k8s multiple regions config

scripts/render-regional-k8s.sh

@@ -4,21 +4,61 @@ ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 ENV_FILE="${1:-$ROOT/k8s/regional/regions.env}"
 OUT="${2:-$ROOT/k8s/regional/rendered}"
 [[ -f "$ENV_FILE" ]] || { echo "Missing $ENV_FILE (copy regions.env.example)" >&2; exit 2; }
-set -a; source "$ENV_FILE"; set +a
+set -a
+# shellcheck disable=SC1090
+source "$ENV_FILE"
+set +a
 command -v envsubst >/dev/null || { echo "envsubst is required (gettext package)" >&2; exit 2; }
-rm -rf "$OUT"; mkdir -p "$OUT"
-render_region() {
-  local prefix="$1"
+
+XAI_TARGETS="${XAI_TARGETS:-${XAI_REGIONS:-}}"
+[[ -n "${XAI_TARGETS// }" ]] || {
+  echo 'XAI_TARGETS is required. Example: XAI_TARGETS="ORD IAD GRU"' >&2
+  exit 2
+}
+
+rm -rf "$OUT"
+mkdir -p "$OUT"
+
+required_target_var() {
+  local target="$1" suffix="$2" var value
+  var="${target}_${suffix}"
+  value="${!var:-}"
+  [[ -n "$value" ]] || { echo "Missing required configuration: $var" >&2; exit 2; }
+  printf '%s' "$value"
+}
+
+render_target() {
+  local target="$1"
+  [[ "$target" =~ ^[A-Za-z_][A-Za-z0-9_]*$ ]] || {
+    echo "Invalid XAI target '$target'. Use letters, numbers and underscores only." >&2
+    exit 2
+  }
+
   export REGION_ID REGION_REPLICAS XAI_UPSTREAM_URL XAI_SECRET_NAME
-  REGION_ID="$(eval echo \"\${${prefix}_REGION_ID}\")"
-  REGION_REPLICAS="$(eval echo \"\${${prefix}_REGION_REPLICAS}\")"
-  XAI_UPSTREAM_URL="$(eval echo \"\${${prefix}_XAI_UPSTREAM_URL}\")"
-  XAI_SECRET_NAME="$(eval echo \"\${${prefix}_XAI_SECRET_NAME}\")"
+  REGION_ID="$(required_target_var "$target" REGION_ID)"
+  REGION_REPLICAS="$(required_target_var "$target" REGION_REPLICAS)"
+  XAI_UPSTREAM_URL="$(required_target_var "$target" XAI_UPSTREAM_URL)"
+  XAI_SECRET_NAME="$(required_target_var "$target" XAI_SECRET_NAME)"
+
+  [[ "$REGION_ID" =~ ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$ ]] || {
+    echo "Invalid ${target}_REGION_ID='$REGION_ID'. Use a lowercase Kubernetes label." >&2
+    exit 2
+  }
+  [[ ! -e "$OUT/deployment-${REGION_ID}.yaml" ]] || {
+    echo "Duplicate REGION_ID '$REGION_ID'. Each target must have a unique REGION_ID." >&2
+    echo "For multiple pools in one OCI region use ids such as ord-primary and ord-secondary." >&2
+    exit 2
+  }
+
   envsubst < "$ROOT/k8s/regional/deployment-region.yaml" > "$OUT/deployment-${REGION_ID}.yaml"
   envsubst < "$ROOT/k8s/regional/hpa-region.yaml" > "$OUT/hpa-${REGION_ID}.yaml"
+  echo "Rendered target=$target region_id=$REGION_ID"
 }
-render_region ORD
-render_region IAD
+
+for target in $XAI_TARGETS; do
+  render_target "$target"
+done
+
 envsubst < "$ROOT/k8s/regional/service.yaml" > "$OUT/service.yaml"
 envsubst < "$ROOT/k8s/regional/pdb.yaml" > "$OUT/pdb.yaml"
 echo "Rendered manifests in $OUT"