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abf354bb05
* feat(dashboard): stream agent chat via @langchain/react v2 protocol Replace the bespoke SSE + React Query polling path with LangGraph’s v2 event stream through credentialed dashboard proxies. Run starts go through stream commands; mid-run follow-ups still queue via /messages. * fix import path * fix tests after rebase * format * PR feedback * improved model fallback * fix image handling * embrace sdk * cleanup * cr * more cleanup * fix cors * harden security --------- Co-authored-by: open-swe[bot] <215916821+open-swe[bot]@users.noreply.github.com> Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
"""Shared LangGraph thread helpers for webhooks and the dashboard."""
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from __future__ import annotations
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import logging
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import os
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from typing import Any
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from langgraph_sdk import get_client
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logger = logging.getLogger(__name__)
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def langgraph_url() -> str:
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return os.environ.get("LANGGRAPH_URL") or os.environ.get(
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"LANGGRAPH_URL_PROD", "http://localhost:2024"
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)
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def langgraph_client():
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return get_client(url=langgraph_url())
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async def get_thread_active_status(thread_id: str) -> bool | None:
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"""Return whether the thread is active, or None when status cannot be determined."""
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try:
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thread = await langgraph_client().threads.get(thread_id)
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status = thread.get("status", "idle") if isinstance(thread, dict) else "idle"
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logger.info("Thread %s status check: status=%s", thread_id, status)
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return status == "busy"
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except Exception as exc: # noqa: BLE001
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logger.warning("Failed to get thread status for %s: %s", thread_id, exc)
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return None
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async def is_thread_active(thread_id: str) -> bool:
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"""Return whether the thread currently has a running run."""
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return await get_thread_active_status(thread_id) is True
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async def queue_message_for_thread(
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thread_id: str, message_content: str | list[dict[str, Any]] | dict[str, Any]
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) -> bool:
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"""Queue a follow-up message for a busy thread (FIFO store namespace)."""
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client = langgraph_client()
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try:
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namespace = ("queue", thread_id)
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key = "pending_messages"
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new_message = {"content": message_content}
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existing_messages: list[dict[str, Any]] = []
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try:
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existing_item = await client.store.get_item(namespace, key)
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if existing_item and existing_item.get("value"):
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existing_messages = existing_item["value"].get("messages", [])
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except Exception: # noqa: BLE001
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logger.debug("No existing queued messages for thread %s", thread_id)
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existing_messages.append(new_message)
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await client.store.put_item(namespace, key, {"messages": existing_messages})
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logger.info(
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"Queued message for thread %s (total queued: %d)",
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thread_id,
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len(existing_messages),
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)
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return True
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except Exception:
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logger.exception("Failed to queue message for thread %s", thread_id)
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return False
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