128 lines
3.5 KiB
Go
128 lines
3.5 KiB
Go
package core
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"os"
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"time"
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"github.com/celestix/gotgproto/ext"
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"github.com/gotd/td/tg"
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"github.com/krau/SaveAny-Bot/bot"
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"github.com/krau/SaveAny-Bot/common"
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"github.com/krau/SaveAny-Bot/config"
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"github.com/krau/SaveAny-Bot/logger"
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"github.com/krau/SaveAny-Bot/queue"
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"github.com/krau/SaveAny-Bot/storage"
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"github.com/krau/SaveAny-Bot/types"
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)
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func processPendingTask(task *types.Task) error {
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logger.L.Debugf("Start processing task: %s", task.String())
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os.MkdirAll(config.Cfg.Temp.BasePath, os.ModePerm)
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logger.L.Debugf("Start downloading file: %s", task.String())
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task.Ctx.(*ext.Context).EditMessage(task.ChatID, &tg.MessagesEditMessageRequest{
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Message: "开始下载文件...",
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ID: task.ReplyMessageID,
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})
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readCloser, err := NewTelegramReader(task.Ctx, bot.Client, task.File.Location, 0, task.File.FileSize-1, task.File.FileSize)
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if err != nil {
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return fmt.Errorf("Failed to create reader: %w", err)
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}
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defer readCloser.Close()
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dest, err := os.Create(common.GetCacheFilePath(task.FileName()))
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if err != nil {
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return fmt.Errorf("Failed to create file: %w", err)
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}
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logger.L.Debug("Created file: ", dest.Name())
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defer dest.Close()
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if _, err := io.CopyN(dest, readCloser, task.File.FileSize); err != nil {
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return fmt.Errorf("Failed to download file: %w", err)
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}
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defer func() {
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if config.Cfg.Temp.CacheTTL > 0 {
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common.RmFileAfter(dest.Name(), time.Duration(config.Cfg.Temp.CacheTTL)*time.Second)
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} else {
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if err := os.Remove(dest.Name()); err != nil {
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logger.L.Errorf("Failed to purge file: %s", err)
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}
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}
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}()
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if task.StoragePath == "" {
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task.StoragePath = task.File.FileName
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}
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task.Ctx.(*ext.Context).EditMessage(task.ChatID, &tg.MessagesEditMessageRequest{
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Message: "下载完成, 正在转存文件...",
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ID: task.ReplyMessageID,
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})
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if err := storage.Save(task.Storage, task.Ctx, dest.Name(), task.StoragePath); err != nil {
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return fmt.Errorf("Failed to save file: %w", err)
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}
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return nil
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}
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func worker(queue *queue.TaskQueue, semaphore chan struct{}) {
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for {
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semaphore <- struct{}{}
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task := queue.GetTask()
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logger.L.Debugf("Got task: %s", task.String())
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switch task.Status {
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case types.Pending:
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logger.L.Infof("Processing task: %s", task.String())
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if err := processPendingTask(&task); err != nil {
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logger.L.Errorf("Failed to do task: %s", err)
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task.Error = err
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if errors.Is(err, context.Canceled) {
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logger.L.Debugf("Task canceled: %s", task.String())
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task.Status = types.Canceled
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} else {
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task.Status = types.Failed
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}
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} else {
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task.Status = types.Succeeded
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}
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queue.AddTask(task)
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case types.Succeeded:
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logger.L.Infof("Task succeeded: %s", task.String())
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task.Ctx.(*ext.Context).EditMessage(task.ChatID, &tg.MessagesEditMessageRequest{
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Message: "文件保存成功",
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ID: task.ReplyMessageID,
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})
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case types.Failed:
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logger.L.Errorf("Task failed: %s", task.String())
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task.Ctx.(*ext.Context).EditMessage(task.ChatID, &tg.MessagesEditMessageRequest{
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Message: "文件保存失败",
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ID: task.ReplyMessageID,
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})
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case types.Canceled:
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logger.L.Infof("Task canceled: %s", task.String())
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default:
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logger.L.Errorf("Unknown task status: %s", task.Status)
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}
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<-semaphore
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logger.L.Debugf("Task done: %s", task.String())
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}
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}
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func Run() {
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logger.L.Info("Start processing tasks...")
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semaphore := make(chan struct{}, config.Cfg.Workers)
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for i := 0; i < config.Cfg.Workers; i++ {
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go worker(queue.Queue, semaphore)
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}
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}
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