mirror of
https://github.com/langbot-app/LangBot.git
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feat: Implement WebSocket long connection client for WeChat Work AI Bot (#2054)
* feat: Implement WebSocket long connection client for WeChat Work AI Bot - Added WecomBotWsClient to handle WebSocket connections for receiving messages and sending replies. - Introduced a new migration (dbm022) to add 'enable-webhook' field to existing wecombot adapter configs, ensuring backward compatibility. - Updated WecomBotAdapter to support both WebSocket and webhook modes based on the new configuration. - Enhanced YAML configuration for WecomBot to include 'enable-webhook' and 'Secret' fields, adjusting requirements accordingly. - Incremented database version to 22 to reflect schema changes. * fix:db enable-webhook is false * fix:add logic * fix:Removed an unnecessary configuration check * fix: migration * fix: update migration * fix:migration
This commit is contained in:
fdc310
@@ -199,6 +199,253 @@ class StreamSessionManager:
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self._msg_index.pop(msg_id, None)
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async def download_encrypted_file(download_url: str, encoding_aes_key: str, logger: EventLogger) -> Optional[str]:
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"""Download an AES-encrypted file from WeChat Work and return as data URI.
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Args:
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download_url: The encrypted file download URL.
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encoding_aes_key: The AES key used for decryption (base64-encoded, without trailing '=').
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logger: Logger instance.
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Returns:
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A data URI string (e.g. 'data:image/jpeg;base64,...') or None on failure.
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"""
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if not download_url:
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return None
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async with httpx.AsyncClient() as client:
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response = await client.get(download_url)
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if response.status_code != 200:
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await logger.error(f'failed to get file: {response.text}')
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return None
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encrypted_bytes = response.content
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aes_key = base64.b64decode(encoding_aes_key + '=')
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iv = aes_key[:16]
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cipher = AES.new(aes_key, AES.MODE_CBC, iv)
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decrypted = cipher.decrypt(encrypted_bytes)
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pad_len = decrypted[-1]
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decrypted = decrypted[:-pad_len]
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if decrypted.startswith(b'\xff\xd8'):
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mime_type = 'image/jpeg'
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elif decrypted.startswith(b'\x89PNG'):
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mime_type = 'image/png'
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elif decrypted.startswith((b'GIF87a', b'GIF89a')):
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mime_type = 'image/gif'
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elif decrypted.startswith(b'BM'):
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mime_type = 'image/bmp'
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elif decrypted.startswith(b'II*\x00') or decrypted.startswith(b'MM\x00*'):
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mime_type = 'image/tiff'
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else:
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mime_type = 'application/octet-stream'
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base64_str = base64.b64encode(decrypted).decode('utf-8')
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return f'data:{mime_type};base64,{base64_str}'
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async def parse_wecom_bot_message(
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msg_json: dict[str, Any], encoding_aes_key: str, logger: EventLogger
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) -> dict[str, Any]:
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"""Parse a decrypted WeChat Work AI Bot message JSON into a unified message dict.
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This is the shared message parsing logic used by both webhook and WebSocket modes.
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Args:
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msg_json: The decrypted message JSON from WeChat Work.
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encoding_aes_key: AES key for file decryption.
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logger: Logger instance.
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Returns:
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A dict suitable for constructing a WecomBotEvent.
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"""
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message_data: dict[str, Any] = {}
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msg_type = msg_json.get('msgtype', '')
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if msg_type:
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message_data['msgtype'] = msg_type
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if msg_json.get('chattype', '') == 'single':
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message_data['type'] = 'single'
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elif msg_json.get('chattype', '') == 'group':
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message_data['type'] = 'group'
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max_inline_file_size = 5 * 1024 * 1024
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async def _safe_download(url: str):
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if not url:
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return None
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return await download_encrypted_file(url, encoding_aes_key, logger)
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if msg_type == 'text':
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message_data['content'] = msg_json.get('text', {}).get('content')
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elif msg_type == 'markdown':
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message_data['content'] = msg_json.get('markdown', {}).get('content') or msg_json.get('text', {}).get(
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'content', ''
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)
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elif msg_type == 'image':
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picurl = msg_json.get('image', {}).get('url', '')
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base64_data = await _safe_download(picurl)
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if base64_data:
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message_data['picurl'] = base64_data
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message_data['images'] = [base64_data]
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elif msg_type == 'voice':
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voice_info = msg_json.get('voice', {}) or {}
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download_url = voice_info.get('url')
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message_data['voice'] = {
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'url': download_url,
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'md5sum': voice_info.get('md5sum') or voice_info.get('md5'),
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'filesize': voice_info.get('filesize') or voice_info.get('size'),
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'sdkfileid': voice_info.get('sdkfileid') or voice_info.get('fileid'),
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}
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if voice_info.get('content'):
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message_data['content'] = voice_info.get('content')
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if (message_data['voice'].get('filesize') or 0) <= max_inline_file_size:
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voice_base64 = await _safe_download(download_url)
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if voice_base64:
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message_data['voice']['base64'] = voice_base64
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elif msg_type == 'video':
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video_info = msg_json.get('video', {}) or {}
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download_url = video_info.get('url')
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video_data = {
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'url': download_url,
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'filesize': video_info.get('filesize') or video_info.get('size'),
