feat(httpapi): harden control plane and speed up prefix refresh
Очередь job получила lease и fencing, телеметрия и прогресс deploy сохраняются, ревизия пишет manifest входов. Обновление префиксов не переписывает неизменённый снимок, большие наборы идут через COPY, а устаревшая ревизия не попадает в deploy. Бандл ноды кэшируется, prune и постановка job больше не держат горячий путь. Co-authored-by: Cursor <cursoragent@cursor.com>
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package pipeline
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import (
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"errors"
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"io"
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)
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const cdnBodyLimit = 8 << 20
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// ErrCDNBodyTooLarge reports a CDN response larger than the 8 MiB decoded-body limit.
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var ErrCDNBodyTooLarge = errors.New("pipeline: cdn response body exceeds 8 MiB")
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type limitedCDNBody struct {
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io.ReadCloser
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remaining int64
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}
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func (b *limitedCDNBody) Read(p []byte) (int, error) {
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if len(p) == 0 {
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return 0, nil
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}
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if b.remaining == 0 {
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var one [1]byte
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n, err := b.ReadCloser.Read(one[:])
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if n > 0 {
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return 0, ErrCDNBodyTooLarge
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}
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return 0, err
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}
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if int64(len(p)) > b.remaining {
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p = p[:int(b.remaining)]
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}
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n, err := b.ReadCloser.Read(p)
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b.remaining -= int64(n)
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return n, err
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}
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// ReadCDNBody reads a CDN response and rejects decoded bodies above 8 MiB.
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// The extra byte distinguishes an exact-limit response from a truncated one.
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func ReadCDNBody(body io.Reader) ([]byte, error) {
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data, err := io.ReadAll(io.LimitReader(body, cdnBodyLimit+1))
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if err != nil {
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return nil, err
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}
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if len(data) > cdnBodyLimit {
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return nil, ErrCDNBodyTooLarge
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}
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return data, nil
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}
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