70 lines
2.4 KiB
TypeScript
70 lines
2.4 KiB
TypeScript
import { resolve } from 'node:path';
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import {
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CANARY_DEFAULT_PORT,
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CANARY_DEFAULT_UPSTREAM_PORT,
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type CanaryGatewayOptions,
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} from './canary-gateway.js';
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export interface CanaryRuntimeEnvironment {
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readonly CANARY_DIST_DIR?: string;
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readonly CANARY_PORT?: string;
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readonly CANARY_UPSTREAM_PORT?: string;
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readonly MULTI_SIMADMIN_GATEWAY_HOST?: string;
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readonly MULTI_SIMADMIN_GATEWAY_ALLOWED_HOSTS?: string;
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readonly MULTI_SIMADMIN_GATEWAY_TOKEN?: string;
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readonly MULTI_SIMADMIN_CUTOVER_ACK?: string;
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}
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export const PRODUCTION_CUTOVER_ACK = 'I ACKNOWLEDGE MULTI-SIMADMIN OWNS PORT 8788';
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function environmentPort(value: string | undefined, name: string, fallback: number): number {
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if (value === undefined || value === '') return fallback;
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const port = Number(value);
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if (!Number.isInteger(port) || port < 1 || port > 65_535)
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throw new Error(`${name} must be an integer port`);
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return port;
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}
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export function readCanaryRuntimeOptions(
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environment: CanaryRuntimeEnvironment,
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): CanaryGatewayOptions {
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const gatewayToken = environment.MULTI_SIMADMIN_GATEWAY_TOKEN;
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if (
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!gatewayToken ||
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Buffer.byteLength(gatewayToken) < 32 ||
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Buffer.byteLength(gatewayToken) > 512
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)
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throw new Error('Gateway token must contain between 32 and 512 bytes');
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return Object.freeze({
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distDir: resolve(environment.CANARY_DIST_DIR ?? 'apps/web/dist'),
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port: environmentPort(environment.CANARY_PORT, 'CANARY_PORT', CANARY_DEFAULT_PORT),
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upstreamPort: environmentPort(
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environment.CANARY_UPSTREAM_PORT,
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'CANARY_UPSTREAM_PORT',
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CANARY_DEFAULT_UPSTREAM_PORT,
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),
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gatewayToken,
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});
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}
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export function readProductionGatewayRuntimeOptions(
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environment: CanaryRuntimeEnvironment,
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): CanaryGatewayOptions {
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if (environment.MULTI_SIMADMIN_CUTOVER_ACK !== PRODUCTION_CUTOVER_ACK) {
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throw new Error(
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`Production gateway requires MULTI_SIMADMIN_CUTOVER_ACK=${PRODUCTION_CUTOVER_ACK}`,
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);
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}
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const options = readCanaryRuntimeOptions({ ...environment, CANARY_PORT: '8788' });
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const host = environment.MULTI_SIMADMIN_GATEWAY_HOST ?? options.host;
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const allowedHosts = environment.MULTI_SIMADMIN_GATEWAY_ALLOWED_HOSTS?.split(',')
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.map((value) => value.trim())
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.filter(Boolean);
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return Object.freeze({
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...options,
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...(host === undefined ? {} : { host }),
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...(allowedHosts === undefined ? {} : { allowedHosts }),
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ownsProductionPort: true,
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});
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}
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