mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-06 17:46:57 +02:00
79 lines
2.1 KiB
Go
79 lines
2.1 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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// 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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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.Endpoint{
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DNSName: rule.Host,
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Target: lb.IP,
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})
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}
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if lb.Hostname != "" {
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endpoints = append(endpoints, endpoint.Endpoint{
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DNSName: rule.Host,
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Target: lb.Hostname,
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})
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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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