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'sdkfileid': video_info.get('sdkfileid') or video_info.get('fileid'),
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'md5sum': video_info.get('md5sum') or video_info.get('md5'),
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'filename': video_info.get('filename') or video_info.get('name'),
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}
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if (video_data.get('filesize') or 0) <= max_inline_file_size:
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video_base64 = await _safe_download(download_url)
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if video_base64:
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video_data['base64'] = video_base64
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message_data['video'] = video_data
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elif msg_type == 'file':
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file_info = msg_json.get('file', {}) or {}
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download_url = file_info.get('url') or file_info.get('fileurl')
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file_data = {
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'filename': file_info.get('filename') or file_info.get('name'),
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'filesize': file_info.get('filesize') or file_info.get('size'),
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'md5sum': file_info.get('md5sum') or file_info.get('md5'),
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'sdkfileid': file_info.get('sdkfileid') or file_info.get('fileid'),
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'download_url': download_url,
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'extra': file_info,
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}
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if (file_data.get('filesize') or 0) <= max_inline_file_size:
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file_base64 = await _safe_download(download_url)
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if file_base64:
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file_data['base64'] = file_base64
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message_data['file'] = file_data
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elif msg_type == 'link':
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message_data['link'] = msg_json.get('link', {})
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if not message_data.get('content'):
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title = message_data['link'].get('title', '')
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desc = message_data['link'].get('description') or message_data['link'].get('digest', '')
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message_data['content'] = '\n'.join(filter(None, [title, desc]))
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elif msg_type == 'mixed':
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items = msg_json.get('mixed', {}).get('msg_item', [])
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texts = []
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images = []
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files = []
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voices = []
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videos = []
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links = []
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for item in items:
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item_type = item.get('msgtype')
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if item_type == 'text':
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texts.append(item.get('text', {}).get('content', ''))
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elif item_type == 'image':
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img_url = item.get('image', {}).get('url')
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base64_data = await _safe_download(img_url)
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if base64_data:
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images.append(base64_data)
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elif item_type == 'file':
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file_info = item.get('file', {}) or {}
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download_url = file_info.get('url') or file_info.get('fileurl')
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file_data = {
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'filename': file_info.get('filename') or file_info.get('name'),
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'filesize': file_info.get('filesize') or file_info.get('size'),
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'md5sum': file_info.get('md5sum') or file_info.get('md5'),
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'sdkfileid': file_info.get('sdkfileid') or file_info.get('fileid'),
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'download_url': download_url,
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'extra': file_info,
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}
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if (file_data.get('filesize') or 0) <= max_inline_file_size:
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file_base64 = await _safe_download(download_url)
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if file_base64:
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file_data['base64'] = file_base64
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files.append(file_data)
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elif item_type == 'voice':
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voice_info = item.get('voice', {}) or {}
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download_url = voice_info.get('url')
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voice_data = {
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'url': download_url,
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'md5sum': voice_info.get('md5sum') or voice_info.get('md5'),
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'filesize': voice_info.get('filesize') or voice_info.get('size'),
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'sdkfileid': voice_info.get('sdkfileid') or voice_info.get('fileid'),
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}
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if voice_info.get('content'):
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texts.append(voice_info.get('content'))
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if (voice_data.get('filesize') or 0) <= max_inline_file_size:
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voice_base64 = await _safe_download(download_url)
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if voice_base64:
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voice_data['base64'] = voice_base64
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voices.append(voice_data)
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elif item_type == 'video':
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video_info = item.get('video', {}) or {}
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download_url = video_info.get('url')
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video_data = {
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'url': download_url,
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'filesize': video_info.get('filesize') or video_info.get('size'),
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'sdkfileid': video_info.get('sdkfileid') or video_info.get('fileid'),
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'md5sum': video_info.get('md5sum') or video_info.get('md5'),
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'filename': video_info.get('filename') or video_info.get('name'),
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}
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if (video_data.get('filesize') or 0) <= max_inline_file_size:
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video_base64 = await _safe_download(download_url)
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if video_base64:
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video_data['base64'] = video_base64
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videos.append(video_data)
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elif item_type == 'link':
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links.append(item.get('link', {}))
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if texts:
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message_data['content'] = ' '.join(texts)
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if images:
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message_data['images'] = images
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message_data['picurl'] = images[0]
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if files:
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message_data['files'] = files
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message_data['file'] = files[0]
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if voices:
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message_data['voices'] = voices
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message_data['voice'] = voices[0]
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if videos:
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message_data['videos'] = videos
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message_data['video'] = videos[0]
