86 lines
3.0 KiB
Bash
Executable File
86 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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umask 077
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# 由宿主机 cron 每分钟调用。调度配置来自后台 system_configs，实际执行仍在宿主机，
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# Web 后端不接触 Docker socket、备份载荷或客户端加密密码。
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck source=backup-common.sh
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source "${SCRIPT_DIR}/backup-common.sh"
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config_value() {
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local key="$1" fallback="$2" value
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value="$(backup_mysql_root_query "SELECT value FROM system_configs WHERE \`key\` = '${key}' LIMIT 1;" 2>/dev/null || true)"
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value="${value//$'\n'/}"
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printf '%s' "${value:-${fallback}}"
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}
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write_job_state() {
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local status_dir="$1" type="$2" status="$3" message="$4"
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mkdir -p "${status_dir}"
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{
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printf 'job_type=%q\n' "${type}"
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printf 'job_status=%q\n' "${status}"
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printf 'job_at=%q\n' "$(date -Iseconds)"
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printf 'job_message=%q\n' "${message}"
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} > "${status_dir}/last-job.env"
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chmod 600 "${status_dir}/last-job.env"
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}
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run_job() {
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local status_dir="$1" type="$2" script="$3"
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shift 3
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if "${script}" "$@"; then
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write_job_state "${status_dir}" "${type}" success '执行成功'
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"${SCRIPT_DIR}/backup-status.sh" write || true
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return
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else
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# 必须在失败分支中立即读取退出码；if 语句本身在无 else 时会返回 0。
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local code=$?
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write_job_state "${status_dir}" "${type}" failed "执行失败（退出码 ${code}）"
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"${SCRIPT_DIR}/backup-status.sh" write || true
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return "${code}"
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fi
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}
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main() {
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backup_require_cmd docker
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backup_require_cmd flock
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local backup_dir status_dir enabled hour minute interval now_hour now_minute
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backup_dir="$(backup_require_env BACKUP_DIR)"
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status_dir="${BACKUP_STATUS_DIR:-${backup_dir}/status}"
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backup_validate_dir "${status_dir}"
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backup_lock_or_exit "${backup_dir}/.scheduler.lock"
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enabled="$(config_value 'backup.schedule_enabled' 'true')"
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hour="$(config_value 'backup.full_hour' '4')"
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minute="$(config_value 'backup.full_minute' '30')"
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interval="$(config_value 'backup.binlog_interval_minutes' '1')"
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[[ "${enabled}" == true || "${enabled}" == false ]] || { backup_error 'backup.schedule_enabled 必须为 true 或 false'; exit 1; }
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[[ "${hour}" =~ ^[0-9]+$ && "${hour}" -le 23 && "${minute}" =~ ^[0-9]+$ && "${minute}" -le 59 ]] || {
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backup_error '备份全量时间配置无效'
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exit 1
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}
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[[ "${interval}" =~ ^[0-9]+$ && "${interval}" -ge 1 && "${interval}" -le 5 ]] || {
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backup_error 'binlog 归档间隔必须为 1-5 分钟'
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exit 1
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}
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if [[ "${enabled}" == false ]]; then
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"${SCRIPT_DIR}/backup-status.sh" write || true
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exit 0
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fi
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now_hour="$((10#$(date +%H)))"
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now_minute="$((10#$(date +%M)))"
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if ((now_minute % interval == 0)); then
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run_job "${status_dir}" binlog "${SCRIPT_DIR}/archive-binlog.sh" archive
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fi
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if ((now_hour == hour && now_minute == minute)); then
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run_job "${status_dir}" full "${SCRIPT_DIR}/backup-online.sh" full
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fi
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"${SCRIPT_DIR}/backup-status.sh" write || true
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}
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main "$@"
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