82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
package middleware
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import (
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"errors"
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"strings"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/net/ghttp"
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"github.com/qianfree/team-api/internal/response"
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)
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// downloadContentTypes lists Content-Type prefixes that indicate a file download.
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// When matched, the middleware skips JSON wrapping to avoid appending {"code":0,...} to the file.
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var downloadContentTypes = []string{
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"text/csv",
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"application/vnd.openxmlformats",
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"application/octet-stream",
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}
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// MiddlewareHandlerResponse is the GoFrame standard response handler.
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// It reads the controller method's return value via r.GetHandlerResponse()
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// and wraps it in the project's custom response format (code/message/data/request_id).
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func MiddlewareHandlerResponse(r *ghttp.Request) {
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r.Middleware.Next()
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// If there's an error set by the controller
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if err := r.GetError(); err != nil {
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// Only log system-level errors (5xx / unknown); skip business & client errors
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// to avoid polluting logs with normal validation failures, auth errors, etc.
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if isSystemError(err) {
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g.Log().Warningf(r.Context(), "[HandlerResponse] path=%s, body=%s, error=%+v, type=%T", r.URL.Path, r.GetBodyString(), err, err)
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}
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response.Error(r, err)
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return
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}
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// Skip JSON wrapping for file downloads (CSV, Excel, etc.)
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// Export functions write directly to the raw writer and set Content-Type before writing.
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ct := r.Response.Header().Get("Content-Type")
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for _, prefix := range downloadContentTypes {
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if strings.HasPrefix(ct, prefix) {
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return
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}
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}
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// The controller method returns (res, error); GoFrame stores the first
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// return value in r.handlerResponse, accessible via GetHandlerResponse().
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res := r.GetHandlerResponse()
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if res != nil {
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response.Success(r, res)
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return
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}
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// Void response (e.g., delete/update operations returning nil pointer)
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if r.Response.BufferLength() == 0 {
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response.Success(r, nil)
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}
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}
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// isSystemError returns true if the error is a system-level error (5xx / unknown)
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// that should be logged. Business errors (4xx, >= 10000) and client errors are
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// considered normal flow and should NOT pollute logs.
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func isSystemError(err error) bool {
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var gerr *gerror.Error
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if !errors.As(err, &gerr) {
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// Raw Go error (no gerror code) — treat as system error
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return true
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}
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code := gerr.Code().Code()
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// Client errors (400-499): validation, auth, not found, etc.
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if code >= 400 && code < 500 {
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return false
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}
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// Business rule errors (>= 10000): insufficient balance, quota exceeded, etc.
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if code >= 10000 {
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return false
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}
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return true
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}
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