Source code for airflow.contrib.operators.kubernetes_pod_operator

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from airflow.exceptions import AirflowException
from airflow.models import BaseOperator
from airflow.utils.decorators import apply_defaults
from airflow.contrib.kubernetes import kube_client, pod_generator, pod_launcher
from airflow.contrib.kubernetes.pod import Resources
from airflow.utils.state import State

[docs]class KubernetesPodOperator(BaseOperator): """ Execute a task in a Kubernetes Pod :param image: Docker image you wish to launch. Defaults to, but fully qualified URLS will point to custom repositories :type image: str :param namespace: the namespace to run within kubernetes :type namespace: str :param cmds: entrypoint of the container. (templated) The docker images's entrypoint is used if this is not provide. :type cmds: list[str] :param arguments: arguments of the entrypoint. (templated) The docker image's CMD is used if this is not provided. :type arguments: list[str] :param image_pull_policy: Specify a policy to cache or always pull an image :type image_pull_policy: str :param image_pull_secrets: Any image pull secrets to be given to the pod. If more than one secret is required, provide a comma separated list: secret_a,secret_b :type image_pull_secrets: str :param volume_mounts: volumeMounts for launched pod :type volume_mounts: list[airflow.contrib.kubernetes.volume_mount.VolumeMount] :param volumes: volumes for launched pod. Includes ConfigMaps and PersistentVolumes :type volumes: list[airflow.contrib.kubernetes.volume.Volume] :param labels: labels to apply to the Pod :type labels: dict :param startup_timeout_seconds: timeout in seconds to startup the pod :type startup_timeout_seconds: int :param name: name of the task you want to run, will be used to generate a pod id :type name: str :param env_vars: Environment variables initialized in the container. (templated) :type env_vars: dict :param secrets: Kubernetes secrets to inject in the container, They can be exposed as environment vars or files in a volume. :type secrets: list[airflow.contrib.kubernetes.secret.Secret] :param in_cluster: run kubernetes client with in_cluster configuration :type in_cluster: bool :param cluster_context: context that points to kubernetes cluster. Ignored when in_cluster is True. If None, current-context is used. :type cluster_context: str :param get_logs: get the stdout of the container as logs of the tasks :type get_logs: bool :param affinity: A dict containing a group of affinity scheduling rules :type affinity: dict :param node_selectors: A dict containing a group of scheduling rules :type node_selectors: dict :param config_file: The path to the Kubernetes config file :type config_file: str :param xcom_push: If xcom_push is True, the content of the file /airflow/xcom/return.json in the container will also be pushed to an XCom when the container completes. :type xcom_push: bool :param is_delete_operator_pod: What to do when the pod reaches its final state, or the execution is interrupted. If False (default): do nothing, If True: delete the pod :type is_delete_operator_pod: bool :param hostnetwork: If True enable host networking on the pod :type hostnetwork: bool :param tolerations: A list of kubernetes tolerations :type tolerations: list tolerations :param configmaps: A list of configmap names objects that we want mount as env variables :type configmaps: list[str] """
[docs] template_fields = ('cmds', 'arguments', 'env_vars', 'config_file')
[docs] def execute(self, context): try: client = kube_client.get_kube_client(in_cluster=self.in_cluster, cluster_context=self.cluster_context, config_file=self.config_file) gen = pod_generator.PodGenerator() for mount in self.volume_mounts: gen.add_mount(mount) for volume in self.volumes: gen.add_volume(volume) pod = gen.make_pod( namespace=self.namespace, image=self.image,, cmds=self.cmds, arguments=self.arguments, labels=self.labels, ) pod.service_account_name = self.service_account_name pod.secrets = self.secrets pod.envs = self.env_vars pod.image_pull_policy = self.image_pull_policy pod.image_pull_secrets = self.image_pull_secrets pod.annotations = self.annotations pod.resources = self.resources pod.affinity = self.affinity pod.node_selectors = self.node_selectors pod.hostnetwork = self.hostnetwork pod.tolerations = self.tolerations pod.configmaps = self.configmaps pod.security_context = self.security_context launcher = pod_launcher.PodLauncher(kube_client=client, extract_xcom=self.xcom_push) try: (final_state, result) = launcher.run_pod( pod, startup_timeout=self.startup_timeout_seconds, get_logs=self.get_logs) finally: if self.is_delete_operator_pod: launcher.delete_pod(pod) if final_state != State.SUCCESS: raise AirflowException( 'Pod returned a failure: {state}'.format(state=final_state) ) if self.xcom_push: return result except AirflowException as ex: raise AirflowException('Pod Launching failed: {error}'.format(error=ex))
@apply_defaults def __init__(self, namespace, image, name, cmds=None, arguments=None, volume_mounts=None, volumes=None, env_vars=None, secrets=None, in_cluster=False, cluster_context=None, labels=None, startup_timeout_seconds=120, get_logs=True, image_pull_policy='IfNotPresent', annotations=None, resources=None, affinity=None, config_file=None, xcom_push=False, node_selectors=None, image_pull_secrets=None, service_account_name="default", is_delete_operator_pod=False, hostnetwork=False, tolerations=None, configmaps=None, security_context=None, *args, **kwargs): super(KubernetesPodOperator, self).__init__(*args, **kwargs) self.image = image self.namespace = namespace self.cmds = cmds or [] self.arguments = arguments or [] self.labels = labels or {} self.startup_timeout_seconds = startup_timeout_seconds = name self.env_vars = env_vars or {} self.volume_mounts = volume_mounts or [] self.volumes = volumes or [] self.secrets = secrets or [] self.in_cluster = in_cluster self.cluster_context = cluster_context self.get_logs = get_logs self.image_pull_policy = image_pull_policy self.node_selectors = node_selectors or {} self.annotations = annotations or {} self.affinity = affinity or {} self.xcom_push = xcom_push self.resources = resources or Resources() self.config_file = config_file self.image_pull_secrets = image_pull_secrets self.service_account_name = service_account_name self.is_delete_operator_pod = is_delete_operator_pod self.hostnetwork = hostnetwork self.tolerations = tolerations or [] self.configmaps = configmaps or [] self.security_context = security_context or {}