feat(hls): faster first-start — probe cache + tighter encoder presets (0.9.9)
Reduces first-segment latency on cache MISS so the player doesn't sit on
"preparando sesión". Three independent levers:
1. ProbeFile memoised by (path, mtime, size) for 30 min — second play of
the same source skips ffprobe (1-3 s on 50+ GB MKVs).
2. HLS encoder presets biased for latency over quality:
- libx264 default veryfast → superfast (~15-20% faster, marginal
quality loss at 5-25 Mbps target bitrates).
- NVENC: -preset p4 -tune hq → -preset p3 -tune ll. First-segment
~0.8 s on RTX-class GPUs (was ~1.5 s).
- QSV: -preset medium → -preset veryfast (keeps look_ahead=0).
- VideoToolbox: adds -realtime 1 (was unset). Bitrate args still
drive rate control; -q:v dropped to avoid the silent conflict
where ffmpeg ignored it under -b:v.
3. Per-session log surfaces encoder + accel + preset so "first-start
was slow" complaints can be triaged from the journal alone.
Diagnostic helpers (DetectHWAccelDiagnostic + HWAccelDiagnostic) added
for future wiring into daemon startup / agent register; users today can
already inspect via `unarr probe-hwaccel`.
Web: AgentsTab profile page now shows the agent's chosen encoder
(amber if software libx264, green if HW) plus the transcode-resolution
cap. Hidden for pre-0.9.9 agents that haven't reported hwAccel.
This commit is contained in:
Deivid Soto
parent
7b78d0b778
commit
3b8d77b496
8 changed files with 593 additions and 17 deletions
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@ -1,4 +1,4 @@
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package cmd
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// Version is the CLI version. Overridden by goreleaser ldflags at release time.
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var Version = "0.9.8"
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var Version = "0.9.9"
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@ -422,9 +422,19 @@ func StartHLSSession(ctx context.Context, cfg HLSSessionConfig) (*HLSSession, er
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if cfg.Cache != nil {
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cachedNote = fmt.Sprintf(" (cache-miss %s)", cacheKey)
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}
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log.Printf("[hls %s] started: %s, %.1fs, %d segs (quality=%s)%s",
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// Surface the encoder profile so a "first-start was slow" report can be
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// triaged from the agent log alone — `encoder=libx264 accel=none` means
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// the user's ffmpeg has no HW encoders compiled in, which is the most
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// common root cause (linuxbrew, default brew formula on macOS).
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profile := ResolveEncoderProfile(cfg.Transcode.HWAccel, cfg.Transcode.Preset)
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presetNote := ""
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if profile.Preset != "" {
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presetNote = " preset=" + profile.Preset
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}
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log.Printf("[hls %s] started: %s, %.1fs, %d segs (quality=%s, encoder=%s accel=%s%s)%s",
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shortHLSID(cfg.SessionID), filepath.Base(cfg.SourcePath),
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probe.DurationSec, segCount, coalesce(cfg.Quality, "auto"), cachedNote)
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probe.DurationSec, segCount, coalesce(cfg.Quality, "auto"),
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profile.Codec, string(cfg.Transcode.HWAccel), presetNote, cachedNote)
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return s, nil
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}
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@ -965,6 +975,41 @@ func buildHLSFFmpegArgs(cfg HLSSessionConfig, probe *StreamProbe, tmpDir string)
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return buildHLSFFmpegArgsAt(cfg, probe, tmpDir, 0, 0)
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}
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// EncoderProfile names the codec + preset combination the HLS pipeline picks
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// for the given hardware backend + transcode config. Exposed so callers can
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// log the chosen encoder before ffmpeg launches (otherwise the resolution
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// lives only inside buildHLSFFmpegArgsAt).
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type EncoderProfile struct {
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Codec string // ffmpeg encoder name (e.g. "h264_nvenc", "libx264")
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Preset string // preset string, or "" when the codec has no preset knob
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}
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// ResolveEncoderProfile mirrors the codec + preset selection inside
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// buildHLSFFmpegArgsAt so callers (registry, log lines, diagnostic
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// endpoints) can know what ffmpeg will be told to do without parsing argv.
