mirror of
https://github.com/hwchase17/langchain
synced 2024-11-18 09:25:54 +00:00
744 lines
27 KiB
Python
744 lines
27 KiB
Python
import logging
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from enum import Enum
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from io import BytesIO
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from typing import Any, Callable, Dict, List, Optional, Union
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import requests
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from langchain_core.documents import Document
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from tenacity import (
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before_sleep_log,
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retry,
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stop_after_attempt,
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wait_exponential,
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)
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from langchain_community.document_loaders.base import BaseLoader
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logger = logging.getLogger(__name__)
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class ContentFormat(str, Enum):
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"""Enumerator of the content formats of Confluence page."""
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EDITOR = "body.editor"
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EXPORT_VIEW = "body.export_view"
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ANONYMOUS_EXPORT_VIEW = "body.anonymous_export_view"
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STORAGE = "body.storage"
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VIEW = "body.view"
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def get_content(self, page: dict) -> str:
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return page["body"][self.name.lower()]["value"]
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class ConfluenceLoader(BaseLoader):
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"""Load `Confluence` pages.
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Port of https://llamahub.ai/l/confluence
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This currently supports username/api_key, Oauth2 login or personal access token
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authentication.
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Specify a list page_ids and/or space_key to load in the corresponding pages into
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Document objects, if both are specified the union of both sets will be returned.
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You can also specify a boolean `include_attachments` to include attachments, this
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is set to False by default, if set to True all attachments will be downloaded and
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ConfluenceReader will extract the text from the attachments and add it to the
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Document object. Currently supported attachment types are: PDF, PNG, JPEG/JPG,
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SVG, Word and Excel.
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Confluence API supports difference format of page content. The storage format is the
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raw XML representation for storage. The view format is the HTML representation for
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viewing with macros are rendered as though it is viewed by users. You can pass
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a enum `content_format` argument to `load()` to specify the content format, this is
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set to `ContentFormat.STORAGE` by default, the supported values are:
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`ContentFormat.EDITOR`, `ContentFormat.EXPORT_VIEW`,
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`ContentFormat.ANONYMOUS_EXPORT_VIEW`, `ContentFormat.STORAGE`,
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and `ContentFormat.VIEW`.
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Hint: space_key and page_id can both be found in the URL of a page in Confluence
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- https://yoursite.atlassian.com/wiki/spaces/<space_key>/pages/<page_id>
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Example:
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.. code-block:: python
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from langchain_community.document_loaders import ConfluenceLoader
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loader = ConfluenceLoader(
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url="https://yoursite.atlassian.com/wiki",
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username="me",
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api_key="12345"
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)
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documents = loader.load(space_key="SPACE",limit=50)
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# Server on perm
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loader = ConfluenceLoader(
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url="https://confluence.yoursite.com/",
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username="me",
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api_key="your_password",
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cloud=False
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)
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documents = loader.load(space_key="SPACE",limit=50)
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:param url: _description_
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:type url: str
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:param api_key: _description_, defaults to None
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:type api_key: str, optional
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:param username: _description_, defaults to None
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:type username: str, optional
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:param oauth2: _description_, defaults to {}
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:type oauth2: dict, optional
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:param token: _description_, defaults to None
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:type token: str, optional
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:param cloud: _description_, defaults to True
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:type cloud: bool, optional
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:param number_of_retries: How many times to retry, defaults to 3
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:type number_of_retries: Optional[int], optional
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:param min_retry_seconds: defaults to 2
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:type min_retry_seconds: Optional[int], optional
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:param max_retry_seconds: defaults to 10
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:type max_retry_seconds: Optional[int], optional
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:param confluence_kwargs: additional kwargs to initialize confluence with
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:type confluence_kwargs: dict, optional
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:raises ValueError: Errors while validating input
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:raises ImportError: Required dependencies not installed.
