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// Copyright 2015 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 types
import (
"errors"
"fmt"
"net"
"net/url"
"sort"
"strings"
)
type URLs []url.URL
func NewURLs(strs []string) (URLs, error) {
all := make([]url.URL, len(strs))
if len(all) == 0 {
return nil, errors.New("no valid URLs given")
}
for i, in := range strs {
in = strings.TrimSpace(in)
u, err := url.Parse(in)
if err != nil {
return nil, err
}
switch u.Scheme {
case "http", "https":
if _, _, err := net.SplitHostPort(u.Host); err != nil {
return nil, fmt.Errorf(`URL address does not have the form "host:port": %s`, in)
}
if u.Path != "" {
return nil, fmt.Errorf("URL must not contain a path: %s", in)
}
case "unix", "unixs":
break
default:
return nil, fmt.Errorf("URL scheme must be http, https, unix, or unixs: %s", in)
}
all[i] = *u
}
us := URLs(all)
us.Sort()
return us, nil
}
func MustNewURLs(strs []string) URLs {
urls, err := NewURLs(strs)
if err != nil {
panic(err)
}
return urls
}
func (us URLs) String() string {
return strings.Join(us.StringSlice(), ",")
}
func (us *URLs) Sort() {
sort.Sort(us)
}
func (us URLs) Len() int { return len(us) }
func (us URLs) Less(i, j int) bool { return us[i].String() < us[j].String() }
func (us URLs) Swap(i, j int) { us[i], us[j] = us[j], us[i] }
func (us URLs) StringSlice() []string {
out := make([]string, len(us))
for i := range us {
out[i] = us[i].String()
}
return out
}
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