0cd0d95612
- Command intake (reboot/shutdown) on infoscreen/{uuid}/commands with ack lifecycle
- MQTT_USER/MQTT_PASSWORD_BROKER split from identity vars; configure_mqtt_security() updated
- infoscreen-simclient.service: Type=notify, WatchdogSec=60, Restart=on-failure
- infoscreen-notify-failure@.service + script: retained MQTT alert when systemd gives up (Gap 3)
- _sd_notify() watchdog keepalive in simclient main loop (Gap 1)
- broker_connection block in health payload: reconnect_count, last_disconnect_at (Gap 2)
- COMMAND_MOCK_REBOOT_IMMEDIATE_COMPLETE canary flag with safety guard
- SERVER_TEAM_ACTIONS.md: server-side integration action items
- Docs: README, CHANGELOG, src/README, copilot-instructions updated
- 43 tests passing
56 lines
1.8 KiB
Bash
Executable File
56 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Publishes a service-failed MQTT notification when called by systemd OnFailure=.
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# Usage: infoscreen-notify-failure.sh <failing-unit-name>
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#
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# Designed to be called from infoscreen-notify-failure@.service.
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# Reads broker credentials from .env; reads client UUID from config.
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# Safe to run even if MQTT is unreachable (exits cleanly, errors logged to journal).
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set -euo pipefail
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FAILING_UNIT="${1:-unknown}"
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PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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ENV_FILE="$PROJECT_DIR/.env"
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UUID_FILE="$PROJECT_DIR/src/config/client_uuid.txt"
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# Load .env (skip comments and blank lines)
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if [[ -f "$ENV_FILE" ]]; then
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set -a
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# shellcheck source=/dev/null
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source <(grep -v '^\s*#' "$ENV_FILE" | grep -v '^\s*$')
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set +a
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fi
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MQTT_BROKER="${MQTT_BROKER:-localhost}"
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MQTT_PORT="${MQTT_PORT:-1883}"
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MQTT_USER="${MQTT_USER:-}"
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MQTT_PASSWORD_BROKER="${MQTT_PASSWORD_BROKER:-}"
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CLIENT_UUID="unknown"
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if [[ -f "$UUID_FILE" ]]; then
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CLIENT_UUID="$(cat "$UUID_FILE" | tr -d '[:space:]')"
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fi
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TOPIC="infoscreen/${CLIENT_UUID}/service_failed"
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TIMESTAMP="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
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PAYLOAD=$(printf '{"event":"service_failed","unit":"%s","client_uuid":"%s","failed_at":"%s"}' \
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"$FAILING_UNIT" "$CLIENT_UUID" "$TIMESTAMP")
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# Build mosquitto_pub auth args
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AUTH_ARGS=()
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if [[ -n "$MQTT_USER" ]]; then AUTH_ARGS+=(-u "$MQTT_USER"); fi
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if [[ -n "$MQTT_PASSWORD_BROKER" ]]; then AUTH_ARGS+=(-P "$MQTT_PASSWORD_BROKER"); fi
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echo "Publishing service-failed notification: unit=$FAILING_UNIT client=$CLIENT_UUID"
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mosquitto_pub \
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-h "$MQTT_BROKER" \
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-p "$MQTT_PORT" \
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"${AUTH_ARGS[@]}" \
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-t "$TOPIC" \
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-m "$PAYLOAD" \
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-q 1 \
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--retain \
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2>&1 || echo "WARNING: mosquitto_pub failed (broker unreachable?); notification not delivered"
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