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|
- import tiktoken
- import openai
- from datetime import datetime
- from typing import Any
- from time import sleep
- from memory_manager import MemoryManager
- class OpenAIAssistant():
- """
- ChatGPT wrapper for OpenAI API
- """
- def __init__(
- self,
- api_key: str,
- chat_model: str = 'gpt-3.5-turbo',
- embedding_model: Any = 'text-embedding-ada-002',
- enc: str = 'gpt2',
- short_term_memory_summary_prompt: str = None,
- long_term_memory_summary_prompt: str = None,
- system_prompt: str = "You are a helpful assistant. Your name is SERPy.",
- short_term_memory_max_tokens: int = 750,
- long_term_memory_max_tokens: int = 500,
- knowledge_retrieval_max_tokens: int = 1000,
- short_term_memory_summary_max_tokens: int = 300,
- long_term_memory_summary_max_tokens: int = 300,
- knowledge_retrieval_summary_max_tokens: int = 600,
- summarize_short_term_memory: bool = False,
- summarize_long_term_memory: bool = False,
- summarize_knowledge_retrieval: bool = False,
- use_long_term_memory: bool = False,
- long_term_memory_collection_name: str = 'long_term_memory',
- use_short_term_memory: bool = False,
- use_knowledge_retrieval: bool = False,
- knowledge_retrieval_collection_name: str = 'knowledge_retrieval',
- price_per_token: float = 0.000002,
- max_seq_len: int = 4096,
- memory_manager: MemoryManager = None,
- debug: bool = False
- ) -> None:
- """
- Initialize the OpenAIAssistant
- Parameters:
- api_key (str): The OpenAI API key
- chat_model (str): The model to use for chat
- embedding_model (Any): The model to use for embeddings
- enc (str): The encoding to use for the model
- short_term_memory_summary_prompt (str): The prompt to use for short term memory summarization
- long_term_memory_summary_prompt (str): The prompt to use for long term memory summarization
- system_prompt (str): The system prompt to use for the model
- short_term_memory_max_tokens (int): The maximum number of tokens to store in short term memory
- long_term_memory_max_tokens (int): The maximum number of tokens to store in long term memory
- knowledge_retrieval_max_tokens (int): The maximum number of tokens to store in knowledge retrieval
- short_term_memory_summary_max_tokens (int): The maximum number of tokens to store in short term memory summary
- long_term_memory_summary_max_tokens (int): The maximum number of tokens to store in long term memory summary
- knowledge_retrieval_summary_max_tokens (int): The maximum number of tokens to store in knowledge retrieval summary
- summarize_short_term_memory (bool): Whether to use short term memory summarization
- summarize_long_term_memory (bool): Whether to use long term memory summarization
- summarize_knowledge_retrieval (bool): Whether to use knowledge retrieval summarization
- use_long_term_memory (bool): Whether to use long term memory
- long_term_memory_collection_name (str): The name of the long term memory collection
- use_short_term_memory (bool): Whether to use short term memory
- use_knowledge_retrieval (bool): Whether to use knowledge retrieval
- knowledge_retrieval_collection_name (str): The name of the knowledge retrieval collection
- price_per_token (float): The price per token in USD
- max_seq_len (int): The maximum sequence length
- memory_manager (MemoryManager): The memory manager to use for long term memory and knowledge retrieval
- debug (bool): Whether to enable debug mode
- """
- openai.api_key = api_key
- self.api_key = api_key
- self.chat_model = chat_model
- self.embedding_model = embedding_model
- self.enc = tiktoken.get_encoding(enc)
- self.memory_manager = memory_manager
- self.price_per_token = price_per_token
- self.short_term_memory = []
- self.short_term_memory_summary = ''
- self.long_term_memory_summary = ''
- self.knowledge_retrieval_summary = ''
- self.debug = debug
- self.summarize_short_term_memory = summarize_short_term_memory
- self.summarize_long_term_memory = summarize_long_term_memory
- self.summarize_knowledge_retrieval = summarize_knowledge_retrieval
- self.use_long_term_memory = use_long_term_memory
- self.long_term_memory_collection_name = 'long_term_memory' if long_term_memory_collection_name is None else long_term_memory_collection_name
