124 lines
2.5 KiB
Go
124 lines
2.5 KiB
Go
package upload
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import (
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"context"
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"os"
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"time"
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)
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func (m *Manager) Pause(_ context.Context, taskID string) (*Task, bool) {
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m.mu.Lock()
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st, ok := m.tasks[taskID]
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if !ok {
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m.mu.Unlock()
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return nil, false
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}
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if st.Status != StatusPending && st.Status != StatusRunning {
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t := m.snapshot(st)
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m.mu.Unlock()
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return t, true
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}
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st.cancelMode = "pause"
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st.Status = StatusPaused
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st.SpeedBytesPerSecond = 0
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st.Message = "上传已暂停"
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st.Error = ""
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st.UpdatedAt = unixFloat(time.Now())
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cancel := st.cancel
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snap := st
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m.mu.Unlock()
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if cancel != nil {
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cancel()
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}
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m.runCond.Broadcast()
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m.persistTask(snap)
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m.broadcast()
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return m.Get(context.Background(), taskID)
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}
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func (m *Manager) Resume(ctx context.Context, taskID string) (*Task, bool) {
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m.mu.Lock()
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st, ok := m.tasks[taskID]
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if !ok {
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m.mu.Unlock()
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return nil, false
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}
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if st.Status != StatusPaused && st.Status != StatusFailed && st.Status != StatusCanceled {
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t := m.snapshot(st)
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m.mu.Unlock()
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return t, true
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}
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done := st.runDone
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m.mu.Unlock()
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if done != nil {
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select {
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case <-done:
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case <-ctx.Done():
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return m.Get(context.Background(), taskID)
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}
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}
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m.mu.Lock()
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st, ok = m.tasks[taskID]
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if !ok {
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m.mu.Unlock()
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return nil, false
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}
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if st.Status != StatusPaused && st.Status != StatusFailed && st.Status != StatusCanceled {
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t := m.snapshot(st)
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m.mu.Unlock()
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return t, true
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}
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if st.localPath == "" {
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st.Status = StatusFailed
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st.Message = "上传失败"
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st.Error = "本地临时文件不存在，无法继续上传"
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st.UpdatedAt = unixFloat(time.Now())
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snap := st
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m.mu.Unlock()
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m.persistTask(snap)
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m.broadcast()
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return snapshotCopy(snap), true
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}
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if _, err := os.Stat(st.localPath); err != nil {
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st.Status = StatusFailed
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st.Message = "上传失败"
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st.Error = "本地临时文件不存在，无法继续上传"
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st.UpdatedAt = unixFloat(time.Now())
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snap := st
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m.mu.Unlock()
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m.persistTask(snap)
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m.broadcast()
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return snapshotCopy(snap), true
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}
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m.queueOrder++
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st.QueueOrder = m.queueOrder
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st.Status = StatusPending
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st.Error = ""
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st.Result = nil
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st.cancelMode = ""
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st.runDone = make(chan struct{})
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progress, uploaded := resumedProgress(st)
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if len(st.resumeData) > 0 {
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st.Progress = progress
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st.UploadedBytes = uploaded
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st.Message = "准备继续上传"
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} else {
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st.Progress = 0
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st.UploadedBytes = 0
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st.Message = "等待上传"
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}
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snap := st
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task := m.snapshot(st)
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m.mu.Unlock()
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m.persistTask(snap)
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go m.runTask(taskID)
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m.broadcast()
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return task, true
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}
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func snapshotCopy(st *taskState) *Task {
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t := st.Task
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return &t
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}
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