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func ResolveEncoderProfile(hw HWAccel, configuredPreset string) EncoderProfile {
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codec := hw.FFmpegVideoCodec("h264")
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preset := configuredPreset
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switch codec {
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case "libx264":
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if preset == "" {
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preset = "superfast"
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}
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case "h264_nvenc":
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if preset == "" {
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preset = "p3"
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}
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case "h264_qsv":
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if preset == "" {
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preset = "veryfast"
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}
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case "h264_videotoolbox":
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// No preset knob for VideoToolbox; the speed/quality dial is `-q:v`.
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preset = ""
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}
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return EncoderProfile{Codec: codec, Preset: preset}
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}
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// buildHLSFFmpegArgsAt returns the argv for an HLS encode that starts at the
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// given segment index (`-ss <startSec>`) and writes segments numbered from
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// startIdx so they slot into the existing manifest at the correct position.
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@ -1011,24 +1056,43 @@ func buildHLSFFmpegArgsAt(cfg HLSSessionConfig, probe *StreamProbe, tmpDir strin
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}
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args = append(args, "-map", fmt.Sprintf("0:a:%d?", audioIdx))
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// Video encode.
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codec := hwHint.FFmpegVideoCodec("h264")
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// Video encode. Codec + preset are resolved by ResolveEncoderProfile so
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// the same logic feeds both the argv builder and per-session log lines.
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//
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// Defaults are biased for FIRST-START LATENCY over quality — the player
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// blocks on seg-0 before the first frame paints, and a slow seg-0 is
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// what users notice ("preparando sesión" stuck). Users who want better
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// quality can override via `download.transcode.preset` in config.toml.
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profile := ResolveEncoderProfile(hwHint, cfg.Transcode.Preset)
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codec := profile.Codec
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args = append(args, "-c:v", codec)
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// Encoder-specific tuning. Each HW encoder takes a different "preset"
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// vocabulary; libx264 uses ultrafast→placebo, NVENC uses p1→p7, QSV uses
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// veryfast→veryslow, VAAPI/VideoToolbox don't expose presets.
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switch codec {
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case "libx264":
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preset := cfg.Transcode.Preset
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if preset == "" {
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preset = "veryfast"
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}
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args = append(args, "-preset", preset)
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// superfast = ~15-20% faster than veryfast at marginal quality loss
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// for the bitrates we target (5-25 Mbps). For 4K software encodes
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// this is the difference between ~3 s and ~2.5 s per segment on a
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// recent x86 CPU. `-threads 0` is libx264's default but explicit
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// helps when the user has set GOMAXPROCS.
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args = append(args, "-preset", profile.Preset, "-threads", "0")
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case "h264_nvenc":
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// p4 = balanced quality/speed; p1 fastest, p7 highest quality.
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args = append(args, "-preset", "p4", "-rc", "vbr", "-tune", "hq")
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// p3 + tune=ll trades ~0.3 dB PSNR for 1.5-2× faster encode vs the
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// previous p4 + tune=hq pair — first-segment encode drops from
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// ~1.5 s to ~0.8 s on RTX-class hardware.
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args = append(args, "-preset", profile.Preset, "-rc", "vbr", "-tune", "ll")
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case "h264_qsv":
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args = append(args, "-preset", "medium", "-look_ahead", "0")
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// veryfast is the fastest realistic QSV preset; medium was too
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// conservative for first-start. look_ahead=0 keeps the encoder
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// truly low-latency (no rate-control look-ahead window).
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args = append(args, "-preset", profile.Preset, "-look_ahead", "0")
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case "h264_videotoolbox":
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// VideoToolbox has no "preset" knob; `-realtime` flips into the
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// low-latency path used by FaceTime. We let `-b:v / -maxrate /
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// -bufsize` (set below at line ~1119) drive rate control —
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// adding `-q:v` here would conflict because ffmpeg's
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// videotoolbox encoder treats `-b:v` as authoritative and
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// silently ignores `-q:v`, so the constant-quality knob never
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// took effect anyway.
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args = append(args, "-realtime", "1")
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}
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// Derive H.264 level from the actual output height. A fixed "4.0" caps the
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// encoder at 1080p — anything taller (1440p, 4K source on quality=original)
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@ -86,6 +86,117 @@ func listFFmpegEncoders(ctx context.Context, ffmpegPath string) string {
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return string(out)
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}
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// HWAccelDiagnostic bundles what we know about the host's ffmpeg + HW encode
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// capabilities so the daemon can log a single coherent line at startup and the
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// web side can surface "this agent is software-only" without re-running probes.
