#!/usr/bin/env bash

MINIO_SITE=minio
BACKUP_DIR="/data/backup/minio"
ARCHIVE_DIR='/data/backup/archive'
MC_OPTS="--recursive --limit-download 10M"
DATE_FORMAT=$(date +"%Y-%m-%d")
KEEP_DAY=$(date -d "-3 days" +%Y-%m-%d)

mc --version >/dev/null
if [[ "$?" -eq "0" ]]
then
    mc admin info ${MINIO_SITE} >/dev/null 2>/dev/null
    if [[ "$?" -eq "0" ]]
    then
        [[ -d ${BACKUP_DIR} ]] || install -d ${BACKUP_DIR}
        [[ -d ${ARCHIVE_DIR} ]] || install -d ${ARCHIVE_DIR}

        for bucket in $(mc ls ${MINIO_SITE} | awk '{print $5}' | sed 's@/@@')
        do
            echo "[ $bucket ] bucket start backup..."
            mc cp ${MC_OPTS} ${MINIO_SITE}/${bucket} ${BACKUP_DIR} >/dev/null 2>/dev/null &
        done
        wait

        # 归档压缩
        cd ${BACKUP_DIR} && tar -cf - . | pigz  > ${ARCHIVE_DIR}/minio-${DATE_FORMAT}.tar.gz || tar acvf ${ARCHIVE_DIR}/minio-${DATE_FORMAT}.tar.gz .

        # 删除旧备份数据
        find ${ARCHIVE_DIR} -type f -name "minio-${KEEP_DAY}.tar.gz" -exec rm -f {} \;
    else
        echo "[ ${MINIO_SITE} ] not available, exit!"
        exit 67
    fi
else
    echo "mc tool does not exist,exit!"
    exit 67
fi