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Use curly braces for all variables #3

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Use curly braces for all variables #3

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51 changes: 31 additions & 20 deletions docker_volume_backup.sh
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Original file line number Diff line number Diff line change
@@ -1,53 +1,64 @@
#!/bin/bash

compose_file_path=$1
compose_file_path=${1}
project_name=${2,,}
backup_path=$3
backup_or_restore=$4
restore_date=$5
backup_path=${3}
backup_or_restore=${4}
restore_date=${5}

set -e

function backup_volume {
volume_name=$1
backup_destination=$2
date_suffix=$(date -I)
volume_name=${1}
backup_destination=${2}
date=$(date -I)

docker run --rm -v $volume_name:/data -v $backup_destination:/backup ubuntu tar -zcvf /backup/$volume_name-$date_suffix.tar /data
docker run --rm \
-v ${volume_name}:/data \
-v ${backup_destination}:/backup \
ubuntu \
tar -Jcvf /backup/${volume_name}-${date}.tar.xz /data
}

function restore_volume {
volume_name=$1
backup_destination=$2
date=$3
volume_name=${1}
backup_destination=${2}
date=${3}

docker run --rm -v $volume_name:/data ubuntu find /data -mindepth 1 -delete
docker run --rm -v $volume_name:/data -v $backup_destination:/backup ubuntu tar -xvf /backup/$volume_name-$date.tar -C .
docker run --rm \
-v ${volume_name}:/data \
ubuntu \
find /data -mindepth 1 -delete
docker run --rm \
-v ${volume_name}:/data \
-v ${backup_destination}:/backup \
ubuntu \
tar -xvf /backup/${volume_name}-${date}.tar.xz -C .
}

function main {
echo "Stopping running containers"
docker-compose -f $compose_file_path -p $project_name stop
docker-compose -f ${compose_file_path} -p ${project_name} stop

echo "Mounting volumes and performing backup/restore..."
volumes=($(docker volume ls -f name=$project_name | awk '{if (NR > 1) print $2}'))
volumes=($(docker volume ls -f name=${project_name} | awk '{if (NR > 1) print ${2}}'))
for v in "${volumes[@]}"
do
if [ "$backup_or_restore" == "backup" ]
if [ "${backup_or_restore}" == "backup" ]
then
echo "Perform backup"
backup_volume $v $backup_path
backup_volume ${v} ${backup_path}
fi

if [ "$backup_or_restore" == "restore" ]
if [ "${backup_or_restore}" == "restore" ]
then
echo "Restore from backup"
restore_volume $v $backup_path $restore_date
restore_volume ${v} ${backup_path} ${restore_date}
fi
done

echo "Restarting containers"
docker-compose -f $compose_file_path -p $project_name start
docker-compose -f ${compose_file_path} -p ${project_name} start
}

main