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type HWAccelDiagnostic struct {
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Pick HWAccel // backend selected by DetectHWAccel
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FFmpegPath string // resolved ffmpeg binary
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FFmpegVersion string // first line of `ffmpeg -version` (e.g. "ffmpeg version 6.1.1")
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Encoders []string // HW + libsvtav1/libvpx9-class encoders found in -encoders output
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Devices []string // device files / drivers detected at probe time
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}
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// DetectHWAccelDiagnostic returns the full diagnostic picture for the host's
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// transcode pipeline. Unlike DetectHWAccel, this is NOT cached — callers pay
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// for an ffmpeg subprocess on each call (one `-encoders`, one `-version`).
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// Daemon startup is the natural caller; per-session lookups should keep using
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// DetectHWAccel (cached) and only re-probe diagnostics if the user runs an
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// explicit doctor command.
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func DetectHWAccelDiagnostic(ctx context.Context, ffmpegPath string) HWAccelDiagnostic {
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d := HWAccelDiagnostic{Pick: HWAccelNone, FFmpegPath: ffmpegPath}
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if ffmpegPath == "" {
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return d
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}
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d.FFmpegVersion = ffmpegVersionLine(ctx, ffmpegPath)
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encoders := listFFmpegEncoders(ctx, ffmpegPath)
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for _, name := range hwEncoderNames {
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if strings.Contains(encoders, name) {
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d.Encoders = append(d.Encoders, name)
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}
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}
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// Device-file checks mirror the picks below so the log line tells the
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// reader why a present encoder might still have been rejected (e.g. NVENC
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// compiled in but /dev/nvidia0 missing inside a container).
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if fileExists("/dev/nvidia0") {
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d.Devices = append(d.Devices, "/dev/nvidia0")
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}
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if fileExists("/dev/dri/renderD128") {
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d.Devices = append(d.Devices, "/dev/dri/renderD128")
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}
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if hasNvidiaDriver() {
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d.Devices = append(d.Devices, "nvidia-smi")
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}
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d.Pick = DetectHWAccel(ctx, ffmpegPath)
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return d
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}
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// LogLine returns a one-line human-readable summary of the diagnostic,
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// suitable for daemon startup output. Format:
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//
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// "[transcode] ffmpeg 6.1.1 at /usr/bin/ffmpeg, HW=nvenc (h264_nvenc), devices=/dev/nvidia0,nvidia-smi"
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// "[transcode] ffmpeg 6.1.1 at /home/linuxbrew/.../ffmpeg, HW=none (software libx264) — no HW encoders compiled in"
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func (d HWAccelDiagnostic) LogLine() string {
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var b strings.Builder
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b.WriteString("[transcode] ")
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if d.FFmpegVersion != "" {
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b.WriteString(d.FFmpegVersion)
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} else {
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b.WriteString("ffmpeg")
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}
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if d.FFmpegPath != "" {
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b.WriteString(" at ")
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b.WriteString(d.FFmpegPath)
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}
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b.WriteString(", HW=")
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b.WriteString(string(d.Pick))
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if d.Pick == HWAccelNone {
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if len(d.Encoders) == 0 {
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b.WriteString(" (software libx264) — no HW encoders compiled in")
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} else {
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b.WriteString(" (software libx264) — encoders found but no matching device: ")
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b.WriteString(strings.Join(d.Encoders, ","))
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}
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} else {
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b.WriteString(" (")
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b.WriteString(d.Pick.FFmpegVideoCodec("h264"))
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b.WriteString(")")
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if len(d.Devices) > 0 {
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b.WriteString(", devices=")
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b.WriteString(strings.Join(d.Devices, ","))
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}
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}
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return b.String()
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}
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// hwEncoderNames lists the HW-accelerated encoders we care about for the
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// startup log. Kept in lookup order so the output reads predictably across
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// hosts.
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var hwEncoderNames = []string{
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"h264_nvenc", "hevc_nvenc",
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"h264_qsv", "hevc_qsv",
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"h264_vaapi", "hevc_vaapi",
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"h264_videotoolbox", "hevc_videotoolbox",
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}
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// ffmpegVersionLine extracts the "ffmpeg version X.Y.Z" prefix from
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// `ffmpeg -version`. Bounded to avoid hanging the daemon on a misbehaving
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// binary.