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if links:
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message_data['link'] = links[0]
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if items:
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message_data['attachments'] = items
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else:
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message_data['raw_msg'] = msg_json
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from_info = msg_json.get('from', {})
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message_data['userid'] = from_info.get('userid', '')
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message_data['username'] = from_info.get('alias', '') or from_info.get('name', '') or from_info.get('userid', '')
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if msg_json.get('chattype', '') == 'group':
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message_data['chatid'] = msg_json.get('chatid', '')
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message_data['chatname'] = msg_json.get('chatname', '') or msg_json.get('chatid', '')
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message_data['msgid'] = msg_json.get('msgid', '')
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if msg_json.get('aibotid'):
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message_data['aibotid'] = msg_json.get('aibotid', '')
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return message_data
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class WecomBotClient:
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def __init__(self, Token: str, EnCodingAESKey: str, Corpid: str, logger: EventLogger, unified_mode: bool = False):
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"""企业微信智能机器人客户端。
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@@ -455,196 +702,7 @@ class WecomBotClient:
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return await self._handle_post_initial_response(msg_json, nonce)
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async def get_message(self, msg_json):
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message_data = {}
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msg_type = msg_json.get('msgtype', '')
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if msg_type:
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message_data['msgtype'] = msg_type
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if msg_json.get('chattype', '') == 'single':
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message_data['type'] = 'single'
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elif msg_json.get('chattype', '') == 'group':
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message_data['type'] = 'group'
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max_inline_file_size = 5 * 1024 * 1024 # avoid decoding very large payloads by default
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async def _safe_download(url: str):
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if not url:
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return None
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return await self.download_url_to_base64(url, self.EnCodingAESKey)
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if msg_type == 'text':
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message_data['content'] = msg_json.get('text', {}).get('content')
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elif msg_type == 'markdown':
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message_data['content'] = msg_json.get('markdown', {}).get('content') or msg_json.get('text', {}).get(
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'content', ''
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)
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elif msg_type == 'image':
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picurl = msg_json.get('image', {}).get('url', '')
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base64_data = await _safe_download(picurl)
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if base64_data:
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message_data['picurl'] = base64_data
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message_data['images'] = [base64_data]
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elif msg_type == 'voice':
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voice_info = msg_json.get('voice', {}) or {}
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download_url = voice_info.get('url')
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message_data['voice'] = {
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'url': download_url,
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'md5sum': voice_info.get('md5sum') or voice_info.get('md5'),
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'filesize': voice_info.get('filesize') or voice_info.get('size'),
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'sdkfileid': voice_info.get('sdkfileid') or voice_info.get('fileid'),
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}
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# 企业微信智能转写文本（如果已有）直接复用，避免重复转写
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if voice_info.get('content'):
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message_data['content'] = voice_info.get('content')
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if (message_data['voice'].get('filesize') or 0) <= max_inline_file_size:
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voice_base64 = await _safe_download(download_url)
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if voice_base64:
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message_data['voice']['base64'] = voice_base64
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elif msg_type == 'video':
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video_info = msg_json.get('video', {}) or {}
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download_url = video_info.get('url')
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video_data = {
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'url': download_url,
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'filesize': video_info.get('filesize') or video_info.get('size'),
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'sdkfileid': video_info.get('sdkfileid') or video_info.get('fileid'),
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'md5sum': video_info.get('md5sum') or video_info.get('md5'),
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'filename': video_info.get('filename') or video_info.get('name'),
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}
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if (video_data.get('filesize') or 0) <= max_inline_file_size:
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video_base64 = await _safe_download(download_url)
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if video_base64:
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video_data['base64'] = video_base64
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message_data['video'] = video_data
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elif msg_type == 'file':
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file_info = msg_json.get('file', {}) or {}
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download_url = file_info.get('url') or file_info.get('fileurl')
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file_data = {
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'filename': file_info.get('filename') or file_info.get('name'),
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'filesize': file_info.get('filesize') or file_info.get('size'),
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'md5sum': file_info.get('md5sum') or file_info.get('md5'),
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'sdkfileid': file_info.get('sdkfileid') or file_info.get('fileid'),
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'download_url': download_url,
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'extra': file_info,
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}
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if (file_data.get('filesize') or 0) <= max_inline_file_size:
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file_base64 = await _safe_download(download_url)
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if file_base64:
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file_data['base64'] = file_base64
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message_data['file'] = file_data
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elif msg_type == 'link':
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message_data['link'] = msg_json.get('link', {})
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if not message_data.get('content'):
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title = message_data['link'].get('title', '')
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desc = message_data['link'].get('description') or message_data['link'].get('digest', '')
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message_data['content'] = '\n'.join(filter(None, [title, desc]))
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elif msg_type == 'mixed':
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items = msg_json.get('mixed', {}).get('msg_item', [])
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texts = []
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images = []
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files = []
