48 lines
1.8 KiB
Bash
48 lines
1.8 KiB
Bash
#!/usr/bin/env bash
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set -eo pipefail
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source "$(dirname "$0")/utils.sh"
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[[ ! $# -eq 1 ]] && _log "ERROR" "Usage: $0 <backup number>" && exit 1
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[[ -z "${BACKUP_DIR}" ]] && _log "ERROR" "Required 'BACKUP_DIR' env not set" && exit 1
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[[ -z "${JENKINS_HOME}" ]] && _log "ERROR" "Required 'JENKINS_HOME' env not set" && exit 1
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BACKUP_NUMBER=$1
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RESTORE_RETRY_COUNT=${RESTORE_RETRY_COUNT:-10}
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RESTORE_RETRY_INTERVAL=${RESTORE_RETRY_INTERVAL:-10}
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# --> Check if another restore process is running (operator restart/crash)
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TRAP_FILE="/tmp/_restore_${BACKUP_NUMBER}_is_running"
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trap "rm -f ${TRAP_FILE}" SIGINT SIGTERM
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for ((i=0; i<RESTORE_RETRY_COUNT; i++)); do
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[[ ! -f "${TRAP_FILE}" ]] && _log "INFO" "[restore] no other process are running, restoring" && break
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_log "INFO" "[restore] is already running. Waiting for ${RESTORE_RETRY_INTERVAL} seconds..."
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sleep "${RESTORE_RETRY_INTERVAL}"
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done
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[[ -f "${TRAP_FILE}" ]] && { _log "ERROR" "[restore] is still running after waiting ${RESTORE_RETRY_COUNT} time ${RESTORE_RETRY_INTERVAL}s. Exiting."; exit 1; }
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# --< Done
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_log "INFO" "[restore] restore backup with backup number #${BACKUP_NUMBER}"
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touch "${TRAP_FILE}"
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BACKUP_FILE="${BACKUP_DIR}/${BACKUP_NUMBER}"
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if [[ -f "$BACKUP_FILE.tar.gz" ]]; then
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_log "INFO" "[restore] old format tar.gz found, restoring it"
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OPTS=""
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EXT="tar.gz"
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elif [[ -f "$BACKUP_FILE.tar.zstd" ]]; then
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_log "INFO" "[restore] Backup file found, proceeding"
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OPTS="--zstd"
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EXT="tar.zstd"
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else
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_log "ERROR" "[restore] backup file not found: $BACKUP_FILE"
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exit 1
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fi
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tar $OPTS -C "${JENKINS_HOME}" -xf "${BACKUP_DIR}/${BACKUP_NUMBER}.${EXT}"
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_log "INFO" "[restore] deleting lock file ${TRAP_FILE}"
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test -f "${TRAP_FILE}" && rm -f "${TRAP_FILE}"
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_log "INFO" "[restore] restoring ${BACKUP_NUMBER} Done"
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exit 0
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