531 lines
19 KiB
Go
531 lines
19 KiB
Go
// Package httpclient ...
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//
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// Description : httpclient ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 2024-05-31 15:22
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package httpclient
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import (
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"fmt"
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"git.zhangdeman.cn/zhangdeman/network/httpclient/implement"
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"net"
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"strings"
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"time"
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"git.zhangdeman.cn/zhangdeman/consts"
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"git.zhangdeman.cn/zhangdeman/network/httpclient/define"
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"git.zhangdeman.cn/zhangdeman/network/httpclient/log"
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"git.zhangdeman.cn/zhangdeman/network/httpclient/validate"
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"git.zhangdeman.cn/zhangdeman/serialize"
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"resty.dev/v3"
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)
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// NewHttpClient 获取http client
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 15:27 2024/5/31
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func NewHttpClient(reqConfig *define.Request, reqOption *RequestOption) (*HttpClient, error) {
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if nil == reqOption {
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reqOption = &RequestOption{}
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}
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if nil == reqOption.ResponseParser {
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// 没有自定义响应解析实现, 使用内置实现
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reqOption.ResponseParser = &implement.Response{}
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}
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if nil == reqConfig.Logger {
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reqConfig.Logger = log.Get() // 未单独指定日志实例, 则使用全局日志实例
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}
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// 验证配置正确性以及初始化默认值
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if err := validate.RequestConfig(reqConfig); nil != err {
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return nil, err
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}
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if reqConfig.RetryRule == nil {
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reqConfig.RetryRule = &define.RequestRetryRule{
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RetryCount: 0,
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RetryTimeInterval: 0,
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RetryHttpCodeList: []int64{},
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RetryBusinessCodeList: []string{},
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} // 未指定重试规则, 则使用默认重试规则
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}
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// 初始化成功的 http code list
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if len(reqConfig.SuccessHttpCodeList) == 0 {
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reqConfig.SuccessHttpCodeList = []int{}
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}
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if len(reqConfig.Static) > 0 {
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for loc, valMap := range reqConfig.Static {
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if len(valMap) == 0 {
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continue
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}
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l := strings.ToUpper(loc)
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switch l {
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case consts.RequestDataLocationHeader.String():
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if reqConfig.Header == nil {
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reqConfig.Header = make(map[string]any)
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}
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for k, v := range valMap {
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reqConfig.Header[k] = v
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}
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case consts.RequestDataLocationCookie.String():
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if reqConfig.Cookie == nil {
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reqConfig.Cookie = make(map[string]any)
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}
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for k, v := range valMap {
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reqConfig.Cookie[k] = v
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}
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case consts.RequestDataLocationBody.String():
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if reqConfig.Body == nil {
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reqConfig.Body = make(map[string]any)
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}
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for k, v := range valMap {
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reqConfig.Body[k] = v
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}
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case consts.RequestDataLocationQuery.String():
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if reqConfig.Query == nil {
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reqConfig.Query = make(map[string]any)
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}
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for k, v := range valMap {
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reqConfig.Query[k] = v
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}
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}
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}
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}
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if reqConfig.Header == nil {
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reqConfig.Header = make(map[string]any)
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}
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if ua, exist := reqConfig.Header[consts.HeaderKeyUserAgent.String()]; !exist || nil == ua || fmt.Sprintf("%v", ua) == "" {
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reqConfig.Header[consts.HeaderKeyUserAgent.String()] = "resty-v3@network/httpclient"
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}
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restyClient, restyRequest, err := NewRestyClient(reqConfig, reqOption)
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if nil != err {
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if nil != restyClient {
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_ = restyClient.Close()
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}
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return nil, err
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}
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defer restyClient.Close()
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hc := &HttpClient{
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Client: restyClient,
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request: restyRequest,
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reqOption: reqOption,
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reqCfg: reqConfig,
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requestFinishHandler: make([]define.RequestFinishHandler, 0),
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}
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hc.OnRequestFinish(func(req *define.Request, rep *define.Response) {
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if rep.IsSuccess {
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// 请求成功
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log.Record(consts.LogLevelInfo, "接口请求成功", req, rep)
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return
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}
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// 请求失败
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log.Record(consts.LogLevelError, "接口请求失败", req, rep)
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})
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return hc, nil
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}
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// HttpClient 请求客户端
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 15:27 2024/5/31
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type HttpClient struct {
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*resty.Client
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request *resty.Request
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reqOption *RequestOption
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reqCfg *define.Request
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requestFinishHandler []define.RequestFinishHandler
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}
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// OnRequestFinish 请求完成事件
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 18:36 2024/6/1
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func (hc *HttpClient) OnRequestFinish(handlerList ...define.RequestFinishHandler) {
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hc.requestFinishHandler = append(hc.requestFinishHandler, handlerList...)
