[#369] Request reproducer

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

cmd/s3-playback/internal/playback/multipart.go

@@ -0,0 +1,50 @@
+package playback
+
+import (
+	"encoding/xml"
+	"fmt"
+	"net/http"
+)
+
+type MultipartUpload struct {
+	XMLName  xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ InitiateMultipartUploadResult" json:"-"`
+	Bucket   string   `json:"bucket" xml:"Bucket"`
+	Key      string   `json:"key" xml:"Key"`
+	UploadID string   `json:"uploadId" xml:"UploadId"`
+}
+
+func HandleResponse(r *http.Request, mparts map[string]MultipartUpload, resp []byte, logResponse []byte) error {
+	var mpart, mpartOld MultipartUpload
+	if r.Method != "POST" || !r.URL.Query().Has("uploads") {
+		return nil
+	}
+	// get new uploadId from response
+	err := xml.Unmarshal(resp, &mpart)
+	if err != nil {
+		return fmt.Errorf("xml unmarshal error: %w", err)
+	}
+	// get old uploadId from logs
+	err = xml.Unmarshal(logResponse, &mpartOld)
+	if err != nil {
+		return fmt.Errorf("xml unmarshal error: %w", err)
+	}
+	if mpartOld.UploadID != "" {
+		mparts[mpartOld.UploadID] = mpart
+	}
+
+	return nil
+}
+
+func SwapUploadID(r *http.Request, settings *Settings) error {
+	var uploadID string
+	query := r.URL.Query()
+	uploadID = query.Get("uploadId")
+	mpart, ok := settings.Multiparts[uploadID]
+	if !ok {
+		return fmt.Errorf("no multipart upload with specified uploadId")
+	}
+	query.Set("uploadId", mpart.UploadID)
+	r.URL.RawQuery = query.Encode()
+
+	return nil
+}