- self.use_knowledge_retrieval = use_knowledge_retrieval
- self.knowledge_retrieval_collection_name = 'knowledge_retrieval' if knowledge_retrieval_collection_name is None else knowledge_retrieval_collection_name
- if self.memory_manager is None:
- self.use_long_term_memory = False
- self.use_knowledge_retrieval = False
- if self.use_long_term_memory and self.memory_manager is not None:
- self.memory_manager.create_collection(self.long_term_memory_collection_name)
- if self.use_knowledge_retrieval and self.memory_manager is not None:
- self.memory_manager.create_collection(self.knowledge_retrieval_collection_name)
- self.use_short_term_memory = use_short_term_memory
- self.short_term_memory_summary_max_tokens = short_term_memory_summary_max_tokens
- self.long_term_memory_summary_max_tokens = long_term_memory_summary_max_tokens
- self.knowledge_retrieval_summary_max_tokens = knowledge_retrieval_summary_max_tokens
- self.short_term_memory_max_tokens = short_term_memory_max_tokens
- self.long_term_memory_max_tokens = long_term_memory_max_tokens
- self.knowledge_retrieval_max_tokens = knowledge_retrieval_max_tokens
- self.system_prompt = system_prompt
- if short_term_memory_summary_prompt is None:
- self.short_term_memory_summary_prompt = "Summarize the following conversation:\n\nPrevious Summary: {previous_summary}\n\nConversation: {conversation}"
- else:
- self.short_term_memory_summary_prompt = short_term_memory_summary_prompt
- if long_term_memory_summary_prompt is None:
- self.long_term_memory_summary_prompt = "Summarize the following (out of order) conversation messages:\n\nPrevious Summary: {previous_summary}\n\nMessages: {conversation}"
- self.max_seq_len = max_seq_len
- def _construct_messages(self, prompt: str, inject_messages: list = []) -> list:
- """
- Construct the messages for the chat completion
- Parameters:
- prompt (str): The prompt to construct the messages for
- inject_messages (list): The messages to inject into the chat completion
- Returns:
- list: The messages to use for the chat completion
- """
- messages = []
- if self.system_prompt is not None and self.system_prompt != "":
- messages.append({
- "role": "system",
- "content": self.system_prompt
- })
- if self.use_long_term_memory:
- long_term_memory = self.query_long_term_memory(prompt, summarize=self.summarize_long_term_memory)
- if long_term_memory is not None and long_term_memory != '':
- messages.append({
- "role": "system",
- "content": long_term_memory
- })
- if self.summarize_short_term_memory:
- if self.short_term_memory_summary != '' and self.short_term_memory_summary is not None:
- messages.append({
- "role": "system",
- "content": self.short_term_memory_summary
- })
- if self.use_short_term_memory:
- for i, message in enumerate(self.short_term_memory):
- messages.append(message)
- if inject_messages is not None and inject_messages != []:
- for i in range(len(messages)):
- for y, message in enumerate(inject_messages):
- if i == list(message.keys())[0]:
- messages.insert(i, list(message.values())[0])
- inject_messages.pop(y)
- for message in inject_messages:
- messages.append(list(message.values())[0])
- if prompt is None or prompt == "":
- return messages
-
- messages.append({
- "role": "user",
- "content": prompt
- })
-
- return messages
- def change_system_prompt(self, system_prompt: str) -> None:
- """
- Change the system prompt
- Parameters:
- system_prompt (str): The new system prompt to use
- """
- self.system_prompt = system_prompt
- def calculate_num_tokens(self, text: str) -> int:
- """
- Calculate the number of tokens in a given text
- Parameters:
- text (str): The text to calculate the number of tokens for
- Returns:
- int: The number of tokens in the text
- """
- return len(self.enc.encode(text))
- def calculate_short_term_memory_tokens(self) -> int:
- """
- Calculate the number of tokens in short term memory
- Returns:
- int: The number of tokens in short term memory
- """
- return sum([self.calculate_num_tokens(message['content']) for message in self.short_term_memory])
-
- def query_long_term_memory(self, query: str, summarize=False) -> str:
- """
- Query long term memory
- Parameters:
- query (str): The query to use for long term memory
- summarize (bool): Whether to summarize the long term memory
- Returns:
- str: The long term memory
- """
- embedding = self.get_embedding(query).data[0].embedding
- points = self.memory_manager.search_points(vector=embedding, collection_name=self.long_term_memory_collection_name, k=20)
- if len(points) == 0:
- return ''
- long_term_memory = ''
- if summarize:
- long_term_memory += 'Summary of previous related conversations from long term memory:' + self.generate_long_term_memory_summary(points) + '\n\n'
- if self.long_term_memory_max_tokens > 0:
- long_term_memory += 'Previous related conversations from long term memory:\n\n'
- for point in points:
- point = point.payload
- if self.calculate_num_tokens(long_term_memory + f"{point['user_message']['role'].title()}: {point['user_message']['content']}\n\n{point['assistant_message']['role'].title()}: {point['assistant_message']['content']}\n----------\n") > self.long_term_memory_max_tokens:
- continue
- long_term_memory += f"{point['user_message']['role'].title()}: {point['user_message']['content']}\n\n{point['assistant_message']['role'].title()}: {point['assistant_message']['content']}\n----------\n"
- if long_term_memory == 'Previous related conversations from long term memory:\n\n':
- return ''
- elif long_term_memory.endswith('\n\nPrevious related conversations from long term memory:\n\n'):
- long_term_memory = long_term_memory.replace('\n\nPrevious related conversations from long term memory:\n\n', '')
- return long_term_memory.strip()
- def add_message_to_short_term_memory(self, user_message: dict, assistant_message: dict) -> None:
- """
- Add a message to short term memory
- Parameters:
- user_message (dict): The user message to add to short term memory
- assistant_message (dict): The assistant message to add to short term memory
- """
- self.short_term_memory.append(user_message)
- self.short_term_memory.append(assistant_message)
- while self.calculate_short_term_memory_tokens() > self.short_term_memory_max_tokens:
- if self.summarize_short_term_memory:
- self.generate_short_term_memory_summary()
- self.short_term_memory.pop(0) # Remove the oldest message (User message)
- self.short_term_memory.pop(0) # Remove the oldest message (OpenAIAssistant message)
- def add_message_to_long_term_memory(self, user_message: dict, assistant_message: dict) -> None:
- """
- Add a message to long term memory
- Parameters:
- user_message (dict): The user message to add to long term memory
- assistant_message (dict): The assistant message to add to long term memory
- """
- points = [
- {
- "vector": self.get_embedding(f'User: {user_message["content"]}\n\nAssistant: {assistant_message["content"]}').data[0].embedding,
- "payload": {
- "user_message": user_message,
- "assistant_message": assistant_message,
- "timestamp": datetime.now().timestamp()
- }
- }
- ]
- self.memory_manager.insert_points(collection_name=self.long_term_memory_collection_name, points=points)
- def generate_short_term_memory_summary(self) -> None:
- """
- Generate a summary of short term memory
- """
- prompt = self.short_term_memory_summary_prompt.format(
- previous_summary=self.short_term_memory_summary,
- conversation=f'User: {self.short_term_memory[0]["content"]}\n\nAssistant: {self.short_term_memory[1]["content"]}'
- )
- if self.calculate_num_tokens(prompt) > self.max_seq_len - self.short_term_memory_summary_max_tokens:
- prompt = self.enc.decode(self.enc.encode(prompt)[:self.max_seq_len - self.short_term_memory_summary_max_tokens])
- summary_agent = OpenAIAssistant(self.api_key, system_prompt=None)
- self.short_term_memory_summary = summary_agent.get_chat_response(prompt, max_tokens=self.short_term_memory_summary_max_tokens).choices[0].message.content
- def generate_long_term_memory_summary(self, points: list) -> str:
- """
- Summarize long term memory
- Parameters:
- points (list): The points to summarize
- Returns:
- str: The summary of long term memory
- """
- prompt = self.long_term_memory_summary_prompt.format(
- previous_summary=self.long_term_memory_summary,