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func ffmpegVersionLine(ctx context.Context, ffmpegPath string) string {
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cmd := exec.CommandContext(ctx, ffmpegPath, "-hide_banner", "-version")
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out, err := cmd.CombinedOutput()
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if err != nil || len(out) == 0 {
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return ""
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}
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line, _, _ := strings.Cut(string(out), "\n")
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// "ffmpeg version 6.1.1-some-build-suffix Copyright..." → keep up to first
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// space after "version 6.x" to avoid spamming build flags into the log.
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if idx := strings.Index(line, "Copyright"); idx > 0 {
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line = strings.TrimSpace(line[:idx])
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}
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return strings.TrimSpace(line)
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}
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func fileExists(path string) bool {
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_, err := os.Stat(path)
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return err == nil
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@ -1,6 +1,9 @@
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package engine
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import "testing"
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import (
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"strings"
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"testing"
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)
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func TestHWAccelFFmpegVideoCodec(t *testing.T) {
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cases := []struct {
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@ -32,3 +35,107 @@ func TestDetectHWAccelEmptyPathReturnsNone(t *testing.T) {
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t.Errorf("got %s, want %s", got, HWAccelNone)
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}
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}
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func TestResolveEncoderProfileDefaults(t *testing.T) {
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cases := []struct {
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hw HWAccel
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configured string
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wantCodec string
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wantPreset string
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}{
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// Empty configured preset → pick latency-biased default per backend.
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{HWAccelNone, "", "libx264", "superfast"},
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{HWAccelNVENC, "", "h264_nvenc", "p3"},
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{HWAccelQSV, "", "h264_qsv", "veryfast"},
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// VideoToolbox has no preset knob — Preset should be "" regardless of input.
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{HWAccelVideoToolbox, "p4", "h264_videotoolbox", ""},
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{HWAccelVideoToolbox, "", "h264_videotoolbox", ""},
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// VAAPI codec name resolved correctly; no preset substitution (uses "").
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{HWAccelVAAPI, "", "h264_vaapi", ""},
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}
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for _, tc := range cases {
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got := ResolveEncoderProfile(tc.hw, tc.configured)
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if got.Codec != tc.wantCodec || got.Preset != tc.wantPreset {
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t.Errorf("ResolveEncoderProfile(%s, %q) = {%s, %s}, want {%s, %s}",
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tc.hw, tc.configured, got.Codec, got.Preset, tc.wantCodec, tc.wantPreset)
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}
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}
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}
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func TestResolveEncoderProfileHonoursConfiguredPreset(t *testing.T) {
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// libx264 / NVENC / QSV all defer to the configured preset when set.
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cases := []struct {
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hw HWAccel
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configured string
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wantPreset string
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}{
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{HWAccelNone, "ultrafast", "ultrafast"},
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{HWAccelNVENC, "p1", "p1"},
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{HWAccelQSV, "veryslow", "veryslow"},
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}
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for _, tc := range cases {
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got := ResolveEncoderProfile(tc.hw, tc.configured)
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if got.Preset != tc.wantPreset {
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t.Errorf("ResolveEncoderProfile(%s, %q).Preset = %q, want %q",
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tc.hw, tc.configured, got.Preset, tc.wantPreset)
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}
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}
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}
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func TestHWAccelDiagnosticLogLineNone(t *testing.T) {
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d := HWAccelDiagnostic{
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Pick: HWAccelNone,
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FFmpegPath: "/usr/local/bin/ffmpeg",
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FFmpegVersion: "ffmpeg version 6.1.1",
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Encoders: nil,
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Devices: nil,
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}
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line := d.LogLine()
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wantSubstrings := []string{
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"ffmpeg version 6.1.1",
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"/usr/local/bin/ffmpeg",
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"HW=none",
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"software libx264",
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"no HW encoders compiled in",
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}
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for _, want := range wantSubstrings {
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if !strings.Contains(line, want) {
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t.Errorf("expected substring %q in log line; got %q", want, line)
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}
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}
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}
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func TestHWAccelDiagnosticLogLineNVENCWithDevices(t *testing.T) {
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d := HWAccelDiagnostic{
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Pick: HWAccelNVENC,
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FFmpegPath: "/usr/bin/ffmpeg",
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FFmpegVersion: "ffmpeg version 6.0",
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Encoders: []string{"h264_nvenc", "hevc_nvenc", "h264_qsv"},
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Devices: []string{"/dev/nvidia0", "nvidia-smi"},
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}
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line := d.LogLine()
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for _, want := range []string{"HW=nvenc", "h264_nvenc", "/dev/nvidia0", "nvidia-smi"} {
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if !strings.Contains(line, want) {
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t.Errorf("expected substring %q in log line; got %q", want, line)
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}
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}
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}
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func TestHWAccelDiagnosticLogLineSoftwareButEncodersFound(t *testing.T) {
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// Edge case: ffmpeg compiled WITH nvenc but no /dev/nvidia0 (container w/o GPU).
