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【更新】更新
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124
base/ginx/req_ctx.go
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124
base/ginx/req_ctx.go
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package ginx
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import (
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"pandax/base/biz"
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"pandax/base/token"
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"time"
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"github.com/gin-gonic/gin"
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)
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// 处理函数
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type HandlerFunc func(*ReqCtx)
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type ReqCtx struct {
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GinCtx *gin.Context // gin context
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// NeedToken bool // 是否需要token
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RequiredPermission *Permission // 需要的权限信息,默认为nil,需要校验token
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LoginAccount *token.Claims // 登录账号信息,只有校验token后才会有值
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LogInfo *LogInfo // 日志相关信息
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ReqParam any // 请求参数,主要用于记录日志
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ResData any // 响应结果
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Err any // 请求错误
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timed int64 // 执行时间
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noRes bool // 无需返回结果,即文件下载等
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}
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func (rc *ReqCtx) Handle(handler HandlerFunc) {
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ginCtx := rc.GinCtx
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defer func() {
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var err any
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err = recover()
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if err != nil {
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rc.Err = err
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ErrorRes(ginCtx, err)
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}
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// 应用所有请求后置处理器
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ApplyHandlerInterceptor(afterHandlers, rc)
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}()
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biz.IsTrue(ginCtx != nil, "ginContext == nil")
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// 默认为不记录请求参数,可在handler回调函数中覆盖赋值
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rc.ReqParam = 0
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// 默认响应结果为nil,可在handler中赋值
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rc.ResData = nil
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// 调用请求前所有处理器
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err := ApplyHandlerInterceptor(beforeHandlers, rc)
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if err != nil {
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panic(err)
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}
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begin := time.Now()
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handler(rc)
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rc.timed = time.Now().Sub(begin).Milliseconds()
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if !rc.noRes {
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SuccessRes(ginCtx, rc.ResData)
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}
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}
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func (rc *ReqCtx) Download(filename string) {
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rc.noRes = true
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Download(rc.GinCtx, filename)
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}
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// 新建请求上下文,默认需要校验token
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func NewReqCtx(g *gin.Context) *ReqCtx {
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return &ReqCtx{GinCtx: g, LogInfo: NewLogInfo("默认日志信息"), RequiredPermission: &Permission{NeedToken: true, NeedCasbin: true}}
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}
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// 调用该方法设置请求描述,则默认记录日志,并不记录响应结果
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func (r *ReqCtx) WithLog(model string) *ReqCtx {
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r.LogInfo.Description = model
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return r
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}
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// 设置请求上下文需要的权限信息
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func (r *ReqCtx) WithRequiredPermission(permission *Permission) *ReqCtx {
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r.RequiredPermission = permission
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return r
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}
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// 是否需要token
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func (r *ReqCtx) WithNeedToken(needToken bool) *ReqCtx {
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r.RequiredPermission.NeedToken = needToken
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return r
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}
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// 是否需要Casbin
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func (r *ReqCtx) WithNeedCasbin(needCasbin bool) *ReqCtx {
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r.RequiredPermission.NeedCasbin = needCasbin
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return r
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}
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// 处理器拦截器函数
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type HandlerInterceptorFunc func(*ReqCtx) error
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type HandlerInterceptors []HandlerInterceptorFunc
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var (
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beforeHandlers HandlerInterceptors
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afterHandlers HandlerInterceptors
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)
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// 使用前置处理器函数
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func UseBeforeHandlerInterceptor(b HandlerInterceptorFunc) {
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beforeHandlers = append(beforeHandlers, b)
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}
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// 使用后置处理器函数
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func UseAfterHandlerInterceptor(b HandlerInterceptorFunc) {
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afterHandlers = append(afterHandlers, b)
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}
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// 应用指定处理器拦截器,如果有一个错误则直接返回错误
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func ApplyHandlerInterceptor(his HandlerInterceptors, rc *ReqCtx) any {
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for _, handler := range his {
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if err := handler(rc); err != nil {
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return err
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}
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}
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return nil
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}
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