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84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
import time
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from kubernetes import client, config
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from kubernetes.client.rest import ApiException
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from utils.util_log import test_log as log
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def wait_pods_ready(namespace, label_selector, expected_num=None, timeout=360):
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"""
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wait pods with label selector all ready
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:param namespace: the namespace where the release
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:type namespace: str
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:param label_selector: labels to restrict which pods are waiting to be ready
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:type label_selector: str
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:param expected_num: expected the minimum number of pods to be ready if not None
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:type expected_num: int
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:param timeout: limits the duration of the call
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:type timeout: int
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:example:
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>>> wait_pods_ready("default", "app.kubernetes.io/instance=scale-query", expected_num=9)
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"""
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config.load_kube_config()
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api_instance = client.CoreV1Api()
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try:
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all_pos_ready_flag = False
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time_cnt = 0
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while not all_pos_ready_flag and time_cnt < timeout:
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api_response = api_instance.list_namespaced_pod(namespace=namespace, label_selector=label_selector)
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all_pos_ready_flag = True
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if expected_num is not None and len(api_response.items) < expected_num:
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all_pos_ready_flag = False
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else:
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for item in api_response.items:
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for c in item.status.container_statuses:
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log.info(f"{c.name} status is {c.ready}")
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if c.ready is False:
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all_pos_ready_flag = False
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break
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if not all_pos_ready_flag:
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log.info("all pods are not ready, please wait")
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time.sleep(30)
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time_cnt += 30
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if all_pos_ready_flag:
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log.info(f"all pods in namespace {namespace} with label {label_selector} are ready")
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else:
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log.info(f"timeout for waiting all pods in namespace {namespace} with label {label_selector} ready")
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except ApiException as e:
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log.error("Exception when calling CoreV1Api->list_namespaced_pod: %s\n" % e)
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raise Exception(str(e))
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return all_pos_ready_flag
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def get_pod_list(namespace, label_selector):
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"""
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get pod list with label selector
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:param namespace: the namespace where the release
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:type namespace: str
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:param label_selector: labels to restrict which pods to list
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:type label_selector: str
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:example:
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>>> get_pod_list("chaos-testing", "app.kubernetes.io/instance=test-proxy-pod-failure, component=proxy")
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"""
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config.load_kube_config()
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api_instance = client.CoreV1Api()
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try:
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api_response = api_instance.list_namespaced_pod(namespace=namespace, label_selector=label_selector)
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return api_response.items
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except ApiException as e:
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log.error("Exception when calling CoreV1Api->list_namespaced_pod: %s\n" % e)
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raise Exception(str(e))
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if __name__ == '__main__':
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label = "app.kubernetes.io/instance=test-proxy-pod-failure, component=proxy"
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res = get_pod_list("chaos-testing", label_selector=label)
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