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"""
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def __init__(
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self,
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url: str,
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api_key: Optional[str] = None,
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username: Optional[str] = None,
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session: Optional[requests.Session] = None,
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oauth2: Optional[dict] = None,
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token: Optional[str] = None,
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cloud: Optional[bool] = True,
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number_of_retries: Optional[int] = 3,
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min_retry_seconds: Optional[int] = 2,
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max_retry_seconds: Optional[int] = 10,
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confluence_kwargs: Optional[dict] = None,
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):
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confluence_kwargs = confluence_kwargs or {}
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errors = ConfluenceLoader.validate_init_args(
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url=url,
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api_key=api_key,
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username=username,
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session=session,
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oauth2=oauth2,
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token=token,
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)
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if errors:
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raise ValueError(f"Error(s) while validating input: {errors}")
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try:
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from atlassian import Confluence # noqa: F401
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except ImportError:
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raise ImportError(
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"`atlassian` package not found, please run "
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"`pip install atlassian-python-api`"
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)
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self.base_url = url
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self.number_of_retries = number_of_retries
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self.min_retry_seconds = min_retry_seconds
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self.max_retry_seconds = max_retry_seconds
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if session:
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self.confluence = Confluence(url=url, session=session, **confluence_kwargs)
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elif oauth2:
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self.confluence = Confluence(
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url=url, oauth2=oauth2, cloud=cloud, **confluence_kwargs
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)
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elif token:
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self.confluence = Confluence(
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url=url, token=token, cloud=cloud, **confluence_kwargs
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)
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else:
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self.confluence = Confluence(
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url=url,
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username=username,
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password=api_key,
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cloud=cloud,
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**confluence_kwargs,
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)
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@staticmethod
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def validate_init_args(
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url: Optional[str] = None,
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api_key: Optional[str] = None,
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username: Optional[str] = None,
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session: Optional[requests.Session] = None,
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oauth2: Optional[dict] = None,
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token: Optional[str] = None,
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) -> Union[List, None]:
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"""Validates proper combinations of init arguments"""
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errors = []
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if url is None:
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errors.append("Must provide `base_url`")
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if (api_key and not username) or (username and not api_key):
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errors.append(
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"If one of `api_key` or `username` is provided, "
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"the other must be as well."
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)
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non_null_creds = list(
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x is not None for x in ((api_key or username), session, oauth2, token)
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)
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if sum(non_null_creds) > 1:
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all_names = ("(api_key, username)", "session", "oath2", "token")
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provided = tuple(n for x, n in zip(non_null_creds, all_names) if x)
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errors.append(
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f"Cannot provide a value for more than one of: {all_names}. Received "
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f"values for: {provided}"
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)
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if oauth2 and set(oauth2.keys()) != {
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"access_token",
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"access_token_secret",
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"consumer_key",
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"key_cert",
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}:
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errors.append(
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"You have either omitted require keys or added extra "
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"keys to the oauth2 dictionary. key values should be "
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"`['access_token', 'access_token_secret', 'consumer_key', 'key_cert']`"
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)
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return errors or None
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def load(
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self,
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space_key: Optional[str] = None,
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page_ids: Optional[List[str]] = None,
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label: Optional[str] = None,
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cql: Optional[str] = None,
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include_restricted_content: bool = False,
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include_archived_content: bool = False,
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include_attachments: bool = False,
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include_comments: bool = False,
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content_format: ContentFormat = ContentFormat.STORAGE,
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limit: Optional[int] = 50,
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max_pages: Optional[int] = 1000,
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ocr_languages: Optional[str] = None,
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keep_markdown_format: bool = False,
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keep_newlines: bool = False,
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) -> List[Document]:
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"""
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:param space_key: Space key retrieved from a confluence URL, defaults to None
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:type space_key: Optional[str], optional
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:param page_ids: List of specific page IDs to load, defaults to None
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:type page_ids: Optional[List[str]], optional
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:param label: Get all pages with this label, defaults to None
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:type label: Optional[str], optional
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:param cql: CQL Expression, defaults to None
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:type cql: Optional[str], optional
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:param include_restricted_content: defaults to False
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:type include_restricted_content: bool, optional
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:param include_archived_content: Whether to include archived content,
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defaults to False
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:type include_archived_content: bool, optional
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:param include_attachments: defaults to False
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:type include_attachments: bool, optional
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:param include_comments: defaults to False
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:type include_comments: bool, optional
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:param content_format: Specify content format, defaults to
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ContentFormat.STORAGE, the supported values are:
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`ContentFormat.EDITOR`, `ContentFormat.EXPORT_VIEW`,
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`ContentFormat.ANONYMOUS_EXPORT_VIEW`,
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`ContentFormat.STORAGE`, and `ContentFormat.VIEW`.