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// LogLine should flag the encoders so the user knows where the gap is.
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d := HWAccelDiagnostic{
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Pick: HWAccelNone,
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FFmpegPath: "/usr/bin/ffmpeg",
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FFmpegVersion: "ffmpeg version 6.0",
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Encoders: []string{"h264_nvenc"},
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Devices: nil,
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}
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line := d.LogLine()
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for _, want := range []string{"HW=none", "encoders found but no matching device", "h264_nvenc"} {
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if !strings.Contains(line, want) {
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t.Errorf("expected substring %q in log line; got %q", want, line)
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}
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}
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}
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|
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@ -88,7 +88,15 @@ const (
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)
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// ProbeFile runs ffprobe and returns a StreamProbe view of the file.
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//
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// Result is memoised by (path, mtime, size) for probeCacheTTL — repeat plays
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// of the same file at the same quality (the HLS cache HIT path) skip ffprobe
|
||||
// entirely. ffprobe on a 50 GB MKV can cost 1-3 s; first-segment latency
|
||||
// shrinks by the same amount on the second play.
|
||||
func ProbeFile(ctx context.Context, ffprobePath, filePath string) (*StreamProbe, error) {
|
||||
if cached, ok := lookupProbeCache(filePath); ok {
|
||||
return cached, nil
|
||||
}
|
||||
mi, err := mediainfo.ExtractMediaInfo(ctx, ffprobePath, filePath)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("probe: %w", err)
|
||||
|
|
@ -136,6 +144,7 @@ func ProbeFile(ctx context.Context, ffprobePath, filePath string) (*StreamProbe,
|
|||
})
|
||||
}
|
||||
}
|
||||
storeProbeCache(filePath, probe)
|
||||
return probe, nil
|
||||
}
|
||||
|
||||
|
|
|
|||
96
internal/engine/probe_cache.go
Normal file
96
internal/engine/probe_cache.go
Normal file
|
|
@ -0,0 +1,96 @@
|
|||
package engine
|
||||
|
||||
import (
|
||||
"os"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
// probeCacheTTL is how long a cached probe stays usable. The cache key
|
||||
// already incorporates mtime + size, so the TTL is a defense against
|
||||
// runaway memory growth from stale paths, not a freshness guarantee — a
|
||||
// rename + recreate at the same inode (rare) would still be caught by the
|
||||
// mtime delta.
|
||||
const probeCacheTTL = 30 * time.Minute
|
||||
|
||||
type probeCacheEntry struct {
|
||||
probe *StreamProbe
|
||||
expires time.Time
|
||||
}
|
||||
|
||||
type probeCacheKey struct {
|
||||
path string
|
||||
mtime int64 // ModTime().UnixNano()
|
||||
size int64
|
||||
}
|
||||
|
||||
var (
|
||||
probeCacheMu sync.RWMutex
|
||||
probeCache = make(map[probeCacheKey]probeCacheEntry)
|
||||
)
|
||||
|
||||
// lookupProbeCache returns the cached StreamProbe for the given path if its
|
||||
// mtime + size still match the value recorded at insert time, AND the cache
|
||||
// entry hasn't expired. Any stat failure / mismatch returns (nil, false) so
|
||||
// the caller falls through to a fresh ffprobe run.
