mirror of
https://github.com/arc53/DocsGPT.git
synced 2025-11-29 16:43:16 +00:00
502 lines
21 KiB
Python
502 lines
21 KiB
Python
"""
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Google Drive loader for DocsGPT.
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Loads documents from Google Drive using Google Drive API.
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"""
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import io
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import logging
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import os
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from typing import List, Dict, Any, Optional
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from googleapiclient.http import MediaIoBaseDownload
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from googleapiclient.errors import HttpError
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from application.parser.remote.base import BaseRemote
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from application.parser.remote.google_auth import GoogleDriveAuth
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from application.parser.schema.base import Document
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class GoogleDriveLoader(BaseRemote):
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SUPPORTED_MIME_TYPES = {
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'application/pdf': '.pdf',
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'application/vnd.google-apps.document': '.docx',
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'application/vnd.google-apps.presentation': '.pptx',
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'application/vnd.google-apps.spreadsheet': '.xlsx',
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document': '.docx',
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'application/vnd.openxmlformats-officedocument.presentationml.presentation': '.pptx',
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'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': '.xlsx',
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'application/msword': '.doc',
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'application/vnd.ms-powerpoint': '.ppt',
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'application/vnd.ms-excel': '.xls',
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'text/plain': '.txt',
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'text/csv': '.csv',
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'text/html': '.html',
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'application/rtf': '.rtf',
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'image/jpeg': '.jpg',
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'image/jpg': '.jpg',
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'image/png': '.png',
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}
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EXPORT_FORMATS = {
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'application/vnd.google-apps.document': 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'application/vnd.google-apps.presentation': 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
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'application/vnd.google-apps.spreadsheet': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
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}
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def __init__(self, session_token: str):
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self.auth = GoogleDriveAuth()
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self.session_token = session_token
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token_info = self.auth.get_token_info_from_session(session_token)
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self.credentials = self.auth.create_credentials_from_token_info(token_info)
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try:
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self.service = self.auth.build_drive_service(self.credentials)
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except Exception as e:
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logging.warning(f"Could not build Google Drive service: {e}")
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self.service = None
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def _process_file(self, file_metadata: Dict[str, Any], load_content: bool = True) -> Optional[Document]:
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try:
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file_id = file_metadata.get('id')
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file_name = file_metadata.get('name', 'Unknown')
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mime_type = file_metadata.get('mimeType', 'application/octet-stream')
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if mime_type not in self.SUPPORTED_MIME_TYPES and not mime_type.startswith('application/vnd.google-apps.'):
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return None
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if mime_type not in self.SUPPORTED_MIME_TYPES and not mime_type.startswith('application/vnd.google-apps.'):
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logging.info(f"Skipping unsupported file type: {mime_type} for file {file_name}")
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return None
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# Google Drive provides timezone-aware ISO8601 dates
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doc_metadata = {
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'file_name': file_name,
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'mime_type': mime_type,
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'size': file_metadata.get('size', 'Unknown'),
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'created_time': file_metadata.get('createdTime'),
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'modified_time': file_metadata.get('modifiedTime'),
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'parents': file_metadata.get('parents', []),
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'source': 'google_drive'
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}
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if not load_content:
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return Document(
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text="",
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doc_id=file_id,
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extra_info=doc_metadata
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)
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content = self._download_file_content(file_id, mime_type)
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if content is None:
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logging.warning(f"Could not load content for file {file_name} ({file_id})")
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return None
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return Document(
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text=content,
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doc_id=file_id,
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extra_info=doc_metadata
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)
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except Exception as e:
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logging.error(f"Error processing file: {e}")
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return None
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def load_data(self, inputs: Dict[str, Any]) -> List[Document]:
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"""
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Load items from Google Drive according to simple browsing semantics.
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Behavior:
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- If file_ids are provided: return those files (optionally with content).
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- If folder_id is provided: return the immediate children (folders and files) of that folder.
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- If no folder_id: return the immediate children (folders and files) of Drive 'root'.
