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soleprint/berth/ctrl/lib/config.sh
2026-09-14 03:57:00 -03:00

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# Shared config loading. Sourced, never executed. Run from ctrl/.
#
# Precedence, weakest first:
# ctrl/versions.env pinned toolchain (committed)
# ctrl/env.d/<target>.env provider shape: aws|gcp (committed)
# ctrl/.env machine-local + secrets (gitignored)
# the caller's env `make estate plan TARGET=gcp` (always wins)
CONFIG_OVERRIDABLE="TARGET ESTATE CLOUD REGION INSTANCE_TYPE
HOST HOST_ADMIN AWS_PROFILE AWS_HOSTED_ZONE_ID
GCP_PROJECT GCP_ZONE TOFU_WORKSPACE"
# rig's port formula, reproduced rather than imported. cksum because it is
# POSIX and gives the same value on every machine. Used to verify, not allocate.
derive_port_base() {
local h; h=$(printf '%s' "$1" | cksum | awk '{print $1}')
echo $((20000 + (h % 200) * 10))
}
_config_restore() {
local line
while IFS= read -r line; do
if [ -n "$line" ]; then
eval "export $line"
fi
done <<< "$1"
# A while loop returns its last body command's status; the trailing empty
# line would otherwise make this return 1 and trip `set -e` in the caller.
return 0
}
load_config() {
local k saved=""
for k in $CONFIG_OVERRIDABLE; do
# ${!k+x} distinguishes "set but empty" from "unset" — an explicit
# FOO= on the command line is a real choice and must survive.
if [ -n "${!k+x}" ]; then
saved+="$k=$(printf '%q' "${!k}")"$'\n'
fi
done
set -a
source ./versions.env
[ -f ./.env ] && source ./.env
set +a
# Re-apply overrides now so TARGET is the caller's before we pick the file.
_config_restore "$saved"
local target="${TARGET:-aws}"
if [ ! -f "./env.d/${target}.env" ]; then
echo "no such target: env.d/${target}.env" >&2
echo "available: $(ls env.d/*.env 2>/dev/null | xargs -n1 basename | sed 's/\.env$//' | tr '\n' ' ')" >&2
exit 1
fi
set -a
source "./env.d/${target}.env"
[ -f ./.env ] && source ./.env
set +a
_config_restore "$saved"
TARGET="$target"
# Identity is explicit: berth never guesses which estate it is acting on.
# The one convenience: a single estate/*.json is used without being asked.
if [ -z "${ESTATE:-}" ]; then
local n; n=$(ls ../estate/*.json 2>/dev/null | wc -l)
if [ "$n" = "1" ]; then
ESTATE=$(basename "$(ls ../estate/*.json)" .json)
else
echo "ESTATE is not set and estate/ holds $n candidates — refusing to guess." >&2
echo "available: $(ls ../estate/*.json 2>/dev/null | xargs -n1 basename | sed 's/\.json$//' | tr '\n' ' ')" >&2
echo "set it: make estate show ESTATE=<name>, or ESTATE= in ctrl/.env" >&2
exit 1
fi
fi
ESTATE_FILE="../estate/${ESTATE}.json"
if [ ! -f "$ESTATE_FILE" ]; then
echo "no such estate: estate/${ESTATE}.json" >&2
echo "available: $(ls ../estate/*.json 2>/dev/null | xargs -n1 basename | sed 's/\.json$//' | tr '\n' ' ')" >&2
exit 1
fi
# Facts come from the estate file, never restated in a target env.
DOMAIN=$(estate_get "domain")
HOST="${HOST:-$(estate_get "host")}"
HOST_ADMIN="${HOST_ADMIN:-$(estate_get "host_admin")}"
# Workspace == target, so the two can never mean different things.
TOFU_WORKSPACE="${TOFU_WORKSPACE:-$TARGET}"
}