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fix(docker): three streaming/reliability bugs found in live docker test

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funnel: urlPattern matched api.trycloudflare.com before the real quick-tunnel
URL. Cloudflared logs the control-plane endpoint early, so the agent was
advertising a dead URL. Tighten regex to require at least one hyphen — quick
tunnels are always multi-word (e.g. make-appointments-negotiation-blacks).
Covers with funnel_test.go regression test.

download(oneshot): progress reporter called /api/internal/agent/status with a
synthetic "oneshot-<hash>" task ID that is not a UUID, causing the server to
return 400 every 5 s for the entire download. Pass nil client to
NewProgressReporter for one-shot mode; flush/ReportFinal are no-ops when
reporter == nil so terminal output continues unchanged.

torrent: piece-completion SQLite DB (anacrolix) was created inside the download
dir (DataDir). On NFS/SMB mounts SQLite file locking times out, emitting a
warning and falling back to an ephemeral in-memory DB. Add PieceCompletionDir
to TorrentConfig; the daemon now passes config.DataDir() (agent state dir,
always local) so the DB stays off the network mount. One-shot download leaves
the field empty → harmless in-memory fallback as before.
This commit is contained in:
Deivid Soto 2026-05-30 08:59:33 +02:00
parent 16cc0a3033
commit 75e191f86b
6 changed files with 102 additions and 21 deletions
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25
internal/engine/torrent.go
View file

@ -61,7 +61,12 @@ var defaultTrackers = []string{
// TorrentConfig holds settings for the BitTorrent downloader.
type TorrentConfig struct {
DataDir string
DataDir string
// PieceCompletionDir, when non-empty, stores the piece-completion SQLite DB
// in this directory instead of DataDir. Use the agent's local state dir
// (not the download dir) so the DB never lands on NFS/SMB volumes where
// SQLite locking times out.
PieceCompletionDir string
MetadataTimeout time.Duration // how long to wait for torrent metadata (default 15m, 0 = unlimited)
StallTimeout time.Duration // no progress during download for this long = stall (default 10m)
MaxTimeout time.Duration // absolute maximum per torrent (default 0 = unlimited)
@ -113,7 +118,23 @@ func NewTorrentDownloader(cfg TorrentConfig) (*TorrentDownloader, error) {
// Storage: mmap instead of default file backend.
// The library author notes file storage has "very high system overhead".
// mmap improves I/O throughput and piece verification speed significantly.
tcfg.DefaultStorage = storage.NewMMap(cfg.DataDir)
//
// When PieceCompletionDir is set (daemon always passes the agent state dir),
// keep the piece-completion SQLite DB off the download dir so it never lands
// on NFS/SMB where SQLite's file locking times out and emits a warning.
if cfg.PieceCompletionDir != "" {
if mkErr := os.MkdirAll(cfg.PieceCompletionDir, 0o755); mkErr != nil {
log.Printf("[torrent] piece-completion dir create failed (%v), DB stays in download dir", mkErr)
tcfg.DefaultStorage = storage.NewMMap(cfg.DataDir)
} else if pc, pcErr := storage.NewDefaultPieceCompletionForDir(cfg.PieceCompletionDir); pcErr != nil {
log.Printf("[torrent] piece-completion db in %q failed (%v), falling back to download dir", cfg.PieceCompletionDir, pcErr)
tcfg.DefaultStorage = storage.NewMMap(cfg.DataDir)
} else {
tcfg.DefaultStorage = storage.NewMMapWithCompletion(cfg.DataDir, pc)
}
} else {
tcfg.DefaultStorage = storage.NewMMap(cfg.DataDir)
}
// Fixed port for incoming peer connections (enables UPnP port mapping).
// With ListenPort=0, only ~30% of peers can connect to us.