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voices = []
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videos = []
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links = []
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for item in items:
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item_type = item.get('msgtype')
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if item_type == 'text':
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texts.append(item.get('text', {}).get('content', ''))
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elif item_type == 'image':
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img_url = item.get('image', {}).get('url')
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base64_data = await _safe_download(img_url)
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if base64_data:
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images.append(base64_data)
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elif item_type == 'file':
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file_info = item.get('file', {}) or {}
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download_url = file_info.get('url') or file_info.get('fileurl')
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file_data = {
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'filename': file_info.get('filename') or file_info.get('name'),
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'filesize': file_info.get('filesize') or file_info.get('size'),
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'md5sum': file_info.get('md5sum') or file_info.get('md5'),
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'sdkfileid': file_info.get('sdkfileid') or file_info.get('fileid'),
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'download_url': download_url,
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'extra': file_info,
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}
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if (file_data.get('filesize') or 0) <= max_inline_file_size:
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file_base64 = await _safe_download(download_url)
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if file_base64:
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file_data['base64'] = file_base64
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files.append(file_data)
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elif item_type == 'voice':
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voice_info = item.get('voice', {}) or {}
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download_url = voice_info.get('url')
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voice_data = {
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'url': download_url,
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'md5sum': voice_info.get('md5sum') or voice_info.get('md5'),
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'filesize': voice_info.get('filesize') or voice_info.get('size'),
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'sdkfileid': voice_info.get('sdkfileid') or voice_info.get('fileid'),
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}
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if voice_info.get('content'):
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texts.append(voice_info.get('content'))
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if (voice_data.get('filesize') or 0) <= max_inline_file_size:
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voice_base64 = await _safe_download(download_url)
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if voice_base64:
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||||
voice_data['base64'] = voice_base64
|
||||
voices.append(voice_data)
|
||||
elif item_type == 'video':
|
||||
video_info = item.get('video', {}) or {}
|
||||
download_url = video_info.get('url')
|
||||
video_data = {
|
||||
'url': download_url,
|
||||
'filesize': video_info.get('filesize') or video_info.get('size'),
|
||||
'sdkfileid': video_info.get('sdkfileid') or video_info.get('fileid'),
|
||||
'md5sum': video_info.get('md5sum') or video_info.get('md5'),
|
||||
'filename': video_info.get('filename') or video_info.get('name'),
|
||||
}
|
||||
if (video_data.get('filesize') or 0) <= max_inline_file_size:
|
||||
video_base64 = await _safe_download(download_url)
|
||||
if video_base64:
|
||||
video_data['base64'] = video_base64
|
||||
videos.append(video_data)
|
||||
elif item_type == 'link':
|
||||
links.append(item.get('link', {}))
|
||||
|
||||
if texts:
|
||||
message_data['content'] = ' '.join(texts) # 拼接所有 text
|
||||
if images:
|
||||
message_data['images'] = images
|
||||
message_data['picurl'] = images[0] # 只保留第一个 image
|
||||
if files:
|
||||
message_data['files'] = files
|
||||
message_data['file'] = files[0]
|
||||
if voices:
|
||||
message_data['voices'] = voices
|
||||
message_data['voice'] = voices[0]
|
||||
if videos:
|
||||
message_data['videos'] = videos
|
||||
message_data['video'] = videos[0]
|
||||
if links:
|
||||
message_data['link'] = links[0]
|
||||
if items:
|
||||
message_data['attachments'] = items
|
||||
else:
|
||||
message_data['raw_msg'] = msg_json
|
||||
|
||||
# Extract user information
|
||||
from_info = msg_json.get('from', {})
|
||||
message_data['userid'] = from_info.get('userid', '')
|
||||
message_data['username'] = (
|
||||
from_info.get('alias', '') or from_info.get('name', '') or from_info.get('userid', '')
|
||||
)
|
||||
|
||||
# Extract chat/group information
|
||||
if msg_json.get('chattype', '') == 'group':
|
||||
message_data['chatid'] = msg_json.get('chatid', '')
|
||||
# Try to get group name if available
|
||||
message_data['chatname'] = msg_json.get('chatname', '') or msg_json.get('chatid', '')
|
||||
|
||||
message_data['msgid'] = msg_json.get('msgid', '')
|
||||
|
||||
if msg_json.get('aibotid'):
|
||||
message_data['aibotid'] = msg_json.get('aibotid', '')
|
||||
|
||||
return message_data
|
||||
return await parse_wecom_bot_message(msg_json, self.EnCodingAESKey, self.logger)
|
||||
|
||||
async def _handle_message(self, event: wecombotevent.WecomBotEvent):
|
||||
"""
|
||||
@@ -712,39 +770,7 @@ class WecomBotClient:
|
||||
return decorator
|
||||
|
||||
async def download_url_to_base64(self, download_url, encoding_aes_key):
|
||||
async with httpx.AsyncClient() as client:
|
||||
response = await client.get(download_url)
|
||||
if response.status_code != 200:
|
||||
await self.logger.error(f'failed to get file: {response.text}')
|
||||
return None
|
||||
|
||||
encrypted_bytes = response.content
|
||||
|
||||
aes_key = base64.b64decode(encoding_aes_key + '=') # base64 补齐
|
||||
iv = aes_key[:16]
|
||||
|
||||
cipher = AES.new(aes_key, AES.MODE_CBC, iv)
|
||||
decrypted = cipher.decrypt(encrypted_bytes)
|
||||
|
||||
pad_len = decrypted[-1]
|
||||
decrypted = decrypted[:-pad_len]
|
||||
|
||||
if decrypted.startswith(b'\xff\xd8'): # JPEG
|
||||
mime_type = 'image/jpeg'
|
||||
elif decrypted.startswith(b'\x89PNG'): # PNG
|
||||
mime_type = 'image/png'
|
||||
elif decrypted.startswith((b'GIF87a', b'GIF89a')): # GIF
|
||||
mime_type = 'image/gif'
|
||||
elif decrypted.startswith(b'BM'): # BMP
|
||||
mime_type = 'image/bmp'
|
||||
elif decrypted.startswith(b'II*\x00') or decrypted.startswith(b'MM\x00*'): # TIFF
|
||||
mime_type = 'image/tiff'
|
||||
else:
|
||||
mime_type = 'application/octet-stream'
|
||||
|
||||
# 转 base64
|
||||
base64_str = base64.b64encode(decrypted).decode('utf-8')
|
||||
return f'data:{mime_type};base64,{base64_str}'
|
||||
return await download_encrypted_file(download_url, encoding_aes_key, self.logger)
|
||||
|
||||
async def run_task(self, host: str, port: int, *args, **kwargs):
|
||||
"""
|
||||
|
||||
596
src/langbot/libs/wecom_ai_bot_api/ws_client.py
Normal file
596
src/langbot/libs/wecom_ai_bot_api/ws_client.py
Normal file
@@ -0,0 +1,596 @@
|
||||
"""WeChat Work AI Bot WebSocket long connection client.
|
||||
|
||||
Implements the WebSocket protocol for receiving messages and sending replies
|
||||
via a persistent connection to wss://openws.work.weixin.qq.com, as an
|
||||
alternative to the HTTP callback (webhook) mode.
|
||||
|
||||
Protocol reference: https://developer.work.weixin.qq.com/document/path/101463
|
||||
Official Node.js SDK: https://github.com/WecomTeam/aibot-node-sdk
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import asyncio
|
||||
import json
|
||||
import secrets
|
||||
import time
|
||||
import traceback
|
||||
from typing import Any, Callable, Optional
|
||||
|
||||
import aiohttp
|
||||
|
||||
from langbot.libs.wecom_ai_bot_api import wecombotevent
|
||||
from langbot.libs.wecom_ai_bot_api.api import parse_wecom_bot_message
|
||||
from langbot.pkg.platform.logger import EventLogger
|
||||
|
||||
DEFAULT_WS_URL = 'wss://openws.work.weixin.qq.com'
|
||||
|
||||
# WebSocket frame command constants
|
||||
CMD_SUBSCRIBE = 'aibot_subscribe'
|
||||
CMD_HEARTBEAT = 'ping'
|
||||
CMD_MSG_CALLBACK = 'aibot_msg_callback'
|
||||
CMD_EVENT_CALLBACK = 'aibot_event_callback'
|
||||
CMD_RESPOND_MSG = 'aibot_respond_msg'
|
||||
CMD_RESPOND_WELCOME = 'aibot_respond_welcome_msg'
|
||||
CMD_RESPOND_UPDATE = 'aibot_respond_update_msg'
|
||||
CMD_SEND_MSG = 'aibot_send_msg'
|
||||
|
||||
|
||||
def _generate_req_id(prefix: str) -> str:
|
||||
"""Generate a unique request ID in the format: {prefix}_{timestamp}_{random}."""
|
||||
ts = int(time.time() * 1000)
|
||||
rand = secrets.token_hex(4)
|
||||
return f'{prefix}_{ts}_{rand}'
|
||||
|
||||
|
||||
class WecomBotWsClient:
|
||||
"""WeChat Work AI Bot WebSocket long connection client.
|
||||
|
||||
Provides message receiving, streaming reply, proactive message sending,
|
||||
and event callback handling over a persistent WebSocket connection.
