feat: add mongodb provider

llama_stack/distributions/starter-gpu/build.yaml

@@ -26,6 +26,7 @@ distribution_spec:
     - provider_type: inline::milvus
     - provider_type: remote::chromadb
     - provider_type: remote::pgvector
+    - provider_type: remote::mongodb
     files:
     - provider_type: inline::localfs
     safety:

llama_stack/distributions/starter-gpu/run.yaml

@@ -129,6 +129,19 @@ providers:
       kvstore:
         type: sqlite
         db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/starter-gpu}/pgvector_registry.db
+  - provider_id: ${env.MONGODB_CONNECTION_STRING:+mongodb_atlas}
+    provider_type: remote::mongodb
+    config:
+      connection_string: ${env.MONGODB_CONNECTION_STRING}
+      database_name: llama_stack
+      index_name: vector_index
+      path_field: embedding
+      similarity_metric: cosine
+      max_pool_size: 100
+      timeout_ms: 30000
+      kvstore:
+        type: sqlite
+        db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/starter-gpu}/mongodb_registry.db
   files:
   - provider_id: meta-reference-files
     provider_type: inline::localfs