Merge pull request #880 from danielaskdd/refactor-api-server

Refactor api server by split it to smaller files

.gitignore

@@ -60,3 +60,6 @@ dickens/
 book.txt
 lightrag-dev/
 gui/
+
+# unit-test files
+test_*

lightrag/api/routers/__init__.py

@@ -0,0 +1,10 @@
+"""
+This module contains all the routers for the LightRAG API.
+"""
+
+from .document_routes import router as document_router
+from .query_routes import router as query_router
+from .graph_routes import router as graph_router
+from .ollama_api import OllamaAPI
+
+__all__ = ["document_router", "query_router", "graph_router", "OllamaAPI"]

lightrag/api/routers/document_routes.py

@@ -0,0 +1,770 @@
+"""
+This module contains all document-related routes for the LightRAG API.
+"""
+
+import asyncio
+import logging
+import os
+import aiofiles
+import shutil
+import traceback
+import pipmaster as pm
+from datetime import datetime
+from pathlib import Path
+from typing import Dict, List, Optional, Any
+
+from fastapi import APIRouter, BackgroundTasks, Depends, File, HTTPException, UploadFile
+from pydantic import BaseModel, Field, field_validator
+
+from lightrag import LightRAG
+from lightrag.base import DocProcessingStatus, DocStatus
+from ..utils_api import get_api_key_dependency
+
+
+router = APIRouter(prefix="/documents", tags=["documents"])
+
+# Global progress tracker
+scan_progress: Dict = {
+    "is_scanning": False,
+    "current_file": "",
+    "indexed_count": 0,
+    "total_files": 0,
+    "progress": 0,
+}
+
+# Lock for thread-safe operations
+progress_lock = asyncio.Lock()
+
+# Temporary file prefix
+temp_prefix = "__tmp__"
+
+
+class InsertTextRequest(BaseModel):
+    text: str = Field(
+        min_length=1,
+        description="The text to insert",
+    )
+
+    @field_validator("text", mode="after")
+    @classmethod
+    def strip_after(cls, text: str) -> str:
+        return text.strip()
+
+
+class InsertTextsRequest(BaseModel):
+    texts: list[str] = Field(
+        min_length=1,
+        description="The texts to insert",
+    )
+
+    @field_validator("texts", mode="after")
+    @classmethod
+    def strip_after(cls, texts: list[str]) -> list[str]:
+        return [text.strip() for text in texts]
+
+
+class InsertResponse(BaseModel):
+    status: str = Field(description="Status of the operation")
+    message: str = Field(description="Message describing the operation result")
+
+
+class DocStatusResponse(BaseModel):
+    @staticmethod
+    def format_datetime(dt: Any) -> Optional[str]:
+        if dt is None:
+            return None
+        if isinstance(dt, str):
+            return dt
+        return dt.isoformat()
+
+    """Response model for document status
+
+    Attributes:
+        id: Document identifier
+        content_summary: Summary of document content
+        content_length: Length of document content
+        status: Current processing status
+        created_at: Creation timestamp (ISO format string)
+        updated_at: Last update timestamp (ISO format string)
+        chunks_count: Number of chunks (optional)
+        error: Error message if any (optional)
+        metadata: Additional metadata (optional)
+    """
+
+    id: str
+    content_summary: str
+    content_length: int
+    status: DocStatus
+    created_at: str
+    updated_at: str
+    chunks_count: Optional[int] = None
+    error: Optional[str] = None
+    metadata: Optional[dict[str, Any]] = None
+
+
+class DocsStatusesResponse(BaseModel):
+    statuses: Dict[DocStatus, List[DocStatusResponse]] = {}
+
+
+class DocumentManager:
+    def __init__(
+        self,
+        input_dir: str,
+        supported_extensions: tuple = (
+            ".txt",
+            ".md",
+            ".pdf",
+            ".docx",
+            ".pptx",
+            ".xlsx",
+            ".rtf",  # Rich Text Format
+            ".odt",  # OpenDocument Text
+            ".tex",  # LaTeX
+            ".epub",  # Electronic Publication
+            ".html",  # HyperText Markup Language
+            ".htm",  # HyperText Markup Language
+            ".csv",  # Comma-Separated Values
+            ".json",  # JavaScript Object Notation
+            ".xml",  # eXtensible Markup Language
+            ".yaml",  # YAML Ain't Markup Language
+            ".yml",  # YAML
+            ".log",  # Log files
+            ".conf",  # Configuration files
+            ".ini",  # Initialization files
+            ".properties",  # Java properties files
+            ".sql",  # SQL scripts
+            ".bat",  # Batch files
+            ".sh",  # Shell scripts
+            ".c",  # C source code
+            ".cpp",  # C++ source code
+            ".py",  # Python source code
+            ".java",  # Java source code
+            ".js",  # JavaScript source code
+            ".ts",  # TypeScript source code
+            ".swift",  # Swift source code
+            ".go",  # Go source code
+            ".rb",  # Ruby source code
+            ".php",  # PHP source code
+            ".css",  # Cascading Style Sheets
+            ".scss",  # Sassy CSS
+            ".less",  # LESS CSS
+        ),
+    ):
+        self.input_dir = Path(input_dir)
+        self.supported_extensions = supported_extensions
+        self.indexed_files = set()
+
+        # Create input directory if it doesn't exist
+        self.input_dir.mkdir(parents=True, exist_ok=True)
+
+    def scan_directory_for_new_files(self) -> List[Path]:
+        """Scan input directory for new files"""
+        new_files = []
+        for ext in self.supported_extensions:
+            logging.info(f"Scanning for {ext} files in {self.input_dir}")
+            for file_path in self.input_dir.rglob(f"*{ext}"):
+                if file_path not in self.indexed_files:
+                    new_files.append(file_path)
+        return new_files
+
+    # def scan_directory(self) -> List[Path]:
+    #     new_files = []
+    #     for ext in self.supported_extensions:
+    #         for file_path in self.input_dir.rglob(f"*{ext}"):
+    #             new_files.append(file_path)
+    #     return new_files
+
+    def mark_as_indexed(self, file_path: Path):
+        self.indexed_files.add(file_path)
+
+    def is_supported_file(self, filename: str) -> bool:
+        return any(filename.lower().endswith(ext) for ext in self.supported_extensions)
+
+
+async def pipeline_enqueue_file(rag: LightRAG, file_path: Path) -> bool:
+    """Add a file to the queue for processing
+
+    Args:
+        rag: LightRAG instance
+        file_path: Path to the saved file
+    Returns:
+        bool: True if the file was successfully enqueued, False otherwise
+    """
+
+    try:
+        content = ""
+        ext = file_path.suffix.lower()
+
+        file = None
+        async with aiofiles.open(file_path, "rb") as f:
+            file = await f.read()
+
+        # Process based on file type
+        match ext:
+            case (
+                ".txt"
+                | ".md"
+                | ".html"
+                | ".htm"
+                | ".tex"
+                | ".json"
+                | ".xml"
+                | ".yaml"
+                | ".yml"
+                | ".rtf"
+                | ".odt"
+                | ".epub"
+                | ".csv"
+                | ".log"
+                | ".conf"
+                | ".ini"
+                | ".properties"
+                | ".sql"
+                | ".bat"
+                | ".sh"
+                | ".c"
+                | ".cpp"
+                | ".py"
+                | ".java"
+                | ".js"
+                | ".ts"
+                | ".swift"
+                | ".go"
+                | ".rb"
+                | ".php"
+                | ".css"
+                | ".scss"
+                | ".less"
+            ):
+                content = file.decode("utf-8")
+            case ".pdf":
+                if not pm.is_installed("pypdf2"):
+                    pm.install("pypdf2")
+                from PyPDF2 import PdfReader  # type: ignore
+                from io import BytesIO
+
+                pdf_file = BytesIO(file)
+                reader = PdfReader(pdf_file)
+                for page in reader.pages:
+                    content += page.extract_text() + "\n"
+            case ".docx":
+                if not pm.is_installed("docx"):
+                    pm.install("docx")
+                from docx import Document
+                from io import BytesIO
+
+                docx_file = BytesIO(file)
+                doc = Document(docx_file)
+                content = "\n".join([paragraph.text for paragraph in doc.paragraphs])
+            case ".pptx":
+                if not pm.is_installed("pptx"):
+                    pm.install("pptx")
+                from pptx import Presentation
+                from io import BytesIO
+
+                pptx_file = BytesIO(file)
+                prs = Presentation(pptx_file)
+                for slide in prs.slides:
+                    for shape in slide.shapes:
+                        if hasattr(shape, "text"):
+                            content += shape.text + "\n"
+            case ".xlsx":
+                if not pm.is_installed("openpyxl"):
+                    pm.install("openpyxl")
+                from openpyxl import load_workbook
+                from io import BytesIO
+
+                xlsx_file = BytesIO(file)
+                wb = load_workbook(xlsx_file)