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
bot_id: str,
|
||||
secret: str,
|
||||
logger: EventLogger,
|
||||
encoding_aes_key: str = '',
|
||||
ws_url: str = DEFAULT_WS_URL,
|
||||
heartbeat_interval: float = 30.0,
|
||||
max_reconnect_attempts: int = -1,
|
||||
reconnect_base_delay: float = 1.0,
|
||||
reconnect_max_delay: float = 30.0,
|
||||
):
|
||||
self.bot_id = bot_id
|
||||
self.secret = secret
|
||||
self.logger = logger
|
||||
self.encoding_aes_key = encoding_aes_key
|
||||
self.ws_url = ws_url
|
||||
self.heartbeat_interval = heartbeat_interval
|
||||
self.max_reconnect_attempts = max_reconnect_attempts
|
||||
self.reconnect_base_delay = reconnect_base_delay
|
||||
self.reconnect_max_delay = reconnect_max_delay
|
||||
|
||||
self._ws: Optional[aiohttp.ClientWebSocketResponse] = None
|
||||
self._session: Optional[aiohttp.ClientSession] = None
|
||||
self._running = False
|
||||
self._heartbeat_task: Optional[asyncio.Task] = None
|
||||
self._missed_pong_count = 0
|
||||
self._max_missed_pong = 2
|
||||
self._reconnect_attempts = 0
|
||||
|
||||
# Message handler registry (same pattern as WecomBotClient)
|
||||
self._message_handlers: dict[str, list[Callable]] = {}
|
||||
# Message deduplication
|
||||
self._msg_id_map: dict[str, int] = {}
|
||||
|
||||
# Pending ACK futures: req_id -> Future[dict]
|
||||
self._pending_acks: dict[str, asyncio.Future] = {}
|
||||
# Per-req_id serial reply queues
|
||||
self._reply_queues: dict[str, asyncio.Queue] = {}
|
||||
self._reply_workers: dict[str, asyncio.Task] = {}
|
||||
self._reply_ack_timeout = 5.0
|
||||
|
||||
# Stream ID tracking for WebSocket mode
|
||||
self._stream_ids: dict[str, str] = {} # msg_id -> req_id|stream_id
|
||||
# Dedup: skip sending when content hasn't changed
|
||||
self._stream_last_content: dict[str, str] = {} # msg_id -> last content sent
|
||||
|
||||
# ── Public API ──────────────────────────────────────────────────
|
||||
|
||||
async def connect(self):
|
||||
"""Connect to WebSocket server with automatic reconnection.
|
||||
|
||||
This method blocks until disconnect() is called or max reconnect
|
||||
attempts are exhausted.
|
||||
"""
|
||||
self._running = True
|
||||
self._reconnect_attempts = 0
|
||||
|
||||
while self._running:
|
||||
try:
|
||||
await self._connect_once()
|
||||
except Exception:
|
||||
if not self._running:
|
||||
break
|
||||
await self.logger.error(f'WebSocket connection error: {traceback.format_exc()}')
|
||||
|
||||
if not self._running:
|
||||
break
|
||||
|
||||
# Reconnect with exponential backoff
|
||||
if self.max_reconnect_attempts != -1 and self._reconnect_attempts >= self.max_reconnect_attempts:
|
||||
await self.logger.error(f'Max reconnect attempts reached ({self.max_reconnect_attempts}), giving up')
|
||||
break
|
||||
|
||||
self._reconnect_attempts += 1
|
||||
delay = min(
|
||||
self.reconnect_base_delay * (2 ** (self._reconnect_attempts - 1)),
|
||||
self.reconnect_max_delay,
|
||||
)
|
||||
await self.logger.info(f'Reconnecting in {delay:.1f}s (attempt {self._reconnect_attempts})...')
|
||||
await asyncio.sleep(delay)
|
||||
|
||||
async def disconnect(self):
|
||||
"""Gracefully disconnect from the WebSocket server."""
|
||||
self._running = False
|
||||
if self._heartbeat_task and not self._heartbeat_task.done():
|
||||
self._heartbeat_task.cancel()
|
||||
for task in self._reply_workers.values():
|
||||
if not task.done():
|
||||
task.cancel()
|
||||
if self._ws and not self._ws.closed:
|
||||
await self._ws.close()
|
||||
self._ws = None
|
||||
if self._session and not self._session.closed:
|
||||
await self._session.close()
|
||||
self._session = None
|
||||
|
||||
def on_message(self, msg_type: str) -> Callable:
|
||||
"""Decorator to register a message handler.
|
||||
|
||||
Same interface as WecomBotClient.on_message for compatibility.
|
||||
|
||||
Args:
|
||||
msg_type: 'single', 'group', or specific message type.
|
||||
"""
|
||||
|
||||
def decorator(func: Callable[[wecombotevent.WecomBotEvent], Any]):
|
||||
if msg_type not in self._message_handlers:
|
||||
self._message_handlers[msg_type] = []
|
||||
self._message_handlers[msg_type].append(func)
|
||||
return func
|
||||
|
||||
return decorator
|
||||
|
||||
async def reply_stream(
|
||||
self,
|
||||
req_id: str,
|
||||
stream_id: str,
|
||||
content: str,
|
||||
finish: bool = False,
|
||||
) -> Optional[dict]:
|
||||
"""Send a streaming reply frame.
|
||||
|
||||
Args:
|
||||
req_id: The req_id from the original message frame (must be passed through).
|
||||
stream_id: The stream ID for this streaming session.
|
||||
content: The content to send (supports Markdown).
|
||||
finish: Whether this is the final chunk.
|
||||
|
||||
Returns:
|
||||
The ACK frame dict, or None on failure.
|
||||
"""
|
||||
body = {
|
||||
'msgtype': 'stream',
|
||||
'stream': {
|
||||
'id': stream_id,
|
||||
'finish': finish,
|
||||
'content': content,
|
||||
},
|
||||
}
|
||||
return await self._send_reply(req_id, body)
|
||||
|
||||
async def reply_text(self, req_id: str, content: str) -> Optional[dict]:
|
||||
"""Send a non-streaming text reply.