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Args:
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inputs: Dictionary containing configuration:
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- folder_id: Optional Google Drive folder ID whose direct children to list
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- file_ids: Optional list of specific file IDs to load
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- limit: Maximum number of items to return
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- list_only: If True, only return metadata without content
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- session_token: Optional session token to use for authentication (backward compatibility)
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Returns:
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List of Document objects (folders are returned as metadata-only documents)
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"""
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session_token = inputs.get('session_token')
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if session_token and session_token != self.session_token:
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logging.warning("Session token in inputs differs from loader's session token. Using loader's session token.")
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self.config = inputs
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try:
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documents: List[Document] = []
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folder_id = inputs.get('folder_id')
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file_ids = inputs.get('file_ids', [])
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limit = inputs.get('limit', 100)
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list_only = inputs.get('list_only', False)
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load_content = not list_only
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if file_ids:
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# Specific files requested: load them
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for file_id in file_ids:
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try:
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doc = self._load_file_by_id(file_id, load_content=load_content)
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if doc:
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documents.append(doc)
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elif hasattr(self, '_credential_refreshed') and self._credential_refreshed:
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self._credential_refreshed = False
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logging.info(f"Retrying load of file {file_id} after credential refresh")
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doc = self._load_file_by_id(file_id, load_content=load_content)
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if doc:
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documents.append(doc)
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except Exception as e:
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logging.error(f"Error loading file {file_id}: {e}")
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continue
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else:
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# Browsing mode: list immediate children of provided folder or root
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parent_id = folder_id if folder_id else 'root'
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documents = self._list_items_in_parent(parent_id, limit=limit, load_content=load_content)
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logging.info(f"Loaded {len(documents)} documents from Google Drive")
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return documents
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except Exception as e:
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logging.error(f"Error loading data from Google Drive: {e}", exc_info=True)
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raise
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def _load_file_by_id(self, file_id: str, load_content: bool = True) -> Optional[Document]:
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self._ensure_service()
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try:
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file_metadata = self.service.files().get(
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fileId=file_id,
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fields='id,name,mimeType,size,createdTime,modifiedTime,parents'
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).execute()
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return self._process_file(file_metadata, load_content=load_content)
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except HttpError as e:
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logging.error(f"HTTP error loading file {file_id}: {e.resp.status} - {e.content}")
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if e.resp.status in [401, 403]:
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if hasattr(self.credentials, 'refresh_token') and self.credentials.refresh_token:
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try:
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from google.auth.transport.requests import Request
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self.credentials.refresh(Request())
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self._ensure_service()
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return None
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except Exception as refresh_error:
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raise ValueError(f"Authentication failed and could not be refreshed: {refresh_error}")
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else:
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raise ValueError("Authentication failed and cannot be refreshed: missing refresh_token")
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return None
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except Exception as e:
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logging.error(f"Error loading file {file_id}: {e}")
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return None
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def _list_items_in_parent(self, parent_id: str, limit: int = 100, load_content: bool = False) -> List[Document]:
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self._ensure_service()
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documents: List[Document] = []
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try:
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query = f"'{parent_id}' in parents and trashed=false"
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page_token = None
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while True:
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page_size = 100
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if limit:
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remaining = max(0, limit - len(documents))
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if remaining == 0:
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break
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page_size = min(100, remaining)
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results = self.service.files().list(
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q=query,
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fields='nextPageToken,files(id,name,mimeType,size,createdTime,modifiedTime,parents)',
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pageToken=page_token,
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pageSize=page_size
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).execute()
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items = results.get('files', [])
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for item in items:
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mime_type = item.get('mimeType')
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if mime_type == 'application/vnd.google-apps.folder':
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doc_metadata = {
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'file_name': item.get('name', 'Unknown'),
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'mime_type': mime_type,
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'size': item.get('size', 'Unknown'),
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'created_time': item.get('createdTime'),
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'modified_time': item.get('modifiedTime'),
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'parents': item.get('parents', []),
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'source': 'google_drive',
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'is_folder': True
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}
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documents.append(Document(text="", doc_id=item.get('id'), extra_info=doc_metadata))
