89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
/*
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* Copyright (c) 2022 Huawei Device Co., Ltd.
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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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*/
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package utils
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import (
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"fmt"
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"github.com/sirupsen/logrus"
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"net/http"
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"net/url"
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"strings"
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"sync"
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"time"
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)
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type ProxyConfig struct {
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ServerList string `key:"server_list" default:""`
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User string `key:"user" default:""`
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Password string `key:"password" default:""`
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}
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var proxyClient = http.DefaultClient
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var (
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proxyUser string
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proxyPassword string
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proxyList []string
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proxyIndex int
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proxyLock sync.Mutex
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)
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func init() {
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var config ProxyConfig
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ParseFromConfigFile("proxy", &config)
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if len(config.ServerList) != 0 {
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proxyList = strings.Split(config.ServerList, ",")
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}
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proxyUser = config.User
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proxyPassword = config.Password
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proxyIndex = len(proxyList)
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SwitchProxy()
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t := time.NewTicker(6 * time.Hour)
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go func() {
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<-t.C
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proxyLock.Lock()
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proxyIndex = len(proxyList)
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proxyLock.Unlock()
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}()
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}
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func SwitchProxy() {
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if len(proxyList) == 0 {
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return
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}
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proxyLock.Lock()
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defer proxyLock.Unlock()
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proxyIndex++
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if proxyIndex >= len(proxyList) {
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proxyIndex = 0
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}
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var proxyURL *url.URL
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var err error
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logrus.Infof("switching proxy to %s", proxyList[proxyIndex])
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if proxyUser == "" {
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proxyURL, err = url.Parse(fmt.Sprintf("http://%s", proxyList[proxyIndex]))
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} else {
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proxyURL, err = url.Parse(fmt.Sprintf("http://%s:%s@%s", proxyUser, url.QueryEscape(proxyPassword), proxyList[proxyIndex]))
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}
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if err != nil {
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logrus.Errorf("failed to parse proxy url, err: %v", err)
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}
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proxyClient = &http.Client{
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Transport: &http.Transport{
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Proxy: http.ProxyURL(proxyURL),
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},
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}
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}
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