+                for sheet in wb:
+                    content += f"Sheet: {sheet.title}\n"
+                    for row in sheet.iter_rows(values_only=True):
+                        content += (
+                            "\t".join(
+                                str(cell) if cell is not None else "" for cell in row
+                            )
+                            + "\n"
+                        )
+                    content += "\n"
+            case _:
+                logging.error(
+                    f"Unsupported file type: {file_path.name} (extension {ext})"
+                )
+                return False
+
+        # Insert into the RAG queue
+        if content:
+            await rag.apipeline_enqueue_documents(content)
+            logging.info(f"Successfully fetched and enqueued file: {file_path.name}")
+            return True
+        else:
+            logging.error(f"No content could be extracted from file: {file_path.name}")
+
+    except Exception as e:
+        logging.error(f"Error processing or enqueueing file {file_path.name}: {str(e)}")
+        logging.error(traceback.format_exc())
+    finally:
+        if file_path.name.startswith(temp_prefix):
+            try:
+                file_path.unlink()
+            except Exception as e:
+                logging.error(f"Error deleting file {file_path}: {str(e)}")
+    return False
+
+
+async def pipeline_index_file(rag: LightRAG, file_path: Path):
+    """Index a file
+
+    Args:
+        rag: LightRAG instance
+        file_path: Path to the saved file
+    """
+    try:
+        if await pipeline_enqueue_file(rag, file_path):
+            await rag.apipeline_process_enqueue_documents()
+
+    except Exception as e:
+        logging.error(f"Error indexing file {file_path.name}: {str(e)}")
+        logging.error(traceback.format_exc())
+
+
+async def pipeline_index_files(rag: LightRAG, file_paths: List[Path]):
+    """Index multiple files concurrently
+
+    Args:
+        rag: LightRAG instance
+        file_paths: Paths to the files to index
+    """
+    if not file_paths:
+        return
+    try:
+        enqueued = False
+
+        if len(file_paths) == 1:
+            enqueued = await pipeline_enqueue_file(rag, file_paths[0])
+        else:
+            tasks = [pipeline_enqueue_file(rag, path) for path in file_paths]
+            enqueued = any(await asyncio.gather(*tasks))
+
+        if enqueued:
+            await rag.apipeline_process_enqueue_documents()
+    except Exception as e:
+        logging.error(f"Error indexing files: {str(e)}")
+        logging.error(traceback.format_exc())
+
+
+async def pipeline_index_texts(rag: LightRAG, texts: List[str]):
+    """Index a list of texts
+
+    Args:
+        rag: LightRAG instance
+        texts: The texts to index
+    """
+    if not texts:
+        return
+    await rag.apipeline_enqueue_documents(texts)
+    await rag.apipeline_process_enqueue_documents()
+
+
+async def save_temp_file(input_dir: Path, file: UploadFile = File(...)) -> Path:
+    """Save the uploaded file to a temporary location
+
+    Args:
+        file: The uploaded file
+
+    Returns:
+        Path: The path to the saved file
+    """
+    # Generate unique filename to avoid conflicts
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    unique_filename = f"{temp_prefix}{timestamp}_{file.filename}"
+
+    # Create a temporary file to save the uploaded content
+    temp_path = input_dir / "temp" / unique_filename
+    temp_path.parent.mkdir(exist_ok=True)
+
+    # Save the file
+    with open(temp_path, "wb") as buffer:
+        shutil.copyfileobj(file.file, buffer)
+    return temp_path
+
+
+async def run_scanning_process(rag: LightRAG, doc_manager: DocumentManager):
+    """Background task to scan and index documents"""
+    try:
+        new_files = doc_manager.scan_directory_for_new_files()
+        scan_progress["total_files"] = len(new_files)
+
+        logging.info(f"Found {len(new_files)} new files to index.")
+        for file_path in new_files:
+            try:
+                async with progress_lock:
+                    scan_progress["current_file"] = os.path.basename(file_path)
+
+                await pipeline_index_file(rag, file_path)
+
+                async with progress_lock:
+                    scan_progress["indexed_count"] += 1
+                    scan_progress["progress"] = (
+                        scan_progress["indexed_count"] / scan_progress["total_files"]
+                    ) * 100
+
+            except Exception as e:
+                logging.error(f"Error indexing file {file_path}: {str(e)}")
+
+    except Exception as e:
+        logging.error(f"Error during scanning process: {str(e)}")
+    finally:
+        async with progress_lock:
+            scan_progress["is_scanning"] = False
+
+
+def create_document_routes(
+    rag: LightRAG, doc_manager: DocumentManager, api_key: Optional[str] = None
+):
+    optional_api_key = get_api_key_dependency(api_key)
+
+    @router.post("/scan", dependencies=[Depends(optional_api_key)])
+    async def scan_for_new_documents(background_tasks: BackgroundTasks):
+        """
+        Trigger the scanning process for new documents.
+
+        This endpoint initiates a background task that scans the input directory for new documents
+        and processes them. If a scanning process is already running, it returns a status indicating
+        that fact.
+
+        Returns:
+            dict: A dictionary containing the scanning status
+        """
+        async with progress_lock:
+            if scan_progress["is_scanning"]:
+                return {"status": "already_scanning"}
+
+            scan_progress["is_scanning"] = True
+            scan_progress["indexed_count"] = 0
+            scan_progress["progress"] = 0
+
+        # Start the scanning process in the background
+        background_tasks.add_task(run_scanning_process, rag, doc_manager)
+        return {"status": "scanning_started"}
+
+    @router.get("/scan-progress")
+    async def get_scan_progress():
+        """
+        Get the current progress of the document scanning process.
+
+        Returns:
+            dict: A dictionary containing the current scanning progress information including:
+                - is_scanning: Whether a scan is currently in progress
+                - current_file: The file currently being processed
+                - indexed_count: Number of files indexed so far
+                - total_files: Total number of files to process
+                - progress: Percentage of completion
+        """
+        async with progress_lock:
+            return scan_progress
+
+    @router.post("/upload", dependencies=[Depends(optional_api_key)])
+    async def upload_to_input_dir(
+        background_tasks: BackgroundTasks, file: UploadFile = File(...)
+    ):
+        """
+        Upload a file to the input directory and index it.
+
+        This API endpoint accepts a file through an HTTP POST request, checks if the
+        uploaded file is of a supported type, saves it in the specified input directory,
+        indexes it for retrieval, and returns a success status with relevant details.
+
+        Args:
+            background_tasks: FastAPI BackgroundTasks for async processing
+            file (UploadFile): The file to be uploaded. It must have an allowed extension.
+
+        Returns:
+            InsertResponse: A response object containing the upload status and a message.
+
+        Raises:
+            HTTPException: If the file type is not supported (400) or other errors occur (500).
+        """
+        try:
+            if not doc_manager.is_supported_file(file.filename):
+                raise HTTPException(
+                    status_code=400,
+                    detail=f"Unsupported file type. Supported types: {doc_manager.supported_extensions}",
+                )
+
+            file_path = doc_manager.input_dir / file.filename
+            with open(file_path, "wb") as buffer:
+                shutil.copyfileobj(file.file, buffer)
+
+            # Add to background tasks
+            background_tasks.add_task(pipeline_index_file, rag, file_path)
+
+            return InsertResponse(
+                status="success",
+                message=f"File '{file.filename}' uploaded successfully. Processing will continue in background.",
+            )
+        except Exception as e:
+            logging.error(f"Error /documents/upload: {file.filename}: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.post(
+        "/text", response_model=InsertResponse, dependencies=[Depends(optional_api_key)]
+    )
+    async def insert_text(
+        request: InsertTextRequest, background_tasks: BackgroundTasks
+    ):
+        """
+        Insert text into the RAG system.
+
+        This endpoint allows you to insert text data into the RAG system for later retrieval
+        and use in generating responses.
+
+        Args:
+            request (InsertTextRequest): The request body containing the text to be inserted.
+            background_tasks: FastAPI BackgroundTasks for async processing
+
+        Returns:
+            InsertResponse: A response object containing the status of the operation.
+
+        Raises:
+            HTTPException: If an error occurs during text processing (500).
+        """
+        try:
+            background_tasks.add_task(pipeline_index_texts, rag, [request.text])
+            return InsertResponse(
+                status="success",
+                message="Text successfully received. Processing will continue in background.",
+            )
+        except Exception as e:
+            logging.error(f"Error /documents/text: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.post(
+        "/texts",
+        response_model=InsertResponse,
+        dependencies=[Depends(optional_api_key)],
+    )
+    async def insert_texts(
+        request: InsertTextsRequest, background_tasks: BackgroundTasks
+    ):
+        """
+        Insert multiple texts into the RAG system.
+
+        This endpoint allows you to insert multiple text entries into the RAG system
+        in a single request.
+
+        Args:
+            request (InsertTextsRequest): The request body containing the list of texts.
+            background_tasks: FastAPI BackgroundTasks for async processing
+
+        Returns:
+            InsertResponse: A response object containing the status of the operation.
+
+        Raises:
+            HTTPException: If an error occurs during text processing (500).
+        """
+        try:
+            background_tasks.add_task(pipeline_index_texts, rag, request.texts)
+            return InsertResponse(
+                status="success",
+                message="Text successfully received. Processing will continue in background.",
+            )
+        except Exception as e:
+            logging.error(f"Error /documents/text: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.post(
+        "/file", response_model=InsertResponse, dependencies=[Depends(optional_api_key)]
+    )
+    async def insert_file(
+        background_tasks: BackgroundTasks, file: UploadFile = File(...)
+    ):
+        """
+        Insert a file directly into the RAG system.
+
+        This endpoint accepts a file upload and processes it for inclusion in the RAG system.
+        The file is saved temporarily and processed in the background.
+
+        Args:
+            background_tasks: FastAPI BackgroundTasks for async processing
+            file (UploadFile): The file to be processed
+
+        Returns:
+            InsertResponse: A response object containing the status of the operation.
+
+        Raises:
+            HTTPException: If the file type is not supported (400) or other errors occur (500).
+        """
+        try:
+            if not doc_manager.is_supported_file(file.filename):
+                raise HTTPException(
+                    status_code=400,
+                    detail=f"Unsupported file type. Supported types: {doc_manager.supported_extensions}",
+                )
+
+            temp_path = await save_temp_file(doc_manager.input_dir, file)
+
+            # Add to background tasks
+            background_tasks.add_task(pipeline_index_file, rag, temp_path)
+
+            return InsertResponse(
+                status="success",
+                message=f"File '{file.filename}' saved successfully. Processing will continue in background.",
+            )
+        except Exception as e:
+            logging.error(f"Error /documents/file: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.post(
+        "/file_batch",
+        response_model=InsertResponse,
+        dependencies=[Depends(optional_api_key)],
+    )
+    async def insert_batch(
+        background_tasks: BackgroundTasks, files: List[UploadFile] = File(...)
+    ):
+        """
+        Process multiple files in batch mode.
+
+        This endpoint allows uploading and processing multiple files simultaneously.
+        It handles partial successes and provides detailed feedback about failed files.
+
+        Args:
+            background_tasks: FastAPI BackgroundTasks for async processing
+            files (List[UploadFile]): List of files to process
+
+        Returns:
+            InsertResponse: A response object containing:
+                - status: "success", "partial_success", or "failure"
+                - message: Detailed information about the operation results
+
+        Raises:
+            HTTPException: If an error occurs during processing (500).
+        """
+        try:
+            inserted_count = 0
+            failed_files = []
+            temp_files = []
+
+            for file in files:
+                if doc_manager.is_supported_file(file.filename):
+                    # Create a temporary file to save the uploaded content
+                    temp_files.append(await save_temp_file(doc_manager.input_dir, file))
+                    inserted_count += 1
+                else:
+                    failed_files.append(f"{file.filename} (unsupported type)")
+
+            if temp_files:
+                background_tasks.add_task(pipeline_index_files, rag, temp_files)
+
+            # Prepare status message
+            if inserted_count == len(files):
+                status = "success"
+                status_message = f"Successfully inserted all {inserted_count} documents"
+            elif inserted_count > 0:
+                status = "partial_success"
+                status_message = f"Successfully inserted {inserted_count} out of {len(files)} documents"
+                if failed_files:
+                    status_message += f". Failed files: {', '.join(failed_files)}"
+            else:
+                status = "failure"
+                status_message = "No documents were successfully inserted"
+                if failed_files:
+                    status_message += f". Failed files: {', '.join(failed_files)}"
+
+            return InsertResponse(status=status, message=status_message)
+        except Exception as e:
+            logging.error(f"Error /documents/batch: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.delete(
+        "", response_model=InsertResponse, dependencies=[Depends(optional_api_key)]
+    )
+    async def clear_documents():
+        """
+        Clear all documents from the RAG system.
+
+        This endpoint deletes all text chunks, entities vector database, and relationships
+        vector database, effectively clearing all documents from the RAG system.
+
+        Returns:
+            InsertResponse: A response object containing the status and message.
+
+        Raises:
+            HTTPException: If an error occurs during the clearing process (500).
+        """
+        try:
+            rag.text_chunks = []
+            rag.entities_vdb = None
+            rag.relationships_vdb = None
+            return InsertResponse(
+                status="success", message="All documents cleared successfully"
+            )
+        except Exception as e:
+            logging.error(f"Error DELETE /documents: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.get("", dependencies=[Depends(optional_api_key)])
+    async def documents() -> DocsStatusesResponse:
+        """
+        Get the status of all documents in the system.
+
+        This endpoint retrieves the current status of all documents, grouped by their
+        processing status (PENDING, PROCESSING, PROCESSED, FAILED).
+
+        Returns:
+            DocsStatusesResponse: A response object containing a dictionary where keys are
+                                DocStatus values and values are lists of DocStatusResponse
+                                objects representing documents in each status category.
+
+        Raises:
+            HTTPException: If an error occurs while retrieving document statuses (500).
+        """
+        try:
+            statuses = (
+                DocStatus.PENDING,
+                DocStatus.PROCESSING,
+                DocStatus.PROCESSED,
+                DocStatus.FAILED,
+            )
+
+            tasks = [rag.get_docs_by_status(status) for status in statuses]
+            results: List[Dict[str, DocProcessingStatus]] = await asyncio.gather(*tasks)
+
+            response = DocsStatusesResponse()
+
+            for idx, result in enumerate(results):
+                status = statuses[idx]
+                for doc_id, doc_status in result.items():
+                    if status not in response.statuses:
+                        response.statuses[status] = []
+                    response.statuses[status].append(
+                        DocStatusResponse(
+                            id=doc_id,
+                            content_summary=doc_status.content_summary,
+                            content_length=doc_status.content_length,
+                            status=doc_status.status,
+                            created_at=DocStatusResponse.format_datetime(
+                                doc_status.created_at
+                            ),
+                            updated_at=DocStatusResponse.format_datetime(
+                                doc_status.updated_at
+                            ),
+                            chunks_count=doc_status.chunks_count,
+                            error=doc_status.error,
+                            metadata=doc_status.metadata,
+                        )
+                    )
+            return response
+        except Exception as e:
+            logging.error(f"Error GET /documents: {str(e)}")
+            logging.error(traceback.format_exc())
+            raise HTTPException(status_code=500, detail=str(e))
+
+    return router