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}
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// GetRestyClient 获取 resty client
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 15:57 2024/5/31
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func (hc *HttpClient) GetRestyClient() *resty.Client {
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return hc.Client
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}
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// Request 发送请求
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 15:52 2024/5/31
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func (hc *HttpClient) Request() *define.Response {
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var (
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cacheResult *define.Response
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)
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if cacheResult = hc.getCacheResult(); nil == cacheResult {
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// 未命中缓存, 直接请求后端接口, 无需检测预热等逻辑
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return hc.requestBackendApi()
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}
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// 上面若命中缓存, 则后续缓存实例不可能为nil, 无需判断
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// 判断是否开启预热
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cachePreHeatConfig := hc.reqOption.CacheInstance.PreHeatConfig()
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if nil == cachePreHeatConfig {
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log.RecordDebug("接口请求命中缓存, PreHeatConfig未返回预热配置, 不做预热处理", map[string]any{}, hc.reqCfg)
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return nil
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}
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log.RecordDebug("接口请求命中缓存, 进行预热策略处理", map[string]any{
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"cache_info": cacheResult.CacheInfo,
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}, hc.reqCfg)
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defer func() {
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// 命中缓存的情况下, 检测缓存预热策略, 判断是否进行缓存预热
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go func() {
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if !cachePreHeatConfig.Enable || (cachePreHeatConfig.MinTTL <= 0 && cachePreHeatConfig.MinPercent <= 0 && !cachePreHeatConfig.Force) {
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// 无预热配置或未启用预热或者未设置预热规则
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log.RecordDebug("接口请求命中缓存, 未配置缓存预热策略", map[string]any{
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"cache_pre_heat_config": cachePreHeatConfig,
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}, hc.reqCfg)
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return
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}
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// 判断是否触发预热
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if cachePreHeatConfig.Force {
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log.RecordDebug("接口请求命中缓存, 强制执行缓存预热, 忽略其他策略配置", map[string]any{
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"cache_pre_heat_config": cachePreHeatConfig,
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}, hc.reqCfg)
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_ = hc.requestBackendApi()
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return
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}
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// 将百分比的配置归一化成最小剩余时间的配置
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if cachePreHeatConfig.MinPercent > 0 {
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expectMinTTL := hc.reqOption.CacheInstance.CacheTime() * cachePreHeatConfig.MinPercent / 100
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log.RecordDebug("接口请求命中缓存, 配置预热策略：有效时长剩余百分比", map[string]any{
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"cache_pre_heat_config": cachePreHeatConfig,