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:type content_format: ContentFormat
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:param limit: Maximum number of pages to retrieve per request, defaults to 50
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:type limit: int, optional
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:param max_pages: Maximum number of pages to retrieve in total, defaults 1000
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:type max_pages: int, optional
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:param ocr_languages: The languages to use for the Tesseract agent. To use a
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language, you'll first need to install the appropriate
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Tesseract language pack.
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:type ocr_languages: str, optional
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:param keep_markdown_format: Whether to keep the markdown format, defaults to
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False
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:type keep_markdown_format: bool
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:param keep_newlines: Whether to keep the newlines format, defaults to
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False
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:type keep_newlines: bool
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:raises ValueError: _description_
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:raises ImportError: _description_
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:return: _description_
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:rtype: List[Document]
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"""
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if not space_key and not page_ids and not label and not cql:
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raise ValueError(
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"Must specify at least one among `space_key`, `page_ids`, "
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"`label`, `cql` parameters."
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)
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docs = []
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if space_key:
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pages = self.paginate_request(
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self.confluence.get_all_pages_from_space,
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space=space_key,
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limit=limit,
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max_pages=max_pages,
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status="any" if include_archived_content else "current",
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expand=content_format.value,
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)
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docs += self.process_pages(
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pages,
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include_restricted_content,
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include_attachments,
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include_comments,
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content_format,
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ocr_languages=ocr_languages,
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keep_markdown_format=keep_markdown_format,
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keep_newlines=keep_newlines,
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)
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if label:
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pages = self.paginate_request(
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self.confluence.get_all_pages_by_label,
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label=label,
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limit=limit,
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max_pages=max_pages,
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)
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ids_by_label = [page["id"] for page in pages]
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if page_ids:
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page_ids = list(set(page_ids + ids_by_label))
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else:
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page_ids = list(set(ids_by_label))
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if cql:
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pages = self.paginate_request(
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self._search_content_by_cql,
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cql=cql,
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limit=limit,
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max_pages=max_pages,
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include_archived_spaces=include_archived_content,
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expand=content_format.value,
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)
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docs += self.process_pages(
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pages,
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include_restricted_content,
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include_attachments,
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include_comments,
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content_format,
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ocr_languages,
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keep_markdown_format,
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)
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if page_ids:
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for page_id in page_ids:
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get_page = retry(
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reraise=True,
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stop=stop_after_attempt(
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self.number_of_retries # type: ignore[arg-type]
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),
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wait=wait_exponential(
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multiplier=1, # type: ignore[arg-type]
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min=self.min_retry_seconds, # type: ignore[arg-type]
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max=self.max_retry_seconds, # type: ignore[arg-type]
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),
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before_sleep=before_sleep_log(logger, logging.WARNING),
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)(self.confluence.get_page_by_id)
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page = get_page(
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page_id=page_id, expand=f"{content_format.value},version"
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)
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if not include_restricted_content and not self.is_public_page(page):
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continue
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doc = self.process_page(
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page,
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include_attachments,
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include_comments,
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content_format,
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ocr_languages,
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keep_markdown_format,
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)
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docs.append(doc)
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return docs
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def _search_content_by_cql(
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self, cql: str, include_archived_spaces: Optional[bool] = None, **kwargs: Any
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) -> List[dict]:
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url = "rest/api/content/search"
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params: Dict[str, Any] = {"cql": cql}
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params.update(kwargs)
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if include_archived_spaces is not None:
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params["includeArchivedSpaces"] = include_archived_spaces
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response = self.confluence.get(url, params=params)
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return response.get("results", [])
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def paginate_request(self, retrieval_method: Callable, **kwargs: Any) -> List:
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"""Paginate the various methods to retrieve groups of pages.
