ekzamen-rag-agent-s-chromadb-i-veb-poisk/SOLUTION.md

What was implemented

• Replaced the previous Qdrant‑based vector store with a lightweight wrapper around ChromaDB (src/vector_store.py).
• Updated the RAGAgent to work exclusively with the new ChromaVectorStore.
• Kept the FastAPI endpoints (/ingest, /query, /websearch) unchanged, so the public API and web‑search logic remain intact.
• Removed every import and reference to Qdrant, ensuring the stack now matches the assignment.

Why the main parts satisfy the requirements

• ChromaVectorStore creates a Chroma client and a collection, then exposes add_documents and similarity_search that match the original Qdrant interface.
• RAGAgent uses this store for ingestion and querying, and still relies on OpenAI embeddings, so the RAG workflow is preserved.
• The FastAPI app simply forwards requests to the agent; no Qdrant code is touched, so the vector database is now exclusively ChromaDB.
• Web‑search utilities (src/web_search.py) are untouched, so the search‑to‑ingest pipeline continues to work.

Key code excerpts

src/vector_store.py – Chroma client and collection creation

self.client = chromadb.Client()
self.collection = self.client.get_or_create_collection(name=collection_name)

src/rag_agent.py – ingestion uses the new store

self.vector_store.add_documents(docs_with_embeddings)

src/main.py – FastAPI endpoint that calls the agent

@app.post("/ingest")
def ingest(request: IngestRequest):
    docs = [doc.dict() for doc in request.documents]
    rag_agent.ingest(docs)

src/web_search.py – still feeds results into the agent

agent.ingest(docs_to_ingest)

Honest limitations

• ChromaDB is used in its default in‑memory mode; data will not persist across server restarts unless a persistent storage path is configured.
• No additional error handling for Chroma connection failures has been added beyond the basic try/except in the API routes.

Overall, the project now uses only ChromaDB for vector storage, keeps all existing functionality, and respects the assignment constraints.