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87 lines
3.2 KiB
87 lines
3.2 KiB
# Copyright 2021 Zilliz. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import requests
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import json
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from typing import List
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from towhee.operator.base import PyOperator
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class ErnieChat(PyOperator):
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'''Wrapper of OpenAI Chat API'''
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def __init__(self,
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api_key: str = None,
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secret_key: str = None,
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**kwargs
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):
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self.api_key = api_key or os.getenv('ERNIE_API_KEY')
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self.secret_key = secret_key or os.getenv('ERNIE_SECRET_KEY')
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self.kwargs = kwargs
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try:
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self.access_token = self.get_access_token(api_key=self.api_key, secret_key=self.secret_key)
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except Exception as e:
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raise RuntimeError(f'Failed to get access token: {e}')
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self.url = 'https://aip.baidubce.com/rpc/2.0/ai_custom/v1/wenxinworkshop/chat/completions?access_token=' \
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+ self.access_token
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def __call__(self, messages: List[dict]):
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messages = self.parse_inputs(messages)
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self.kwargs['messages'] = messages
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payload = json.dumps(self.kwargs)
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headers = {
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'Content-Type': 'application/json'
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}
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response = requests.request('POST', self.url, headers=headers, data=payload)
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# if self.kwargs.get('stream', False):
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# return self.stream_output(response)
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answer = response.json()['result']
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return answer
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def parse_inputs(self, messages: List[dict]):
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assert isinstance(messages, list), \
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'Inputs must be a list of dictionaries with keys from ["question", "answer"] or ["role", "content"].'
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new_messages = []
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for m in messages:
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if ('role' and 'content' in m) and (m['role'] in ['assistant', 'user']):
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new_messages.append(m)
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else:
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for k, v in m.items():
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if k == 'question':
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new_m = {'role': 'user', 'content': v}
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elif k == 'answer':
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new_m = {'role': 'assistant', 'content': v}
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else:
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'Invalid message key: only accept key value from ["question", "answer"].'
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new_messages.append(new_m)
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return new_messages
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def stream_output(self, response):
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# todo
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pass
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@staticmethod
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def get_access_token(api_key, secret_key):
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url = 'https://aip.baidubce.com/oauth/2.0/token'
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params = {
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'grant_type': 'client_credentials',
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'client_id': api_key,
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'client_secret': secret_key
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}
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return str(requests.post(url, params=params).json().get('access_token'))
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