|
||||
|
||||
Args:
|
||||
req_id: The req_id from the original message frame.
|
||||
content: The text content to reply.
|
||||
|
||||
Returns:
|
||||
The ACK frame dict, or None on failure.
|
||||
"""
|
||||
body = {
|
||||
'msgtype': 'markdown',
|
||||
'markdown': {
|
||||
'content': content,
|
||||
},
|
||||
}
|
||||
return await self._send_reply(req_id, body)
|
||||
|
||||
async def send_message(self, chat_id: str, content: str, msgtype: str = 'markdown') -> Optional[dict]:
|
||||
"""Proactively send a message to a specified chat.
|
||||
|
||||
Args:
|
||||
chat_id: The chat ID (userid for single chat, chatid for group chat).
|
||||
content: The message content.
|
||||
msgtype: Message type, 'markdown' by default.
|
||||
|
||||
Returns:
|
||||
The ACK frame dict, or None on failure.
|
||||
"""
|
||||
req_id = _generate_req_id(CMD_SEND_MSG)
|
||||
body: dict[str, Any] = {
|
||||
'chatid': chat_id,
|
||||
'msgtype': msgtype,
|
||||
}
|
||||
if msgtype == 'markdown':
|
||||
body['markdown'] = {'content': content}
|
||||
elif msgtype == 'text':
|
||||
body['text'] = {'content': content}
|
||||
return await self._send_reply(req_id, body, cmd=CMD_SEND_MSG)
|
||||
|
||||
async def push_stream_chunk(self, msg_id: str, content: str, is_final: bool = False) -> bool:
|
||||
"""Push a streaming chunk for a given message ID.
|
||||
|
||||
Compatible interface with WecomBotClient.push_stream_chunk.
|
||||
|
||||
Args:
|
||||
msg_id: The original message ID.
|
||||
content: The cumulative content from the pipeline.
|
||||
is_final: Whether this is the final chunk.
|
||||
|
||||
Returns:
|
||||
True if the stream session exists and chunk was sent.
|
||||
"""
|
||||
key = self._stream_ids.get(msg_id)
|
||||
if not key:
|
||||
return False
|
||||
req_id, stream_id = key.split('|', 1)
|
||||
try:
|
||||
# Skip sending if content hasn't changed (e.g. during tool call argument streaming)
|
||||
if not is_final and content == self._stream_last_content.get(msg_id):
|
||||
return True
|
||||
await self.reply_stream(req_id, stream_id, content, finish=is_final)
|
||||
self._stream_last_content[msg_id] = content
|
||||
if is_final:
|
||||
self._stream_ids.pop(msg_id, None)
|
||||
self._stream_last_content.pop(msg_id, None)
|
||||
return True
|
||||
except Exception:
|
||||
await self.logger.error(f'Failed to push stream chunk: {traceback.format_exc()}')
|
||||
return False
|
||||
|
||||
async def set_message(self, msg_id: str, content: str):
|
||||
"""Fallback: send content as a final stream chunk or direct reply.
|
||||
|
||||
Compatible interface with WecomBotClient.set_message.
|
||||
"""
|
||||
handled = await self.push_stream_chunk(msg_id, content, is_final=True)
|
||||
if not handled:
|
||||
await self.logger.warning(f'No active stream for msg_id={msg_id}, message dropped')
|
||||
|
||||
# ── Connection lifecycle ────────────────────────────────────────
|
||||
|
||||
async def _connect_once(self):
|
||||
"""Establish a single WebSocket connection, authenticate, and listen."""
|
||||
await self.logger.info(f'Connecting to {self.ws_url}...')
|
||||
|
||||
self._session = aiohttp.ClientSession()
|
||||
try:
|
||||
self._ws = await self._session.ws_connect(self.ws_url)
|
||||
self._missed_pong_count = 0
|
||||
self._reconnect_attempts = 0
|
||||
await self.logger.info('WebSocket connected, sending auth...')
|
||||
|
||||
await self._send_auth()
|
||||
|
||||
# Wait for auth response
|
||||
auth_ok = await self._wait_for_auth()
|
||||
if not auth_ok:
|
||||
await self.logger.error('Authentication failed')
|
||||
return
|
||||
|
||||
await self.logger.info('Authenticated successfully')
|
||||
|
||||
# Start heartbeat
|
||||
self._heartbeat_task = asyncio.create_task(self._heartbeat_loop())
|
||||
|
||||
try:
|
||||
await self._listen_loop()
|
||||
finally:
|
||||
if self._heartbeat_task and not self._heartbeat_task.done():
|
||||
self._heartbeat_task.cancel()
|
||||
self._clear_pending_acks('Connection closed')
|
||||
finally:
|
||||
if self._ws and not self._ws.closed:
|
||||
await self._ws.close()
|
||||
self._ws = None
|
||||
if self._session and not self._session.closed:
|
||||
await self._session.close()
|
||||
self._session = None
|
||||
|
||||
async def _send_auth(self):
|
||||
"""Send the authentication frame."""
|
||||
frame = {
|
||||
'cmd': CMD_SUBSCRIBE,
|
||||
'headers': {'req_id': _generate_req_id(CMD_SUBSCRIBE)},
|
||||
'body': {
|
||||
'bot_id': self.bot_id,
|
||||
'secret': self.secret,
|
||||
},
|
||||
}
|
||||
await self._send_frame(frame)
|
||||
|
||||
async def _wait_for_auth(self) -> bool:
|
||||
"""Wait for and validate the authentication response."""
