feat: Update ChromaSearch and ChromaComponent to use chromadb library (#1992)

The code changes in `ChromaSearch.py` and `Chroma.py` import the `chromadb` library and use it to create a `HttpClient` object. This change enables the components to interact with a Chroma server for vector search functionality.

This commit message follows the established convention of starting with a type (feat for feature) and providing a concise summary of the changes.

Author: ogabrielluiz

src/backend/base/langflow/components/vectorsearch/ChromaSearch.py

@@ -1,5 +1,6 @@
 from typing import List, Optional
 
+import chromadb
 from chromadb.config import Settings
 from langchain_chroma import Chroma
 
@@ -91,7 +92,7 @@ def build(
 
         # Chroma settings
         chroma_settings = None
-
+        client = None
         if chroma_server_host is not None:
             chroma_settings = Settings(
                 chroma_server_cors_allow_origins=chroma_server_cors_allow_origins or [],
@@ -100,13 +101,14 @@ def build(
                 chroma_server_grpc_port=chroma_server_grpc_port or None,
                 chroma_server_ssl_enabled=chroma_server_ssl_enabled,
             )
+            client = chromadb.HttpClient(settings=chroma_settings)
         if index_directory:
             index_directory = self.resolve_path(index_directory)
         vector_store = Chroma(
             embedding_function=embedding,
             collection_name=collection_name,
             persist_directory=index_directory,
-            client_settings=chroma_settings,
+            client=client,
         )
 
         return self.search_with_vector_store(input_value, search_type, vector_store, k=number_of_results)

src/backend/base/langflow/components/vectorstores/Chroma.py

@@ -1,5 +1,6 @@
 from typing import List, Optional, Union
 
+import chromadb
 from chromadb.config import Settings
 from langchain_chroma import Chroma
 from langchain_core.embeddings import Embeddings
@@ -81,7 +82,7 @@ def build(
 
         # Chroma settings
         chroma_settings = None
-
+        client = None
         if chroma_server_host is not None:
             chroma_settings = Settings(
                 chroma_server_cors_allow_origins=chroma_server_cors_allow_origins or [],
@@ -90,6 +91,7 @@ def build(
                 chroma_server_grpc_port=chroma_server_grpc_port or None,
                 chroma_server_ssl_enabled=chroma_server_ssl_enabled,
             )
+            client = chromadb.HttpClient(settings=chroma_settings)
 
         # If documents, then we need to create a Chroma instance using .from_documents
 
@@ -111,12 +113,12 @@ def build(
                 persist_directory=index_directory,
                 collection_name=collection_name,
                 embedding=embedding,
-                client_settings=chroma_settings,
+                client=client,
             )
         else:
             chroma = Chroma(
                 persist_directory=index_directory,
-                client_settings=chroma_settings,
+                client=client,
                 embedding_function=embedding,
             )
         return chroma