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"percent_min_ttl": expectMinTTL,
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"min_ttl": cachePreHeatConfig.MinTTL,
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}, hc.reqCfg)
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if cachePreHeatConfig.MinTTL == 0 || cachePreHeatConfig.MinTTL > expectMinTTL {
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cachePreHeatConfig.MinTTL = expectMinTTL
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}
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}
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if cachePreHeatConfig.MinTTL <= 0 {
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// 未配置最小剩余时间
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log.RecordDebug("接口请求命中缓存, 未配置预热市场策略, 不执行预热", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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}, hc.reqCfg)
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return
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}
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ttl := hc.reqOption.CacheInstance.TTL(cacheResult.CacheInfo.CacheKey)
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if ttl < 0 {
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// 不存在或者未设置有效期
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log.RecordDebug("接口请求命中缓存, 当前缓存结果不存在或未设置有效期, 不执行预热", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"note": "预热时间至少在缓存过期前10s触发预热, 以保证足够时间进行预热, 以及不会因为预热尚未完成, 但是大量流量涌入, 进而导致流量穿透",
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}, hc.reqCfg)
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return
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}
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if ttl > cachePreHeatConfig.MinTTL {
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log.RecordDebug("接口请求命中缓存, 缓存结果有效期剩余时长大于配置阈值, 不执行预热", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"remaining_ttl": ttl,
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}, hc.reqCfg)
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return
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}
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log.RecordDebug("接口请求命中缓存, 缓存结果有效期大于剩余时长小于配置阈值, 触发预热", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"remaining_ttl": ttl,
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}, hc.reqCfg)
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// 配置了最小剩余时间,并且key剩余有效期小于最小剩余时间
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// 预热加锁, 并发请求触发预热, 仅触发一个即可, 使用接口缓存key + LOCK做锁的key {{CACHE_KEY}}_LOCK, 按照一般约定, 写请求不会做缓存, 只有读请求会
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lockKey := hc.reqOption.CacheInstance.GetKey(hc.reqCfg) + "_LOCK"
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if err := hc.reqOption.CacheInstance.Lock(lockKey); err != nil {
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log.RecordWarn("接口请求命中缓存, 缓存结果有效期大于剩余时长小于配置阈值, 触发预热, 加锁失败, 未执行预热", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"remaining_ttl": ttl,
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"err_msg": err.Error(),
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}, hc.reqCfg)
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return
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}
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log.RecordDebug("接口请求命中缓存, 缓存结果有效期大于剩余时长小于配置阈值, 触发预热, 加锁成功, 执行预热", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"remaining_ttl": ttl,
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"lock_key": hc.reqCfg.FullUrl,
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}, hc.reqCfg)
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_ = hc.requestBackendApi()
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if err := hc.reqOption.CacheInstance.Unlock(lockKey); nil != err {
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log.RecordError("接口请求命中缓存, 缓存结果有效期大于剩余时长小于配置阈值, 触发预热, 执行预热后, 释放锁失败", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"remaining_ttl": ttl,
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"lock_key": hc.reqCfg.FullUrl,
