[0].image
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def get_cluster_pod(self, role, labels='application=spilo,cluster-name=acid-minimal-cluster', namespace='default'):
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labels = labels + ',spilo-role=' + role
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pods = self.api.core_v1.list_namespaced_pod(
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namespace, label_selector=labels).items
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if pods:
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return pods[0]
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def get_cluster_leader_pod(self, labels='application=spilo,cluster-name=acid-minimal-cluster', namespace='default'):
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return self.get_cluster_pod('master', labels, namespace)
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def get_cluster_replica_pod(self, labels='application=spilo,cluster-name=acid-minimal-cluster', namespace='default'):
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return self.get_cluster_pod('replica', labels, namespace)
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class K8sBase:
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'''
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K8s basic API wrapper class supposed to be inherited by other more specific classes for e2e tests
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'''
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RETRY_TIMEOUT_SEC = 1
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def __init__(self, labels='x=y', namespace='default'):
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self.api = K8sApi()
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self.labels = labels
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self.namespace = namespace
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def get_pg_nodes(self, pg_cluster_labels='cluster-name=acid-minimal-cluster', namespace='default'):
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master_pod_node = ''
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replica_pod_nodes = []
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podsList = self.api.core_v1.list_namespaced_pod(namespace, label_selector=pg_cluster_labels)
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for pod in podsList.items:
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if pod.metadata.labels.get('spilo-role') == 'master':
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master_pod_node = pod.spec.node_name
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elif pod.metadata.labels.get('spilo-role') == 'replica':
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replica_pod_nodes.append(pod.spec.node_name)
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return master_pod_node, replica_pod_nodes
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def get_cluster_nodes(self, cluster_labels='cluster-name=acid-minimal-cluster', namespace='default'):
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m = []
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r = []
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podsList = self.api.core_v1.list_namespaced_pod(namespace, label_selector=cluster_labels)
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for pod in podsList.items:
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if pod.metadata.labels.get('spilo-role') == 'master' and pod.status.phase == 'Running':
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m.append(pod.spec.node_name)
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elif pod.metadata.labels.get('spilo-role') == 'replica' and pod.status.phase == 'Running':
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r.append(pod.spec.node_name)
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return m, r
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def wait_for_operator_pod_start(self):
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self.wait_for_pod_start("name=postgres-operator")
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def get_operator_pod(self):
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pods = self.api.core_v1.list_namespaced_pod(
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'default', label_selector='name=postgres-operator'
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).items
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if pods:
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return pods[0]
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return None
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def get_operator_log(self):
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operator_pod = self.get_operator_pod()
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pod_name = operator_pod.metadata.name
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return self.api.core_v1.read_namespaced_pod_log(
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name=pod_name,
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namespace='default'
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)
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def wait_for_pod_start(self, pod_labels, namespace='default'):
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pod_phase = 'No pod running'
