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borg_ynh/conf/backup_method
2021-09-30 17:32:13 +02:00

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#!/bin/bash
set -eo pipefail
app="${0#"./05-"}"
app="${app%"_app"}"
BORG_PASSPHRASE="$(yunohost app setting $app passphrase)"
repo="$(yunohost app setting $app repository)" #$4
if ssh-keygen -F "__SERVER__" >/dev/null ; then
BORG_RSH="ssh -i /root/.ssh/id_${app}_ed25519 -oStrictHostKeyChecking=yes "
else
BORG_RSH="ssh -i /root/.ssh/id_${app}_ed25519 -oStrictHostKeyChecking=no "
fi
do_need_mount() {
true
}
LOGFILE=/var/log/backup_borg.err
log_with_timestamp() {
sed -e "s/^/[$(date +"%Y-%m-%d_%H:%M:%S")] /" | tee -a $LOGFILE
}
do_backup() {
export BORG_PASSPHRASE
export BORG_RSH
export BORG_RELOCATED_REPO_ACCESS_IS_OK=yes
work_dir="$1"
name="$2"
repo="$3"
size="$4"
description="$5"
current_date=$(date +"%Y-%m-%d_%H:%M")
pushd "$work_dir"
set +e
if borg init -e repokey "$repo" ; then
#human_size=`echo $size | awk '{ suffix=" KMGT"; for(i=1; $1>1024 && i < length(suffix); i++) $1/=1024; print int($1) substr(suffix, i, 1), $3; }'`
# Speed in Kbps
#speed=1000
#evaluated_time=$(($size / ($speed * 1000 / 8) / 3600))
echo "Hello,
Your first backup on $repo is starting.
This is an automated message from your beloved YunoHost server." | /usr/bin/mail.mailutils -a "Content-Type: text/plain; charset=UTF-8" -s "[YNH] First backup is starting" "root"
fi
set -e
borg create "$repo::_${name}-${current_date}" ./ 2>&1 >/dev/null | log_with_timestamp
popd
# About thi _20 it's a crazy fix to avoid pruning wordpress__2
# if you prune wordpress
borg prune "$repo" -P "_${name}-" --keep-hourly 2 --keep-daily=7 --keep-weekly=8 --keep-monthly=12 2>&1 >/dev/null | log_with_timestamp
# Prune legacy archive name without error on wordpress/wordpress__2
borg prune "$repo" -P "${name}_" --keep-within 2m --keep-monthly=12 2>&1 >/dev/null | log_with_timestamp
# We prune potential manual backup older than 1 year
borg prune "$repo" --keep-within 1y 2>&1 >/dev/null | log_with_timestamp
}
do_mount() {
export BORG_PASSPHRASE
export BORG_RSH
work_dir="$1"
name="$2"
repo="$3"
size="$4"
description="$5"
borg mount "$repo::$name" "$work_dir" 2>&1 >/dev/null | log_with_timestamp
}
work_dir="$2"
name="$3"
size="$5"
description="$6"
case "$1" in
need_mount)
do_need_mount "$work_dir" "$name" "$repo" "$size" "$description"
;;
backup)
do_backup "$work_dir" "$name" "$repo" "$size" "$description"
;;
mount)
do_mount
;;
*)
echo "hook called with unknown argument \`$1'" >&2
exit 1
;;
esac
exit 0