lightrag/api/routers/graph_routes.py

@@ -0,0 +1,27 @@
+"""
+This module contains all graph-related routes for the LightRAG API.
+"""
+
+from typing import Optional
+
+from fastapi import APIRouter, Depends
+
+from ..utils_api import get_api_key_dependency
+
+router = APIRouter(tags=["graph"])
+
+
+def create_graph_routes(rag, api_key: Optional[str] = None):
+    optional_api_key = get_api_key_dependency(api_key)
+
+    @router.get("/graph/label/list", dependencies=[Depends(optional_api_key)])
+    async def get_graph_labels():
+        """Get all graph labels"""
+        return await rag.get_graph_labels()
+
+    @router.get("/graphs", dependencies=[Depends(optional_api_key)])
+    async def get_knowledge_graph(label: str):
+        """Get knowledge graph for a specific label"""
+        return await rag.get_knowledge_graph(nodel_label=label, max_depth=100)
+
+    return router

lightrag/api/routers/ollama_api.py

@@ -5,31 +5,13 @@ import logging
 import time
 import json
 import re
-import os
 from enum import Enum
 from fastapi.responses import StreamingResponse
 import asyncio
 from ascii_colors import trace_exception
 from lightrag import LightRAG, QueryParam
 from lightrag.utils import encode_string_by_tiktoken
-from dotenv import load_dotenv
-
-
-# Load environment variables
-load_dotenv(override=True)
-
-
-class OllamaServerInfos:
-    # Constants for emulated Ollama model information
-    LIGHTRAG_NAME = "lightrag"
-    LIGHTRAG_TAG = os.getenv("OLLAMA_EMULATING_MODEL_TAG", "latest")
-    LIGHTRAG_MODEL = f"{LIGHTRAG_NAME}:{LIGHTRAG_TAG}"
-    LIGHTRAG_SIZE = 7365960935  # it's a dummy value
-    LIGHTRAG_CREATED_AT = "2024-01-15T00:00:00Z"
-    LIGHTRAG_DIGEST = "sha256:lightrag"
-
-
-ollama_server_infos = OllamaServerInfos()
+from ..utils_api import ollama_server_infos
 
 
 # query mode according to query prefix (bypass is not LightRAG quer mode)
@@ -144,7 +126,7 @@ class OllamaAPI:
         self.rag = rag
         self.ollama_server_infos = ollama_server_infos
         self.top_k = top_k
-        self.router = APIRouter()
+        self.router = APIRouter(tags=["ollama"])
         self.setup_routes()
 
     def setup_routes(self):

