39 lines
1.3 KiB
Bash
39 lines
1.3 KiB
Bash
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#!/usr/bin/env bash
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# Launch the hsa-app binary with its environment loaded from an env file.
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#
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# Usage:
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# hsa-app.sh [ENV_FILE]
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#
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# ENV_FILE resolves to, in order: the first argument, then $HSA_ENV_FILE, then
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# /etc/hsa-app/hsa-app.env. The binary defaults to ./hsa next to this script;
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# override with $HSA_BIN (e.g. HSA_BIN=/usr/local/bin/hsa).
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#
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# Designed as a systemd ExecStart: it exports every KEY=VALUE in the env file and
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# then exec's the binary, so the binary becomes the unit's main process (signals
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# and exit codes propagate correctly). The env file should use ABSOLUTE paths for
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# DB_PATH / STORAGE_DIR / BACKUP_DIR / CONFIG_PATH, since the app resolves relative
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# paths from the working directory.
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set -euo pipefail
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ENV_FILE="${1:-${HSA_ENV_FILE:-/etc/hsa-app/hsa-app.env}}"
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HERE="$(cd "$(dirname "$(readlink -f "$0")")" && pwd)"
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BIN="${HSA_BIN:-$HERE/hsa}"
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if [[ ! -r "$ENV_FILE" ]]; then
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echo "hsa-app: env file not found or unreadable: $ENV_FILE" >&2
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exit 1
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fi
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if [[ ! -x "$BIN" ]]; then
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echo "hsa-app: binary not found or not executable: $BIN" >&2
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exit 1
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fi
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# Export every assignment in the env file (KEY=VALUE lines; '#' comments and blank
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# lines are fine). set -a marks all subsequently-set vars for export.
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set -a
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# shellcheck disable=SC1090
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source "$ENV_FILE"
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set +a
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exec "$BIN"
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