mirror of https://github.com/k3s-io/k3s
93 lines
2.5 KiB
Go
93 lines
2.5 KiB
Go
// Copyright 2018 The etcd 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 flags
|
|
|
|
import (
|
|
"flag"
|
|
"net/url"
|
|
"sort"
|
|
"strings"
|
|
|
|
"go.etcd.io/etcd/pkg/types"
|
|
)
|
|
|
|
// UniqueURLs contains unique URLs
|
|
// with non-URL exceptions.
|
|
type UniqueURLs struct {
|
|
Values map[string]struct{}
|
|
uss []url.URL
|
|
Allowed map[string]struct{}
|
|
}
|
|
|
|
// Set parses a command line set of URLs formatted like:
|
|
// http://127.0.0.1:2380,http://10.1.1.2:80
|
|
// Implements "flag.Value" interface.
|
|
func (us *UniqueURLs) Set(s string) error {
|
|
if _, ok := us.Values[s]; ok {
|
|
return nil
|
|
}
|
|
if _, ok := us.Allowed[s]; ok {
|
|
us.Values[s] = struct{}{}
|
|
return nil
|
|
}
|
|
ss, err := types.NewURLs(strings.Split(s, ","))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
us.Values = make(map[string]struct{})
|
|
us.uss = make([]url.URL, 0)
|
|
for _, v := range ss {
|
|
us.Values[v.String()] = struct{}{}
|
|
us.uss = append(us.uss, v)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// String implements "flag.Value" interface.
|
|
func (us *UniqueURLs) String() string {
|
|
all := make([]string, 0, len(us.Values))
|
|
for u := range us.Values {
|
|
all = append(all, u)
|
|
}
|
|
sort.Strings(all)
|
|
return strings.Join(all, ",")
|
|
}
|
|
|
|
// NewUniqueURLsWithExceptions implements "url.URL" slice as flag.Value interface.
|
|
// Given value is to be separated by comma.
|
|
func NewUniqueURLsWithExceptions(s string, exceptions ...string) *UniqueURLs {
|
|
us := &UniqueURLs{Values: make(map[string]struct{}), Allowed: make(map[string]struct{})}
|
|
for _, v := range exceptions {
|
|
us.Allowed[v] = struct{}{}
|
|
}
|
|
if s == "" {
|
|
return us
|
|
}
|
|
if err := us.Set(s); err != nil {
|
|
plog.Panicf("new UniqueURLs should never fail: %v", err)
|
|
}
|
|
return us
|
|
}
|
|
|
|
// UniqueURLsFromFlag returns a slice from urls got from the flag.
|
|
func UniqueURLsFromFlag(fs *flag.FlagSet, urlsFlagName string) []url.URL {
|
|
return (*fs.Lookup(urlsFlagName).Value.(*UniqueURLs)).uss
|
|
}
|
|
|
|
// UniqueURLsMapFromFlag returns a map from url strings got from the flag.
|
|
func UniqueURLsMapFromFlag(fs *flag.FlagSet, urlsFlagName string) map[string]struct{} {
|
|
return (*fs.Lookup(urlsFlagName).Value.(*UniqueURLs)).Values
|
|
}
|