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"err_msg": err.Error(),
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}, hc.reqCfg)
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return
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}
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log.RecordDebug("接口请求命中缓存, 缓存结果有效期大于剩余时长小于配置阈值, 触发预热, 执行预热后, 释放锁成功", map[string]any{
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"min_ttl": cachePreHeatConfig.MinTTL,
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"remaining_ttl": ttl,
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"lock_key": hc.reqCfg.FullUrl,
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}, hc.reqCfg)
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}()
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}()
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// 命中缓存必然请求成功, 直接记录成功日志即可
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log.Record(consts.LogLevelInfo, "接口请求成功:命中缓存", hc.reqCfg, cacheResult)
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return cacheResult
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}
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// requestBackendApi 请求后端接口
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 18:47 2024/10/9
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func (hc *HttpClient) requestBackendApi() *define.Response {
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var (
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err error
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)
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var response *define.Response
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// +1 是因为正常便会请求一次, 正常请求1次 + 重试次数 = 请求总次数
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for i := 0; i < hc.reqCfg.RetryRule.RetryCount+1; i++ {
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if i > 0 && nil != response {
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// 说明是重试, 记录上一次的请求信息
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response.RequestFinishTime = time.Now().UnixMilli()
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response.UsedTime = response.RequestFinishTime - response.RequestStartTime
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for _, itemAfterResponse := range hc.requestFinishHandler {
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itemAfterResponse(hc.reqCfg, response)
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}
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// 非首次请求, 说明是重试, 暂停指定时间间隔
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time.Sleep(time.Duration(hc.reqCfg.RetryRule.RetryTimeInterval) * time.Millisecond)
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}
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response = hc.newResponse()
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response.Seq = i
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response.RequestCount = i + 1
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if response.RestyResponse, err = hc.request.Send(); nil != err {
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errType := define.RequestFailTypeSend
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if err.Error() == define.ErrRateLimitExceeded.Error() {
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// 命中限流
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errType = define.RequestFailTypeRateLimit
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} else if netErr, ok := err.(net.Error); ok {
|
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if netErr.Timeout() {
|
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// 请求超时
|
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errType = define.RequestFailTypeTimeoutError
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// 重置响应状态码
|
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response.HttpCode = 499
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response.HttpCodeStatus = "request timeout"
