141 lines
5.0 KiB
Python
141 lines
5.0 KiB
Python
"""Kubernetes Ingress Reconciler"""
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from typing import TYPE_CHECKING, Dict
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from urllib.parse import urlparse
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from kubernetes.client import (
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NetworkingV1beta1Api,
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NetworkingV1beta1HTTPIngressPath,
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NetworkingV1beta1HTTPIngressRuleValue,
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NetworkingV1beta1Ingress,
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NetworkingV1beta1IngressBackend,
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NetworkingV1beta1IngressSpec,
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NetworkingV1beta1IngressTLS,
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)
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from kubernetes.client.models.networking_v1beta1_ingress_rule import (
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NetworkingV1beta1IngressRule,
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)
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from passbook.outposts.controllers.k8s.base import (
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KubernetesObjectReconciler,
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NeedsUpdate,
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)
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from passbook.providers.proxy.models import ProxyProvider
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if TYPE_CHECKING:
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from passbook.outposts.controllers.kubernetes import KubernetesController
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class IngressReconciler(KubernetesObjectReconciler[NetworkingV1beta1Ingress]):
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"""Kubernetes Ingress Reconciler"""
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def __init__(self, controller: "KubernetesController") -> None:
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super().__init__(controller)
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self.api = NetworkingV1beta1Api(controller.client)
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@property
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def name(self) -> str:
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return f"passbook-outpost-{self.controller.outpost.uuid.hex}"
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def reconcile(
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self, current: NetworkingV1beta1Ingress, reference: NetworkingV1beta1Ingress
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):
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# Create a list of all expected host and tls hosts
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expected_hosts = []
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expected_hosts_tls = []
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for proxy_provider in ProxyProvider.objects.filter(
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outpost__in=[self.controller.outpost]
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):
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proxy_provider: ProxyProvider
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external_host_name = urlparse(proxy_provider.external_host)
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expected_hosts.append(external_host_name.hostname)
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if external_host_name.scheme == "https":
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expected_hosts_tls.append(external_host_name.hostname)
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expected_hosts.sort()
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expected_hosts_tls.sort()
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have_hosts = [rule.host for rule in reference.spec.rules]
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have_hosts.sort()
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have_hosts_tls = []
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for tls_config in reference.spec.tls:
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if tls_config:
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have_hosts_tls += tls_config.hosts
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have_hosts_tls.sort()
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if have_hosts != expected_hosts:
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raise NeedsUpdate()
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if have_hosts_tls != expected_hosts_tls:
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raise NeedsUpdate()
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def get_ingress_annotations(self) -> Dict[str, str]:
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"""Get ingress annotations"""
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annotations = {
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# Ensure that with multiple proxy replicas deployed, the same CSRF request
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# goes to the same pod
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"nginx.ingress.kubernetes.io/affinity": "cookie",
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"traefik.ingress.kubernetes.io/affinity": "true",
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}
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annotations.update(
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self.controller.outpost.config.kubernetes_ingress_annotations
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)
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return dict()
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def get_reference_object(self) -> NetworkingV1beta1Ingress:
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"""Get deployment object for outpost"""
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meta = self.get_object_meta(
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name=self.name,
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annotations=self.get_ingress_annotations(),
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)
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rules = []
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tls_hosts = []
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for proxy_provider in ProxyProvider.objects.filter(
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outpost__in=[self.controller.outpost]
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):
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proxy_provider: ProxyProvider
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external_host_name = urlparse(proxy_provider.external_host)
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if external_host_name.scheme == "https":
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tls_hosts.append(external_host_name.hostname)
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rule = NetworkingV1beta1IngressRule(
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host=external_host_name.hostname,
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http=NetworkingV1beta1HTTPIngressRuleValue(
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paths=[
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NetworkingV1beta1HTTPIngressPath(
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backend=NetworkingV1beta1IngressBackend(
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service_name=self.name,
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service_port=self.controller.deployment_ports["http"],
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),
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path="/",
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)
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]
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),
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)
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rules.append(rule)
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tls_config = None
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if tls_hosts:
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tls_config = NetworkingV1beta1IngressTLS(
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hosts=tls_hosts,
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secret_name=self.controller.outpost.config.kubernetes_ingress_secret_name,
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)
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return NetworkingV1beta1Ingress(
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metadata=meta,
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spec=NetworkingV1beta1IngressSpec(rules=rules, tls=[tls_config]),
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)
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def create(self, reference: NetworkingV1beta1Ingress):
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return self.api.create_namespaced_ingress(self.namespace, reference)
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def delete(self, reference: NetworkingV1beta1Ingress):
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return self.api.delete_namespaced_ingress(
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reference.metadata.name, self.namespace
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)
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def retrieve(self) -> NetworkingV1beta1Ingress:
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return self.api.read_namespaced_ingress(self.name, self.namespace)
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def update(
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self, current: NetworkingV1beta1Ingress, reference: NetworkingV1beta1Ingress
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):
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return self.api.patch_namespaced_ingress(
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current.metadata.name, self.namespace, reference
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)
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