(core) Renaming installationId metadata for checkUpdateAPI telemetry endpoint.

Summary:
CheckUpdateAPI is now storing client's installation id in a new field called 'deploymentId'.
Previously it was using installationId which is reserved (and overriden) by the home server.

Test Plan: Existing and manual

Reviewers: paulfitz

Reviewed By: paulfitz

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D4268

app/common/Telemetry.ts

@@ -1746,7 +1746,7 @@ export const TelemetryContracts: TelemetryContracts = {
     minimumTelemetryLevel: Level.limited,
     retentionPeriod: 'indefinitely',
     metadataContracts: {
-      installationId: {
+      deploymentId: {
         description: 'The installation id of the client.',
         dataType: 'string',
       },

app/server/lib/Telemetry.ts

@@ -334,6 +334,17 @@ export class Telemetry implements ITelemetry {
     try {
       this._numPendingForwardEventRequests += 1;
       const {category: eventCategory} = TelemetryContracts[event];
+
+      if (metadata) {
+        if ('installationId' in metadata ||
+            'eventSource' in metadata ||
+            'eventName' in metadata ||
+            'eventCategory' in metadata)
+        {
+          throw new Error('metadata contains reserved keys');
+        }
+      }
+
       await this._doForwardEvent(JSON.stringify({
         event,
         metadata: {

app/server/lib/UpdateManager.ts

@@ -86,7 +86,7 @@ export class UpdateManager {
 
       // This is the most interesting part for us, to track installation ids and match them
       // with the version of the client. Won't be send without telemetry opt in.
-      const installationId = optStringParam(
+      const deploymentId = optStringParam(
         payload("installationId"),
         "installationId"
       );
@@ -104,8 +104,8 @@ export class UpdateManager {
         .getTelemetry()
         .logEvent(req as RequestWithLogin, "checkedUpdateAPI", {
           full: {
-            installationId,
-            deploymentType,
+            deploymentId,
+            deploymentType
           },
         });