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}
|
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}
|
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response.FailInfo = &define.ResponseFailInfo{
|
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Type: errType,
|
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Message: err.Error(),
|
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}
|
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log.RecordDebug("请求发送出现异常", map[string]any{
|
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"err_type": errType,
|
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"err_msg": err.Error(),
|
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}, hc.reqCfg)
|
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|
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if errType == define.RequestFailTypeTimeoutError && !hc.reqOption.ResponseParser.NeedRetry(hc.reqCfg, response) {
|
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// 未配置超时重试
|
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log.RecordDebug("请求超时, 未配置超时重试, 不进行重试", nil, hc.reqCfg)
|
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break
|
|
}
|
|
log.RecordDebug("请求发送出现异常, 进行重试", map[string]any{
|
|
"err_type": errType,
|
|
"err_msg": err.Error(),
|
|
"time_interval": time.Duration(hc.reqCfg.RetryRule.RetryTimeInterval) * time.Millisecond,
|
|
}, hc.reqCfg)
|
|
continue
|
|
}
|
|
|
|
if nil == response.RestyResponse {
|
|
response.FailInfo = &define.ResponseFailInfo{
|
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Type: define.RequestFailTypeSend,
|
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Message: "response instance is nil",
|
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}
|
|
log.RecordDebug("RestyResponse为nil, 准备重试", map[string]any{
|
|
"err_type": response.FailInfo.Type,
|
|
"time_interval": time.Duration(hc.reqCfg.RetryRule.RetryTimeInterval) * time.Millisecond,
|
|
}, hc.reqCfg)
|
|
continue
|
|
}
|
|
// 解析返回信息
|
|
hc.reqOption.ResponseParser.Parse(hc.reqCfg, response)
|
|
// 配置了当前code为成功, 或者未配置任何code, 当前code为2xx, 则认为请求成功
|
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isHttpSuccess := hc.reqOption.ResponseParser.HttpSuccess(hc.reqCfg, response)
|
|
if !isHttpSuccess {
|
|
// 非 成功
|
|
errType := define.RequestFailTypeServerError
|
|
if response.HttpCode/100 == 4 {
|
|
// 客户端错误
|
|
errType = define.RequestFailTypeClientRequestInvalidError
|
|
}
|
|
response.FailInfo = &define.ResponseFailInfo{
|
|
Type: errType,
|
|
Message: "http code is " + response.HttpCodeStatus + ", not success",
|
|
}
|
|
needRetry := hc.reqOption.ResponseParser.NeedRetry(hc.reqCfg, response)
|
|
log.RecordWarn("请求响应的http状态码非成功", map[string]any{
|
|
"err_type": errType,
|
|
"err_msg": response.RestyResponse.Status(),
|
|
"response_http_code": response.HttpCode,
|
|
"success_http_code": hc.reqCfg.SuccessHttpCodeList,
|
|
"allow_retry": needRetry,
|
|
"time_interval": time.Duration(hc.reqCfg.RetryRule.RetryTimeInterval) * time.Millisecond,
|
|
}, hc.reqCfg)
|
|
if !needRetry {
|
|
// 未配置http code重试
|
|
break
|
|
}
|
|
continue
|
|
}
|
|
if !hc.reqOption.ResponseParser.BusinessSuccess(hc.reqCfg, response) {
|
|
response.FailInfo = &define.ResponseFailInfo{
|
|
Type: define.RequestFailTypeBusinessError,
|
|
Message: "business code is " + response.Code + ", not success",
|
|
}
|
|
needRetry := hc.reqOption.ResponseParser.NeedRetry(hc.reqCfg, response)
|
|
|
|
log.RecordWarn("请求响应状态码成功, 业务状态码非成功", map[string]any{
|
|
"err_type": response.FailInfo.Type,
|
|
"err_msg": response.Message,
|
|
"response_code": response.Code,
|
|
"success_code": hc.reqCfg.SuccessCodeList,
|
|
"allow_retry": needRetry,
|
|
"time_interval": time.Duration(hc.reqCfg.RetryRule.RetryTimeInterval) * time.Millisecond,
|
|
}, hc.reqCfg)
|
|
if needRetry {
|
|
// 未配置业务code重试
|
|
break
|
|
}
|
|
continue
|
|
}
|
|
response.IsSuccess = true //设置成功
|
|
response.CacheInfo.SetCache, response.CacheInfo.CacheError = hc.setCacheResult(response) // 设置缓存
|
|
break
|
|
}
|
|
response.RequestFinishTime = time.Now().UnixMilli()
|
|
response.UsedTime = response.RequestFinishTime - response.RequestStartTime
