Files
alembic/pipeline/lib/prep-audio.sh
T
andrew fa86e992ad Robustness: crash-safe migrations, stale-run sweep, optional prep tools; branded 404
- init_db applies each schema file with executescript (semicolons in triggers
  and string literals no longer break it) and records schema_version itself
  after each file, so a forgotten in-file bump can't re-run an ALTER and crash
  startup. Re-running is a no-op.
- On startup, sweep any job_runs left in 'running' (killed by a restart) to
  'interrupted' so the UI/history don't show a run stuck running forever.
- prep-audio.sh skips loudgain and cue_file cleanly when they aren't installed
  (they aren't in the base image) instead of failing on a missing binary and
  logging errors; pipeline-status.sh routes syslog through a guard so a missing
  `logger` doesn't spew into the job log.
- Add a branded 404 page (rendered to static HTML, no external runtime) via a
  custom exception handler that leaves all other responses, including the login
  redirect, untouched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-09 17:32:26 -06:00

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#!/bin/bash
# ${PIPELINE_DIR:-/app/pipeline}/lib/prep-audio.sh
#
# Shared helper sourced by run-playlist.sh and import-track.sh.
# Pre-tags newly-arrived audio with ReplayGain (loudgain, track-mode) and
# Liquidsoap autocue tags (cue_file from Moonbase59/autocue) before beets
# ingests them, so AzuraCast sees fully-prepped files the moment they land
# in /music.
#
# Usage: prep_audio <scan_dir> <log_file>
# Returns: number of files processed (via stdout)
prep_audio() {
local scan_dir="$1"
local log="$2"
local files=()
while IFS= read -r -d '' f; do
files+=("$f")
done < <(find "$scan_dir" -type f \
\( -iname "*.flac" -o -iname "*.mp3" -o -iname "*.m4a" \
-o -iname "*.ogg" -o -iname "*.opus" \) -print0)
if [[ ${#files[@]} -eq 0 ]]; then
echo 0
return 0
fi
# loudgain (ReplayGain) and cue_file (Liquidsoap autocue) are optional. They
# are not in the base image, so only run them if present -- otherwise skip
# cleanly with a note instead of failing on a missing binary. Install them in
# the image if you want ReplayGain/autocue tags written at prep time.
if command -v loudgain >/dev/null 2>&1; then
echo "[prep-audio] loudgain (track-mode RG, clip-safe) on ${#files[@]} file(s)" >>"$log"
# -q quiet, -k lower track gain to avoid clipping >-1 dBFS,
# -s e write extended ReplayGain2 + R128 tags, -I 4 ID3v2.4 for MP3.
# No -a, so each file gets its own track gain (track-mode).
if ! loudgain -q -k -s e -I 4 "${files[@]}" >>"$log" 2>&1; then
echo "[prep-audio] loudgain returned non-zero (see log)" >>"$log"
fi
else
echo "[prep-audio] loudgain not installed, skipping ReplayGain" >>"$log"
fi
if command -v cue_file >/dev/null 2>&1; then
echo "[prep-audio] cue_file (autocue liq_* tags) on ${#files[@]} file(s)" >>"$log"
# -w write tags into file, -k true-peak clipping prevention.
# Skips files that already have liq_cue_file=true (use -f to force).
local failed=0
for f in "${files[@]}"; do
if ! cue_file -w -k "$f" >>"$log" 2>&1; then
echo "[prep-audio] cue_file failed on $f" >>"$log"
failed=$((failed + 1))
fi
done
[[ $failed -gt 0 ]] && echo "[prep-audio] cue_file errors: $failed" >>"$log"
else
echo "[prep-audio] cue_file not installed, skipping autocue tags" >>"$log"
fi
echo "${#files[@]}"
}