64 lines
2.6 KiB
Bash
Executable File
64 lines
2.6 KiB
Bash
Executable File
#!/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 "${JENKINS_HOME}" ]] && _log "ERROR" "Required 'JENKINS_HOME' env not set" && exit 1
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BACKUP_RETRY_COUNT=${BACKUP_RETRY_COUNT:-3}
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BACKUP_RETRY_INTERVAL=${BACKUP_RETRY_INTERVAL:-60}
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BACKUP_NUMBER=$1
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TRAP_FILE="/tmp/_backup_${BACKUP_NUMBER}_is_running"
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# --> Check if another backup process is running (operator restart/crash)
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for ((i=0; i<BACKUP_RETRY_COUNT; i++)); do
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[[ ! -f "${TRAP_FILE}" ]] && _log "INFO" "[backup] no other backup process are running" && break
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_log "INFO" "[backup] backup is already running. Waiting for ${BACKUP_RETRY_INTERVAL} seconds..."
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sleep "${BACKUP_RETRY_INTERVAL}"
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done
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[[ -f "${TRAP_FILE}" ]] && { _log "ERROR" "[backup] backup is still running after waiting ${BACKUP_RETRY_COUNT} time ${BACKUP_RETRY_INTERVAL}s. Exiting."; exit 1; }
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# --< Done
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_log "INFO" "[backup] running backup ${BACKUP_NUMBER}"
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touch "${TRAP_FILE}"
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# create temp dir on the same filesystem with a BACKUP_DIR to be able use atomic mv enstead of copy
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BACKUP_TMP_DIR=$(mktemp -d --tmpdir="${BACKUP_DIR}")
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_clean(){
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test -d "${BACKUP_TMP_DIR}" && rm -fr "${BACKUP_TMP_DIR}"
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test -f "${TRAP_FILE}" && rm -f "${TRAP_FILE}"
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}
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_trap(){
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_clean
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_log "ERROR" "[backup] something wrong happened, check the logs"
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}
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trap '_trap' SIGQUIT SIGINT SIGTERM
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# config.xml in a job directory is a config file that shouldn't be backed up
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# config.xml in child directories is state that should. For example-
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# branches/myorg/branches/myrepo/branches/master/config.xml should be retained while
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# branches/myorg/config.xml should not
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tar --zstd -C "${JENKINS_HOME}" -cf "${BACKUP_TMP_DIR}/${BACKUP_NUMBER}.tar.zstd" \
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--exclude jobs/*/workspace* \
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--no-wildcards-match-slash --anchored \
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--ignore-failed-read \
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--exclude jobs/*/config.xml -c jobs || ret=$?
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if [[ "$ret" -eq 0 ]]; then
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_log "INFO" "[backup] backup ${BACKUP_NUMBER} was completed without warnings"
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elif [[ "$ret" -eq 1 ]]; then
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_log "INFO" "[backup] backup ${BACKUP_NUMBER} was completed with some warnings"
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fi
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mv "${BACKUP_TMP_DIR}/${BACKUP_NUMBER}.tar.zstd" "${BACKUP_DIR}/${BACKUP_NUMBER}.tar.zstd"
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_log "INFO" "[backup] cleaning ${BACKUP_TMP_DIR} and trap file ${TRAP_FILE}"
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_clean
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[[ ! -s ${BACKUP_DIR}/${BACKUP_NUMBER}.tar.zstd ]] && _log "ERROR" "[backup] file '${BACKUP_DIR}/${BACKUP_NUMBER}.tar.zstd' is empty" && exit 1
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_log "INFO" "[backup] ${BACKUP_NUMBER} done"
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exit 0
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