lightrag/api/routers/query_routes.py

@@ -0,0 +1,229 @@
+"""
+This module contains all query-related routes for the LightRAG API.
+"""
+
+import json
+import logging
+from typing import Any, Dict, List, Literal, Optional
+
+from fastapi import APIRouter, Depends, HTTPException
+from lightrag.base import QueryParam
+from ..utils_api import get_api_key_dependency
+from pydantic import BaseModel, Field, field_validator
+
+from ascii_colors import trace_exception
+
+router = APIRouter(tags=["query"])
+
+
+class QueryRequest(BaseModel):
+    query: str = Field(
+        min_length=1,
+        description="The query text",
+    )
+
+    mode: Literal["local", "global", "hybrid", "naive", "mix"] = Field(
+        default="hybrid",
+        description="Query mode",
+    )
+
+    only_need_context: Optional[bool] = Field(
+        default=None,
+        description="If True, only returns the retrieved context without generating a response.",
+    )
+
+    only_need_prompt: Optional[bool] = Field(
+        default=None,
+        description="If True, only returns the generated prompt without producing a response.",
+    )
+
+    response_type: Optional[str] = Field(
+        min_length=1,
+        default=None,
+        description="Defines the response format. Examples: 'Multiple Paragraphs', 'Single Paragraph', 'Bullet Points'.",
+    )
+
+    top_k: Optional[int] = Field(
+        ge=1,
+        default=None,
+        description="Number of top items to retrieve. Represents entities in 'local' mode and relationships in 'global' mode.",
+    )
+
+    max_token_for_text_unit: Optional[int] = Field(
+        gt=1,
+        default=None,
+        description="Maximum number of tokens allowed for each retrieved text chunk.",
+    )
+
+    max_token_for_global_context: Optional[int] = Field(
+        gt=1,
+        default=None,
+        description="Maximum number of tokens allocated for relationship descriptions in global retrieval.",
+    )
+
+    max_token_for_local_context: Optional[int] = Field(
+        gt=1,
+        default=None,
+        description="Maximum number of tokens allocated for entity descriptions in local retrieval.",
+    )
+
+    hl_keywords: Optional[List[str]] = Field(
+        default=None,
+        description="List of high-level keywords to prioritize in retrieval.",
+    )
+
+    ll_keywords: Optional[List[str]] = Field(
+        default=None,
+        description="List of low-level keywords to refine retrieval focus.",
+    )
+
+    conversation_history: Optional[List[Dict[str, Any]]] = Field(
+        default=None,
+        description="Stores past conversation history to maintain context. Format: [{'role': 'user/assistant', 'content': 'message'}].",
+    )
+
+    history_turns: Optional[int] = Field(
+        ge=0,
+        default=None,
+        description="Number of complete conversation turns (user-assistant pairs) to consider in the response context.",
+    )
+
+    @field_validator("query", mode="after")
+    @classmethod
+    def query_strip_after(cls, query: str) -> str:
+        return query.strip()
+
+    @field_validator("hl_keywords", mode="after")
+    @classmethod
+    def hl_keywords_strip_after(cls, hl_keywords: List[str] | None) -> List[str] | None:
+        if hl_keywords is None:
+            return None
+        return [keyword.strip() for keyword in hl_keywords]
+
+    @field_validator("ll_keywords", mode="after")
+    @classmethod
+    def ll_keywords_strip_after(cls, ll_keywords: List[str] | None) -> List[str] | None:
+        if ll_keywords is None:
+            return None
+        return [keyword.strip() for keyword in ll_keywords]
+
+    @field_validator("conversation_history", mode="after")
+    @classmethod
+    def conversation_history_role_check(
+        cls, conversation_history: List[Dict[str, Any]] | None
+    ) -> List[Dict[str, Any]] | None:
+        if conversation_history is None:
+            return None
+        for msg in conversation_history:
+            if "role" not in msg or msg["role"] not in {"user", "assistant"}:
+                raise ValueError(
+                    "Each message must have a 'role' key with value 'user' or 'assistant'."
+                )
+        return conversation_history
+
+    def to_query_params(self, is_stream: bool) -> "QueryParam":
+        """Converts a QueryRequest instance into a QueryParam instance."""
+        # Use Pydantic's `.model_dump(exclude_none=True)` to remove None values automatically
+        request_data = self.model_dump(exclude_none=True, exclude={"query"})
+
+        # Ensure `mode` and `stream` are set explicitly
+        param = QueryParam(**request_data)
+        param.stream = is_stream
+        return param
+
+
+class QueryResponse(BaseModel):
+    response: str = Field(
+        description="The generated response",
+    )
+
+
+def create_query_routes(rag, api_key: Optional[str] = None, top_k: int = 60):
+    optional_api_key = get_api_key_dependency(api_key)
+
+    @router.post(
+        "/query", response_model=QueryResponse, dependencies=[Depends(optional_api_key)]
+    )
+    async def query_text(request: QueryRequest):
+        """
+        Handle a POST request at the /query endpoint to process user queries using RAG capabilities.
+
+        Parameters:
+            request (QueryRequest): The request object containing the query parameters.
+        Returns:
+            QueryResponse: A Pydantic model containing the result of the query processing.
+                       If a string is returned (e.g., cache hit), it's directly returned.
+                       Otherwise, an async generator may be used to build the response.
+
+        Raises:
+            HTTPException: Raised when an error occurs during the request handling process,
+                       with status code 500 and detail containing the exception message.
+        """
+        try:
+            param = request.to_query_params(False)
+            if param.top_k is None:
+                param.top_k = top_k
+            response = await rag.aquery(request.query, param=param)
+
+            # If response is a string (e.g. cache hit), return directly
+            if isinstance(response, str):
+                return QueryResponse(response=response)
+
+            if isinstance(response, dict):
+                result = json.dumps(response, indent=2)
+                return QueryResponse(response=result)
+            else:
+                return QueryResponse(response=str(response))
+        except Exception as e:
+            trace_exception(e)
+            raise HTTPException(status_code=500, detail=str(e))
+
+    @router.post("/query/stream", dependencies=[Depends(optional_api_key)])
+    async def query_text_stream(request: QueryRequest):
+        """
+        This endpoint performs a retrieval-augmented generation (RAG) query and streams the response.
+
+        Args:
+            request (QueryRequest): The request object containing the query parameters.
+            optional_api_key (Optional[str], optional): An optional API key for authentication. Defaults to None.
+
+        Returns:
+            StreamingResponse: A streaming response containing the RAG query results.
+        """
+        try:
+            param = request.to_query_params(True)
+            if param.top_k is None:
+                param.top_k = top_k
+            response = await rag.aquery(request.query, param=param)
+
+            from fastapi.responses import StreamingResponse
+
+            async def stream_generator():
+                if isinstance(response, str):
+                    # If it's a string, send it all at once
+                    yield f"{json.dumps({'response': response})}\n"
+                else:
+                    # If it's an async generator, send chunks one by one
+                    try:
+                        async for chunk in response:
+                            if chunk:  # Only send non-empty content
+                                yield f"{json.dumps({'response': chunk})}\n"
+                    except Exception as e:
+                        logging.error(f"Streaming error: {str(e)}")
+                        yield f"{json.dumps({'error': str(e)})}\n"
+
+            return StreamingResponse(
+                stream_generator(),
+                media_type="application/x-ndjson",
+                headers={
+                    "Cache-Control": "no-cache",
+                    "Connection": "keep-alive",
+                    "Content-Type": "application/x-ndjson",
+                    "X-Accel-Buffering": "no",  # Ensure proper handling of streaming response when proxied by Nginx
+                },
+            )
+        except Exception as e:
+            trace_exception(e)
+            raise HTTPException(status_code=500, detail=str(e))
+
+    return router

