report errors to sentry

server/index.ts

@@ -0,0 +1,106 @@
+import express from "express";
+import compression from "compression";
+import morgan from "morgan";
+import { createRequestHandler } from "@remix-run/express";
+import * as Sentry from "@sentry/node";
+
+import config from "~/config/config.server";
+import logger from "~/utils/logger.server";
+import { adminMiddleware, setupBullBoard } from "./queues";
+import { registerSentry, sentryLoadContext } from "./sentry-remix";
+
+Sentry.init({
+	dsn: config.sentry.dsn,
+	integrations: [new Sentry.Integrations.Http({ tracing: true })],
+	tracesSampleRate: 1.0,
+	environment: process.env.NODE_ENV,
+});
+
+const app = express();
+app.use((req, res, next) => {
+	res.set("X-Fly-Region", process.env.FLY_REGION ?? "unknown");
+	res.set("Strict-Transport-Security", `max-age=31536000; preload`);
+	next();
+});
+
+// replay non-GET/HEAD/OPTIONS requests to the primary Fly.io region rather than read-only Postgres instances
+// learn more: https://fly.io/docs/getting-started/multi-region-databases/#replay-the-request
+app.all("*", (req, res, next) => {
+	const { method, path: pathname } = req;
+	const { PRIMARY_REGION, FLY_REGION } = process.env;
+	const isMethodReplayable = !["GET", "OPTIONS", "HEAD"].includes(method);
+	const isReadOnlyRegion = FLY_REGION && PRIMARY_REGION && FLY_REGION !== PRIMARY_REGION;
+	const shouldReplay = isMethodReplayable && isReadOnlyRegion;
+
+	if (!shouldReplay) {
+		return next();
+	}
+
+	const logInfo = {
+		pathname,
+		method,
+		PRIMARY_REGION,
+		FLY_REGION,
+	};
+	logger.info("Replaying:", logInfo);
+	res.set("fly-replay", `region=${PRIMARY_REGION}`);
+	return res.sendStatus(409);
+});
+
+app.disable("x-powered-by");
+app.use(
+	compression({
+		filter(req, res) {
+			const contentTypeHeader = res.getHeader("Content-Type");
+			let contentType = "";
+			if (contentTypeHeader) {
+				if (Array.isArray(contentTypeHeader)) {
+					contentType = contentTypeHeader.join(" ");
+				} else {
+					contentType = String(contentTypeHeader);
+				}
+			}
+
+			if (contentType.includes("text/event-stream")) {
+				return false;
+			}
+
+			return true;
+		},
+	}),
+);
+
+// cache static and immutable assets
+app.use(express.static("public", { immutable: true, maxAge: "1y" }));
+
+// setup background queues and cron jobs
+app.use("/admin", adminMiddleware);
+app.use("/admin/queues", setupBullBoard().getRouter());
+
+app.use(morgan("tiny"));
+
+app.all("*", (req, res, next) => {
+	if (process.env.NODE_ENV !== "production") {
+		purgeRequireCache();
+	}
+
+	return createRequestHandler({
+		build: registerSentry(require("../build")),
+		mode: process.env.NODE_ENV,
+		getLoadContext: sentryLoadContext,
+	})(req, res, next);
+});
+
+const port = process.env.PORT || 3000;
+app.listen(port, () => {
+	logger.info(`Server listening on port ${port}`);
+});
+
+function purgeRequireCache() {
+	const resolved = require.resolve("../build");
+	for (const key in require.cache) {
+		if (key.startsWith(resolved)) {
+			delete require.cache[key];
+		}
+	}
+}