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Unfortunately, due to page size, sometimes the Confluence API
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doesn't match the limit value. If `limit` is >100 confluence
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seems to cap the response to 100. Also, due to the Atlassian Python
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package, we don't get the "next" values from the "_links" key because
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they only return the value from the result key. So here, the pagination
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starts from 0 and goes until the max_pages, getting the `limit` number
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of pages with each request. We have to manually check if there
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are more docs based on the length of the returned list of pages, rather than
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just checking for the presence of a `next` key in the response like this page
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would have you do:
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https://developer.atlassian.com/server/confluence/pagination-in-the-rest-api/
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:param retrieval_method: Function used to retrieve docs
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:type retrieval_method: callable
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:return: List of documents
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:rtype: List
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"""
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max_pages = kwargs.pop("max_pages")
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docs: List[dict] = []
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while len(docs) < max_pages:
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get_pages = retry(
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reraise=True,
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stop=stop_after_attempt(
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self.number_of_retries # type: ignore[arg-type]
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),
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wait=wait_exponential(
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multiplier=1,
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min=self.min_retry_seconds, # type: ignore[arg-type]
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max=self.max_retry_seconds, # type: ignore[arg-type]
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),
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before_sleep=before_sleep_log(logger, logging.WARNING),
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)(retrieval_method)
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batch = get_pages(**kwargs, start=len(docs))
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if not batch:
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break
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docs.extend(batch)
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return docs[:max_pages]
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def is_public_page(self, page: dict) -> bool:
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"""Check if a page is publicly accessible."""
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restrictions = self.confluence.get_all_restrictions_for_content(page["id"])
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return (
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page["status"] == "current"
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and not restrictions["read"]["restrictions"]["user"]["results"]
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and not restrictions["read"]["restrictions"]["group"]["results"]
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)
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def process_pages(
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self,
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pages: List[dict],
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include_restricted_content: bool,
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include_attachments: bool,
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include_comments: bool,
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content_format: ContentFormat,
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ocr_languages: Optional[str] = None,
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keep_markdown_format: Optional[bool] = False,
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keep_newlines: bool = False,
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) -> List[Document]:
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"""Process a list of pages into a list of documents."""
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docs = []
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for page in pages:
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if not include_restricted_content and not self.is_public_page(page):
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continue
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doc = self.process_page(
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page,
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include_attachments,