lightrag/api/utils_api.py

@@ -0,0 +1,554 @@
+"""
+Utility functions for the LightRAG API.
+"""
+
+import os
+import argparse
+from typing import Optional
+import sys
+from ascii_colors import ASCIIColors
+from lightrag.api import __api_version__
+from fastapi import HTTPException, Security
+from dotenv import load_dotenv
+from fastapi.security import APIKeyHeader
+from starlette.status import HTTP_403_FORBIDDEN
+
+# Load environment variables
+load_dotenv(override=True)
+
+
+class OllamaServerInfos:
+    # Constants for emulated Ollama model information
+    LIGHTRAG_NAME = "lightrag"
+    LIGHTRAG_TAG = os.getenv("OLLAMA_EMULATING_MODEL_TAG", "latest")
+    LIGHTRAG_MODEL = f"{LIGHTRAG_NAME}:{LIGHTRAG_TAG}"
+    LIGHTRAG_SIZE = 7365960935  # it's a dummy value
+    LIGHTRAG_CREATED_AT = "2024-01-15T00:00:00Z"
+    LIGHTRAG_DIGEST = "sha256:lightrag"
+
+
+ollama_server_infos = OllamaServerInfos()
+
+
+def get_api_key_dependency(api_key: Optional[str]):
+    """
+    Create an API key dependency for route protection.
+
+    Args:
+        api_key (Optional[str]): The API key to validate against.
+                                If None, no authentication is required.
+
+    Returns:
+        Callable: A dependency function that validates the API key.
+    """
+    if not api_key:
+        # If no API key is configured, return a dummy dependency that always succeeds
+        async def no_auth():
+            return None
+
+        return no_auth
+
+    # If API key is configured, use proper authentication
+    api_key_header = APIKeyHeader(name="X-API-Key", auto_error=False)
+
+    async def api_key_auth(
+        api_key_header_value: Optional[str] = Security(api_key_header),
+    ):
+        if not api_key_header_value:
+            raise HTTPException(
+                status_code=HTTP_403_FORBIDDEN, detail="API Key required"
+            )
+        if api_key_header_value != api_key:
+            raise HTTPException(
+                status_code=HTTP_403_FORBIDDEN, detail="Invalid API Key"
+            )
+        return api_key_header_value
+
+    return api_key_auth
+
+
+class DefaultRAGStorageConfig:
+    KV_STORAGE = "JsonKVStorage"
+    VECTOR_STORAGE = "NanoVectorDBStorage"
+    GRAPH_STORAGE = "NetworkXStorage"
+    DOC_STATUS_STORAGE = "JsonDocStatusStorage"
+
+
+def get_default_host(binding_type: str) -> str:
+    default_hosts = {
+        "ollama": os.getenv("LLM_BINDING_HOST", "http://localhost:11434"),
+        "lollms": os.getenv("LLM_BINDING_HOST", "http://localhost:9600"),
+        "azure_openai": os.getenv("AZURE_OPENAI_ENDPOINT", "https://api.openai.com/v1"),
+        "openai": os.getenv("LLM_BINDING_HOST", "https://api.openai.com/v1"),
+    }
+    return default_hosts.get(
+        binding_type, os.getenv("LLM_BINDING_HOST", "http://localhost:11434")
+    )  # fallback to ollama if unknown
+
+
+def get_env_value(env_key: str, default: any, value_type: type = str) -> any:
+    """
+    Get value from environment variable with type conversion
+
+    Args:
+        env_key (str): Environment variable key
+        default (any): Default value if env variable is not set
+        value_type (type): Type to convert the value to
+
+    Returns:
+        any: Converted value from environment or default
+    """
+    value = os.getenv(env_key)
+    if value is None:
+        return default
+
+    if value_type is bool:
+        return value.lower() in ("true", "1", "yes", "t", "on")
+    try:
+        return value_type(value)
+    except ValueError:
+        return default
+
+
+def parse_args() -> argparse.Namespace:
+    """
+    Parse command line arguments with environment variable fallback
+
+    Returns:
+        argparse.Namespace: Parsed arguments
+    """
+
+    parser = argparse.ArgumentParser(
+        description="LightRAG FastAPI Server with separate working and input directories"
+    )
+
+    parser.add_argument(
+        "--kv-storage",
+        default=get_env_value(
+            "LIGHTRAG_KV_STORAGE", DefaultRAGStorageConfig.KV_STORAGE
+        ),
+        help=f"KV storage implementation (default: {DefaultRAGStorageConfig.KV_STORAGE})",
+    )
+    parser.add_argument(
+        "--doc-status-storage",
+        default=get_env_value(
+            "LIGHTRAG_DOC_STATUS_STORAGE", DefaultRAGStorageConfig.DOC_STATUS_STORAGE
+        ),
+        help=f"Document status storage implementation (default: {DefaultRAGStorageConfig.DOC_STATUS_STORAGE})",
+    )
+    parser.add_argument(
+        "--graph-storage",
+        default=get_env_value(
+            "LIGHTRAG_GRAPH_STORAGE", DefaultRAGStorageConfig.GRAPH_STORAGE
+        ),
+        help=f"Graph storage implementation (default: {DefaultRAGStorageConfig.GRAPH_STORAGE})",
+    )
+    parser.add_argument(
+        "--vector-storage",
+        default=get_env_value(
+            "LIGHTRAG_VECTOR_STORAGE", DefaultRAGStorageConfig.VECTOR_STORAGE
+        ),
+        help=f"Vector storage implementation (default: {DefaultRAGStorageConfig.VECTOR_STORAGE})",
+    )
+
+    # Bindings configuration
+    parser.add_argument(
+        "--llm-binding",
+        default=get_env_value("LLM_BINDING", "ollama"),
+        help="LLM binding to be used. Supported: lollms, ollama, openai (default: from env or ollama)",
+    )
+    parser.add_argument(
+        "--embedding-binding",
+        default=get_env_value("EMBEDDING_BINDING", "ollama"),
+        help="Embedding binding to be used. Supported: lollms, ollama, openai (default: from env or ollama)",
+    )
+
+    # Server configuration
+    parser.add_argument(
+        "--host",
+        default=get_env_value("HOST", "0.0.0.0"),
+        help="Server host (default: from env or 0.0.0.0)",
+    )
+    parser.add_argument(
+        "--port",
+        type=int,
+        default=get_env_value("PORT", 9621, int),
+        help="Server port (default: from env or 9621)",
+    )
+
+    # Directory configuration
+    parser.add_argument(
+        "--working-dir",
+        default=get_env_value("WORKING_DIR", "./rag_storage"),
+        help="Working directory for RAG storage (default: from env or ./rag_storage)",
+    )
+    parser.add_argument(
+        "--input-dir",
+        default=get_env_value("INPUT_DIR", "./inputs"),
+        help="Directory containing input documents (default: from env or ./inputs)",
+    )
+
+    # LLM Model configuration
+    parser.add_argument(
+        "--llm-binding-host",
+        default=get_env_value("LLM_BINDING_HOST", None),
+        help="LLM server host URL. If not provided, defaults based on llm-binding:\n"
+        + "- ollama: http://localhost:11434\n"
+        + "- lollms: http://localhost:9600\n"
+        + "- openai: https://api.openai.com/v1",
+    )
+
+    default_llm_api_key = get_env_value("LLM_BINDING_API_KEY", None)
+
+    parser.add_argument(
+        "--llm-binding-api-key",
+        default=default_llm_api_key,
+        help="llm server API key (default: from env or empty string)",
+    )
+
+    parser.add_argument(
+        "--llm-model",
+        default=get_env_value("LLM_MODEL", "mistral-nemo:latest"),
+        help="LLM model name (default: from env or mistral-nemo:latest)",
+    )
+
+    # Embedding model configuration
+    parser.add_argument(
+        "--embedding-binding-host",
+        default=get_env_value("EMBEDDING_BINDING_HOST", None),
+        help="Embedding server host URL. If not provided, defaults based on embedding-binding:\n"
+        + "- ollama: http://localhost:11434\n"
+        + "- lollms: http://localhost:9600\n"
+        + "- openai: https://api.openai.com/v1",
+    )
+
+    default_embedding_api_key = get_env_value("EMBEDDING_BINDING_API_KEY", "")
+    parser.add_argument(
+        "--embedding-binding-api-key",
+        default=default_embedding_api_key,
+        help="embedding server API key (default: from env or empty string)",
+    )
+
+    parser.add_argument(
+        "--embedding-model",
+        default=get_env_value("EMBEDDING_MODEL", "bge-m3:latest"),
+        help="Embedding model name (default: from env or bge-m3:latest)",
+    )
+
+    parser.add_argument(
+        "--chunk_size",
+        default=get_env_value("CHUNK_SIZE", 1200),
+        help="chunk chunk size default 1200",
+    )
+
+    parser.add_argument(
+        "--chunk_overlap_size",
+        default=get_env_value("CHUNK_OVERLAP_SIZE", 100),
+        help="chunk overlap size default 100",
+    )
+
+    def timeout_type(value):
+        if value is None or value == "None":
+            return None
+        return int(value)
+
+    parser.add_argument(
+        "--timeout",
+        default=get_env_value("TIMEOUT", None, timeout_type),
+        type=timeout_type,
+        help="Timeout in seconds (useful when using slow AI). Use None for infinite timeout",
+    )
+
+    # RAG configuration
+    parser.add_argument(
+        "--max-async",
+        type=int,
+        default=get_env_value("MAX_ASYNC", 4, int),
+        help="Maximum async operations (default: from env or 4)",
+    )
+    parser.add_argument(
+        "--max-tokens",
+        type=int,
+        default=get_env_value("MAX_TOKENS", 32768, int),
+        help="Maximum token size (default: from env or 32768)",
+    )
+    parser.add_argument(
+        "--embedding-dim",
+        type=int,
+        default=get_env_value("EMBEDDING_DIM", 1024, int),
+        help="Embedding dimensions (default: from env or 1024)",
+    )
+    parser.add_argument(
+        "--max-embed-tokens",
+        type=int,
+        default=get_env_value("MAX_EMBED_TOKENS", 8192, int),
+        help="Maximum embedding token size (default: from env or 8192)",
+    )
+
+    # Logging configuration
+    parser.add_argument(
+        "--log-level",
+        default=get_env_value("LOG_LEVEL", "INFO"),
+        choices=["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"],
+        help="Logging level (default: from env or INFO)",
+    )
+
+    parser.add_argument(
+        "--key",
+        type=str,
+        default=get_env_value("LIGHTRAG_API_KEY", None),
