feat: add retry method with fileInfoCache to avoid re-running processFile

README.md

@@ -97,10 +97,10 @@ Then open `http://localhost:8000`.
 
 ### Methods
 
-| Name    | Type                     | Description                          |
-| ------- | ------------------------ | ------------------------------------ |
-| `abort` | `(file: RcFile) => void` | Abort an active upload.              |
-| `retry` | `(file: RcFile) => void` | Retry an upload for a specific file. |
+| Name | Type | Description |
+| --- | --- | --- |
+| `abort` | `(file: RcFile) => void` | Abort an active upload. |
+| `retry` | `(file: RcFile) => void` | Retry an upload for a specific file. Only works for files that have been uploaded at least once (have cached info). Reuses the processed `beforeUpload`, `action`, and `data` from the first attempt. If no cache is found, fires `onError` with `UploadRetrySkipError`. Skips silently if the file has an active request. |
 
 ## Development
 

README.zh-CN.md

@@ -97,10 +97,10 @@ npm start
 
 ### 方法
 
-| 名称    | 类型                     | 说明                 |
-| ------- | ------------------------ | -------------------- |
-| `abort` | `(file: RcFile) => void` | 中止进行中的上传。   |
-| `retry` | `(file: RcFile) => void` | 重试特定文件的上传。 |
+| 名称 | 类型 | 说明 |
+| --- | --- | --- |
+| `abort` | `(file: RcFile) => void` | 中止进行中的上传。 |
+| `retry` | `(file: RcFile) => void` | 重试特定文件的上传。仅对至少上传过一次（有缓存信息）的文件生效，复用首次处理的 `beforeUpload`、`action` 和 `data`。若缓存不存在，通过 `onError` 通知 `UploadRetrySkipError`；若文件已有活动请求则静默跳过。 |
 
 ## 本地开发
 

src/AjaxUploader.tsx

@@ -27,6 +27,8 @@ class AjaxUploader extends Component<UploadProps> {
 
   reqs: Record<string, any> = {};
 
+  private fileInfoCache: Map<string, ParsedFileInfo> = new Map();
+
   private fileInput: HTMLInputElement;
 
   private _isMounted: boolean;
@@ -157,6 +159,7 @@ class AjaxUploader extends Component<UploadProps> {
   componentWillUnmount() {
     this._isMounted = false;
     this.abort();
+    this.fileInfoCache.clear();
     document.removeEventListener('paste', this.onFilePaste);
   }
 
@@ -269,6 +272,8 @@ class AjaxUploader extends Component<UploadProps> {
 
     const { uid } = origin;
 
+    this.fileInfoCache.set(uid, { data, origin, action, parsedFile });
+
     const request = customRequest || defaultRequest;
 
     const requestOption = {
@@ -297,22 +302,42 @@ class AjaxUploader extends Component<UploadProps> {
       },
     };
 
-    onStart(origin);
-    this.reqs[uid] = request(requestOption, { defaultRequest });
+    this.reqs[uid] = {};
+    try {
+      onStart(origin);
+    } catch (e) {
+      delete this.reqs[uid];
+      throw e;
+    }
+    try {
+      const handle = request(requestOption, { defaultRequest });
+      if (this.reqs[uid]) {
+        this.reqs[uid] = handle || {};
+      }
+    } catch (e) {
+      delete this.reqs[uid];
+      const { onError } = this.props;
+      const err = e instanceof Error ? e : new Error(String(e));
+      onError?.(err as UploadRequestError, null, parsedFile);
+    }
   }
 
   retry = (originFile: RcFile) => {
     const { uid } = originFile;
-    this.processFile(originFile, [originFile])
-      .then(fileInfo => {
-        if (this.reqs[uid]) {
-          return;
-        }
-        if (fileInfo.parsedFile) {
-          this.post(fileInfo);
-        }
-      })
-      .catch(() => {});
+    if (this.reqs[uid]) {
+      return;
+    }
+
+    const cachedFileInfo = this.fileInfoCache.get(uid);
+    if (!cachedFileInfo) {
+      const { onError } = this.props;
+      const err = new Error('retry skipped: file was never uploaded') as UploadRequestError;
+      err.name = 'UploadRetrySkipError';
+      onError?.(err, null, originFile);
+      return;
+    }
+
+    this.post(cachedFileInfo);
   };
 
   reset() {