diff --git a/src/util/util/Sentry.ts b/src/util/util/Sentry.ts
new file mode 100644
index 00000000..3e7bb97b
--- /dev/null
+++ b/src/util/util/Sentry.ts
@@ -0,0 +1,102 @@
+import { Config } from "./Config";
+import { yellow } from "picocolors";
+
+import express from "express";
+import * as SentryNode from "@sentry/node";
+import * as Tracing from "@sentry/tracing";
+import * as Integrations from "@sentry/integrations";
+
+// Work around for when bundle calls api/etc
+let errorHandlersUsed = false;
+
+export const Sentry = {
+ /** Call BEFORE registering your routes */
+ init: async (app?: express.Application) => {
+ const { enabled, endpoint, traceSampleRate, environment } =
+ Config.get().sentry;
+ if (!enabled) return;
+
+ if (!!SentryNode.getCurrentHub().getClient()) return; // we've already initialised sentry
+
+ console.log("[Sentry] Enabling sentry...");
+
+ if (traceSampleRate >= 0.8) {
+ console.log(
+ `[Sentry] ${yellow(
+ "Your sentry trace sampling rate is >= 80%. For large loads, this may degrade performance.",
+ )}`,
+ );
+ }
+
+ SentryNode.init({
+ dsn: endpoint,
+ integrations: [
+ new SentryNode.Integrations.Http({ tracing: true }),
+ new Tracing.Integrations.Express({ app }),
+ new Tracing.Integrations.Mysql(),
+ new Integrations.RewriteFrames({
+ root: __dirname,
+ }),
+ ],
+ tracesSampleRate: traceSampleRate, // naming?
+ environment,
+ });
+
+ SentryNode.addGlobalEventProcessor((event, hint) => {
+ if (event.transaction) {
+ // Rewrite things that look like IDs to `:id` for sentry
+ event.transaction = event.transaction
+ .split("/")
+ .map((x) => (!parseInt(x) ? x : ":id"))
+ .join("/");
+ }
+
+ // TODO: does this even do anything?
+ delete event.request?.cookies;
+ if (event.request?.headers) {
+ delete event.request.headers["X-Real-Ip"];
+ delete event.request.headers["X-Forwarded-For"];
+ delete event.request.headers["X-Forwarded-Host"];
+ delete event.request.headers["X-Super-Properties"];
+ }
+
+ if (event.breadcrumbs) {
+ event.breadcrumbs = event.breadcrumbs.filter((x) => {
+ // Filter breadcrumbs that we don't care about
+ if (x.message?.includes("identified as")) return false;
+ if (x.message?.includes("[WebSocket] closed")) return false;
+ if (
+ x.message?.includes(
+ "Got Resume -> cancel not implemented",
+ )
+ )
+ return false;
+ if (x.message?.includes("[Gateway] New connection from"))
+ return false;
+
+ return true;
+ });
+ }
+
+ return event;
+ });
+
+ if (app) {
+ app.use(SentryNode.Handlers.requestHandler());
+ app.use(SentryNode.Handlers.tracingHandler());
+ }
+ },
+
+ /** Call AFTER registering your routes */
+ errorHandler: (app: express.Application) => {
+ if (!Config.get().sentry.enabled) return;
+ if (errorHandlersUsed) return;
+ errorHandlersUsed = true;
+
+ app.use(SentryNode.Handlers.errorHandler());
+ app.use(function onError(err: any, req: any, res: any, next: any) {
+ res.statusCode = 500;
+ res.end(res.sentry + "\n");
+ });
+ },
+};
diff --git a/src/util/util/index.ts b/src/util/util/index.ts
index 01ef4eae..0012579f 100644
--- a/src/util/util/index.ts
+++ b/src/util/util/index.ts
@@ -20,3 +20,4 @@ export * from "./String";
export * from "./Array";
export * from "./TraverseDirectory";
export * from "./InvisibleCharacters";
+export * from "./Sentry";
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