|
||||
try:
|
||||
msg = await asyncio.wait_for(self._ws.receive(), timeout=10.0)
|
||||
if msg.type in (aiohttp.WSMsgType.TEXT,):
|
||||
frame = json.loads(msg.data)
|
||||
req_id = frame.get('headers', {}).get('req_id', '')
|
||||
if req_id.startswith(CMD_SUBSCRIBE) and frame.get('errcode') == 0:
|
||||
return True
|
||||
await self.logger.error(f'Auth response: errcode={frame.get("errcode")}, errmsg={frame.get("errmsg")}')
|
||||
return False
|
||||
elif msg.type in (aiohttp.WSMsgType.ERROR, aiohttp.WSMsgType.CLOSED, aiohttp.WSMsgType.CLOSING):
|
||||
await self.logger.error(f'WebSocket closed during auth: {msg.type}')
|
||||
return False
|
||||
await self.logger.error(f'Unexpected message type during auth: {msg.type}')
|
||||
return False
|
||||
except asyncio.TimeoutError:
|
||||
await self.logger.error('Auth response timeout')
|
||||
return False
|
||||
|
||||
async def _heartbeat_loop(self):
|
||||
"""Periodically send heartbeat pings."""
|
||||
try:
|
||||
while self._running and self._ws and not self._ws.closed:
|
||||
await asyncio.sleep(self.heartbeat_interval)
|
||||
if not self._running or not self._ws or self._ws.closed:
|
||||
break
|
||||
|
||||
if self._missed_pong_count >= self._max_missed_pong:
|
||||
await self.logger.warning(
|
||||
f'No heartbeat ack for {self._missed_pong_count} consecutive pings, connection considered dead'
|
||||
)
|
||||
await self._ws.close()
|
||||
break
|
||||
|
||||
self._missed_pong_count += 1
|
||||
frame = {
|
||||
'cmd': CMD_HEARTBEAT,
|
||||
'headers': {'req_id': _generate_req_id(CMD_HEARTBEAT)},
|
||||
}
|
||||
try:
|
||||
await self._send_frame(frame)
|
||||
except Exception:
|
||||
break
|
||||
except asyncio.CancelledError:
|
||||
pass
|
||||
|
||||
async def _listen_loop(self):
|
||||
"""Listen for incoming WebSocket frames and dispatch them."""
|
||||
async for msg in self._ws:
|
||||
if not self._running:
|
||||
break
|
||||
if msg.type == aiohttp.WSMsgType.TEXT:
|
||||
try:
|
||||
frame = json.loads(msg.data)
|
||||
await self._handle_frame(frame)
|
||||
except json.JSONDecodeError:
|
||||
await self.logger.error(f'Failed to parse WebSocket message: {str(msg.data)[:200]}')
|
||||
except Exception:
|
||||
await self.logger.error(f'Error handling frame: {traceback.format_exc()}')
|
||||
elif msg.type == aiohttp.WSMsgType.BINARY:
|
||||
try:
|
||||
frame = json.loads(msg.data)
|
||||
await self._handle_frame(frame)
|
||||
except Exception:
|
||||
await self.logger.error(f'Error handling binary frame: {traceback.format_exc()}')
|
||||
elif msg.type in (aiohttp.WSMsgType.ERROR, aiohttp.WSMsgType.CLOSED, aiohttp.WSMsgType.CLOSING):
|
||||
await self.logger.warning(f'WebSocket connection closed: {msg.type}')
|
||||
break
|
||||
|
||||
# ── Frame handling ──────────────────────────────────────────────
|
||||
|
||||
async def _handle_frame(self, frame: dict):
|
||||
"""Route an incoming frame to the appropriate handler."""
|
||||
cmd = frame.get('cmd', '')
|
||||
|
||||
# Message push
|
||||
if cmd == CMD_MSG_CALLBACK:
|
||||
asyncio.create_task(self._handle_message_callback(frame))
|
||||
return
|
||||
|
||||
# Event push
|
||||
if cmd == CMD_EVENT_CALLBACK:
|
||||
asyncio.create_task(self._handle_event_callback(frame))
|
||||
return
|
||||
|
||||
# No cmd → response/ACK frame, dispatch by req_id prefix
|
||||
req_id = frame.get('headers', {}).get('req_id', '')
|
||||
|
||||
# Check pending ACKs first
|
||||
if req_id in self._pending_acks:
|
||||
future = self._pending_acks.pop(req_id)
|
||||
if not future.done():
|
||||
future.set_result(frame)
|
||||
return
|
||||
|
||||
# Heartbeat response
|
||||
if req_id.startswith(CMD_HEARTBEAT):
|
||||
if frame.get('errcode') == 0:
|
||||
self._missed_pong_count = 0
|
||||
return
|
||||
|
||||
# Unknown frame
|
||||
await self.logger.warning(f'Unknown frame: {json.dumps(frame, ensure_ascii=False)[:200]}')
|
||||
|
||||
async def _handle_message_callback(self, frame: dict):
|
||||
"""Handle an incoming message callback frame."""
|
||||
try:
|
||||
body = frame.get('body', {})
|
||||
req_id = frame.get('headers', {}).get('req_id', '')
|
||||
|
||||
# Parse message using shared logic
|
||||
message_data = await parse_wecom_bot_message(body, self.encoding_aes_key, self.logger)
|
||||
if not message_data:
|
||||
return
|
||||
|
||||
# Generate stream_id for this message and store the mapping
|
||||
stream_id = _generate_req_id('stream')
|
||||
msg_id = message_data.get('msgid', '')
|
||||
if msg_id:
|
||||
self._stream_ids[msg_id] = f'{req_id}|{stream_id}'
|
||||
message_data['stream_id'] = stream_id
|
||||
message_data['req_id'] = req_id
|
||||
|
||||
event = wecombotevent.WecomBotEvent(message_data)
|
||||
await self._dispatch_event(event)
|
||||
except Exception:
|
||||
await self.logger.error(f'Error in message callback: {traceback.format_exc()}')
|
||||
|
||||
async def _handle_event_callback(self, frame: dict):
|
||||
"""Handle an incoming event callback frame (enter_chat, template_card_event, etc.)."""
