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48 lines
1.6 KiB
Go
48 lines
1.6 KiB
Go
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/*
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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 webhook
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import (
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"errors"
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"fmt"
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"net/url"
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)
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// ServiceResolver knows how to convert a service reference into an actual location.
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type ServiceResolver interface {
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ResolveEndpoint(namespace, name string, port int32) (*url.URL, error)
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}
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type defaultServiceResolver struct{}
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// NewDefaultServiceResolver creates a new default server resolver.
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func NewDefaultServiceResolver() ServiceResolver {
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return &defaultServiceResolver{}
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}
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// ResolveEndpoint constructs a service URL from a given namespace and name
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// note that the name, namespace, and port are required and by default all
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// created addresses use HTTPS scheme.
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// for example:
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// name=ross namespace=andromeda resolves to https://ross.andromeda.svc:443
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func (sr defaultServiceResolver) ResolveEndpoint(namespace, name string, port int32) (*url.URL, error) {
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if len(name) == 0 || len(namespace) == 0 || port == 0 {
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return nil, errors.New("cannot resolve an empty service name or namespace or port")
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}
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return &url.URL{Scheme: "https", Host: fmt.Sprintf("%s.%s.svc:%d", name, namespace, port)}, nil
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}
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