mirror of https://github.com/hwchase17/langchain
parent
5ca7ce77cd
commit
88d3ce12b8
File diff suppressed because one or more lines are too long
@ -0,0 +1,55 @@
|
||||
"""Loader that uses Diffbot to load webpages in text format."""
|
||||
import logging
|
||||
from typing import Any, List
|
||||
|
||||
import requests
|
||||
|
||||
from langchain.docstore.document import Document
|
||||
from langchain.document_loaders.base import BaseLoader
|
||||
|
||||
logger = logging.getLogger(__file__)
|
||||
|
||||
|
||||
class DiffbotLoader(BaseLoader):
|
||||
"""Loader that loads Diffbot file json."""
|
||||
|
||||
def __init__(
|
||||
self, api_token: str, urls: List[str], continue_on_failure: bool = True
|
||||
):
|
||||
"""Initialize with API token, ids, and key."""
|
||||
self.api_token = api_token
|
||||
self.urls = urls
|
||||
self.continue_on_failure = continue_on_failure
|
||||
|
||||
def _diffbot_api_url(self, diffbot_api: str) -> str:
|
||||
return f"https://api.diffbot.com/v3/{diffbot_api}"
|
||||
|
||||
def _get_diffbot_data(self, url: str) -> Any:
|
||||
"""Get Diffbot file from Diffbot REST API."""
|
||||
# TODO: Add support for other Diffbot APIs
|
||||
diffbot_url = self._diffbot_api_url("article")
|
||||
params = {
|
||||
"token": self.api_token,
|
||||
"url": url,
|
||||
}
|
||||
response = requests.get(diffbot_url, params=params, timeout=10)
|
||||
|
||||
# TODO: handle non-ok errors
|
||||
return response.json() if response.ok else {}
|
||||
|
||||
def load(self) -> List[Document]:
|
||||
"""Extract text from Diffbot on all the URLs and return Document instances"""
|
||||
docs: List[Document] = list()
|
||||
|
||||
for url in self.urls:
|
||||
try:
|
||||
data = self._get_diffbot_data(url)
|
||||
text = data["objects"][0]["text"] if "objects" in data else ""
|
||||
metadata = {"source": url}
|
||||
docs.append(Document(page_content=text, metadata=metadata))
|
||||
except Exception as e:
|
||||
if self.continue_on_failure:
|
||||
logger.error(f"Error fetching or processing {url}, exception: {e}")
|
||||
else:
|
||||
raise e
|
||||
return docs
|
Loading…
Reference in New Issue