Chris Cowan
300ad5b49c
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82 lines
2.1 KiB
Plaintext
82 lines
2.1 KiB
Plaintext
#!/usr/bin/with-contenv bash
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set -e
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# Source env if available
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if [[ -f /config/backupbot.env ]]; then
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export $(grep -v '^#' /config/backupbot.env | xargs)
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else
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echo "[INFO] copying env vars from defaults..."
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cp -r /defaults/backupbot.env /config/
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export $(grep -V '^#' /config/backupbot.env)
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fi
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# Initialize default web interface if missing
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if [ ! -d /config/web ]; then
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echo "[INFO] Populating /config/web from defaults..."
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cp -r /defaults/web /config/
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fi
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# Start Python HTTP server for web config in background
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cd /config/web
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nohup python3 -m http.server 8080 --cgi >/config/log/web.log 2>&1 &
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# Start backup scheduler
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STATE_FILE="/config/last_backup_date"
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LOG_FILE="/config/log/pgbackup.log"
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mkdir -p "$(dirname "$STATE_FILE")" "$(dirname "$LOG_FILE")"
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# TZ
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: "${TZ:=UTC}"
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export TZ
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# Retry config
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RETRIES=3
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GOTIFY_URL="${GOTIFY_URL:-}"
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GOTIFY_TOKEN="${GOTIFY_TOKEN:-}"
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# Helper: seconds until next 3AM
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seconds_until_next_3am() {
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local now next_3am
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now=$(date +%s)
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next_3am=$(date -d "today 03:00" +%s)
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((now >= next_3am)) && next_3am=$(date -d "tomorrow 03:00" +%s)
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echo $((next_3am - now))
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}
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# Run backup with retries
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run_backup() {
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local attempt=1
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while ((attempt <= RETRIES)); do
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echo "[INFO] Backup attempt $attempt"
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if /usr/local/bin/backup.sh "$LOG_FILE"; then
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echo "[SUCCESS] Backup completed"
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return 0
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else
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echo "[WARN] Backup failed on attempt $attempt"
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((attempt++))
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sleep 5
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fi
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done
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# Send Gotify notification if configured
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if [[ -n "$GOTIFY_URL" && -n "$GOTIFY_TOKEN" ]]; then
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curl -s -X POST "$GOTIFY_URL/message?token=$GOTIFY_TOKEN" \
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-F "title=Backup Failed" \
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-F "message=PostgreSQL backup failed after $RETRIES attempts" \
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-F "priority=5"
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fi
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return 1
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}
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# Main loop
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while true; do
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TODAY=$(date +%F)
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if [[ -f "$STATE_FILE" && "$(cat "$STATE_FILE")" == "$TODAY" ]]; then
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echo "[INFO] Backup already done for $TODAY"
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else
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echo "[INFO] Running backup for $TODAY"
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if run_backup; then
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echo "$TODAY" >"$STATE_FILE"
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fi
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fi
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SECONDS_TO_WAIT=$(seconds_until_next_3am)
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sleep "$SECONDS_TO_WAIT"
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done
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