+        help="API key for authentication. This protects lightrag server against unauthorized access",
+    )
+
+    # Optional https parameters
+    parser.add_argument(
+        "--ssl",
+        action="store_true",
+        default=get_env_value("SSL", False, bool),
+        help="Enable HTTPS (default: from env or False)",
+    )
+    parser.add_argument(
+        "--ssl-certfile",
+        default=get_env_value("SSL_CERTFILE", None),
+        help="Path to SSL certificate file (required if --ssl is enabled)",
+    )
+    parser.add_argument(
+        "--ssl-keyfile",
+        default=get_env_value("SSL_KEYFILE", None),
+        help="Path to SSL private key file (required if --ssl is enabled)",
+    )
+    parser.add_argument(
+        "--auto-scan-at-startup",
+        action="store_true",
+        default=False,
+        help="Enable automatic scanning when the program starts",
+    )
+
+    parser.add_argument(
+        "--history-turns",
+        type=int,
+        default=get_env_value("HISTORY_TURNS", 3, int),
+        help="Number of conversation history turns to include (default: from env or 3)",
+    )
+
+    # Search parameters
+    parser.add_argument(
+        "--top-k",
+        type=int,
+        default=get_env_value("TOP_K", 60, int),
+        help="Number of most similar results to return (default: from env or 60)",
+    )
+    parser.add_argument(
+        "--cosine-threshold",
+        type=float,
+        default=get_env_value("COSINE_THRESHOLD", 0.2, float),
+        help="Cosine similarity threshold (default: from env or 0.4)",
+    )
+
+    # Ollama model name
+    parser.add_argument(
+        "--simulated-model-name",
+        type=str,
+        default=get_env_value(
+            "SIMULATED_MODEL_NAME", ollama_server_infos.LIGHTRAG_MODEL
+        ),
+        help="Number of conversation history turns to include (default: from env or 3)",
+    )
+
+    # Namespace
+    parser.add_argument(
+        "--namespace-prefix",
+        type=str,
+        default=get_env_value("NAMESPACE_PREFIX", ""),
+        help="Prefix of the namespace",
+    )
+
+    parser.add_argument(
+        "--verbose",
+        type=bool,
+        default=get_env_value("VERBOSE", False, bool),
+        help="Verbose debug output(default: from env or false)",
+    )
+
+    args = parser.parse_args()
+
+    # convert relative path to absolute path
+    args.working_dir = os.path.abspath(args.working_dir)
+    args.input_dir = os.path.abspath(args.input_dir)
+
+    ollama_server_infos.LIGHTRAG_MODEL = args.simulated_model_name
+
+    return args
+
+
+def display_splash_screen(args: argparse.Namespace) -> None:
+    """
+    Display a colorful splash screen showing LightRAG server configuration
+
+    Args:
+        args: Parsed command line arguments
+    """
+    # Banner
+    ASCIIColors.cyan(f"""
+    ╔══════════════════════════════════════════════════════════════╗
+    ║                   🚀 LightRAG Server v{__api_version__}                  ║
+    ║          Fast, Lightweight RAG Server Implementation         ║
+    ╚══════════════════════════════════════════════════════════════╝
+    """)
+
+    # Server Configuration
+    ASCIIColors.magenta("\n📡 Server Configuration:")
+    ASCIIColors.white("    ├─ Host: ", end="")
+    ASCIIColors.yellow(f"{args.host}")
+    ASCIIColors.white("    ├─ Port: ", end="")
+    ASCIIColors.yellow(f"{args.port}")
+    ASCIIColors.white("    ├─ CORS Origins: ", end="")
+    ASCIIColors.yellow(f"{os.getenv('CORS_ORIGINS', '*')}")
+    ASCIIColors.white("    ├─ SSL Enabled: ", end="")
+    ASCIIColors.yellow(f"{args.ssl}")
+    ASCIIColors.white("    └─ API Key: ", end="")
+    ASCIIColors.yellow("Set" if args.key else "Not Set")
+    if args.ssl:
+        ASCIIColors.white("    ├─ SSL Cert: ", end="")
+        ASCIIColors.yellow(f"{args.ssl_certfile}")
+        ASCIIColors.white("    └─ SSL Key: ", end="")
+        ASCIIColors.yellow(f"{args.ssl_keyfile}")
+
+    # Directory Configuration
+    ASCIIColors.magenta("\n📂 Directory Configuration:")
+    ASCIIColors.white("    ├─ Working Directory: ", end="")
+    ASCIIColors.yellow(f"{args.working_dir}")
+    ASCIIColors.white("    └─ Input Directory: ", end="")
+    ASCIIColors.yellow(f"{args.input_dir}")
+
+    # LLM Configuration
+    ASCIIColors.magenta("\n🤖 LLM Configuration:")
+    ASCIIColors.white("    ├─ Binding: ", end="")
+    ASCIIColors.yellow(f"{args.llm_binding}")
+    ASCIIColors.white("    ├─ Host: ", end="")
+    ASCIIColors.yellow(f"{args.llm_binding_host}")
+    ASCIIColors.white("    └─ Model: ", end="")
+    ASCIIColors.yellow(f"{args.llm_model}")
+
+    # Embedding Configuration
+    ASCIIColors.magenta("\n📊 Embedding Configuration:")
+    ASCIIColors.white("    ├─ Binding: ", end="")
+    ASCIIColors.yellow(f"{args.embedding_binding}")
+    ASCIIColors.white("    ├─ Host: ", end="")
+    ASCIIColors.yellow(f"{args.embedding_binding_host}")
+    ASCIIColors.white("    ├─ Model: ", end="")
+    ASCIIColors.yellow(f"{args.embedding_model}")
+    ASCIIColors.white("    └─ Dimensions: ", end="")
+    ASCIIColors.yellow(f"{args.embedding_dim}")
+
+    # RAG Configuration
+    ASCIIColors.magenta("\n⚙️ RAG Configuration:")
+    ASCIIColors.white("    ├─ Max Async Operations: ", end="")
+    ASCIIColors.yellow(f"{args.max_async}")
+    ASCIIColors.white("    ├─ Max Tokens: ", end="")
+    ASCIIColors.yellow(f"{args.max_tokens}")
+    ASCIIColors.white("    ├─ Max Embed Tokens: ", end="")
+    ASCIIColors.yellow(f"{args.max_embed_tokens}")
+    ASCIIColors.white("    ├─ Chunk Size: ", end="")
+    ASCIIColors.yellow(f"{args.chunk_size}")
+    ASCIIColors.white("    ├─ Chunk Overlap Size: ", end="")
+    ASCIIColors.yellow(f"{args.chunk_overlap_size}")
+    ASCIIColors.white("    ├─ History Turns: ", end="")
+    ASCIIColors.yellow(f"{args.history_turns}")
+    ASCIIColors.white("    ├─ Cosine Threshold: ", end="")
+    ASCIIColors.yellow(f"{args.cosine_threshold}")
+    ASCIIColors.white("    └─ Top-K: ", end="")
+    ASCIIColors.yellow(f"{args.top_k}")
+
+    # System Configuration
+    ASCIIColors.magenta("\n💾 Storage Configuration:")
+    ASCIIColors.white("    ├─ KV Storage: ", end="")
+    ASCIIColors.yellow(f"{args.kv_storage}")
+    ASCIIColors.white("    ├─ Vector Storage: ", end="")
+    ASCIIColors.yellow(f"{args.vector_storage}")
+    ASCIIColors.white("    ├─ Graph Storage: ", end="")
+    ASCIIColors.yellow(f"{args.graph_storage}")
+    ASCIIColors.white("    └─ Document Status Storage: ", end="")
+    ASCIIColors.yellow(f"{args.doc_status_storage}")
+
+    ASCIIColors.magenta("\n🛠️ System Configuration:")
+    ASCIIColors.white("    ├─ Ollama Emulating Model: ", end="")
+    ASCIIColors.yellow(f"{ollama_server_infos.LIGHTRAG_MODEL}")
+    ASCIIColors.white("    ├─ Log Level: ", end="")
+    ASCIIColors.yellow(f"{args.log_level}")
+    ASCIIColors.white("    ├─ Verbose Debug: ", end="")
+    ASCIIColors.yellow(f"{args.verbose}")
+    ASCIIColors.white("    └─ Timeout: ", end="")
+    ASCIIColors.yellow(f"{args.timeout if args.timeout else 'None (infinite)'}")
+
+    # Server Status
+    ASCIIColors.green("\n✨ Server starting up...\n")
+
+    # Server Access Information
+    protocol = "https" if args.ssl else "http"
+    if args.host == "0.0.0.0":
+        ASCIIColors.magenta("\n🌐 Server Access Information:")
+        ASCIIColors.white("    ├─ Local Access: ", end="")
+        ASCIIColors.yellow(f"{protocol}://localhost:{args.port}")
+        ASCIIColors.white("    ├─ Remote Access: ", end="")
+        ASCIIColors.yellow(f"{protocol}://<your-ip-address>:{args.port}")
+        ASCIIColors.white("    ├─ API Documentation (local): ", end="")
+        ASCIIColors.yellow(f"{protocol}://localhost:{args.port}/docs")
+        ASCIIColors.white("    ├─ Alternative Documentation (local): ", end="")
+        ASCIIColors.yellow(f"{protocol}://localhost:{args.port}/redoc")
+        ASCIIColors.white("    └─ WebUI (local): ", end="")
+        ASCIIColors.yellow(f"{protocol}://localhost:{args.port}/webui")
+
+        ASCIIColors.yellow("\n📝 Note:")
+        ASCIIColors.white("""    Since the server is running on 0.0.0.0:
+    - Use 'localhost' or '127.0.0.1' for local access
+    - Use your machine's IP address for remote access
+    - To find your IP address:
+      • Windows: Run 'ipconfig' in terminal
+      • Linux/Mac: Run 'ifconfig' or 'ip addr' in terminal
+    """)
+    else:
+        base_url = f"{protocol}://{args.host}:{args.port}"
+        ASCIIColors.magenta("\n🌐 Server Access Information:")
+        ASCIIColors.white("    ├─ Base URL: ", end="")
+        ASCIIColors.yellow(f"{base_url}")
+        ASCIIColors.white("    ├─ API Documentation: ", end="")
+        ASCIIColors.yellow(f"{base_url}/docs")
+        ASCIIColors.white("    └─ Alternative Documentation: ", end="")
+        ASCIIColors.yellow(f"{base_url}/redoc")
+
+    # Usage Examples
+    ASCIIColors.magenta("\n📚 Quick Start Guide:")
+    ASCIIColors.cyan("""
+    1. Access the Swagger UI:
+       Open your browser and navigate to the API documentation URL above
+
+    2. API Authentication:""")
+    if args.key:
+        ASCIIColors.cyan("""       Add the following header to your requests:
+       X-API-Key: <your-api-key>
+    """)
+    else:
+        ASCIIColors.cyan("       No authentication required\n")
+
+    ASCIIColors.cyan("""    3. Basic Operations:
+       - POST /upload_document: Upload new documents to RAG
+       - POST /query: Query your document collection
+       - GET /collections: List available collections
+
+    4. Monitor the server:
+       - Check server logs for detailed operation information
+       - Use healthcheck endpoint: GET /health
+    """)
+
+    # Security Notice
+    if args.key:
+        ASCIIColors.yellow("\n⚠️  Security Notice:")
+        ASCIIColors.white("""    API Key authentication is enabled.
+    Make sure to include the X-API-Key header in all your requests.
+    """)
+
+    ASCIIColors.green("Server is ready to accept connections! 🚀\n")
+
+    # Ensure splash output flush to system log
+    sys.stdout.flush()

