Source code for

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Service layer used for kubernetes calls.

.. moduleauthor:: Bogdan Valean <>

import requests
from kubernetes import config, client
from kubernetes.config import incluster_config
from concurrent.futures.thread import ThreadPoolExecutor
from tvb.basic.logger.builder import get_logger
from tvb.basic.profile import TvbProfile

LOGGER = get_logger(__name__)

[docs]class KubeNotifier(object):
[docs] @staticmethod def get_pods(application): openshift_pods = None try: response = KubeNotifier.fetch_endpoints(application) openshift_pods = response[0].subsets[0].addresses except Exception as e: LOGGER.error("Failed to retrieve openshift pods for application {}".format(application), e) return openshift_pods
[docs] @staticmethod def notify_pods(url, target_application=TvbProfile.current.web.OPENSHIFT_APPLICATION): if not TvbProfile.current.web.OPENSHIFT_DEPLOY: return"Notify all pods with url {}".format(url)) openshift_pods = KubeNotifier.get_pods(target_application) url_pattern = "http://{}:" + str(TvbProfile.current.web.SERVER_PORT) + url auth_header = KubeNotifier.get_authorization_header() with ThreadPoolExecutor(max_workers=len(openshift_pods)) as executor: for pod in openshift_pods: pod_ip = pod.ip"Notify pod: {}".format(pod_ip)) executor.submit(requests.get, url=url_pattern.format(pod_ip), headers=auth_header)
[docs] @staticmethod def fetch_endpoints(target_application=TvbProfile.current.web.OPENSHIFT_APPLICATION): config.load_incluster_config() v1 = client.CoreV1Api() response = v1.read_namespaced_endpoints_with_http_info(target_application, TvbProfile.current.web.OPENSHIFT_NAMESPACE)"This is the response from KubeClient: {response}") return response
[docs] @staticmethod def get_authorization_token(): kube_config = incluster_config.InClusterConfigLoader( token_filename=incluster_config.SERVICE_TOKEN_FILENAME, cert_filename=incluster_config.SERVICE_CERT_FILENAME, try_refresh_token=True) kube_config.load_and_set(None) return kube_config.token
[docs] @staticmethod def get_authorization_header(): token = KubeNotifier.get_authorization_token() return {"Authorization": "{}".format(token)}
[docs] @staticmethod def check_token(authorization_token): expected_token = KubeNotifier.get_authorization_token() assert authorization_token == expected_token