57 lines
1.5 KiB
Go
57 lines
1.5 KiB
Go
/*
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Copyright 2015 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 defaultbackend
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import (
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"fmt"
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"github.com/pkg/errors"
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extensions "k8s.io/api/extensions/v1beta1"
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"k8s.io/ingress-nginx/ingress/annotations/parser"
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"k8s.io/ingress-nginx/ingress/resolver"
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)
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const (
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defaultBackend = "ingress.kubernetes.io/default-backend"
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)
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type backend struct {
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serviceResolver resolver.Service
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}
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// NewParser creates a new default backend annotation parser
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func NewParser(sr resolver.Service) parser.IngressAnnotation {
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return backend{sr}
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}
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// Parse parses the annotations contained in the ingress to use
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// a custom default backend
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func (db backend) Parse(ing *extensions.Ingress) (interface{}, error) {
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s, err := parser.GetStringAnnotation(defaultBackend, ing)
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if err != nil {
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return nil, err
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}
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name := fmt.Sprintf("%v/%v", ing.Namespace, s)
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svc, err := db.serviceResolver.GetService(name)
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if err != nil {
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return nil, errors.Wrapf(err, "unexpected error reading service %v", name)
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}
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return svc, nil
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}
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