Fix bug where auth info for database was getting lost (#304)

Author: laurenzlong

integration_test/functions/src/database-tests.ts

@@ -72,5 +72,9 @@ export const databaseTests: any = functions.database
         expectEq((context as any).action, undefined)
       )
 
+      .it('should have admin authType', (change, context) => {
+        expectEq(context.authType, 'ADMIN');
+      })
+
       .run(ctx.params[testIdFieldName], ch, ctx);
   });

src/cloud-functions.ts

@@ -236,14 +236,10 @@ export function makeCloudFunction<EventData>({
   let cloudFunctionNewSignature: any = (data: any, context: any) => {
     if (legacyEventType && context.eventType === legacyEventType) {
       // v1beta1 event flow has different format for context, transform them to new format.
-      context = {
-        eventId: context.eventId,
-        timestamp: context.timestamp,
-        eventType: provider + '.' + eventType,
-        resource: {
-          service: service,
-          name: context.resource,
-        },
+      context.eventType = provider + '.' + eventType;
+      context.resource = {
+        service: service,
+        name: context.resource,
       };
     }