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else:
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doc = self._process_file(item, load_content=load_content)
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if doc:
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documents.append(doc)
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if limit and len(documents) >= limit:
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return documents
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page_token = results.get('nextPageToken')
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if not page_token:
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break
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return documents
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except Exception as e:
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logging.error(f"Error listing items under parent {parent_id}: {e}")
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return documents
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def _download_file_content(self, file_id: str, mime_type: str) -> Optional[str]:
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if not self.credentials.token:
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logging.warning("No access token in credentials, attempting to refresh")
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if hasattr(self.credentials, 'refresh_token') and self.credentials.refresh_token:
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try:
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from google.auth.transport.requests import Request
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self.credentials.refresh(Request())
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logging.info("Credentials refreshed successfully")
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self._ensure_service()
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except Exception as e:
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logging.error(f"Failed to refresh credentials: {e}")
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raise ValueError("Authentication failed and cannot be refreshed: missing or invalid refresh_token")
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else:
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logging.error("No access token and no refresh_token available")
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raise ValueError("Authentication failed and cannot be refreshed: missing refresh_token")
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if self.credentials.expired:
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logging.warning("Credentials are expired, attempting to refresh")
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if hasattr(self.credentials, 'refresh_token') and self.credentials.refresh_token:
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try:
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from google.auth.transport.requests import Request
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self.credentials.refresh(Request())
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logging.info("Credentials refreshed successfully")
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self._ensure_service()
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except Exception as e:
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logging.error(f"Failed to refresh expired credentials: {e}")
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raise ValueError("Authentication failed and cannot be refreshed: expired credentials")
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else:
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logging.error("Credentials expired and no refresh_token available")
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raise ValueError("Authentication failed and cannot be refreshed: missing refresh_token")
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try:
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if mime_type in self.EXPORT_FORMATS:
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export_mime_type = self.EXPORT_FORMATS[mime_type]
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request = self.service.files().export_media(
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fileId=file_id,
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mimeType=export_mime_type
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)
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else:
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request = self.service.files().get_media(fileId=file_id)
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file_io = io.BytesIO()
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downloader = MediaIoBaseDownload(file_io, request)
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done = False
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while done is False:
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try:
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_, done = downloader.next_chunk()
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except HttpError as e:
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logging.error(f"HTTP error downloading file {file_id}: {e.resp.status} - {e.content}")
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return None
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except Exception as e:
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logging.error(f"Error during download of file {file_id}: {e}")
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return None
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content_bytes = file_io.getvalue()
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try:
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content = content_bytes.decode('utf-8')
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except UnicodeDecodeError:
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try:
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content = content_bytes.decode('latin-1')
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except UnicodeDecodeError:
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logging.error(f"Could not decode file {file_id} as text")
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return None
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return content
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except HttpError as e:
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logging.error(f"HTTP error downloading file {file_id}: {e.resp.status} - {e.content}")
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if e.resp.status in [401, 403]:
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logging.error(f"Authentication error downloading file {file_id}")
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if hasattr(self.credentials, 'refresh_token') and self.credentials.refresh_token:
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logging.info(f"Attempting to refresh credentials for file {file_id}")
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try:
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from google.auth.transport.requests import Request
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self.credentials.refresh(Request())
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logging.info("Credentials refreshed successfully")
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self._credential_refreshed = True
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self._ensure_service()
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return None
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except Exception as refresh_error:
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logging.error(f"Error refreshing credentials: {refresh_error}")
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raise ValueError(f"Authentication failed and could not be refreshed: {refresh_error}")
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else:
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logging.error("Cannot refresh credentials: missing refresh_token")
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raise ValueError("Authentication failed and cannot be refreshed: missing refresh_token")
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return None
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except Exception as e:
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logging.error(f"Error downloading file {file_id}: {e}")
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return None
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def _download_file_to_directory(self, file_id: str, local_dir: str) -> bool:
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try:
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self._ensure_service()
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return self._download_single_file(file_id, local_dir)
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except Exception as e:
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logging.error(f"Error downloading file {file_id}: {e}", exc_info=True)
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return False
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def _ensure_service(self):
