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Thank you for contributing to LangChain!
- [ ] **PR title**: "package: description"
- Where "package" is whichever of langchain, community, core, etc. is
being modified. Use "docs: ..." for purely docs changes, "infra: ..."
for CI changes.
- Example: "community: add foobar LLM"
community: fix browserbase integration
docs: update docs
- [ ] **PR message**: ***Delete this entire checklist*** and replace
with
- **Description:** Updated BrowserbaseLoader to use the new python sdk.
- **Issue:** update browserbase integration with langchain
- **Dependencies:** n/a
- **Twitter handle:** @kylejeong21
- [ ] **Add tests and docs**: If you're adding a new integration, please
include
1. a test for the integration, preferably unit tests that do not rely on
network access,
2. an example notebook showing its use. It lives in
`docs/docs/integrations` directory.
- [ ] **Lint and test**: Run `make format`, `make lint` and `make test`
from the root of the package(s) you've modified. See contribution
guidelines for more: https://python.langchain.com/docs/contributing/
90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
from typing import Any, Dict, Iterator, Optional, Sequence
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from langchain_core.documents import Document
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from langchain_community.document_loaders.base import BaseLoader
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class BrowserbaseLoader(BaseLoader):
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"""Load pre-rendered web pages using a headless browser hosted on Browserbase.
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Depends on `browserbase` and `playwright` packages.
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Get your API key from https://browserbase.com
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"""
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def __init__(
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self,
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urls: Sequence[str],
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text_content: bool = False,
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api_key: Optional[str] = None,
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project_id: Optional[str] = None,
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session_id: Optional[str] = None,
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proxy: Optional[bool] = None,
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):
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self.urls = urls
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self.text_content = text_content
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self.session_id = session_id
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self.project_id = project_id
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self.proxy = proxy
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try:
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from browserbase import Browserbase
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except ImportError:
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raise ImportError(
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"You must run "
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"`pip install --upgrade "
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"browserbase playwright` "
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"to use the Browserbase loader."
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)
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self.browserbase = Browserbase(api_key=api_key)
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def lazy_load(self) -> Iterator[Document]:
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"""Load pages from URLs"""
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try:
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from playwright.sync_api import sync_playwright
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except ImportError:
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raise ImportError(
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"playwright is required for BrowserbaseLoader. "
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"Please run `pip install --upgrade playwright`."
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)
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for url in self.urls:
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with sync_playwright() as playwright:
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# Create or use existing session
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if self.session_id:
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session = self.browserbase.sessions.retrieve(id=self.session_id)
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else:
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if not self.project_id:
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raise ValueError("project_id is required to create a session")
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session_params: Dict[str, Any] = {"project_id": self.project_id}
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if self.proxy is not None:
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session_params["proxy"] = bool(self.proxy)
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session = self.browserbase.sessions.create(**session_params)
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# Connect to the remote session
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browser = playwright.chromium.connect_over_cdp(session.connect_url)
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context = browser.contexts[0]
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page = context.pages[0]
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# Navigate to URL and get content
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page.goto(url)
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# Get content based on the text_content flag
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if self.text_content:
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page_text = page.inner_text("body")
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content = str(page_text)
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else:
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page_html = page.content()
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content = str(page_html)
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# Close browser
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page.close()
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browser.close()
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yield Document(
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page_content=content,
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metadata={
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"url": url,
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},
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)
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