everything-dev/dist/infra/preflight.mjs

A consolidated product package for building Module Federation apps with oRPC APIs.

import { Data, Effect } from "effect";
import { createConnection } from "node:net";

//#region src/infra/preflight.ts
var PreflightConnectionError = class extends Data.TaggedError("PreflightConnectionError") {
	get message() {
		return `Postgres connection failed: ${this.cause instanceof Error ? this.cause.message : String(this.cause)}`;
	}
};
const scheduleTimeout = (ms, fn) => setTimeout(fn, ms);
function parseLocalUrl(url) {
	try {
		const parsed = new URL(url);
		const host = parsed.hostname;
		if (host !== "localhost" && host !== "127.0.0.1" && host !== "::1") return null;
		const port = Number.parseInt(parsed.port, 10);
		if (Number.isNaN(port)) return {
			host,
			port: parsed.protocol === "redis:" ? 6379 : 5432
		};
		return {
			host,
			port
		};
	} catch {
		return null;
	}
}
function checkTcpReachable(host, port, timeoutMs = 2e3) {
	return Effect.callback((resume) => {
		const socket = createConnection({
			host,
			port
		});
		const timer = scheduleTimeout(timeoutMs, () => {
			socket.destroy();
			resume(Effect.succeed(false));
		});
		socket.once("connect", () => {
			clearTimeout(timer);
			socket.destroy();
			resume(Effect.succeed(true));
		});
		socket.once("error", () => {
			clearTimeout(timer);
			socket.destroy();
			resume(Effect.succeed(false));
		});
	});
}
function checkPgConnection(url) {
	return Effect.gen(function* () {
		if (!(yield* checkTcpReachable(new URL(url).hostname, Number(new URL(url).port) || 5432, 4e3))) return false;
		return yield* Effect.tryPromise({
			try: async () => {
				const { Pool } = await import("pg");
				const pool = new Pool({
					connectionString: url,
					connectionTimeoutMillis: 3e3
				});
				try {
					const client = await pool.connect();
					try {
						await client.query("SELECT 1");
						return true;
					} finally {
						client.release();
					}
				} finally {
					await pool.end().catch(() => {});
				}
			},
			catch: (cause) => new PreflightConnectionError({ cause })
		}).pipe(Effect.orElseSucceed(() => false));
	});
}
function preflightTargetsFromEnv(env) {
	const targets = [];
	for (const [secret, value] of Object.entries(env)) {
		if (!value) continue;
		if (secret.endsWith("_DATABASE_URL")) {
			const parsed = parseLocalUrl(value);
			if (parsed) targets.push({
				secret,
				host: parsed.host,
				port: parsed.port,
				kind: "postgres",
				url: value
			});
		} else if (secret.endsWith("_REDIS_URL")) {
			const parsed = parseLocalUrl(value);
			if (parsed) targets.push({
				secret,
				host: parsed.host,
				port: parsed.port,
				kind: "redis",
				url: value
			});
		}
	}
	return targets;
}
function preflightLocalInfra(env, overrides) {
	const targets = preflightTargetsFromEnv(overrides ? {
		...env,
		...overrides
	} : env);
	if (targets.length === 0) return Effect.succeed([]);
	return Effect.forEach(targets, (target) => Effect.gen(function* () {
		if (target.kind === "postgres") {
			if (yield* checkPgConnection(target.url)) return null;
			const tcpOk = yield* checkTcpReachable(target.host, target.port);
			const pluginContext = target.secret === "API_DATABASE_URL" || target.secret === "AUTH_DATABASE_URL" ? " Run `docker compose up -d --wait` to start local Postgres." : ` The plugin for ${target.secret} runs inside the local host process, so this DB must be reachable. Run \`docker compose up -d --wait\` to start local Postgres.`;
			if (tcpOk) return {
				secret: target.secret,
				host: target.host,
				port: target.port,
				error: `${target.secret} at ${target.host}:${target.port} is reachable but Postgres connection failed. Check credentials and database name.${pluginContext}`,
				tcpReachable: true
			};
			return {
				secret: target.secret,
				host: target.host,
				port: target.port,
				error: `${target.secret} points to ${target.host}:${target.port} but nothing is listening.${pluginContext}`,
				tcpReachable: false
			};
		}
		if (yield* checkTcpReachable(target.host, target.port)) return null;
		return {
			secret: target.secret,
			host: target.host,
			port: target.port,
			error: `${target.secret} points to ${target.host}:${target.port} but nothing is listening`,
			tcpReachable: false
		};
	}), { concurrency: "unbounded" }).pipe(Effect.map((results) => results.filter((r) => r !== null)));
}

//#endregion
export { preflightLocalInfra };
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