mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-06 17:46:57 +02:00
b0f437a438
* feat(aws): support hostnames as endpoint targets * docs: describe how to run ExternalDNS on AWS * docs: update changelog with CNAME feature * docs: update changelog to include AWS documentation * fix(aws): test that updating records removes the old value * feat(google): add CNAME support to Google provider * fix(source): sanitize source and target hostnames * docs: update changelog to include latest changes * docs(aws): mention that ExternalDNS takes full ownership of a hosted zone * fix(aws): switch route53 tests to use endpoint pointers * docs: add TODO to remove record filtering once ownership is in place
84 lines
2.6 KiB
Go
84 lines
2.6 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package source
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import (
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/pkg/api/v1"
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"k8s.io/client-go/pkg/apis/extensions/v1beta1"
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"github.com/kubernetes-incubator/external-dns/endpoint"
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)
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// ingressSource is an implementation of Source for Kubernetes ingress objects.
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// Ingress implementation will use the spec.rules.host value for the hostname
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// Ingress annotations are ignored
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type ingressSource struct {
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client kubernetes.Interface
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namespace string
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}
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// NewIngressSource creates a new ingressSource with the given client and namespace scope.
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func NewIngressSource(client kubernetes.Interface, namespace string) Source {
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return &ingressSource{client: client, namespace: namespace}
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}
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// Endpoints returns endpoint objects for each host-target combination that should be processed.
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// Retrieves all ingress resources on all namespaces
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func (sc *ingressSource) Endpoints() ([]*endpoint.Endpoint, error) {
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ingresses, err := sc.client.Extensions().Ingresses(sc.namespace).List(v1.ListOptions{})
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if err != nil {
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return nil, err
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}
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endpoints := []*endpoint.Endpoint{}
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for _, ing := range ingresses.Items {
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ingEndpoints := endpointsFromIngress(&ing)
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endpoints = append(endpoints, ingEndpoints...)
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}
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return endpoints, nil
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}
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// endpointsFromIngress extracts the endpoints from ingress object
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func endpointsFromIngress(ing *v1beta1.Ingress) []*endpoint.Endpoint {
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var endpoints []*endpoint.Endpoint
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// Check controller annotation to see if we are responsible.
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controller, exists := ing.Annotations[controllerAnnotationKey]
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if exists && controller != controllerAnnotationValue {
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return endpoints
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}
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for _, rule := range ing.Spec.Rules {
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if rule.Host == "" {
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continue
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}
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for _, lb := range ing.Status.LoadBalancer.Ingress {
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if lb.IP != "" {
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endpoints = append(endpoints, endpoint.NewEndpoint(sanitizeHostname(rule.Host), lb.IP))
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}
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if lb.Hostname != "" {
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endpoints = append(endpoints, endpoint.NewEndpoint(sanitizeHostname(rule.Host), sanitizeHostname(lb.Hostname)))
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}
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}
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}
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return endpoints
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}
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