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								package ctx
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								import (
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									"io"
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									"mayfly-go/base/ginx"
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									"mayfly-go/base/model"
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									"mayfly-go/base/utils/assert"
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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       *model.LoginAccount // 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 interface{} // 请求参数,主要用于记录日志
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									ResData  interface{} // 响应结果
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									Err      interface{} // 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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										if err := recover(); err != nil {
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											rc.Err = err
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											ginx.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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									assert.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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										ginx.SuccessRes(ginCtx, rc.ResData)
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									}
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								}
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								func (rc *ReqCtx) Download(reader io.Reader, filename string) {
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									rc.noRes = true
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									ginx.Download(rc.GinCtx, reader, 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() *ReqCtx {
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									return &ReqCtx{}
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								}
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								func NewReqCtxWithGin(g *gin.Context) *ReqCtx {
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									return &ReqCtx{GinCtx: g}
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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(li *LogInfo) *ReqCtx {
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									r.LogInfo = li
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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 = &Permission{NeedToken: false}
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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) interface{} {
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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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