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if not self.service:
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try:
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self.service = self.auth.build_drive_service(self.credentials)
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except Exception as e:
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raise ValueError(f"Cannot access Google Drive: {e}")
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def _download_single_file(self, file_id: str, local_dir: str) -> bool:
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file_metadata = self.service.files().get(
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fileId=file_id,
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fields='name,mimeType'
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).execute()
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file_name = file_metadata['name']
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mime_type = file_metadata['mimeType']
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if mime_type not in self.SUPPORTED_MIME_TYPES and not mime_type.startswith('application/vnd.google-apps.'):
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return False
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os.makedirs(local_dir, exist_ok=True)
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full_path = os.path.join(local_dir, file_name)
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if mime_type in self.EXPORT_FORMATS:
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export_mime_type = self.EXPORT_FORMATS[mime_type]
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request = self.service.files().export_media(
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fileId=file_id,
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mimeType=export_mime_type
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)
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extension = self._get_extension_for_mime_type(export_mime_type)
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if not full_path.endswith(extension):
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full_path += extension
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else:
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request = self.service.files().get_media(fileId=file_id)
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with open(full_path, 'wb') as f:
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downloader = MediaIoBaseDownload(f, request)
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done = False
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while not done:
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_, done = downloader.next_chunk()
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return True
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def _download_folder_recursive(self, folder_id: str, local_dir: str, recursive: bool = True) -> int:
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files_downloaded = 0
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query = f"'{folder_id}' in parents and trashed=false"
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page_token = None
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while True:
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results = self.service.files().list(
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q=query,
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fields='nextPageToken,files(id,name,mimeType)',
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pageToken=page_token
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).execute()
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files = results.get('files', [])
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for file_metadata in files:
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if file_metadata['mimeType'] == 'application/vnd.google-apps.folder':
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if recursive:
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subfolder_path = os.path.join(local_dir, file_metadata['name'])
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os.makedirs(subfolder_path, exist_ok=True)
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files_downloaded += self._download_folder_recursive(
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file_metadata['id'],
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subfolder_path,
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recursive
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)
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else:
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if self._download_single_file(file_metadata['id'], local_dir):
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files_downloaded += 1
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page_token = results.get('nextPageToken')
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if not page_token:
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break
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return files_downloaded
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def _get_extension_for_mime_type(self, mime_type: str) -> str:
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extensions = {
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'application/pdf': '.pdf',
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'text/plain': '.txt',
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document': '.docx',
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'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': '.xlsx',
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'application/vnd.openxmlformats-officedocument.presentationml.presentation': '.pptx',
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'text/html': '.html',
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'text/markdown': '.md',
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}
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return extensions.get(mime_type, '.bin')
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def _download_folder_contents(self, folder_id: str, local_dir: str, recursive: bool = True) -> int:
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try:
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self._ensure_service()
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return self._download_folder_recursive(folder_id, local_dir, recursive)
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except Exception as e:
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logging.error(f"Error downloading folder {folder_id}: {e}", exc_info=True)
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return 0
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def download_to_directory(self, local_dir: str, source_config: dict = None) -> dict:
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if source_config is None:
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source_config = {}
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config = source_config if source_config else getattr(self, 'config', {})
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files_downloaded = 0
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try:
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folder_id = config.get('folder_id')
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file_ids = config.get('file_ids', [])
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recursive = config.get('recursive', True)
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if file_ids:
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if isinstance(file_ids, str):
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file_ids = [file_ids]
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for file_id in file_ids:
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if self._download_file_to_directory(file_id, local_dir):
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files_downloaded += 1
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elif folder_id:
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files_downloaded = self._download_folder_contents(folder_id, local_dir, recursive)
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else:
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raise ValueError("No folder_id or file_ids provided for download")
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return {
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"files_downloaded": files_downloaded,
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"directory_path": local_dir,
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"empty_result": files_downloaded == 0,
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"source_type": "google_drive",
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"config_used": config
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}
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except Exception as e:
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return {
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"files_downloaded": 0,
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"directory_path": local_dir,
|
|
"empty_result": True,
|
|
"error": str(e),
|
|
"source_type": "google_drive"
|
|
}
|