compose: opt-in trunk-recorder service + supervisor and uploadScript (node-26#45)

robotastic/trunk-recorder:5.2.1 pinned by digest, behind the trunk-recorder compose profile, host network, /dev/bus/usb. run.sh restarts TR when the edge-node rewrites config.json and reports state for health; drb-upload.sh hands each finished call (wav, then json) to recordings/tr-inbox. README carries the GPL-3.0 source note. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-28 00:21:40 -04:00
parent fa3eac3b28
commit c9f162a508
5 changed files with 195 additions and 0 deletions
@@ -0,0 +1,87 @@
+#!/bin/sh
+# Supervisor for Trunk Recorder inside its container (node-26#45).
+#
+# The edge-node writes /app/config.json from the C2 system config but has no
+# Docker access, so it cannot restart this container. This loop does it:
+#   - waits for config.json, then runs trunk-recorder on it
+#   - restarts it when config.json changes or /app/restart-request appears
+#   - keeps it stopped while /app/stop-request exists (dashboard Stop)
+#   - restarts it after a crash, backing off 5 s -> 60 s (`restarts` counts
+#     crashes only, not config restarts)
+#   - writes /app/drb-status.json every few seconds for the edge-node's health
+#     check (state, pid, started_at, restarts, last_exit, epoch)
+set -u
+APP="${DRB_TR_APP:-/app}"
+CFG="$APP/config.json"
+STATUS="$APP/drb-status.json"
+RESTART="$APP/restart-request"
+STOP="$APP/stop-request"
+REC="${DRB_RECORDINGS:-/recordings}"
+mkdir -p "$APP/logs" "$REC/tr-capture" "$REC/tr-inbox"
+
+pid=""
+started=0
+restarts=0
+last_exit=null
+backoff=5
+cfgsum=""
+
+write_status() {
+  printf '{"state":"%s","pid":%s,"started_at":%s,"restarts":%s,"last_exit":%s,"epoch":%s}\n' \
+    "$1" "${pid:-null}" "$started" "$restarts" "$last_exit" "$(date +%s)" > "$STATUS.tmp" \
+    && mv -f "$STATUS.tmp" "$STATUS"
+}
+
+sum() { md5sum "$CFG" 2>/dev/null | cut -d' ' -f1; }
+
+stop_tr() {
+  if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
+    kill -TERM "$pid"
+    i=0
+    while kill -0 "$pid" 2>/dev/null && [ "$i" -lt 30 ]; do sleep 0.5; i=$((i + 1)); done
+    kill -KILL "$pid" 2>/dev/null
+    wait "$pid" 2>/dev/null
+  fi
+  pid=""
+}
+
+trap 'stop_tr; write_status stopped; exit 0' TERM INT
+
+nap() { sleep "$1" & wait $!; }
+
+while :; do
+  if [ -f "$STOP" ]; then
+    [ -n "$pid" ] && { echo "drb: stop requested"; stop_tr; }
+    write_status stopped; nap 2; continue
+  fi
+  if [ ! -f "$CFG" ]; then
+    write_status waiting_for_config; nap 5; continue
+  fi
+  if [ -z "$pid" ]; then
+    rm -f "$RESTART"
+    cfgsum="$(sum)"
+    echo "drb: starting trunk-recorder"
+    trunk-recorder --config="$CFG" &
+    pid=$!
+    started="$(date +%s)"
+  fi
+  write_status running
+  nap 5
+  if ! kill -0 "$pid" 2>/dev/null; then
+    wait "$pid" 2>/dev/null
+    last_exit=$?
+    pid=""
+    restarts=$((restarts + 1))
+    # A run that lasted a while resets the backoff.
+    [ $(( $(date +%s) - started )) -gt 120 ] && backoff=5
+    echo "drb: trunk-recorder exited ($last_exit); restarting in ${backoff}s"
+    write_status crashed
+    nap "$backoff"
+    backoff=$((backoff * 2)); [ "$backoff" -gt 60 ] && backoff=60
+    continue
+  fi
+  if [ -f "$RESTART" ] || [ "$(sum)" != "$cfgsum" ]; then
+    echo "drb: config changed or restart requested — restarting trunk-recorder"
+    stop_tr
+  fi
+done