Support analytics data in user export bundle

GitOrigin-RevId: 49739297f40831cf035e2a9d4f3343a8cb2d7fdb

libraries/object-persistor/src/GcsPersistor.js

@@ -288,23 +288,25 @@ module.exports = class GcsPersistor extends AbstractPersistor {
     } while (query)
   }
 
-  async directorySize(bucketName, key) {
-    let files
-    const prefix = ensurePrefixIsDirectory(key)
-
+  async #listDirectory(bucketName, prefix) {
     try {
       const [response] = await this.storage
         .bucket(bucketName)
         .getFiles({ prefix })
-      files = response
+      return response
     } catch (err) {
       throw PersistorHelper.wrapError(
         err,
         'failed to list objects in GCS',
-        { bucketName, key },
+        { bucketName, prefix },
         ReadError
       )
     }
+  }
+
+  async directorySize(bucketName, key) {
+    const prefix = ensurePrefixIsDirectory(key)
+    const files = await this.#listDirectory(bucketName, prefix)
 
     return files.reduce(
       (acc, file) => parseInt(file.metadata.size, 10) + acc,
@@ -312,6 +314,14 @@ module.exports = class GcsPersistor extends AbstractPersistor {
     )
   }
 
+  async listDirectoryKeys(bucketName, prefix) {
+    const files = await this.#listDirectory(
+      bucketName,
+      ensurePrefixIsDirectory(prefix)
+    )
+    return files.map(file => file.name)
+  }
+
   async checkIfObjectExists(bucketName, key) {
     try {
       const [response] = await this.storage