(core) Tweak telemetry

Summary: Adjusts the level of telemetry collected from Grist SaaS.

Test Plan: Tested manually.

Reviewers: paulfitz

Reviewed By: paulfitz

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D3899

app/server/lib/serverUtils.ts

@@ -163,6 +163,20 @@ export function getLogMetaFromDocSession(docSession: OptDocSession) {
   };
 }
 
+/**
+ * Extract telemetry metadata from session.
+ */
+export function getTelemetryMetaFromDocSession(docSession: OptDocSession) {
+  const client = docSession.client;
+  const access = getDocSessionAccessOrNull(docSession);
+  const user = getDocSessionUser(docSession);
+  return {
+    access,
+    ...(user ? {userId: user.id} : {}),
+    ...(client ? client.getFullTelemetryMeta() : {}),   // Client if present will repeat and add to user info.
+  };
+}
+
 /**
  * Only offer choices of engine on experimental deployments (staging/dev).
  */