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feat(thunder): add offline download tool (#7673)
* feat(thunder): add offline download tool * fix(thunder): improve error handling and parse file size in status response --------- Co-authored-by: Andy Hsu <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| package thunder | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "strconv" | ||
|
|
||
| "github.com/alist-org/alist/v3/drivers/thunder" | ||
| "github.com/alist-org/alist/v3/internal/errs" | ||
| "github.com/alist-org/alist/v3/internal/model" | ||
| "github.com/alist-org/alist/v3/internal/offline_download/tool" | ||
| "github.com/alist-org/alist/v3/internal/op" | ||
| ) | ||
|
|
||
| type Thunder struct { | ||
| refreshTaskCache bool | ||
| } | ||
|
|
||
| func (t *Thunder) Name() string { | ||
| return "thunder" | ||
| } | ||
|
|
||
| func (t *Thunder) Items() []model.SettingItem { | ||
| return nil | ||
| } | ||
|
|
||
| func (t *Thunder) Run(task *tool.DownloadTask) error { | ||
| return errs.NotSupport | ||
| } | ||
|
|
||
| func (t *Thunder) Init() (string, error) { | ||
| t.refreshTaskCache = false | ||
| return "ok", nil | ||
| } | ||
|
|
||
| func (t *Thunder) IsReady() bool { | ||
| return true | ||
| } | ||
|
|
||
| func (t *Thunder) AddURL(args *tool.AddUrlArgs) (string, error) { | ||
| // 添加新任务刷新缓存 | ||
| t.refreshTaskCache = true | ||
| // args.TempDir 已经被修改为了 DstDirPath | ||
| storage, actualPath, err := op.GetStorageAndActualPath(args.TempDir) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| thunderDriver, ok := storage.(*thunder.Thunder) | ||
| if !ok { | ||
| return "", fmt.Errorf("unsupported storage driver for offline download, only Thunder is supported") | ||
| } | ||
|
|
||
| ctx := context.Background() | ||
| parentDir, err := op.GetUnwrap(ctx, storage, actualPath) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| task, err := thunderDriver.OfflineDownload(ctx, args.Url, parentDir, "") | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to add offline download task: %w", err) | ||
| } | ||
|
|
||
| return task.ID, nil | ||
| } | ||
|
|
||
| func (t *Thunder) Remove(task *tool.DownloadTask) error { | ||
| storage, _, err := op.GetStorageAndActualPath(task.DstDirPath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| thunderDriver, ok := storage.(*thunder.Thunder) | ||
| if !ok { | ||
| return fmt.Errorf("unsupported storage driver for offline download, only Thunder is supported") | ||
| } | ||
| ctx := context.Background() | ||
| err = thunderDriver.DeleteOfflineTasks(ctx, []string{task.GID}, false) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (t *Thunder) Status(task *tool.DownloadTask) (*tool.Status, error) { | ||
| storage, _, err := op.GetStorageAndActualPath(task.DstDirPath) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| thunderDriver, ok := storage.(*thunder.Thunder) | ||
| if !ok { | ||
| return nil, fmt.Errorf("unsupported storage driver for offline download, only Thunder is supported") | ||
| } | ||
| tasks, err := t.GetTasks(thunderDriver) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| s := &tool.Status{ | ||
| Progress: 0, | ||
| NewGID: "", | ||
| Completed: false, | ||
| Status: "the task has been deleted", | ||
| Err: nil, | ||
| } | ||
| for _, t := range tasks { | ||
| if t.ID == task.GID { | ||
| s.Progress = float64(t.Progress) | ||
| s.Status = t.Message | ||
| s.Completed = (t.Phase == "PHASE_TYPE_COMPLETE") | ||
| s.TotalBytes, err = strconv.ParseInt(t.FileSize, 10, 64) | ||
| if err != nil { | ||
| s.TotalBytes = 0 | ||
| } | ||
| if t.Phase == "PHASE_TYPE_ERROR" { | ||
| s.Err = errors.New(t.Message) | ||
| } | ||
| return s, nil | ||
| } | ||
| } | ||
| s.Err = fmt.Errorf("the task has been deleted") | ||
| return s, nil | ||
| } | ||
|
|
||
| func init() { | ||
| tool.Tools.Add(&Thunder{}) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package thunder | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| "github.com/Xhofe/go-cache" | ||
| "github.com/alist-org/alist/v3/drivers/thunder" | ||
| "github.com/alist-org/alist/v3/internal/op" | ||
| "github.com/alist-org/alist/v3/pkg/singleflight" | ||
| ) | ||
|
|
||
| var taskCache = cache.NewMemCache(cache.WithShards[[]thunder.OfflineTask](16)) | ||
| var taskG singleflight.Group[[]thunder.OfflineTask] | ||
|
|
||
| func (t *Thunder) GetTasks(thunderDriver *thunder.Thunder) ([]thunder.OfflineTask, error) { | ||
| key := op.Key(thunderDriver, "/drive/v1/task") | ||
| if !t.refreshTaskCache { | ||
| if tasks, ok := taskCache.Get(key); ok { | ||
| return tasks, nil | ||
| } | ||
| } | ||
| t.refreshTaskCache = false | ||
| tasks, err, _ := taskG.Do(key, func() ([]thunder.OfflineTask, error) { | ||
| ctx := context.Background() | ||
| tasks, err := thunderDriver.OfflineList(ctx, "") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // 添加缓存 10s | ||
| if len(tasks) > 0 { | ||
| taskCache.Set(key, tasks, cache.WithEx[[]thunder.OfflineTask](time.Second*10)) | ||
| } else { | ||
| taskCache.Del(key) | ||
| } | ||
| return tasks, nil | ||
| }) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return tasks, nil | ||
| } |
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