- conversation='\n\n'.join([f'User: {point.payload["user_message"]["content"]}\n\nAssistant: {point.payload["assistant_message"]["content"]}' for point in points])
- )
- if self.calculate_num_tokens(prompt) > self.max_seq_len - self.long_term_memory_summary_max_tokens:
- prompt = self.enc.decode(self.enc.encode(prompt)[:self.max_seq_len - self.long_term_memory_summary_max_tokens])
- summary_agent = OpenAIAssistant(self.api_key, system_prompt=None)
- self.long_term_memory_summary = summary_agent.get_chat_response(prompt, max_tokens=self.long_term_memory_summary_max_tokens).choices[0].message.content
- return self.long_term_memory_summary
- def calculate_price(self, prompt: str = None, num_tokens: int = None) -> float:
- """
- Calculate the price of a prompt (or number of tokens) in USD
- Parameters:
- prompt (str): The prompt to calculate the price of
- num_tokens (int): The number of tokens to calculate the price of
- Returns:
- float: The price of the generation in USD
- """
- assert prompt or num_tokens, "You must provide either a prompt or number of tokens"
- if prompt:
- num_tokens = self.calculate_num_tokens(prompt)
- return num_tokens * self.price_per_token
- def get_embedding(self, input: str, user: str = '', instructor_instruction: str = None) -> str:
- """
- Get the embedding for given text
- Parameters:
- input (str): The text to get the embedding for
- user (str): The user to get the embedding for
- instructor_instruction (str): The instructor instruction to get the embedding with
- Returns:
- str: The embedding for the prompt
- """
- if self.embedding_model is None:
- return None
- elif self.embedding_model == 'text-embedding-ada-002':
- return openai.Embedding.create(
- model=self.embedding_model,
- input=input,
- user=user
- )
- else:
- if instructor_instruction is not None:
- return self.embedding_model.encode([[instructor_instruction, input]])
- return self.embedding_model.encode([input])
- def get_chat_response(self, prompt: str, max_tokens: int = None, temperature: float = 1.0, top_p: float = 1.0, n: int = 1, stream: bool = False, frequency_penalty: float = 0, presence_penalty: float = 0, stop: list = None, logit_bias: dict = {}, user: str = '', max_retries: int = 3, inject_messages: list = []) -> str:
- """
- Get a chat response from the model
- Parameters:
- prompt (str): The prompt to generate a response for
- max_tokens (int): The maximum number of tokens to generate
- temperature (float): The temperature of the model
- top_p (float): The top_p of the model
- n (int): The number of responses to generate
- stream (bool): Whether to stream the response
- frequency_penalty (float): The frequency penalty of the model
- presence_penalty (float): The presence penalty of the model
- stop (list): The stop sequence of the model
- logit_bias (dict): The logit bias of the model
- user (str): The user to generate the response for
- max_retries (int): The maximum number of retries to generate a response
- inject_messages (list): The messages to inject into the prompt (key: index to insert at in short term memory (0 to prepend before all messages), value: message to inject)
- Returns:
- str: The chat response
- """
- messages = self._construct_messages(prompt, inject_messages=inject_messages)
- if self.debug:
- print(f'Messages: {messages}')
- iteration = 0
- while True:
- try:
- response = openai.ChatCompletion.create(
- model=self.chat_model,
- messages=messages,
- temperature=temperature,
- top_p=top_p,
- n=n,
- stream=stream,
- stop=stop,
- max_tokens=max_tokens,
- presence_penalty=presence_penalty,
- frequency_penalty=frequency_penalty,
- logit_bias=logit_bias,
- user=user
- )
- if self.use_short_term_memory:
- self.add_message_to_short_term_memory(user_message={
- "role": "user",
- "content": prompt
- }, assistant_message=response.choices[0].message.to_dict())
- if self.use_long_term_memory:
- self.add_message_to_long_term_memory(user_message={
- "role": "user",
- "content": prompt
- }, assistant_message=response.choices[0].message.to_dict())
- return response
- except Exception as e:
- iteration += 1
- if iteration >= max_retries:
- raise e
- print('Error communicating with chatGPT:', e)
- sleep(1)
|