techartdev
386 lines
13 KiB
Python
386 lines
13 KiB
Python
"""OpenClaw Gateway API client."""
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from __future__ import annotations
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import asyncio
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import json
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import logging
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from typing import Any, AsyncIterator
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import aiohttp
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from .const import (
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API_CHAT_COMPLETIONS,
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API_MODELS,
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)
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_LOGGER = logging.getLogger(__name__)
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# Timeout for regular API calls (seconds)
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API_TIMEOUT = aiohttp.ClientTimeout(total=10)
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# Timeout for streaming chat completions (long-running)
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STREAM_TIMEOUT = aiohttp.ClientTimeout(total=300, sock_read=120)
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class OpenClawApiError(Exception):
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"""Base exception for OpenClaw API errors."""
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class OpenClawConnectionError(OpenClawApiError):
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"""Connection to OpenClaw gateway failed."""
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class OpenClawAuthError(OpenClawApiError):
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"""Authentication with OpenClaw gateway failed."""
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class OpenClawApiClient:
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"""HTTP client for the OpenClaw gateway API.
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Communicates with the OpenClaw gateway running inside the addon container.
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Supports both regular JSON API calls and SSE streaming for chat completions.
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"""
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def __init__(
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self,
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host: str,
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port: int,
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token: str,
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use_ssl: bool = False,
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session: aiohttp.ClientSession | None = None,
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) -> None:
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"""Initialize the API client.
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Args:
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host: Gateway hostname or IP.
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port: Gateway port number.
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token: Authentication token from openclaw.json.
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use_ssl: Use HTTPS instead of HTTP.
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session: Optional aiohttp session (reused from HA).
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"""
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self._host = host
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self._port = port
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self._token = token
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self._use_ssl = use_ssl
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self._session = session
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self._base_url = f"{'https' if use_ssl else 'http'}://{host}:{port}"
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@property
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def base_url(self) -> str:
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"""Return the base URL of the gateway."""
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return self._base_url
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def update_token(self, token: str) -> None:
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"""Update the authentication token (e.g., after addon restart)."""
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self._token = token
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def _headers(self) -> dict[str, str]:
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"""Build request headers with auth token."""
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return {
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"Authorization": f"Bearer {self._token}",
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"Content-Type": "application/json",
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}
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async def _get_session(self) -> aiohttp.ClientSession:
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"""Get or create an aiohttp session."""
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if self._session is None or self._session.closed:
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self._session = aiohttp.ClientSession()
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return self._session
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async def _request(
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self,
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method: str,
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path: str,
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timeout: aiohttp.ClientTimeout = API_TIMEOUT,
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**kwargs: Any,
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) -> dict[str, Any]:
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"""Make an HTTP request to the gateway.
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Args:
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method: HTTP method (GET, POST, etc.).
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path: API path (e.g., /api/status).
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timeout: Request timeout.
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**kwargs: Additional arguments passed to aiohttp request.
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Returns:
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Parsed JSON response.
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Raises:
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OpenClawConnectionError: If the gateway is unreachable.
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OpenClawAuthError: If authentication fails.
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OpenClawApiError: For other API errors.
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"""
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session = await self._get_session()
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url = f"{self._base_url}{path}"
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try:
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async with session.request(
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method,
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url,
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headers=self._headers(),
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timeout=timeout,
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**kwargs,
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) as resp:
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if resp.status == 401:
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raise OpenClawAuthError(
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"Authentication failed — check gateway token"
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)
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if resp.status == 403:
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raise OpenClawAuthError(
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"Access forbidden — token may be invalid"
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)
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if resp.status >= 400:
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text = await resp.text()
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raise OpenClawApiError(
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f"API error {resp.status}: {text[:200]}"
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)
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content_type = resp.content_type or ""
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if "json" not in content_type:
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text = await resp.text()
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raise OpenClawApiError(
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f"Unexpected response content type '{content_type}' (expected JSON). "
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f"The host/port may be wrong or the gateway returned an error page. "
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f"Response: {text[:200]}"
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)
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return await resp.json()
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except (aiohttp.ClientConnectorError, aiohttp.ClientOSError, asyncio.TimeoutError) as err:
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raise OpenClawConnectionError(
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f"Cannot connect to OpenClaw gateway at {url}: {err}"
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) from err
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# ─── Public API methods ────────────────────────────────────────────
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async def async_get_models(self) -> dict[str, Any]:
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"""Get available models (OpenAI-compatible).
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Returns:
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Dict with 'data' containing model objects.
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"""
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return await self._request("GET", API_MODELS)
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async def async_send_message(
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self,
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message: str,
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session_id: str | None = None,
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model: str | None = None,
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system_prompt: str | None = None,
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stream: bool = False,
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) -> dict[str, Any]:
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"""Send a chat message (non-streaming).
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Args:
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message: The user message text.
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session_id: Optional session/conversation ID.
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model: Optional model override.
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stream: If True, raises ValueError (use async_stream_message).
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Returns:
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Complete chat completion response.
