Files
cloudron-box/src/scripts/backupapp.sh
Girish Ramakrishnan 7b1a6e605b ensure backup directory exists
this is because the filename can now contain subpaths
2017-01-09 16:09:54 -08:00

118 lines
3.4 KiB
Bash
Executable File

#!/bin/bash
set -eu -o pipefail
if [[ $EUID -ne 0 ]]; then
echo "This script should be run as root." >&2
exit 1
fi
if [[ $# == 1 && "$1" == "--check" ]]; then
echo "OK"
exit 0
fi
readonly DATA_DIR="${HOME}/data"
# verify argument count
if [[ "$1" == "s3" && $# -lt 9 ]]; then
echo "Usage: backupapp.sh s3 <appId> <s3 config url> <s3 data url> <access key id> <access key> <region> <endpoint> <password> [session token]"
exit 1
fi
if [[ "$1" == "filesystem" && $# -lt 6 ]]; then
echo "Usage: backupapp.sh filesystem <appId> <backupFolder> <configFileName> <dataFileName> <password>"
exit 1
fi
# extract arguments
readonly app_id="$2"
if [[ "$1" == "s3" ]]; then
# env vars used by the awscli
readonly s3_config_url="$3"
readonly s3_data_url="$4"
export AWS_ACCESS_KEY_ID="$5"
export AWS_SECRET_ACCESS_KEY="$6"
export AWS_DEFAULT_REGION="$7"
readonly endpoint_url="$8"
readonly password="$9"
if [ $# -gt 9 ]; then
export AWS_SESSION_TOKEN="${10}"
fi
elif [[ "$1" == "filesystem" ]]; then
readonly backup_folder="$3"
readonly backup_config_fileName="$4"
readonly backup_data_fileName="$5"
readonly password="$6"
fi
# perform backup
readonly now=$(date "+%Y-%m-%d-%H%M%S")
readonly app_data_dir="${DATA_DIR}/${app_id}"
readonly app_data_snapshot="${DATA_DIR}/snapshots/${app_id}-${now}"
btrfs subvolume snapshot -r "${app_data_dir}" "${app_data_snapshot}"
# will be checked at the end
try=0
if [[ "$1" == "s3" ]]; then
# may be empty
optional_args=""
if [ -n "${endpoint_url}" ]; then
optional_args="--endpoint-url ${endpoint_url}"
fi
# Upload config.json first because uploading tarball might take a lot of time, leading to token expiry
for try in `seq 1 5`; do
echo "Uploading config.json to ${s3_config_url} (try ${try})"
error_log=$(mktemp)
# use aws instead of curl because curl will always read entire stream memory to set Content-Length
# aws will do multipart upload
if cat "${app_data_snapshot}/config.json" \
| aws ${optional_args} s3 cp - "${s3_config_url}" 2>"${error_log}"; then
break
fi
cat "${error_log}" && rm "${error_log}"
done
if [[ ${try} -eq 5 ]]; then
echo "Backup failed uploading config.json"
btrfs subvolume delete "${app_data_snapshot}"
exit 3
fi
for try in `seq 1 5`; do
echo "Uploading backup to ${s3_data_url} (try ${try})"
error_log=$(mktemp)
if tar -czf - -C "${app_data_snapshot}" . \
| openssl aes-256-cbc -e -pass "pass:${password}" \
| aws ${optional_args} s3 cp - "${s3_data_url}" 2>"${error_log}"; then
break
fi
cat "${error_log}" && rm "${error_log}"
done
elif [[ "$1" == "filesystem" ]]; then
mkdir -p $(dirname "${backup_folder}/${backup_config_fileName}")
echo "Storing backup config to ${backup_folder}/${backup_config_fileName}"
cat "${app_data_snapshot}/config.json" > "${backup_folder}/${backup_config_fileName}"
echo "Storing backup data to ${backup_folder}/${backup_data_fileName}"
tar -czf - -C "${app_data_snapshot}" . | openssl aes-256-cbc -e -pass "pass:${password}" > "${backup_folder}/${backup_data_fileName}"
fi
btrfs subvolume delete "${app_data_snapshot}"
if [[ ${try} -eq 5 ]]; then
echo "Backup failed uploading backup tarball"
exit 3
else
echo "Backup successful"
fi