vector_db.py DOX

Purpose

• Own the vector_db.py helper module.
• This module wraps FAISS vector storage, retrieval, and comparator behavior.
• Keep this file-level DOX profile synchronized with vector_db.py because this directory is intentionally flat.

Ownership

• vector_db.py owns the runtime implementation.
• vector_db.py.dox.md owns durable notes about responsibilities, contracts, side effects, and verification for that implementation.
• Classes:
• MyFaiss (FAISS)
  • get_by_ids(self, ids: Sequence[str]) -> List[Document]
  • async aget_by_ids(self, ids: Sequence[str]) -> List[Document]
  • get_all_docs(self) -> dict[str, Document]
• VectorDB (no explicit base class)
  • async search_by_similarity_threshold(self, query: str, limit: int, threshold: float, filter: str=...)
  • async search_by_metadata(self, filter: str, limit: int=...) -> list[Document]
  • async insert_documents(self, docs: list[Document])
  • async delete_documents_by_ids(self, ids: list[str])
• Top-level functions:
• format_docs_plain(docs: list[Document]) -> list[str]
• cosine_normalizer(val: float) -> float
• get_comparator(condition: str)

Runtime Contracts

• Helper modules own reusable framework APIs and must preserve public callers unless all callers, tests, and docs are updated together.
• Update this file whenever public functions, classes, persistence behavior, path/security assumptions, side effects, or cross-module contracts change.
• Observed side-effect areas: filesystem deletion.
• Imported dependency areas include: agent, faiss, helpers, langchain.embeddings, langchain.storage, langchain_community.docstore.in_memory, langchain_community.vectorstores, langchain_community.vectorstores.utils, langchain_core.documents, simpleeval, typing.

Key Concepts

• Important called helpers/classes observed in the source: self.get_by_ids, agent.get_embedding_model, self._get_embeddings, faiss.IndexFlatIP, MyFaiss, get_comparator, self.db.get_all_docs, InMemoryByteStore, CacheBackedEmbeddings.from_bytes_store, self.db.asearch, comparator, guids.generate_id, zip, self.db.add_documents, self.db.aget_by_ids, simple_eval, self.embeddings.embed_query, InMemoryDocstore, self.db.adelete.
• Keep request/response, tool, or helper semantics documented here at the same time as source changes.

Work Guidance

• Preserve public helper APIs used by core code and plugins unless every caller is updated.
• Keep path, auth, secret, persistence, network, and subprocess behavior explicit and bounded.
• Prefer adding cohesive helper functions here only when behavior is reused across modules.

Verification

• Run targeted tests for changed helper behavior; run security regressions for auth, filesystem, WebSocket, tunnel, upload, or secret-handling helpers.
• No direct test reference was found by name search; choose the nearest behavioral test or perform a focused smoke check.

Child DOX Index

No child DOX files.