Lfoss 2047 v1.6.0

[deon-sanchez]

Summary by CodeRabbit

• New Features

  • Knowledge Ingestion/Retrieval revamped (new names, options; embeddings toggle; lazy loading).
  • Docling-powered document processing with advanced OCR options.
  • Expanded file support (csv/json; updated File component); API exposes voice_mode_available.
  • Enhanced structured-output flows across starter projects.

• Bug Fixes

  • More reliable MCP config resolution and error messages.
  • Consistent memory retrieval ordering.
  • API Request now handles Data-wrapped bodies.

• Style

  • Unified API key/password labels.
  • Removed chat color/icon inputs; cleaner chat input text.

• Refactor

  • Removed Google Serper component; marked Claude 3 Sonnet (20240229) deprecated.
  • Adjusted text-file discovery (pdf excluded).

• Chores

  • Version bump to 1.6.0; dependency pins.
  • Windows scripts: explicit --env-file handling.
  • .env.example comment update.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Project version and dependency pins updated; Windows scripts adjust --env-file handling. MCP projects path resolution refactored; API schema adds voice_mode_available. File/Docling handling expanded and OCR flags adjusted. Knowledge Base components renamed/moved with lazy exports. Multiple UI label changes. Chat components simplified across starter projects. Google Serper component removed.

Changes

Cohort / File(s)	Summary
Packaging & Env /.env.example, /pyproject.toml	Updated comment default for LANGFLOW_FEATURE_MCP_COMPOSER; bumped version to 1.6.0; pinned composio deps to ==0.8.5 and switched composio-core → composio.
Windows scripts /scripts/windows/build_and_run.bat, /scripts/windows/build_and_run.ps1	Moved env-file usage to uv run; replaced param var with USE_ENV_FILE flag (bat); standardized --env-file handling.
MCP projects API /src/backend/base/langflow/api/v1/mcp_projects.py	Centralized config path resolution via get_config_path; added helpers to detect/remove servers by SSE URL; unified install/check flows; improved HTTP error mapping.
API Schema /src/backend/base/langflow/api/v1/schemas.py	Added ConfigResponse.voice_mode_available and mapping from settings.
Base constants/models/data utils .../base/constants.py, .../base/models/anthropic_constants.py, .../base/data/utils.py, .../base/data/docling_utils.py	Removed File/FileComponent from SKIPPED_COMPONENTS; marked claude-3-sonnet-20240229 deprecated in detailed metadata; adjusted TEXT_FILE_TYPES (add csv/json, drop pdf); OCR enablement now checks "None" sentinel.
Agents core .../base/agents/events.py, .../components/agents/agent.py	Input text content no longer prefixed with “Input:”; set agent_llm display_name to “Model Provider” during config update.
Data API request .../components/data/api_request.py	Added unwrapping of Data-wrapped bodies and list items; early return for certain dict items.
File component (Docling & formats) .../components/data/file.py	Reworked VALID_EXTENSIONS to start with TEXT_FILE_TYPES; OCR dropdown options now ["None","easyocr"] with default "easyocr"; subprocess args gated by non-None check.
Datastax import path .../components/datastax/__init__.py, .../components/datastax/astra_db.py	Switched dynamic import to astradb_vectorstore; relabeled api_endpoint field to “Astra DB API Endpoint”.
Knowledge Bases package .../components/knowledge_bases/__init__.py, .../components/knowledge_bases/ingestion.py, .../components/knowledge_bases/retrieval.py, .../components/data/__init__.py	Introduced lazy exports for KnowledgeIngestion/Retrieval; renamed/refactored KBIngestion/KBRetrieval classes, inputs/outputs, and logic; removed old KB components from data exports.
Memory helpers .../components/helpers/memory.py	Normalized last-N message slicing and ordering for DESC/ASC.
Structured Output (backend) .../components/processing/structured_output.py	DataFrame construction now uses raw outputs directly; added explicit empty fallback; adjusted single/multi output paths.
Component removal .../components/google/google_serper_api_core.py	Removed GoogleSerperAPICore component and all related logic.
UI label updates across components .../components/*/* (AgentQL, Azure OpenAI/Embeddings, Clickhouse, Confluence, deactivated ChatLiteLLM/Metal, Docling Inline, Elastic/OpenSearch, Firecrawl*, Google Generative AI Embeddings, HuggingFace*, IBM Watsonx*, Icosacomputing, LangWatch, Milvus, Olivya, Qdrant, Redis Chat, TwelveLabs, Upstash, Weaviate, WolframAlpha, Zep)	Standardized display_name strings for API keys/passwords to provider-specific labels; no logic changes.
Starter projects — Chat simplification .../initial_setup/starter_projects/Basic Prompt Chaining.json, Basic Prompting.json, Blog Writer.json, Meeting Summary.json	Removed chat styling inputs (background_color, chat_icon, text_color; and clean_data where present); expanded Files types (csv/json; pdf varies by file); updated ChatOutput code to template-based conversion and source helpers.
Starter projects — Knowledge Base rename Knowledge Ingestion.json, Knowledge Retrieval.json	Switched to KnowledgeIngestion/KnowledgeRetrieval components with new outputs/method names; added include_embeddings; updated wiring and metadata.
Starter projects — DocLing integration Document Q&A.json	Introduced Docling-based File processing with advanced options, new methods/outputs; expanded VALID_EXTENSIONS and OCR/pipeline UI.
Starter projects — Broader refactors Custom Component Generator.json, Financial Report Parser.json, Image Sentiment Analysis.json, Instagram Copywriter.json, Invoice Summarizer.json, Market Research.json, Memory Chatbot.json, News Aggregator.json	Rewrote ChatInput/ChatOutput to use data_template and helpers; added structured-output flows; memory/tooling integration in Agent; SaveToFile enhancements (News Aggregator); updated code hashes and file types.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  actor User
  participant API as API v1 (mcp_projects)
  participant Resolver as get_config_path
  participant FS as Filesystem