|
|
// 请求完成hook
|
|
for _, itemAfterResponse := range hc.requestFinishHandler {
|
|
itemAfterResponse(hc.reqCfg, response)
|
|
}
|
|
return response
|
|
}
|
|
|
|
// newResponse 默认返回数据
|
|
//
|
|
// Author : go_developer@163.com<白茶清欢>
|
|
//
|
|
// Date : 17:44 2024/6/1
|
|
func (hc *HttpClient) newResponse() *define.Response {
|
|
return &define.Response{
|
|
Header: map[string]any{},
|
|
Cookie: map[string]any{},
|
|
Body: map[string]any{},
|
|
Code: "",
|
|
Message: "",
|
|
Data: "",
|
|
HttpCode: 0,
|
|
HttpCodeStatus: "",
|
|
ResponseDataRule: nil,
|
|
Seq: 0,
|
|
RequestStartTime: time.Now().UnixMilli(),
|
|
RequestFinishTime: 0,
|
|
UsedTime: 0,
|
|
RestyResponse: nil,
|
|
IsSuccess: false,
|
|
CacheInfo: &define.ResponseCacheInfo{
|
|
IsCache: false,
|
|
SetCache: false,
|
|
CacheKey: "",
|
|
CacheValue: "",
|
|
CacheEnable: nil != hc.reqOption.CacheInstance && hc.reqOption.CacheInstance.Enable(),
|
|
CacheError: nil,
|
|
},
|
|
RequestCount: 0,
|
|
FailInfo: nil,
|
|
}
|
|
}
|
|
|
|
// getCacheResult 获取缓存结果
|
|
//
|
|
// Author : go_developer@163.com<白茶清欢>
|
|
//
|
|
// Date : 16:04 2024/6/3
|
|
func (hc *HttpClient) getCacheResult() *define.Response {
|
|
if nil == hc.reqOption.CacheInstance {
|
|
log.RecordDebug("接口请求前缓存检测, 未设置缓存实例", map[string]any{}, hc.reqCfg)
|
|
return nil
|
|
}
|
|
if !hc.reqOption.CacheInstance.Enable() {
|
|
log.RecordDebug("接口请求前缓存检测, 设置缓存实例, 但未启用缓存功能", map[string]any{}, hc.reqCfg)
|
|
return nil
|
|
}
|
|
startTime := time.Now().UnixMilli()
|
|
cacheKey := hc.reqOption.CacheInstance.GetKey(hc.reqCfg)
|
|
cacheValue := strings.TrimSpace(hc.reqOption.CacheInstance.GetValue(cacheKey))
|
|
if len(cacheValue) == 0 {
|
|
log.RecordDebug("接口请求前缓存检测, 未读取到缓存数据", map[string]any{}, hc.reqCfg)
|
|
return nil
|
|
}
|
|
response := hc.newResponse()
|
|
if err := serialize.JSON.UnmarshalWithNumber([]byte(cacheValue), response); nil != err {
|
|
log.RecordWarn("接口请求前缓存检测, 读取到缓存数据, 数据解析失败, 将跳过缓存, 请求对应接口", map[string]any{
|
|
"err_msg": err.Error(),
|
|
}, hc.reqCfg)
|
|
return nil
|
|
}
|
|
response.CacheInfo.IsCache = true // 设置缓存标记
|
|
response.RequestStartTime = startTime // 开始时间
|
|
response.RequestFinishTime = time.Now().UnixMilli() // 结束时间
|
|
response.UsedTime = response.RequestFinishTime - response.RequestStartTime // 耗时
|
|
response.CacheInfo.CacheKey = cacheKey // 缓存key
|
|
response.CacheInfo.CacheValue = cacheValue // 缓存值
|
|
log.RecordDebug("接口请求前缓存检测, 命中缓存, 直接返回缓存数据", map[string]any{}, hc.reqCfg)
|
|
return response
|
|
}
|
|
|
|
// setCacheResult ...
|
|
//
|
|
// Author : go_developer@163.com<白茶清欢>
|
|
//
|
|
// Date : 16:24 2024/6/3
|
|
func (hc *HttpClient) setCacheResult(response *define.Response) (bool, error) {
|
|
if nil == response || nil == hc.reqOption.CacheInstance {
|
|
log.RecordDebug("接口请求成功后, 缓存设置失败", map[string]any{
|
|
"response_is_nil": response == nil,
|
|
"cache_instance_is_nil": hc.reqOption.CacheInstance == nil,
|
|
}, hc.reqCfg)
|
|
return false, nil
|
|
}
|
|
// 全局未开启或者当前请求不支持缓存
|
|
globalCacheEnable := hc.reqOption.CacheInstance.Enable()
|
|
currentRequestAllowCache := hc.reqOption.CacheInstance.IsAllow(hc.reqCfg, response)
|
|
log.RecordDebug("检测缓存是否允许执行", map[string]any{
|
|
"current_cache_enable": currentRequestAllowCache,
|
|
"global_cache_enable": globalCacheEnable,
|
|
}, hc.reqCfg)
|
|
if !globalCacheEnable || !currentRequestAllowCache {
|
|
return false, nil
|
|
}
|
|
cacheKey := hc.reqOption.CacheInstance.GetKey(hc.reqCfg)
|
|
cacheValue := serialize.JSON.MarshalForStringIgnoreError(response)
|
|
if err := hc.reqOption.CacheInstance.SetValue(cacheKey, cacheValue); nil != err {
|
|
log.RecordWarn("开启结果缓存, 缓存设置失败", map[string]any{
|
|
"current_cache_enable": currentRequestAllowCache,
|
|
"global_cache_enable": globalCacheEnable,
|
|
"err_msg": err.Error(),
|
|
}, hc.reqCfg)
|
|
return false, err
|
|
}
|
|
log.RecordDebug("开启结果缓存, 缓存设置成功", map[string]any{
|
|
"current_cache_enable": currentRequestAllowCache,
|
|
"global_cache_enable": globalCacheEnable,
|
|
}, hc.reqCfg)
|
|
response.CacheInfo.CacheKey = cacheKey
|
|
response.CacheInfo.CacheValue = cacheValue
|
|
return true, nil
|
|
}
|