wordpress backup script for rental server

wp.sh

#!/usr/bin/env bash

set -e

# default variables
BACKUP_DIR=$HOME/backup
AWSCLI=/usr/local/bin/aws
WPCLI=/usr/local/bin/wp
DATE=$(date +%Y%m%d%H%M%S)
ROTATE=3

_wpdomain() {
    $WPCLI --path=$WP_INSTALL_DIR option get siteurl | perl -nle '/^https?:\/\/([^\/]+)\/?.*/; print $1'
}

backup() {

    local backup_dir=$BACKUP_DIR/$DOMAIN/$DATE

    if [[ ! -d $backup_dir ]]; then
        mkdir -p $backup_dir
    fi

    # wordpress contents backup
    tar -C $WP_INSTALL_DIR -pczf $backup_dir/wordpress.tar.gz ./

    # wordpress mysql backup
    $WPCLI --path=$WP_INSTALL_DIR db export - | gzip >"$backup_dir/mysqldump.sql.gz"


    # delete old backup
    while true; do
        if [[ $(ls -1 $BACKUP_DIR/$DOMAIN | wc -l) -le $ROTATE ]]; then
            break
        else
            local old_remove_dir=$(ls -t1 $BACKUP_DIR/$DOMAIN  | tail -1)
            rm -fr "$BACKUP_DIR/$DOMAIN/$old_remove_dir"
            sleep 1
        fi
    done
}

backup_s3() {

    local s3cmd=$AWSCLI
    if [[ -n "$AWS_PROFILE" ]]; then
        s3cmd="$s3cmd --profile=$AWS_PROFILE"
    fi
    s3cmd="$s3cmd s3"

    if [[ ! -d "$BACKUP_DIR/$DOMAIN" ]]; then
        echo "[ERROR] "$BACKUP_DIR/$DOMAIN"  is not exists."
        exit 1
    fi

    local target=""
    if [[ -n "$REMOTE_TARGET" ]]; then
        target=$REMOTE_TARGET
    else
        target=$(ls -t1 $BACKUP_DIR/$DOMAIN  | head -1)
    fi
    for f in $(ls "$BACKUP_DIR/$DOMAIN/$target"); do
        $s3cmd cp "$BACKUP_DIR/$DOMAIN/$target/$f" s3://$AWS_S3_BUCKET/$DOMAIN/$target/$f
    done
}


cron() {
    $WPCLI --path=$WP_INSTALL_DIR cron event run --due-now
}


if [[ $# -eq 1 ]] && [[ $1 =~ ^(backup|backup_s3|cron|restore)$ ]] ; then
    MODE=${BASH_REMATCH[1]}
else
    echo "Usage: $0 [backup|backup_s3|cron|restore]"
    exit 1
fi

if [[ -f "$HOME/wp.env" ]]; then
    source "$HOME/wp.env"
fi
if [[ -n "$ENVIRONMENT" ]]; then
    source "$HOME/wp.env.$ENVIRONMENT"
fi

if [[ ! -d $WP_INSTALL_DIR ]]; then
    echo "[ERROR] $WP_INSTALL_DIR is not exists."
    exit 1
fi
if [[ ! -f $WP_INSTALL_DIR/wp-login.php  ]]; then
    echo "[ERROR] $WP_INSTALL_DIR: wordpress is not installed."
    exit 1
fi

DOMAIN=$(_wpdomain)
$MODE