mirror of
https://github.com/hwchase17/langchain
synced 2024-11-04 06:00:26 +00:00
71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
|
import base64
|
||
|
|
import email
|
||
|
|
from typing import Dict, Optional, Type
|
||
|
|
|
||
|
|
from langchain_core.callbacks import CallbackManagerForToolRun
|
||
|
|
from langchain_core.pydantic_v1 import BaseModel, Field
|
||
|
|
|
||
|
|
from langchain_community.tools.gmail.base import GmailBaseTool
|
||
|
|
from langchain_community.tools.gmail.utils import clean_email_body
|
||
|
|
|
||
|
|
|
||
|
|
class SearchArgsSchema(BaseModel):
|
||
|
|
"""Input for GetMessageTool."""
|
||
|
|
|
||
|
|
message_id: str = Field(
|
||
|
|
...,
|
||
|
|
description="The unique ID of the email message, retrieved from a search.",
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class GmailGetMessage(GmailBaseTool):
|
||
|
|
"""Tool that gets a message by ID from Gmail."""
|
||
|
|
|
||
|
|
name: str = "get_gmail_message"
|
||
|
|
description: str = (
|
||
|
|
"Use this tool to fetch an email by message ID."
|
||
|
|
" Returns the thread ID, snippet, body, subject, and sender."
|
||
|
|
)
|
||
|
|
args_schema: Type[SearchArgsSchema] = SearchArgsSchema
|
||
|
|
|
||
|
|
def _run(
|
||
|
|
self,
|
||
|
|
message_id: str,
|
||
|
|
run_manager: Optional[CallbackManagerForToolRun] = None,
|
||
|
|
) -> Dict:
|
||
|
|
"""Run the tool."""
|
||
|
|
query = (
|
||
|
|
self.api_resource.users()
|
||
|
|
.messages()
|
||
|
|
.get(userId="me", format="raw", id=message_id)
|
||
|
|
)
|
||
|
|
message_data = query.execute()
|
||
|
|
raw_message = base64.urlsafe_b64decode(message_data["raw"])
|
||
|
|
|
||
|
|
email_msg = email.message_from_bytes(raw_message)
|
||
|
|
|
||
|
|
subject = email_msg["Subject"]
|
||
|
|
sender = email_msg["From"]
|
||
|
|
|
||
|
|
message_body = ""
|
||
|
|
if email_msg.is_multipart():
|
||
|
|
for part in email_msg.walk():
|
||
|
|
ctype = part.get_content_type()
|
||
|
|
cdispo = str(part.get("Content-Disposition"))
|
||
|
|
if ctype == "text/plain" and "attachment" not in cdispo:
|
||
|
|
message_body = part.get_payload(decode=True).decode("utf-8")
|
||
|
|
break
|
||
|
|
else:
|
||
|
|
message_body = email_msg.get_payload(decode=True).decode("utf-8")
|
||
|
|
|
||
|
|
body = clean_email_body(message_body)
|
||
|
|
|
||
|
|
return {
|
||
|
|
"id": message_id,
|
||
|
|
"threadId": message_data["threadId"],
|
||
|
|
"snippet": message_data["snippet"],
|
||
|
|
"body": body,
|
||
|
|
"subject": subject,
|
||
|
|
"sender": sender,
|
||
|
|
}
|