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while pod_phase != 'Running':
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pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=pod_labels).items
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if pods:
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pod_phase = pods[0].status.phase
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def get_service_type(self, svc_labels, namespace='default'):
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svc_type = ''
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svcs = self.api.core_v1.list_namespaced_service(namespace, label_selector=svc_labels, limit=1).items
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for svc in svcs:
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svc_type = svc.spec.type
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return svc_type
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def check_service_annotations(self, svc_labels, annotations, namespace='default'):
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svcs = self.api.core_v1.list_namespaced_service(namespace, label_selector=svc_labels, limit=1).items
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for svc in svcs:
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for key, value in annotations.items():
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if key not in svc.metadata.annotations or svc.metadata.annotations[key] != value:
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print("Expected key {} not found in annotations {}".format(key, svc.metadata.annotation))
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return False
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return True
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def check_statefulset_annotations(self, sset_labels, annotations, namespace='default'):
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ssets = self.api.apps_v1.list_namespaced_stateful_set(namespace, label_selector=sset_labels, limit=1).items
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for sset in ssets:
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for key, value in annotations.items():
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if key not in sset.metadata.annotations or sset.metadata.annotations[key] != value:
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print("Expected key {} not found in annotations {}".format(key, sset.metadata.annotation))
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return False
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return True
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def scale_cluster(self, number_of_instances, name="acid-minimal-cluster", namespace="default"):
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body = {
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"spec": {
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"numberOfInstances": number_of_instances
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}
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}
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self.api.custom_objects_api.patch_namespaced_custom_object(
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"acid.zalan.do", "v1", namespace, "postgresqls", name, body)
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def wait_for_running_pods(self, labels, number, namespace=''):
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while self.count_pods_with_label(labels) != number:
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def wait_for_pods_to_stop(self, labels, namespace=''):
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while self.count_pods_with_label(labels) != 0:
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time.sleep(self.RETRY_TIMEOUT_SEC)
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def wait_for_service(self, labels, namespace='default'):
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def get_services():
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|
return self.api.core_v1.list_namespaced_service(
|
|
namespace, label_selector=labels
|
|
).items
|
|
|
|
while not get_services():
|
|
time.sleep(self.RETRY_TIMEOUT_SEC)
|
|
|
|
def count_pods_with_rolling_update_flag(self, labels, namespace='default'):
|
|
pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
|
|
return len(list(filter(lambda x: "zalando-postgres-operator-rolling-update-required" in x.metadata.annotations, pods)))
|
|
|
|
def count_pods_with_label(self, labels, namespace='default'):
|
|
return len(self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items)
|
|
|
|
def count_services_with_label(self, labels, namespace='default'):
|
|
return len(self.api.core_v1.list_namespaced_service(namespace, label_selector=labels).items)
|
|
|
|
def count_endpoints_with_label(self, labels, namespace='default'):
|
|
return len(self.api.core_v1.list_namespaced_endpoints(namespace, label_selector=labels).items)
|
|
|
|
def count_secrets_with_label(self, labels, namespace='default'):
|
|
return len(self.api.core_v1.list_namespaced_secret(namespace, label_selector=labels).items)
|
|
|
|
def count_statefulsets_with_label(self, labels, namespace='default'):
|
|
return len(self.api.apps_v1.list_namespaced_stateful_set(namespace, label_selector=labels).items)
