2023-01-14 16:29:52 +08:00
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package req
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2021-03-24 17:18:39 +08:00
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import (
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"io"
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2022-06-02 17:41:11 +08:00
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"mayfly-go/pkg/ginx"
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"mayfly-go/pkg/model"
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"mayfly-go/pkg/utils/assert"
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2021-04-21 10:22:09 +08:00
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"time"
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2021-04-16 15:10:07 +08:00
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"github.com/gin-gonic/gin"
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2021-03-24 17:18:39 +08:00
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)
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2021-04-16 15:10:07 +08:00
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// 处理函数
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type HandlerFunc func(*Ctx)
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type Ctx struct {
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Conf *Conf // 请求配置
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GinCtx *gin.Context // gin context
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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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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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}
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func (rc *Ctx) 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 = nil
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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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2021-04-21 10:22:09 +08:00
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begin := time.Now()
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handler(rc)
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rc.timed = time.Since(begin).Milliseconds()
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if rc.Conf == nil || !rc.Conf.noRes {
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ginx.SuccessRes(ginCtx, rc.ResData)
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}
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}
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func (rc *Ctx) Download(reader io.Reader, filename string) {
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ginx.Download(rc.GinCtx, reader, filename)
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}
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func (rc *Ctx) WithConf(conf *Conf) *Ctx {
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rc.Conf = conf
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return rc
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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 (rc *Ctx) WithRequiredPermission(permission *Permission) *Ctx {
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if rc.Conf == nil {
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rc.Conf = new(Conf)
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}
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rc.Conf.requiredPermission = permission
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return rc
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}
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// 设置请求日志信息
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func (rc *Ctx) WithLog(logInfo *LogInfo) *Ctx {
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if rc.Conf == nil {
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rc.Conf = new(Conf)
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}
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rc.Conf.logInfo = logInfo
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return rc
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}
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func (rc *Ctx) GetLogInfo() *LogInfo {
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return rc.Conf.logInfo
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}
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func NewCtxWithGin(g *gin.Context) *Ctx {
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return &Ctx{GinCtx: g}
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}
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2021-05-08 18:00:33 +08:00
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// 处理器拦截器函数
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type HandlerInterceptorFunc func(*Ctx) 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 *Ctx) 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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