|
||||
try:
|
||||
body = frame.get('body', {})
|
||||
req_id = frame.get('headers', {}).get('req_id', '')
|
||||
|
||||
event_info = body.get('event', {})
|
||||
event_type = event_info.get('eventtype', '')
|
||||
|
||||
message_data = {
|
||||
'msgtype': 'event',
|
||||
'type': body.get('chattype', 'single'),
|
||||
'event': event_info,
|
||||
'eventtype': event_type,
|
||||
'msgid': body.get('msgid', ''),
|
||||
'aibotid': body.get('aibotid', ''),
|
||||
'req_id': req_id,
|
||||
}
|
||||
|
||||
from_info = body.get('from', {})
|
||||
message_data['userid'] = from_info.get('userid', '')
|
||||
message_data['username'] = from_info.get('alias', '') or from_info.get('userid', '')
|
||||
|
||||
if body.get('chatid'):
|
||||
message_data['chatid'] = body.get('chatid', '')
|
||||
|
||||
event = wecombotevent.WecomBotEvent(message_data)
|
||||
|
||||
# Dispatch to event-specific handlers
|
||||
if event_type in self._message_handlers:
|
||||
for handler in self._message_handlers[event_type]:
|
||||
await handler(event)
|
||||
|
||||
# Also dispatch to generic 'event' handlers
|
||||
if 'event' in self._message_handlers:
|
||||
for handler in self._message_handlers['event']:
|
||||
await handler(event)
|
||||
|
||||
except Exception:
|
||||
await self.logger.error(f'Error in event callback: {traceback.format_exc()}')
|
||||
|
||||
async def _dispatch_event(self, event: wecombotevent.WecomBotEvent):
|
||||
"""Dispatch a message event to registered handlers with deduplication."""
|
||||
try:
|
||||
message_id = event.message_id
|
||||
if message_id in self._msg_id_map:
|
||||
self._msg_id_map[message_id] += 1
|
||||
return
|
||||
self._msg_id_map[message_id] = 1
|
||||
|
||||
msg_type = event.type
|
||||
if msg_type in self._message_handlers:
|
||||
for handler in self._message_handlers[msg_type]:
|
||||
await handler(event)
|
||||
except Exception:
|
||||
await self.logger.error(f'Error dispatching event: {traceback.format_exc()}')
|
||||
|
||||
# ── Reply sending with serial queue ─────────────────────────────
|
||||
|
||||
async def _send_reply(
|
||||
self,
|
||||
req_id: str,
|
||||
body: dict,
|
||||
cmd: str = CMD_RESPOND_MSG,
|
||||
) -> Optional[dict]:
|
||||
"""Send a reply frame and wait for ACK.
|
||||
|
||||
Replies with the same req_id are serialized to maintain ordering.
|
||||
"""
|
||||
if not self._ws or self._ws.closed:
|
||||
return None
|
||||
|
||||
frame = {
|
||||
'cmd': cmd,
|
||||
'headers': {'req_id': req_id},
|
||||
'body': body,
|
||||
}
|
||||
|
||||
# Ensure serial delivery per req_id
|
||||
if req_id not in self._reply_queues:
|
||||
self._reply_queues[req_id] = asyncio.Queue()
|
||||
self._reply_workers[req_id] = asyncio.create_task(self._reply_queue_worker(req_id))
|
||||
|
||||
future: asyncio.Future = asyncio.get_event_loop().create_future()
|
||||
await self._reply_queues[req_id].put((frame, future))
|
||||
return await future
|
||||
|
||||
async def _reply_queue_worker(self, req_id: str):
|
||||
"""Process reply queue items serially for a given req_id."""
|
||||
queue = self._reply_queues[req_id]
|
||||
try:
|
||||
while self._running:
|
||||
try:
|
||||
frame, future = await asyncio.wait_for(queue.get(), timeout=60.0)
|
||||
except asyncio.TimeoutError:
|
||||
# Queue idle, clean up worker
|
||||
break
|
||||
|
||||
try:
|
||||
ack = await self._send_and_wait_ack(frame)
|
||||
if not future.done():
|
||||
future.set_result(ack)
|
||||
except Exception as e:
|
||||
if not future.done():
|
||||
future.set_exception(e)
|
||||
except asyncio.CancelledError:
|
||||
pass
|
||||
finally:
|
||||
self._reply_queues.pop(req_id, None)
|
||||
self._reply_workers.pop(req_id, None)
|
||||
|
||||
async def _send_and_wait_ack(self, frame: dict) -> Optional[dict]:
|
||||
"""Send a frame and wait for the corresponding ACK."""
|
||||
req_id = frame['headers']['req_id']
|
||||
ack_future: asyncio.Future = asyncio.get_event_loop().create_future()
|
||||
self._pending_acks[req_id] = ack_future
|
||||
|
||||
try:
|
||||
await self._send_frame(frame)
|
||||
result = await asyncio.wait_for(ack_future, timeout=self._reply_ack_timeout)
|
||||
if result.get('errcode', 0) != 0:
|
||||
await self.logger.warning(
|
||||
f'Reply ACK error: errcode={result.get("errcode")}, errmsg={result.get("errmsg")}'
|
||||
)
|
||||
return result
|
||||
except asyncio.TimeoutError:
|
||||
self._pending_acks.pop(req_id, None)
|
||||
await self.logger.warning(f'Reply ACK timeout ({self._reply_ack_timeout}s) for req_id={req_id}')
|
||||
return None
|
||||
|
||||
async def _send_frame(self, frame: dict):
|
||||
"""Send a JSON frame over the WebSocket connection."""
|
||||
if self._ws and not self._ws.closed:
|
||||
await self._ws.send_str(json.dumps(frame, ensure_ascii=False))
|
||||
|
||||
def _clear_pending_acks(self, reason: str):
|
||||
"""Reject all pending ACK futures on disconnection."""
|
||||
for req_id, future in self._pending_acks.items():
|
||||
if not future.done():
|
||||
future.set_exception(ConnectionError(reason))
|
||||
self._pending_acks.clear()
|
||||
Reference in New Issue
Block a user