  User->>API: install_mcp_config(client, sse_url, server_cfg)
  API->>Resolver: resolve config path for client
  Resolver-->>API: Path or ValueError
  alt Path resolved
    API->>FS: check config_path.parent exists
    alt exists
      API->>FS: read/merge config, remove by sse_url, write
      API-->>User: 200 Installed/Reinstalled
    else missing
      API-->>User: 400 Client not installed
    end
  else Invalid client
    API-->>User: 400 Invalid client
  end

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sequenceDiagram
  autonumber
  participant User
  participant KR as KnowledgeRetrievalComponent
  participant KB as Vector DB (Chroma)
  User->>KR: retrieve_data(search_query, include_metadata, include_embeddings)
  alt search_query provided
    KR->>KB: query(query_text, top_k)
    KB-->>KR: ids, distances
    KR->>KB: get(ids, include=[metadatas, embeddings])
  else no query
    KR->>KB: get(all, include=[metadatas, embeddings])
  end
  KR-->>User: DataFrame with content [+metadata] [+_embeddings]

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sequenceDiagram
  autonumber
  participant UI as UI/Flow
  participant CO as ChatOutput
  participant Store as Message Store
  UI->>CO: message_response(input_value, files, data_template, session)
  CO->>CO: _validate_input()
  CO->>CO: convert_to_string() / _serialize_data()
  CO->>CO: _build_source(...)
  alt should_store_message
    CO->>Store: save Message
    Store-->>CO: stored Message
  end
  CO-->>UI: Message

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Estimated code review effort

🎯 5 (Critical) | ⏱️ ~120+ minutes

Possibly related PRs

• fix: disable mcp auto install for not installed applications, refactor mcp-projects logic #9599 — Overlapping edits to env defaults, pyproject versioning, MCP refactors, Windows scripts, and component/starter updates.
• fix: Knowledge base component refactor #9543 — Moves/refactors KBIngestion/KBRetrieval into knowledge_bases with updated exports and APIs, matching this PR’s KB changes.
• fix: Run docling processing in subprocess #9541 — Adds Docling subprocess flow and VALID_EXTENSIONS/OCR updates in File component, aligning with this PR’s File/Docling changes.

✨ Finishing Touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch lfoss-2047-v1.6.0

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[sonarqubecloud]

Quality Gate failed

Failed conditions
4 Security Hotspots
D Reliability Rating on New Code (required ≥ A)

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