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include_comments,
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content_format,
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ocr_languages=ocr_languages,
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keep_markdown_format=keep_markdown_format,
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keep_newlines=keep_newlines,
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)
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docs.append(doc)
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return docs
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def process_page(
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self,
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page: dict,
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include_attachments: bool,
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include_comments: bool,
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content_format: ContentFormat,
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ocr_languages: Optional[str] = None,
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keep_markdown_format: Optional[bool] = False,
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keep_newlines: bool = False,
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) -> Document:
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if keep_markdown_format:
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try:
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from markdownify import markdownify
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except ImportError:
|
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raise ImportError(
|
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"`markdownify` package not found, please run "
|
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"`pip install markdownify`"
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)
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if include_comments or not keep_markdown_format:
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try:
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from bs4 import BeautifulSoup # type: ignore
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except ImportError:
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raise ImportError(
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"`beautifulsoup4` package not found, please run "
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"`pip install beautifulsoup4`"
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)
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if include_attachments:
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attachment_texts = self.process_attachment(page["id"], ocr_languages)
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else:
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attachment_texts = []
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content = content_format.get_content(page)
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if keep_markdown_format:
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# Use markdownify to keep the page Markdown style
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text = markdownify(content, heading_style="ATX") + "".join(attachment_texts)
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else:
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if keep_newlines:
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text = BeautifulSoup(
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content.replace("</p>", "\n</p>").replace("<br />", "\n"), "lxml"
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).get_text(" ") + "".join(attachment_texts)
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else:
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text = BeautifulSoup(content, "lxml").get_text(
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" ", strip=True
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) + "".join(attachment_texts)
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if include_comments:
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comments = self.confluence.get_page_comments(
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page["id"], expand="body.view.value", depth="all"
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)["results"]
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comment_texts = [
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BeautifulSoup(comment["body"]["view"]["value"], "lxml").get_text(
|
|
" ", strip=True
|
|
)
|
|
for comment in comments
|
|
]
|
|
text = text + "".join(comment_texts)
|
|
|
|
metadata = {
|
|
"title": page["title"],
|
|
"id": page["id"],
|
|
"source": self.base_url.strip("/") + page["_links"]["webui"],
|
|
}
|
|
|
|
if "version" in page and "when" in page["version"]:
|
|
metadata["when"] = page["version"]["when"]
|
|
|
|
return Document(
|
|
page_content=text,
|
|
metadata=metadata,
|
|
)
|
|
|
|
def process_attachment(
|
|
self,
|
|
page_id: str,
|
|
ocr_languages: Optional[str] = None,
|
|
) -> List[str]:
|
|
try:
|
|
from PIL import Image # noqa: F401
|
|
except ImportError:
|
|
raise ImportError(
|
|
"`Pillow` package not found, " "please run `pip install Pillow`"
|
|
)
|
|
|
|
# depending on setup you may also need to set the correct path for
|
|
# poppler and tesseract
|
|
attachments = self.confluence.get_attachments_from_content(page_id)["results"]
|
|
texts = []
|
|
for attachment in attachments:
|
|
media_type = attachment["metadata"]["mediaType"]
|
|
absolute_url = self.base_url + attachment["_links"]["download"]
|
|
title = attachment["title"]
|
|
try:
|
|
if media_type == "application/pdf":
|
|
text = title + self.process_pdf(absolute_url, ocr_languages)
|
|
elif (
|
|
media_type == "image/png"
|
|
or media_type == "image/jpg"
|
|
or media_type == "image/jpeg"
|
|
):
|
|
text = title + self.process_image(absolute_url, ocr_languages)
|
|
elif (
|
|
media_type == "application/vnd.openxmlformats-officedocument"
|
|
".wordprocessingml.document"
|
|
):
|
|
text = title + self.process_doc(absolute_url)
|
|
elif media_type == "application/vnd.ms-excel":
|
|
text = title + self.process_xls(absolute_url)
|
|
elif media_type == "image/svg+xml":
|
|
text = title + self.process_svg(absolute_url, ocr_languages)
|
|
else:
|
|
continue
|
|
texts.append(text)
|
|
except requests.HTTPError as e:
|
|
if e.response.status_code == 404:
|
|
print(f"Attachment not found at {absolute_url}") # noqa: T201
|
|
continue
|
|
else:
|
|
raise
|
|
|
|
return texts
|
|
|
|
def process_pdf(
|
|
self,
|
|
link: str,
|
|
ocr_languages: Optional[str] = None,
|
|
) -> str:
|
|
try:
|
|
import pytesseract # noqa: F401
|
|
from pdf2image import convert_from_bytes # noqa: F401
|
|
except ImportError:
|
|
raise ImportError(
|
|
"`pytesseract` or `pdf2image` package not found, "
|
|
"please run `pip install pytesseract pdf2image`"
|
|
)
|
|
|
|
response = self.confluence.request(path=link, absolute=True)
|
|
text = ""
|
|
|
|
if (
|
|
response.status_code != 200
|
|
or response.content == b""
|
|
or response.content is None
|
|
):
|
|
return text
|
|
try:
|
|
images = convert_from_bytes(response.content)
|
|
except ValueError:
|
|
return text
|
|
|
|
for i, image in enumerate(images):
|
|
image_text = pytesseract.image_to_string(image, lang=ocr_languages)
|
|
text += f"Page {i + 1}:\n{image_text}\n\n"
|
|
|
|
return text
|
|
|
|
def process_image(
|
|
self,
|
|
link: str,
|
|
ocr_languages: Optional[str] = None,
|
|
) -> str:
|
|
try:
|
|
import pytesseract # noqa: F401
|
|
from PIL import Image # noqa: F401
|
|
except ImportError:
|
|
raise ImportError(
|
|
"`pytesseract` or `Pillow` package not found, "
|
|
"please run `pip install pytesseract Pillow`"
|
|
)
|
|
|
|
response = self.confluence.request(path=link, absolute=True)
|
|
text = ""
|
|
|
|
if (
|
|
response.status_code != 200
|
|
or response.content == b""
|
|
or response.content is None
|
|
):
|
|
return text
|
|
try:
|
|
image = Image.open(BytesIO(response.content))
|
|
except OSError:
|
|
return text
|
|
|
|
return pytesseract.image_to_string(image, lang=ocr_languages)
|
|
|
|
def process_doc(self, link: str) -> str:
|
|
try:
|
|
import docx2txt # noqa: F401
|
|
except ImportError:
|
|
raise ImportError(
|
|
"`docx2txt` package not found, please run `pip install docx2txt`"
|
|
)
|
|
|
|
response = self.confluence.request(path=link, absolute=True)
|
|
text = ""
|
|
|
|
if (
|
|
response.status_code != 200
|
|
or response.content == b""
|
|
or response.content is None
|
|
):
|
|
return text
|
|
file_data = BytesIO(response.content)
|
|
|
|
return docx2txt.process(file_data)
|
|
|
|
def process_xls(self, link: str) -> str:
|
|
import io
|
|
import os
|
|
|
|
try:
|
|
import xlrd # noqa: F401
|
|
|
|
except ImportError:
|
|
raise ImportError("`xlrd` package not found, please run `pip install xlrd`")
|
|
|
|
try:
|
|
import pandas as pd
|
|
|
|
except ImportError:
|
|
raise ImportError(
|
|
"`pandas` package not found, please run `pip install pandas`"
|
|
)
|
|
|
|
response = self.confluence.request(path=link, absolute=True)
|
|
text = ""
|
|
|
|
if (
|
|
response.status_code != 200
|
|
or response.content == b""
|
|
or response.content is None
|
|
):
|
|
return text
|
|
|
|
filename = os.path.basename(link)
|
|
# Getting the whole content of the url after filename,
|
|
# Example: ".csv?version=2&modificationDate=1631800010678&cacheVersion=1&api=v2"
|
|
file_extension = os.path.splitext(filename)[1]
|
|
|
|
if file_extension.startswith(
|
|
".csv"
|
|
): # if the extension found in the url is ".csv"
|
|
content_string = response.content.decode("utf-8")
|
|
df = pd.read_csv(io.StringIO(content_string))
|
|
text += df.to_string(index=False, header=False) + "\n\n"
|
|
else:
|
|
workbook = xlrd.open_workbook(file_contents=response.content)
|
|
for sheet in workbook.sheets():
|
|
text += f"{sheet.name}:\n"
|
|
for row in range(sheet.nrows):
|
|
for col in range(sheet.ncols):
|
|
text += f"{sheet.cell_value(row, col)}\t"
|
|
text += "\n"
|
|
text += "\n"
|
|
|
|
return text
|
|
|
|
def process_svg(
|
|
self,
|
|
link: str,
|
|
ocr_languages: Optional[str] = None,
|
|
) -> str:
|
|
try:
|
|
import pytesseract # noqa: F401
|
|
from PIL import Image # noqa: F401
|
|
from reportlab.graphics import renderPM # noqa: F401
|
|
from svglib.svglib import svg2rlg # noqa: F401
|
|
except ImportError:
|
|
raise ImportError(
|
|
"`pytesseract`, `Pillow`, `reportlab` or `svglib` package not found, "
|
|
"please run `pip install pytesseract Pillow reportlab svglib`"
|
|
)
|
|
|
|
response = self.confluence.request(path=link, absolute=True)
|
|
text = ""
|
|
|
|
if (
|
|
response.status_code != 200
|
|
or response.content == b""
|
|
or response.content is None
|
|
):
|
|
return text
|
|
|
|
drawing = svg2rlg(BytesIO(response.content))
|
|
|
|
img_data = BytesIO()
|
|
renderPM.drawToFile(drawing, img_data, fmt="PNG")
|
|
img_data.seek(0)
|
|
image = Image.open(img_data)
|
|
|
|
return pytesseract.image_to_string(image, lang=ocr_languages)
|