cloudsync

cloudsync.sh

#!/bin/bash
# @Author: jsunnex
# @Date:   2017-10-02 10:18:03
# @Last Modified by:   jsunnex
# @Last Modified time: 2018-08-17 14:06:36
#
#
# Use this script to backup your systemo config for quick redeploy
# 
# chmod +x /opt/cloudsync.sh
# crontab -e
#
# CRON:
#       30 */1 * * * /opt/cloudsync.sh >> /tmp/cloudsync.log
#

######################################### CONFIG #########################################
#
#   Place this in ~/.cloudsync
#   All paths must be absolute!
#
### Home Sync:
## These folders will be synced both ways
## NOTE: Only folders contained in home can be synced
SYNC_DIR="";
SYNC_NAME="";
# Locations in home dir to sync
SYNC_LOCATIONS="";

### System Backup:
## These folders will be backed up in a single direction
BACKUP_DIR="";
BACKUP_NAME="";
# Locations on system to backup
BACKUP_LOCATIONS="";
# Strings to ignore
BACKUP_IGNORE_STRINGS="";
#
##########################################################################################

if ! which rsync >/dev/null; then
    echo "You need to first install rsync - 'sudo apt install rsync' should do the trick";
    exit 1;
fi

if ! which unison >/dev/null; then
    echo "You need to first install unison - 'sudo apt install unison' should do the trick";
    exit 1;
fi

# Read local config file
source ${HOME}/.cloudsync;

# Setup backup and sync destinations
BACKUP_DESTINATION="${BACKUP_DIR}/${BACKUP_NAME}";
SYNC_DESTINATION="${SYNC_DIR}/sync/${SYNC_NAME}";
mkdir -p ${BACKUP_DESTINATION};

if [[ "${SYNC_LOCATIONS}" != "" && ! -d "${SYNC_DESTINATION}"  ]]; then
    echo "It is not safe to point to a non-existant sync location. This is a good way to lose all your files.";
    echo
    echo "First create the directroy ${SYNC_DESTINATION}, then run this script again..."
    echo "     - mkdir -p ${SYNC_DESTINATION}"
    echo
    exit 1;
fi


stage_header() {
    echo -e "\e[1;34m"
    echo -e "############"
    echo -e "##                "
    echo -e "##       ${1}";
    echo -e "##                "
    echo -e "############"
    echo -e "\e[0m"
}

cloudbackup () {
    # Read backup stamp
    if [[ "${BACKUP_LOCATIONS}" != "" ]]; then
        DATE_NOW=$(date +"%Y-%m-%d");
        DATE_LAST=$(date -d $(cat ${BACKUP_DESTINATION}/.last_backup) +"%Y-%m-%d");
        if [[ "${DATE_NOW}" > "${DATE_LAST}" ]]; then
            stage_header "The last backup was run on ${DATE_LAST}. Time to run another one...";
            ARGS="";
            for ignore in ${BACKUP_IGNORE_STRINGS}; do
                ARGS="$ARGS --exclude=*${ignore}*"
            done
            for loc in ${BACKUP_LOCATIONS}; do
                rsync -aAXvR ${ARGS} ${loc} ${BACKUP_DESTINATION}
            done
            echo ${DATE_NOW} > ${BACKUP_DESTINATION}/.last_backup;
        else
            stage_header "Not running backup. The last backup was run on ${DATE_LAST}.";
        fi
    fi
}


cloudsync () {
    if [[ "${SYNC_LOCATIONS}" != "" ]]; then
        ARGS="-auto -silent -dontchmod -perms=0";
        for arg in $@; do
            if [[ "${arg}" == "-v" ]]; then
                ARGS=" -dontchmod -perms=0";
            fi
        done
        for arg in $@; do
            if [[ "${arg}" == "-a" ]]; then
                ARGS="${ARGS} -auto";
            fi
            if [[ "${arg}" == "-s" ]]; then
                ARGS="${ARGS} -silent";
            fi
            if [[ "${arg}" == "--no-perms" ]]; then
                ARGS="${ARGS} -perms=0";
            fi
        done
        for loc in ${SYNC_LOCATIONS}; do
            dest=${SYNC_DESTINATION}${loc#$HOME};
            stage_header "Syncing ${loc} << >> ${dest}";
            unison ${ARGS} ${loc} ${dest};
            echo 
            # TODO: Add file permission ledger and run a command post sync of any file that updates file permissions. Some sync locations do not support file permissions
        done
    fi
}



###################
###
###  EXECUTE:
###

DATESTAMP=`date "+%Y/%m/%d-%H:%M:%S"`;
echo -e "\e[1;32m"
echo -e "##############################################"
echo -e "             Running cloudsync...             "
echo
echo -e "       Executed at ${DATESTAMP}               "
echo -e "##############################################"
echo -e "\e[0m"

cloudbackup;
cloudsync $@;
exit 0;