package middleware
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import (
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"bytes"
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"encoding/json"
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"io"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"sync"
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"time"
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"srm/utils"
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"github.com/gin-gonic/gin"
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"go.uber.org/zap"
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"srm/global"
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"srm/model/system"
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"srm/service"
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)
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var operationRecordService = service.ServiceGroupApp.SystemServiceGroup.OperationRecordService
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var respPool sync.Pool
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func init() {
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respPool.New = func() interface{} {
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return make([]byte, 1024)
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}
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}
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func OperationRecord() gin.HandlerFunc {
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return func(c *gin.Context) {
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var body []byte
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var userId int
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if c.Request.Method != http.MethodGet {
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var err error
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body, err = io.ReadAll(c.Request.Body)
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if err != nil {
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global.GVA_LOG.Error("read body from request error:", zap.Error(err))
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} else {
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c.Request.Body = io.NopCloser(bytes.NewBuffer(body))
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}
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} else {
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query := c.Request.URL.RawQuery
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query, _ = url.QueryUnescape(query)
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split := strings.Split(query, "&")
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m := make(map[string]string)
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for _, v := range split {
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kv := strings.Split(v, "=")
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if len(kv) == 2 {
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m[kv[0]] = kv[1]
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}
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}
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body, _ = json.Marshal(&m)
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}
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claims, _ := utils.GetClaims(c)
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if claims.BaseClaims.ID != 0 {
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userId = int(claims.BaseClaims.ID)
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} else {
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id, err := strconv.Atoi(c.Request.Header.Get("x-user-id"))
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if err != nil {
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userId = 0
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}
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userId = id
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}
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record := system.SysOperationRecord{
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Ip: c.ClientIP(),
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Method: c.Request.Method,
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Path: c.Request.URL.Path,
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Agent: c.Request.UserAgent(),
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Body: string(body),
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UserID: userId,
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}
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// 上传文件时候 中间件日志进行裁断操作
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if strings.Contains(c.GetHeader("Content-Type"), "multipart/form-data") {
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if len(record.Body) > 1024 {
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// 截断
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newBody := respPool.Get().([]byte)
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copy(newBody, record.Body)
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record.Body = string(newBody)
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defer respPool.Put(newBody[:0])
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}
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}
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writer := responseBodyWriter{
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ResponseWriter: c.Writer,
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body: &bytes.Buffer{},
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}
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c.Writer = writer
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now := time.Now()
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c.Next()
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latency := time.Since(now)
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record.ErrorMessage = c.Errors.ByType(gin.ErrorTypePrivate).String()
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record.Status = c.Writer.Status()
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record.Latency = latency
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record.Resp = writer.body.String()
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if strings.Contains(c.Writer.Header().Get("Pragma"), "public") ||
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strings.Contains(c.Writer.Header().Get("Expires"), "0") ||
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strings.Contains(c.Writer.Header().Get("Cache-Control"), "must-revalidate, post-check=0, pre-check=0") ||
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strings.Contains(c.Writer.Header().Get("Content-Type"), "application/force-download") ||
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strings.Contains(c.Writer.Header().Get("Content-Type"), "application/octet-stream") ||
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strings.Contains(c.Writer.Header().Get("Content-Type"), "application/vnd.ms-excel") ||
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strings.Contains(c.Writer.Header().Get("Content-Type"), "application/download") ||
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strings.Contains(c.Writer.Header().Get("Content-Disposition"), "attachment") ||
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strings.Contains(c.Writer.Header().Get("Content-Transfer-Encoding"), "binary") {
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if len(record.Resp) > 1024 {
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// 截断
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newBody := respPool.Get().([]byte)
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copy(newBody, record.Resp)
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record.Resp = string(newBody)
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defer respPool.Put(newBody[:0])
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}
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}
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if err := operationRecordService.CreateSysOperationRecord(record); err != nil {
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global.GVA_LOG.Error("create operation record error:", zap.Error(err))
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}
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}
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}
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type responseBodyWriter struct {
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gin.ResponseWriter
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body *bytes.Buffer
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}
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func (r responseBodyWriter) Write(b []byte) (int, error) {
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r.body.Write(b)
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return r.ResponseWriter.Write(b)
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}
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