lightrag/kg/json_doc_status_impl.py

@@ -48,11 +48,20 @@ class JsonDocStatusStorage(DocStatusStorage):
         self, status: DocStatus
     ) -> dict[str, DocProcessingStatus]:
         """Get all documents with a specific status"""
-        return {
-            k: DocProcessingStatus(**v)
-            for k, v in self._data.items()
-            if v["status"] == status.value
-        }
+        result = {}
+        for k, v in self._data.items():
+            if v["status"] == status.value:
+                try:
+                    # Make a copy of the data to avoid modifying the original
+                    data = v.copy()
+                    # If content is missing, use content_summary as content
+                    if "content" not in data and "content_summary" in data:
+                        data["content"] = data["content_summary"]
+                    result[k] = DocProcessingStatus(**data)
+                except KeyError as e:
+                    logger.error(f"Missing required field for document {k}: {e}")
+                    continue
+        return result
 
     async def index_done_callback(self) -> None:
         write_json(self._data, self._file_name)

lightrag/lightrag.py

@@ -263,9 +263,8 @@ class LightRAG:
     _storages_status: StoragesStatus = field(default=StoragesStatus.NOT_CREATED)
 
     def __post_init__(self):
-        logger.setLevel(self.log_level)
         os.makedirs(os.path.dirname(self.log_file_path), exist_ok=True)
-        set_logger(self.log_file_path)
+        set_logger(self.log_file_path, self.log_level)
         logger.info(f"Logger initialized for working directory: {self.working_dir}")
 
         if not os.path.exists(self.working_dir):

lightrag/utils.py

@@ -57,11 +57,17 @@ logger = logging.getLogger("lightrag")
 logging.getLogger("httpx").setLevel(logging.WARNING)
 
 
-def set_logger(log_file: str):
-    logger.setLevel(logging.DEBUG)
+def set_logger(log_file: str, level: int = logging.DEBUG):
+    """Set up file logging with the specified level.
+    
+    Args:
+        log_file: Path to the log file
+        level: Logging level (e.g. logging.DEBUG, logging.INFO)
+    """
+    logger.setLevel(level)
 
     file_handler = logging.FileHandler(log_file, encoding="utf-8")
-    file_handler.setLevel(logging.DEBUG)
+    file_handler.setLevel(level)
 
     formatter = logging.Formatter(
         "%(asctime)s - %(name)s - %(levelname)s - %(message)s"

requirements.txt

@@ -1,8 +1,6 @@
 aiohttp
 configparser
-
-# database packages
-networkx
+future
 
 # Basic modules
 numpy