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"""
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if stream:
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raise ValueError("Use async_stream_message() for streaming")
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messages: list[dict[str, str]] = []
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if system_prompt:
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messages.append({"role": "system", "content": system_prompt})
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messages.append({"role": "user", "content": message})
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payload: dict[str, Any] = {
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"messages": messages,
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"stream": False,
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}
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if model:
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payload["model"] = model
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# Pass session_id as a custom header or param if supported by gateway
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headers = self._headers()
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if session_id:
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headers["X-Session-Id"] = session_id
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session = await self._get_session()
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url = f"{self._base_url}{API_CHAT_COMPLETIONS}"
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try:
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async with session.post(
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url,
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headers=headers,
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json=payload,
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timeout=STREAM_TIMEOUT,
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) as resp:
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if resp.status == 401:
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raise OpenClawAuthError("Authentication failed")
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if resp.status >= 400:
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text = await resp.text()
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raise OpenClawApiError(f"Chat error {resp.status}: {text[:200]}")
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return await resp.json()
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except (aiohttp.ClientConnectorError, aiohttp.ClientOSError, asyncio.TimeoutError) as err:
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raise OpenClawConnectionError(
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f"Cannot connect to OpenClaw gateway: {err}"
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) from err
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async def async_stream_message(
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self,
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message: str,
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session_id: str | None = None,
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model: str | None = None,
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system_prompt: str | None = None,
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) -> AsyncIterator[str]:
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"""Send a chat message and stream the response via SSE.
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Yields delta content strings as they arrive from the gateway.
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Args:
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message: The user message text.
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session_id: Optional session/conversation ID.
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model: Optional model override.
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Yields:
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Content delta strings from the streaming response.
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"""
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messages: list[dict[str, str]] = []
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if system_prompt:
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messages.append({"role": "system", "content": system_prompt})
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messages.append({"role": "user", "content": message})
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payload: dict[str, Any] = {
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"messages": messages,
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"stream": True,
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}
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if model:
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payload["model"] = model
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headers = self._headers()
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if session_id:
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headers["X-Session-Id"] = session_id
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session = await self._get_session()
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url = f"{self._base_url}{API_CHAT_COMPLETIONS}"
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try:
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async with session.post(
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url,
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headers=headers,
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json=payload,
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timeout=STREAM_TIMEOUT,
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) as resp:
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if resp.status == 401:
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raise OpenClawAuthError("Authentication failed")
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if resp.status >= 400:
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text = await resp.text()
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raise OpenClawApiError(f"Chat error {resp.status}: {text[:200]}")
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# Parse SSE stream
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async for line in resp.content:
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decoded = line.decode("utf-8").strip()
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if not decoded or not decoded.startswith("data: "):
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continue
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data_str = decoded[6:] # strip "data: " prefix
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if data_str == "[DONE]":
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break
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try:
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chunk = json.loads(data_str)
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choices = chunk.get("choices", [])
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if choices:
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delta = choices[0].get("delta", {})
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content = delta.get("content")
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if content:
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yield content
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except json.JSONDecodeError:
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_LOGGER.debug("Skipping non-JSON SSE line: %s", data_str[:100])
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except (aiohttp.ClientConnectorError, aiohttp.ClientOSError, asyncio.TimeoutError) as err:
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raise OpenClawConnectionError(
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f"Cannot connect to OpenClaw gateway: {err}"
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) from err
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async def async_check_connection(self) -> bool:
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"""Check if the gateway is reachable, API is enabled, and auth works.
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The OpenClaw gateway only implements /v1/chat/completions (not
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/v1/models). We send a POST with an empty messages list — the gateway
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auth middleware validates the token first, then the endpoint returns a
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400 (or similar) for the invalid body. This proves:
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- Server is reachable.
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- The OpenAI-compatible API layer is enabled (enable_openai_api).
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- The auth token is accepted.
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If the route is not registered (API disabled) the SPA catch-all
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returns 200 text/html — detected via content-type check.
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Returns:
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True if connected and authenticated.
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Raises:
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OpenClawAuthError: If authentication fails.
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OpenClawApiError: If the gateway returns HTML (API not enabled).
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OpenClawConnectionError: If the gateway is unreachable.
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"""
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session = await self._get_session()
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url = f"{self._base_url}{API_CHAT_COMPLETIONS}"
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try:
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async with session.post(
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url,
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headers=self._headers(),
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json={"messages": [], "stream": False},
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timeout=API_TIMEOUT,
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) as resp:
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if resp.status in (401, 403):
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raise OpenClawAuthError(
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"Authentication failed — check gateway token"
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)
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content_type = resp.content_type or ""
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if "json" not in content_type:
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text = await resp.text()
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raise OpenClawApiError(
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f"Gateway returned '{content_type}' instead of JSON. "
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"The OpenAI-compatible API is likely not enabled. "
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"Enable 'enable_openai_api' in the addon settings "
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f"and restart. Response: {text[:200]}"
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)
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# Any JSON response (200, 400, 422, etc.) means the
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# endpoint exists, auth passed, and the API layer is active.
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return True
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except (aiohttp.ClientConnectorError, aiohttp.ClientOSError, asyncio.TimeoutError) as err:
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raise OpenClawConnectionError(
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f"Cannot connect to OpenClaw gateway at {url}: {err}"
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) from err
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async def async_check_alive(self) -> bool:
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"""Lightweight connectivity check — is the gateway process running?
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Sends a GET to the base URL. The SPA catch-all returns 200 HTML for
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any route, so any non-error HTTP response means the server is alive.
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Auth is NOT verified here (the SPA ignores tokens).
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Returns:
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True if the gateway HTTP server is responding.
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Raises:
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OpenClawConnectionError: If the gateway is unreachable.
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"""
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session = await self._get_session()
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try:
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async with session.get(
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self._base_url,
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timeout=API_TIMEOUT,
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) as resp:
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return resp.status < 500
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except (aiohttp.ClientConnectorError, aiohttp.ClientOSError, asyncio.TimeoutError) as err:
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raise OpenClawConnectionError(
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f"Cannot connect to OpenClaw gateway: {err}"
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) from err
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async def async_close(self) -> None:
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"""Close the HTTP session."""
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if self._session and not self._session.closed:
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await self._session.close()
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