[Docs] Firestore indexing gcloud CLI not working for Embeddings, but Firestore CLI works

[theshivamlko]

Issue

I am using Firestore as DB for storing and retrieving for RAG.

The actual cli give on doc is not working . I tried different fixes with cli none work there always formatting issue.

gcloud firestore indexes composite create --project=gen-lang-client-0291573737 --collection-group=hr_documents --query-scope=COLLECTION --field-config=field-path=__name__,order=ASCENDING --field-config=field-path=embedding,vector-config='{"dimension":768,"flat":{}}' --database="(default)"

Error

ERROR: (gcloud.firestore.indexes.composite.create) Invalid value for [--field-config]: Exactly one of 'order' or 'array-config' must be specified for the fields with the following paths: [__name__ order=ASCENDING, embedding vector-config={"dimension":768,"flat":{}}].
PS C:\Users\Navoki\AndroidStudioProjects\genkit_rag_chromadb_flutter_app_example\genkit_rag_firestore_firebase_function\functions> 

Solution

I tried same solution with firebase cli with firestore.indexes.json and it work instantly. Retrieval is working now.

firestore.indexes.json

{
  "indexes": [
    {
      "collectionGroup": "hr_documents",
      "queryScope": "COLLECTION",
      "fields": [
        {
          "fieldPath": "__name__",
          "order": "ASCENDING"
        },
        {
          "fieldPath": "embedding",
          "vectorConfig": {
            "dimension": 768,
            "flat": {}
          }
        }
      ]
    }
  ]
}

Suggestion:

Update Doc here , and add instructions with Firebase CLI too
https://genkit.dev/docs/integrations/cloud-firestore/#populate-firestore-with-embeddings

Can i create PR with additional instruction to create Firestore indexes with Firebase CLI