|
|
|
|
def count_deployments_with_label(self, labels, namespace='default'):
|
|
return len(self.api.apps_v1.list_namespaced_deployment(namespace, label_selector=labels).items)
|
|
|
|
def count_pdbs_with_label(self, labels, namespace='default'):
|
|
return len(self.api.policy_v1_beta1.list_namespaced_pod_disruption_budget(
|
|
namespace, label_selector=labels).items)
|
|
|
|
def count_running_pods(self, labels='application=spilo,cluster-name=acid-minimal-cluster', namespace='default'):
|
|
pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
|
|
return len(list(filter(lambda x: x.status.phase == 'Running', pods)))
|
|
|
|
def count_pods_with_container_capabilities(self, capabilities, labels, namespace='default'):
|
|
pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
|
|
return len(list(filter(lambda x: x.spec.containers[0].security_context.capabilities.add == capabilities, pods)))
|
|
|
|
def wait_for_pod_failover(self, failover_targets, labels, namespace='default'):
|
|
pod_phase = 'Failing over'
|
|
new_pod_node = ''
|
|
pods_with_update_flag = self.count_pods_with_rolling_update_flag(labels, namespace)
|
|
|
|
while (pod_phase != 'Running') or (new_pod_node not in failover_targets):
|
|
pods = self.api.core_v1.list_namespaced_pod(namespace, label_selector=labels).items
|
|
if pods:
|
|
new_pod_node = pods[0].spec.node_name
|
|
pod_phase = pods[0].status.phase
|
|
time.sleep(self.RETRY_TIMEOUT_SEC)
|
|
|
|
while pods_with_update_flag != 0:
|
|
pods_with_update_flag = self.count_pods_with_rolling_update_flag(labels, namespace)
|
|
time.sleep(self.RETRY_TIMEOUT_SEC)
|
|
|
|
def get_logical_backup_job(self, namespace='default'):
|
|
return self.api.batch_v1_beta1.list_namespaced_cron_job(namespace, label_selector="application=spilo")
|
|
|
|
def wait_for_logical_backup_job(self, expected_num_of_jobs):
|
|
while (len(self.get_logical_backup_job().items) != expected_num_of_jobs):
|
|
time.sleep(self.RETRY_TIMEOUT_SEC)
|
|
|
|
def wait_for_logical_backup_job_deletion(self):
|
|
self.wait_for_logical_backup_job(expected_num_of_jobs=0)
|
|
|
|
def wait_for_logical_backup_job_creation(self):
|
|
self.wait_for_logical_backup_job(expected_num_of_jobs=1)
|
|
|
|
def delete_operator_pod(self, step="Delete operator deplyment"):
|
|
self.api.apps_v1.patch_namespaced_deployment("postgres-operator","default", {"spec":{"template":{"metadata":{"annotations":{"step":"{}-{}".format(step, time.time())}}}}})
|
|
self.wait_for_operator_pod_start()
|
|
|
|
def update_config(self, config_map_patch, step="Updating operator deployment"):
|
|
self.api.core_v1.patch_namespaced_config_map("postgres-operator", "default", config_map_patch)
|
|
self.delete_operator_pod(step=step)
|
|
|
|
def create_with_kubectl(self, path):
|
|
return subprocess.run(
|
|
["kubectl", "apply", "-f", path],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
|
|
def exec_with_kubectl(self, pod, cmd):
|
|
return subprocess.run(["./exec.sh", pod, cmd],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
|
|
def patroni_rest(self, pod, path):
|
|
r = self.exec_with_kubectl(pod, "curl localhost:8008/" + path)
|
|
if not r.returncode == 0 or not r.stdout.decode()[0:1] == "{":
|
|
return None
|
|
|
|
return json.loads(r.stdout.decode())
|
|
|
|
def get_patroni_state(self, pod):
|
|
r = self.exec_with_kubectl(pod, "patronictl list -f json")
|
|
if not r.returncode == 0 or not r.stdout.decode()[0:1] == "[":
|
|
return []
|
|
return json.loads(r.stdout.decode())
|
|
|
|
def get_patroni_running_members(self, pod):
|
|
result = self.get_patroni_state(pod)
|
|
return list(filter(lambda x: x["State"] == "running", result))
|
|
|
|
def get_statefulset_image(self, label_selector="application=spilo,cluster-name=acid-minimal-cluster", namespace='default'):
|
|
ssets = self.api.apps_v1.list_namespaced_stateful_set(namespace, label_selector=label_selector, limit=1)
|
|
if len(ssets.items) == 0:
|
|
return None
|
|
return ssets.items[0].spec.template.spec.containers[0].image
|
|
|
|
def get_effective_pod_image(self, pod_name, namespace='default'):
|
|
'''
|
|
Get the Spilo image pod currently uses. In case of lazy rolling updates
|
|
it may differ from the one specified in the stateful set.
|
|
'''
|
|
pod = self.api.core_v1.list_namespaced_pod(
|
|
namespace, label_selector="statefulset.kubernetes.io/pod-name=" + pod_name)
|
|
|
|
if len(pod.items) == 0:
|
|
return None
|
|
return pod.items[0].spec.containers[0].image
|
|
|
|
|
|
"""
|
|
Inspiriational classes towards easier writing of end to end tests with one cluster per test case
|
|
"""
|
|
|
|
|
|
class K8sOperator(K8sBase):
|
|
def __init__(self, labels="name=postgres-operator", namespace="default"):
|
|
super().__init__(labels, namespace)
|
|
|
|
|
|
class K8sPostgres(K8sBase):
|
|
def __init__(self, labels="cluster-name=acid-minimal-cluster", namespace="default"):
|
|
super().__init__(labels, namespace)
|
|
|
|
def get_pg_nodes(self):
|
|
master_pod_node = ''
|
|
replica_pod_nodes = []
|
|
podsList = self.api.core_v1.list_namespaced_pod(self.namespace, label_selector=self.labels)
|
|
for pod in podsList.items:
|
|
if pod.metadata.labels.get('spilo-role') == 'master':
|
|
master_pod_node = pod.spec.node_name
|
|
elif pod.metadata.labels.get('spilo-role') == 'replica':
|
|
replica_pod_nodes.append(pod.spec.node_name)
|
|
|
|
return master_pod_node, replica_pod_nodes
|