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