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https://github.com/Awuqing/BackupX.git
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1. 失败自动重试：rclone Pacer 指数退避，默认 10 次底层 HTTP 重试 2. 带宽限制：配置 bandwidth_limit + Settings 运行时可调 3. 上传实时进度：progressReader + LogHub SSE 推送字节级进度/速率 4. 存储空间查询：StorageAbout 可选接口，GetUsage 返回远端真实空间 5. 全 rclone 后端：backend/all 引入 70+ 后端，新增 rclone 存储类型， API 驱动的可搜索后端选择器 + 动态配置表单
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package service
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import (
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"io"
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"sync/atomic"
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"time"
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)
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// progressCallback 在每次读取时被调用，报告已读字节数和估算速率。
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type progressCallback func(bytesRead int64, speedBps float64)
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// progressReader 包装 io.Reader，定期通过回调报告传输进度。
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type progressReader struct {
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reader io.Reader
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total int64
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read atomic.Int64
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callback progressCallback
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startTime time.Time
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lastCall time.Time
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interval time.Duration
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}
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func newProgressReader(reader io.Reader, total int64, callback progressCallback) *progressReader {
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now := time.Now()
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return &progressReader{
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reader: reader,
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total: total,
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callback: callback,
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startTime: now,
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lastCall: now,
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interval: 500 * time.Millisecond,
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}
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}
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func (r *progressReader) Read(p []byte) (int, error) {
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n, err := r.reader.Read(p)
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if n > 0 {
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current := r.read.Add(int64(n))
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now := time.Now()
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isFinal := err == io.EOF || (r.total > 0 && current >= r.total)
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if isFinal || now.Sub(r.lastCall) >= r.interval {
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r.lastCall = now
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elapsed := now.Sub(r.startTime).Seconds()
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speed := float64(0)
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if elapsed > 0 {
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speed = float64(current) / elapsed
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}
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r.callback(current, speed)
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}
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}
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return n, err
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}
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