kubernetes serviceresolver 源码
kubernetes serviceresolver 代码
文件路径：/staging/src/k8s.io/apiserver/pkg/util/webhook/serviceresolver.go
/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package webhook
import (
"errors"
"fmt"
"net/url"
)
// ServiceResolver knows how to convert a service reference into an actual location.
type ServiceResolver interface {
ResolveEndpoint(namespace, name string, port int32) (*url.URL, error)
}
type defaultServiceResolver struct{}
// NewDefaultServiceResolver creates a new default server resolver.
func NewDefaultServiceResolver() ServiceResolver {
return &defaultServiceResolver{}
}
// ResolveEndpoint constructs a service URL from a given namespace and name
// note that the name, namespace, and port are required and by default all
// created addresses use HTTPS scheme.
// for example:
//
// name=ross namespace=andromeda resolves to https://ross.andromeda.svc:443
func (sr defaultServiceResolver) ResolveEndpoint(namespace, name string, port int32) (*url.URL, error) {
if len(name) == 0 || len(namespace) == 0 || port == 0 {
return nil, errors.New("cannot resolve an empty service name or namespace or port")
}
return &url.URL{Scheme: "https", Host: fmt.Sprintf("%s.%s.svc:%d", name, namespace, port)}, nil
}
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