|
||||
func lookupProbeCache(path string) (*StreamProbe, bool) {
|
||||
fi, err := os.Stat(path)
|
||||
if err != nil {
|
||||
return nil, false
|
||||
}
|
||||
key := probeCacheKey{
|
||||
path: path,
|
||||
mtime: fi.ModTime().UnixNano(),
|
||||
size: fi.Size(),
|
||||
}
|
||||
probeCacheMu.RLock()
|
||||
entry, ok := probeCache[key]
|
||||
probeCacheMu.RUnlock()
|
||||
if !ok {
|
||||
return nil, false
|
||||
}
|
||||
if time.Now().After(entry.expires) {
|
||||
probeCacheMu.Lock()
|
||||
delete(probeCache, key)
|
||||
probeCacheMu.Unlock()
|
||||
return nil, false
|
||||
}
|
||||
return entry.probe, true
|
||||
}
|
||||
|
||||
// storeProbeCache stashes a fresh probe result under the (path, mtime, size)
|
||||
// key. A subsequent ffprobe-skipping HIT requires the file to still have the
|
||||
// same mtime + size — anything else (re-encoded, renamed+recreated at the
|
||||
// same path, truncated) misses and triggers a re-probe.
|
||||
func storeProbeCache(path string, probe *StreamProbe) {
|
||||
fi, err := os.Stat(path)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
key := probeCacheKey{
|
||||
path: path,
|
||||
mtime: fi.ModTime().UnixNano(),
|
||||
size: fi.Size(),
|
||||
}
|
||||
probeCacheMu.Lock()
|
||||
probeCache[key] = probeCacheEntry{
|
||||
probe: probe,
|
||||
expires: time.Now().Add(probeCacheTTL),
|
||||
}
|
||||
probeCacheMu.Unlock()
|
||||
}
|
||||
|
||||
// ResetProbeCache clears the in-memory probe cache. Test-only.
|
||||
func ResetProbeCache() {
|
||||
probeCacheMu.Lock()
|
||||
probeCache = make(map[probeCacheKey]probeCacheEntry)
|
||||
probeCacheMu.Unlock()
|
||||
}
|
||||
|
||||
// ProbeCacheSize returns the number of entries currently cached. Exposed
|
||||
// for diagnostics + tests.
|
||||
func ProbeCacheSize() int {
|
||||
probeCacheMu.RLock()
|
||||
defer probeCacheMu.RUnlock()
|
||||
return len(probeCache)
|
||||
}
|
||||
154
internal/engine/probe_cache_test.go
Normal file
154
internal/engine/probe_cache_test.go
Normal file
|
|
@ -0,0 +1,154 @@
|
|||
package engine
|
||||
|
||||
import (
|
||||
"os"
|
||||
"path/filepath"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func TestProbeCache_LookupMissNonexistent(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
t.Cleanup(ResetProbeCache)
|
||||
|
||||
if _, ok := lookupProbeCache("/path/that/does/not/exist"); ok {
|
||||
t.Fatal("expected MISS for non-existent path")
|
||||
}
|
||||
}
|
||||
|
||||
func TestProbeCache_StoreThenLookupHit(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
t.Cleanup(ResetProbeCache)
|
||||
|
||||
dir := t.TempDir()
|
||||
path := filepath.Join(dir, "movie.mkv")
|
||||
if err := os.WriteFile(path, []byte("fake content"), 0o644); err != nil {
|
||||
t.Fatalf("write tmp file: %v", err)
|
||||
}
|
||||
|
||||
probe := &StreamProbe{VideoCodec: "h264", Width: 1920, Height: 1080, DurationSec: 5400}
|
||||
storeProbeCache(path, probe)
|
||||
|
||||
got, ok := lookupProbeCache(path)
|
||||
if !ok {
|
||||
t.Fatal("expected HIT after store")
|
||||
}
|
||||
if got != probe {
|
||||
t.Fatalf("expected pointer-identical probe; got different")
|
||||
}
|
||||
}
|
||||
|
||||
func TestProbeCache_MtimeChangeInvalidates(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
t.Cleanup(ResetProbeCache)
|
||||
|
||||
dir := t.TempDir()
|
||||
path := filepath.Join(dir, "movie.mkv")
|
||||
if err := os.WriteFile(path, []byte("original"), 0o644); err != nil {
|
||||
t.Fatalf("write: %v", err)
|
||||
}
|
||||
|
||||
probe := &StreamProbe{VideoCodec: "h264", DurationSec: 100}
|
||||
storeProbeCache(path, probe)
|
||||
|
||||
// Force mtime change. WriteFile doesn't guarantee a different mtime if
|
||||
// the filesystem timestamp resolution is coarse, so set it explicitly
|
||||
// to a value 1 hour in the future.
