Files
dragonsstash/scripts/backup/run-backup-assertions.sh
T

115 lines
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#!/usr/bin/env bash
set -Eeuo pipefail
SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
PROJECT_ROOT="$(cd -- "$SCRIPT_DIR/../.." && pwd -P)"
BACKUP_SCRIPT="$PROJECT_ROOT/scripts/backup/run-backup.sh"
TMP_ROOT="$(mktemp -d)"
cleanup() {
rm -rf -- "$TMP_ROOT"
}
trap cleanup EXIT
fail() {
printf 'ASSERTION FAILED: %s\n' "$*" >&2
exit 1
}
setup_fake_environment() {
local fake_bin="$TMP_ROOT/bin"
mkdir -p -- "$fake_bin" "$TMP_ROOT/mount" "$TMP_ROOT/staging"
printf 'not-secret\n' > "$TMP_ROOT/restic-password"
cat > "$fake_bin/docker" <<'EOF'
#!/usr/bin/env bash
set -Eeuo pipefail
printf '%s\t' "$@" >> "$DRAGONS_STASH_DOCKER_CALLS"
printf '\n' >> "$DRAGONS_STASH_DOCKER_CALLS"
if [[ "${1:-}" == "compose" && "${2:-}" == "ps" && "${3:-}" == "--status" && "${4:-}" == "running" && "${5:-}" == "-q" ]]; then
case "${6:-}" in
app) printf 'app-container\n' ;;
esac
exit 0
fi
if [[ "${1:-}" == "compose" && "${2:-}" == "stop" ]]; then
exit 0
fi
if [[ "${1:-}" == "compose" && "${2:-}" == "start" ]]; then
exit "${BACKUP_ASSERT_START_EXIT:-0}"
fi
if [[ " $* " == *" backup backup "* ]]; then
exit "${BACKUP_ASSERT_BACKUP_EXIT:-0}"
fi
exit 0
EOF
chmod +x "$fake_bin/docker"
cat > "$fake_bin/mountpoint" <<'EOF'
#!/usr/bin/env bash
set -Eeuo pipefail
exit 0
EOF
chmod +x "$fake_bin/mountpoint"
cat > "$fake_bin/flock" <<'EOF'
#!/usr/bin/env bash
set -Eeuo pipefail
exit 0
EOF
chmod +x "$fake_bin/flock"
export PATH="$fake_bin:$PATH"
export BACKUP_MOUNT_PATH="$TMP_ROOT/mount"
export BACKUP_STAGING_PATH="$TMP_ROOT/staging"
export BACKUP_RESTIC_PASSWORD_FILE="$TMP_ROOT/restic-password"
export BACKUP_RETENTION_DAYS="30"
export BACKUP_REPOSITORY="/backup/restic"
}
run_backup() {
local name="$1"
shift
DRAGONS_STASH_DOCKER_CALLS="$TMP_ROOT/docker-calls-$name.log" \
"$@" "$BACKUP_SCRIPT"
}
assert_restart_failure_makes_successful_backup_fail() {
local output="$TMP_ROOT/restart-fails-output.log"
setup_fake_environment
if BACKUP_ASSERT_START_EXIT=9 run_backup restart-fails bash >"$output" 2>&1; then
fail "backup reported success when restart failed"
fi
grep -q 'Failed to restart one or more previously running services' "$output" \
|| fail "restart failure did not produce an explicit error"
}
assert_backup_failure_exit_is_preserved_when_restart_also_fails() {
local output="$TMP_ROOT/backup-and-restart-fail-output.log"
local exit_code
setup_fake_environment
set +e
BACKUP_ASSERT_BACKUP_EXIT=42 BACKUP_ASSERT_START_EXIT=9 run_backup backup-and-restart-fail bash >"$output" 2>&1
exit_code=$?
set -e
[[ "$exit_code" -eq 42 ]] || fail "expected backup failure exit 42 to be preserved; got $exit_code"
grep -q 'Failed to restart one or more previously running services' "$output" \
|| fail "restart failure did not produce an explicit error"
}
assert_restart_failure_makes_successful_backup_fail
assert_backup_failure_exit_is_preserved_when_restart_also_fails
printf 'run-backup assertions passed\n'