🚧 back: preparing attempt at route statistics, non functional without fastify upgrade (#762)

tdrive/backend/node/src/core/platform/services/diagnostics/index.ts

@@ -8,6 +8,7 @@ import diagnostics, {
   getConfig as getDiagnosticsGetConfig,
   TDiagnosticTag,
 } from "../../framework/api/diagnostics";
+import registerFastifyRoutesDiagnosticsProvider from "./web/provider";
 
 /**
  * The diagnostics service exposes endpoint that are of use for operational reasons.
@@ -29,7 +30,9 @@ export default class DiagnosticsService extends TdriveService<DiagnosticsService
   public async doInit(): Promise<this> {
     this.service = new DiagnosticsServiceImpl();
     const fastify = this.context.getProvider<WebServerAPI>("webserver").getServer();
+
     registerBasicProviders();
+    registerFastifyRoutesDiagnosticsProvider(fastify);
 
     fastify.register((instance, _opts, next) => {
       web(instance, { prefix: this.prefix });

tdrive/backend/node/src/core/platform/services/diagnostics/web/provider.ts

@@ -0,0 +1,23 @@
+import diagnostics from "../../../framework/api/diagnostics";
+
+export default fastify => {
+  // TODO: registering @fastify/routes-stats creates errors (performance mark not found)
+  // on the request performance marks, the hook doesn't seem to be called for every route
+  // and some of the more important ones like browse start failing...
+  // Version tested had to be 3.4.0 because 4+ needs Fastify 5.
+  return;
+  // Don't require it at all until it's fixed
+  // eslint-disable-next-line @typescript-eslint/no-var-requires
+  fastify.register(require("@fastify/routes-stats"), {
+    printInterval: 4000, // milliseconds
+    decoratorName: "performanceMarked", // decorator is set to true if a performace.mark was called for the request
+  });
+  diagnostics.registerProviders({
+    key: "fastify-routes",
+    tags: ["stats", "stats-full"],
+    async get() {
+      fastify.measurements();
+      return { ok: true, ...fastify.stats() };
+    },
+  });
+};