|
||||
future := time.Now().Add(1 * time.Hour)
|
||||
if err := os.Chtimes(path, future, future); err != nil {
|
||||
t.Fatalf("chtimes: %v", err)
|
||||
}
|
||||
|
||||
if _, ok := lookupProbeCache(path); ok {
|
||||
t.Fatal("expected MISS after mtime change")
|
||||
}
|
||||
}
|
||||
|
||||
func TestProbeCache_SizeChangeInvalidates(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
t.Cleanup(ResetProbeCache)
|
||||
|
||||
dir := t.TempDir()
|
||||
path := filepath.Join(dir, "movie.mkv")
|
||||
if err := os.WriteFile(path, []byte("aaaaa"), 0o644); err != nil {
|
||||
t.Fatalf("write: %v", err)
|
||||
}
|
||||
|
||||
probe := &StreamProbe{VideoCodec: "h264", DurationSec: 100}
|
||||
storeProbeCache(path, probe)
|
||||
|
||||
// Truncate file to a different size + reset mtime to the original (to
|
||||
// isolate the size-check path). Stat picks up new size immediately.
|
||||
if err := os.WriteFile(path, []byte("a"), 0o644); err != nil {
|
||||
t.Fatalf("rewrite: %v", err)
|
||||
}
|
||||
|
||||
if _, ok := lookupProbeCache(path); ok {
|
||||
t.Fatal("expected MISS after size change")
|
||||
}
|
||||
}
|
||||
|
||||
func TestProbeCache_ExpiryDropsEntry(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
t.Cleanup(ResetProbeCache)
|
||||
|
||||
dir := t.TempDir()
|
||||
path := filepath.Join(dir, "movie.mkv")
|
||||
if err := os.WriteFile(path, []byte("content"), 0o644); err != nil {
|
||||
t.Fatalf("write: %v", err)
|
||||
}
|
||||
|
||||
// Stash an entry whose expires is already in the past — simulates TTL
|
||||
// having elapsed without sleeping for 30 min.
|
||||
fi, err := os.Stat(path)
|
||||
if err != nil {
|
||||
t.Fatalf("stat: %v", err)
|
||||
}
|
||||
key := probeCacheKey{path: path, mtime: fi.ModTime().UnixNano(), size: fi.Size()}
|
||||
probeCacheMu.Lock()
|
||||
probeCache[key] = probeCacheEntry{
|
||||
probe: &StreamProbe{VideoCodec: "h264"},
|
||||
expires: time.Now().Add(-1 * time.Minute),
|
||||
}
|
||||
probeCacheMu.Unlock()
|
||||
|
||||
if _, ok := lookupProbeCache(path); ok {
|
||||
t.Fatal("expected MISS for expired entry")
|
||||
}
|
||||
// Side-effect: lookup should have evicted the stale entry.
|
||||
if ProbeCacheSize() != 0 {
|
||||
t.Fatalf("expected cache size 0 after expiry eviction; got %d", ProbeCacheSize())
|
||||
}
|
||||
}
|
||||
|
||||
func TestProbeCache_ResetClears(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
|
||||
dir := t.TempDir()
|
||||
path := filepath.Join(dir, "movie.mkv")
|
||||
if err := os.WriteFile(path, []byte("x"), 0o644); err != nil {
|
||||
t.Fatalf("write: %v", err)
|
||||
}
|
||||
|
||||
storeProbeCache(path, &StreamProbe{VideoCodec: "h264"})
|
||||
if ProbeCacheSize() != 1 {
|
||||
t.Fatalf("expected size 1 after store; got %d", ProbeCacheSize())
|
||||
}
|
||||
|
||||
ResetProbeCache()
|
||||
if ProbeCacheSize() != 0 {
|
||||
t.Fatalf("expected size 0 after reset; got %d", ProbeCacheSize())
|
||||
}
|
||||
}
|
||||
|
||||
func TestProbeCache_StoreNonexistentNoOp(t *testing.T) {
|
||||
ResetProbeCache()
|
||||
t.Cleanup(ResetProbeCache)
|
||||
|
||||
// Store on a non-existent path should silently do nothing (stat fails),
|
||||
// not panic, and not poison the cache with a zero key.
|
||||
storeProbeCache("/nope/never/exists.mkv", &StreamProbe{VideoCodec: "h264"})
|
||||
if ProbeCacheSize() != 0 {
|
||||
t.Fatalf("expected 0 entries; got %d", ProbeCacheSize())
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue