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import time
from typing import AsyncGenerator, Generator, List, Optional, cast, Any
import requests
import aiohttp
from sseclient import SSEClient
from pydantic import ValidationError
from .core.auth_manager import AuthManager
from .logger import setup_logger
from .core.types.chat import ChatResponse, ChatResponseStream, ChatMessage, MessageRole
from .resources.completions import Completion
from .resources.new_chat import NewChat
from .utils.promp_system import WEB_DEVELOPMENT_PROMPT
from .core.exceptions import QwenAPIError
from .core.types.response.function_tool import ToolCall, Function
class Qwen:
def __init__(
self,
email: str,
password: str,
api_key: Optional[str] = None,
cookie: Optional[str] = None,
base_url: str = "https://chat.qwen.ai",
timeout: int = 600,
log_level: str = "INFO",
save_logs: bool = False,
):
self.new_chat = NewChat(self)
self.chat = Completion(self)
self.timeout = timeout
self.auth = AuthManager(email, password, token=api_key, cookie=cookie)
self.logger = setup_logger(log_level=log_level, save_logs=save_logs)
self.base_url = base_url
self._active_sessions = []
self._is_cancelled = False
def _build_headers(self) -> dict:
return {
"Content-Type": "application/json",
# "Authorization": self.auth.get_token(),
"Cookie": self.auth.get_cookie(),
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36",
"Host": "chat.qwen.ai",
"Origin": "https://chat.qwen.ai",
}
def _build_payload(
self,
chat_id: str,
messages: List[ChatMessage],
temperature: float,
model: str,
stream: bool,
max_tokens: Optional[int],
) -> dict:
validated_messages = []
for msg in messages:
if isinstance(msg, dict):
try:
validated_msg = ChatMessage(**msg)
except ValidationError as e:
raise QwenAPIError(f"Error validating message: {e}")
else:
validated_msg = msg
if validated_msg.role == "system":
if (
validated_msg.web_development
and validated_msg.content
and WEB_DEVELOPMENT_PROMPT not in validated_msg.content
):
updated_content = (
f"{validated_msg.content}\n\n{WEB_DEVELOPMENT_PROMPT}"
)
validated_msg = ChatMessage(
**{**validated_msg.model_dump(), "content": updated_content}
)
validated_messages.append(
{
"role": (
MessageRole.FUNCTION
if validated_msg.role == MessageRole.TOOL
else (
validated_msg.role
if validated_msg.role == MessageRole.SYSTEM
else MessageRole.USER
)
),
"content": (
validated_msg.blocks[0].text
if len(validated_msg.blocks) == 1
and validated_msg.blocks[0].block_type == "text"
else [
(
{"type": "text", "text": block.text}
if block.block_type == "text"
else (
{"type": "image", "image": str(block.url)}
if block.block_type == "image"
else {"type": block.block_type}
)
)
for block in validated_msg.blocks
]
),
"chat_type": (
"artifacts"
if getattr(validated_msg, "web_development", False)
else (
"search"
if getattr(validated_msg, "web_search", False)
else "t2t"
)
),
"feature_config": {
"thinking_enabled": getattr(validated_msg, "thinking", False),
"thinking_budget": getattr(validated_msg, "thinking_budget", 0),
"output_schema": getattr(validated_msg, "output_schema", None),
},
"extra": {},
}
)
return {
"stream": stream,
"incremental_output": True,
"chat_id": chat_id,
"chat_mode": "normal",
"model": model,
"parent_id": None,
"messages": validated_messages,
"temperature": temperature,
"max_tokens": max_tokens,
"timestamp": int(time.time() * 1000)
}
def _process_response(self, response: requests.Response) -> ChatResponse:
from .core.types.chat import Choice, Message, Extra
client = SSEClient(cast(Any, response))
extra = None
text = ""
cnt_events=0
for event in client.events():
cnt_events += cnt_events
if event.data:
try:
data = json.loads(event.data)
if data["choices"][0]["delta"].get("role") == "function":
extra_data = data["choices"][0]["delta"].get("extra")
if extra_data:
extra = Extra(**extra_data)
text += data["choices"][0]["delta"].get("content")
except json.JSONDecodeError:
continue
if cnt_events == 0:
# there's no events here, trying to get the data directly from the body response
res = response.json()
data = res["data"]
if data["choices"][0]["message"].get("role") == "function":
extra_data = data["choices"][0]["message"].get("extra")
if extra_data:
extra = Extra(**extra_data)
text += data["choices"][0]["message"].get("content")
message = Message(role="assistant", content=text)
choice = Choice(message=message, extra=extra)
return ChatResponse(choices=choice)
def _process_response_tool(
self, response: requests.Response
) -> ChatResponse | QwenAPIError:
from .core.types.chat import Choice, Message, Extra
client = SSEClient(cast(Any, response))
extra = None
text = ""
for event in client.events():
if event.data:
try:
data = json.loads(event.data)
if data["choices"][0]["delta"].get("role") == "function":
extra_data = data["choices"][0]["delta"].get("extra")
if extra_data:
extra = Extra(**extra_data)
text += data["choices"][0]["delta"].get("content")
except json.JSONDecodeError:
continue
try:
self.logger.debug(f"text: {text}")
parse_json = json.loads(text)
if isinstance(parse_json["arguments"], str):
parse_arguments = json.loads(parse_json["arguments"])
else:
parse_arguments = parse_json["arguments"]
self.logger.debug(f"parse_json: {parse_json}")
self.logger.debug(f"arguments: {parse_arguments}")
function = Function(name=parse_json["name"], arguments=parse_arguments)
message = Message(
role="assistant", content="", tool_calls=[ToolCall(function=function)]
)
choice = Choice(message=message, extra=extra)
return ChatResponse(choices=choice)
except json.JSONDecodeError as e:
return QwenAPIError(f"Error decoding JSON response: {e}")
async def _process_aresponse(
self, response: aiohttp.ClientResponse, session: aiohttp.ClientSession
) -> ChatResponse:
from .core.types.chat import Choice, Message, Extra
# Track this session
self._active_sessions.append(session)
try:
extra = None
text = ""
async for line in response.content:
# Check if cancelled
if self._is_cancelled:
self.logger.info("Async response processing cancelled")
break
if line.startswith(b"data:"):
try:
data = json.loads(line[5:].decode())
if data["choices"][0]["delta"].get("role") == "function":
extra_data = data["choices"][0]["delta"].get("extra")
if extra_data:
extra = Extra(**extra_data)
text += data["choices"][0]["delta"].get("content")
except json.JSONDecodeError:
continue
message = Message(role="assistant", content=text)
choice = Choice(message=message, extra=extra)
return ChatResponse(choices=choice)
except aiohttp.ClientError as e:
self.logger.error(f"Client error: {e}")
raise
finally:
# Remove from active sessions
if session in self._active_sessions:
self._active_sessions.remove(session)
await session.close()
async def _process_aresponse_tool(
self, response: aiohttp.ClientResponse, session: aiohttp.ClientSession
) -> ChatResponse | QwenAPIError:
from .core.types.chat import Choice, Message, Extra
# Track this session
self._active_sessions.append(session)
try:
extra = None
text = ""
async for line in response.content:
# Check if cancelled
if self._is_cancelled:
self.logger.info("Async tool response processing cancelled")
break
if line.startswith(b"data:"):
try:
data = json.loads(line[5:].decode())
if data["choices"][0]["delta"].get("role") == "function":
extra_data = data["choices"][0]["delta"].get("extra")
if extra_data:
extra = Extra(**extra_data)
text += data["choices"][0]["delta"].get("content")
except json.JSONDecodeError:
continue
try:
self.logger.debug(f"text: {text}")
parse_json = json.loads(text)
if isinstance(parse_json["arguments"], str):
parse_arguments = json.loads(parse_json["arguments"])
else:
parse_arguments = parse_json["arguments"]
self.logger.debug(f"parse_json: {parse_json}")
self.logger.debug(f"arguments: {parse_arguments}")
function = Function(name=parse_json["name"], arguments=parse_arguments)
message = Message(
role="assistant",
content="",
tool_calls=[ToolCall(function=function)],
)
choice = Choice(message=message, extra=extra)
return ChatResponse(choices=choice)
except json.JSONDecodeError as e:
self.logger.error(f"Error decoding JSON response: {e}")
return QwenAPIError(f"Error decoding JSON response: {e}")
except aiohttp.ClientError as e:
self.logger.error(f"Client error: {e}")
raise
finally:
# Remove from active sessions
if session in self._active_sessions:
self._active_sessions.remove(session)
await session.close()
def _process_stream(
self, response: requests.Response
) -> Generator[ChatResponseStream, None, None]:
client = SSEClient(cast(Any, response))
content = ""
for event in client.events():
# Check if cancelled
if self._is_cancelled:
self.logger.info("Stream processing cancelled")
break
if event.data:
try:
data = json.loads(event.data)
if not "choices" in data:
continue
content += data["choices"][0]["delta"].get("content")
yield ChatResponseStream(
**data,
message=ChatMessage(
role=data["choices"][0]["delta"].get("role"),
content=content,
),
)
except json.JSONDecodeError:
continue
async def _process_astream(
self, response: aiohttp.ClientResponse, session: aiohttp.ClientSession
) -> AsyncGenerator[ChatResponseStream, None]:
# Track this session
self._active_sessions.append(session)
try:
content = ""
import asyncio
# Create a task for reading content
async def read_content():
async for line in response.content:
if self._is_cancelled:
break
yield line
# Process stream with cancellation support
async for line in read_content():
# Check if cancelled before processing each line
if self._is_cancelled:
self.logger.info("Async stream processing cancelled")
break
if line.startswith(b"data:"):
try:
data = json.loads(line[5:].decode())
content += data["choices"][0]["delta"].get("content")
# Yield the chunk
yield ChatResponseStream(
**data,
message=ChatMessage(
role=data["choices"][0]["delta"].get("role"),
content=content,
),
)
# Give other coroutines a chance to run and check cancellation
await asyncio.sleep(0)
except json.JSONDecodeError:
continue
except (aiohttp.ClientError, asyncio.CancelledError) as e:
if isinstance(e, asyncio.CancelledError):
self.logger.info("Stream was cancelled")
else:
self.logger.error(f"Client error: {e}")
# Don't re-raise CancelledError, just clean up
if not isinstance(e, asyncio.CancelledError):
raise
finally:
self.logger.debug(f"Closing session")
# Remove from active sessions
if session in self._active_sessions:
self._active_sessions.remove(session)
# Force close the session immediately when cancelled
if not session.closed:
await session.close()
def cancel(self):
"""
Cancel all active requests and close connections.
"""
self._is_cancelled = True
self.logger.info("Cancelling all active requests...")
# Close all active sessions aggressively
for session in self._active_sessions[
:
]: # Copy list to avoid modification during iteration
try:
if hasattr(session, "close") and not session.closed:
# For aiohttp sessions, close immediately
if hasattr(session, "_connector") and session._connector:
# Force close connector immediately
session._connector._ssl_shutdown_timeout = 0.1
session._connector.close()
# Also try to close the session itself
import asyncio
if asyncio.iscoroutinefunction(session.close):
# Schedule session closure if we're in an async context
try:
loop = asyncio.get_running_loop()
task = loop.create_task(session.close())
# Cancel the task immediately to force close
task.cancel()
except RuntimeError:
# No running loop, can't close async session synchronously
pass
self.logger.debug(f"Session {id(session)} marked for closure")
except Exception as e:
# Suppress SSL shutdown timeout warnings as they're expected during cancellation
if "SSL shutdown timed out" not in str(
e
) and "CancelledError" not in str(e):
self.logger.warning(f"Error closing session {id(session)}: {e}")
# Clear the sessions list
self._active_sessions.clear()
self.logger.info("All active sessions cancelled")
def close(self):
"""
Close the client and clean up resources.
"""
self.cancel()
self.logger.info("Qwen client closed")
def __enter__(self):
"""Context manager entry."""
return self
def __exit__(self, exc_type, exc_val, exc_tb):
"""Context manager exit."""
self.close()
|