108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
// Copyright 2015 The etcd Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package types
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import (
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"fmt"
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"sort"
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"strings"
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)
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// URLsMap is a map from a name to its URLs.
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type URLsMap map[string]URLs
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// NewURLsMap returns a URLsMap instantiated from the given string,
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// which consists of discovery-formatted names-to-URLs, like:
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// mach0=http://1.1.1.1:2380,mach0=http://2.2.2.2::2380,mach1=http://3.3.3.3:2380,mach2=http://4.4.4.4:2380
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func NewURLsMap(s string) (URLsMap, error) {
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m := parse(s)
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cl := URLsMap{}
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for name, urls := range m {
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us, err := NewURLs(urls)
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if err != nil {
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return nil, err
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}
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cl[name] = us
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}
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return cl, nil
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}
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// NewURLsMapFromStringMap takes a map of strings and returns a URLsMap. The
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// string values in the map can be multiple values separated by the sep string.
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func NewURLsMapFromStringMap(m map[string]string, sep string) (URLsMap, error) {
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var err error
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um := URLsMap{}
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for k, v := range m {
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um[k], err = NewURLs(strings.Split(v, sep))
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if err != nil {
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return nil, err
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}
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}
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return um, nil
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}
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// String turns URLsMap into discovery-formatted name-to-URLs sorted by name.
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func (c URLsMap) String() string {
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var pairs []string
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for name, urls := range c {
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for _, url := range urls {
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pairs = append(pairs, fmt.Sprintf("%s=%s", name, url.String()))
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}
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}
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sort.Strings(pairs)
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return strings.Join(pairs, ",")
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}
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// URLs returns a list of all URLs.
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// The returned list is sorted in ascending lexicographical order.
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func (c URLsMap) URLs() []string {
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var urls []string
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for _, us := range c {
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for _, u := range us {
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urls = append(urls, u.String())
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}
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}
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sort.Strings(urls)
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return urls
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}
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// Len returns the size of URLsMap.
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func (c URLsMap) Len() int {
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return len(c)
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}
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// parse parses the given string and returns a map listing the values specified for each key.
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func parse(s string) map[string][]string {
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m := make(map[string][]string)
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for s != "" {
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key := s
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if i := strings.IndexAny(key, ","); i >= 0 {
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key, s = key[:i], key[i+1:]
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} else {
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s = ""
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}
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if key == "" {
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continue
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}
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value := ""
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if i := strings.Index(key, "="); i >= 0 {
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key, value = key[:i], key[i+1:]
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}
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m[key] = append(m[key], value)
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}
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return m
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}
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