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restic-automatic-backup-sch…/bin/restic_check.sh
Gerard Bosch de28285741 fix: Change INSTALL_PREFIX placeholder notation to templating notation (#131)
* refactor: Change INSTALL_PREFIX placeholder notation to templating notation

The former shell notation `$INSTALL_PREFIX` could result confusing. As
this is a placeholder that's replaced in the `make`, we switch it to a
template notation `{{ INSTALL_PREFIX }}`.

* docs: Small fix on README/manual setup

* docs(email-notif): Document the `{{ INSTALL_PREFIX }}` placeholder

co-authored-by: giuaig <13609224+giuaig@users.noreply.github.com>

* Update README.md

Co-authored-by: Gerard Bosch <30733556+gerardbosch@users.noreply.github.com>

---------

Co-authored-by: giuaig <13609224+giuaig@users.noreply.github.com>
Co-authored-by: Erik Westrup <erik.westrup@icloud.com>
2023-12-13 23:49:41 +05:30

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#!/usr/bin/env bash
# Check the backups made with restic to Backblaze B2 for errors.
# See restic_backup.sh on how this script is run (as it's analogous for this script).
set -o errexit
set -o pipefail
[[ "${TRACE-0}" =~ ^1|t|y|true|yes$ ]] && set -o xtrace
# Clean up lock if we are killed.
# If killed by systemd, like $(systemctl stop restic), then it kills the whole cgroup and all it's subprocesses.
# However if we kill this script ourselves, we need this trap that kills all subprocesses manually.
exit_hook() {
echo "In exit_hook(), being killed" >&2
jobs -p | xargs kill
restic unlock
}
trap exit_hook INT TERM
# Assert that all needed environment variables are set.
assert_envvars() {
local varnames=("$@")
for varname in "${varnames[@]}"; do
if [ -z ${!varname+x} ]; then
printf "%s must be set for this script to work.\n\nDid you forget to source a {{ INSTALL_PREFIX }}/etc/restic/*.env.sh profile in the current shell before executing this script?\n" "$varname" >&2
exit 1
fi
done
}
warn_on_missing_envvars() {
local unset_envs=()
local varnames=("$@")
for varname in "${varnames[@]}"; do
if [ -z "${!varname}" ]; then
unset_envs=("${unset_envs[@]}" "$varname")
fi
done
if [ ${#unset_envs[@]} -gt 0 ]; then
printf "The following env variables are recommended, but have not been set. This script may not work as expected: %s\n" "${unset_envs[*]}" >&2
fi
}
assert_envvars\
RESTIC_PASSWORD_FILE RESTIC_REPOSITORY RESTIC_VERBOSITY_LEVEL
warn_on_missing_envvars \
B2_ACCOUNT_ID B2_ACCOUNT_KEY B2_CONNECTIONS
B2_ARG=
[ -z "${B2_CONNECTIONS+x}" ] || B2_ARG=(--option b2.connections="$B2_CONNECTIONS")
# Remove locks from other stale processes to keep the automated backup running.
# NOTE nope, don't unlock like restic_backup.sh. restic_backup.sh should take precedence over this script.
#restic unlock &
#wait $!
# Check repository for errors.
restic check \
"${B2_ARG[@]}" \
--verbose="$RESTIC_VERBOSITY_LEVEL" &
wait $!