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124 lines
4.9 KiB
124 lines
4.9 KiB
import asyncio
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import os, tempfile
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import logging
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import json
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import requests
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from transformers import AutoTokenizer, AutoConfig
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from huggingface_hub import hf_hub_download
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import io
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import base64
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from PIL import Image, PngImagePlugin
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logger = logging.getLogger(__name__)
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tokenizer = None
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async def get_full_prompt(simple_prompt: str, bot, chat_history):
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# Prompt without history
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prompt = bot.name + "'s Persona: " + bot.get_persona() + "\n"
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prompt += "Scenario: " + bot.get_scenario() + "\n\n"
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for dialogue_item in bot.get_example_dialogue():
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prompt += "<START>" + "\n"
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dialogue_item = dialogue_item.replace('{{user}}', 'You')
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dialogue_item = dialogue_item.replace('{{char}}', bot.name)
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prompt += dialogue_item + "\n\n"
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prompt += "<START>" + "\n"
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#prompt += bot.name + ": " + bot.greeting + "\n"
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#prompt += "You: " + simple_prompt + "\n"
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#prompt += bot.name + ":"
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MAX_TOKENS = 2048
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WINDOW = 800
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max_new_tokens = 200
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total_num_tokens = await num_tokens(prompt)
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input_num_tokens = await num_tokens(f"You: " + simple_prompt + "\n{bot.name}:")
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total_num_tokens += input_num_tokens
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visible_history = []
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num_message = 0
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for key, chat_item in reversed(chat_history.chat_history.items()):
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num_message += 1
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if num_message == 1:
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# skip current_message
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continue
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if chat_item.stop_here:
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break
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if chat_item.message["en"].startswith('!begin'):
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break
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if chat_item.message["en"].startswith('!'):
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continue
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if chat_item.message["en"].startswith('<ERROR>'):
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continue
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#if chat_item.message["en"] == bot.greeting:
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# continue
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if chat_item.num_tokens == None:
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chat_history.chat_history[key].num_tokens = await num_tokens("{}: {}".format(chat_item.user_name, chat_item.message["en"]))
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chat_item = chat_history.chat_history[key]
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# TODO: is it MAX_TOKENS or MAX_TOKENS - max_new_tokens??
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logger.debug(f"History: " + str(chat_item) + " [" + str(chat_item.num_tokens) + "]")
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if total_num_tokens + chat_item.num_tokens <= MAX_TOKENS - WINDOW - max_new_tokens:
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visible_history.append(chat_item)
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total_num_tokens += chat_item.num_tokens
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else:
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break
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visible_history = reversed(visible_history)
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if not hasattr(bot, "greeting_num_tokens"):
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bot.greeting_num_tokens = await num_tokens(bot.greeting)
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if total_num_tokens + bot.greeting_num_tokens <= MAX_TOKENS - WINDOW - max_new_tokens:
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prompt += bot.name + ": " + bot.greeting + "\n"
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total_num_tokens += bot.greeting_num_tokens
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for chat_item in visible_history:
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if chat_item.is_own_message:
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line = bot.name + ": " + chat_item.message["en"] + "\n"
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else:
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line = "You" + ": " + chat_item.message["en"] + "\n"
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prompt += line
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if chat_history.getSavedPrompt() and not chat_item.is_in_saved_prompt:
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logger.info(f"adding to saved prompt: \"{line}\"")
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chat_history.setSavedPrompt( chat_history.getSavedPrompt() + line, chat_history.saved_context_num_tokens + chat_item.num_tokens )
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chat_item.is_in_saved_prompt = True
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if chat_history.saved_context_num_tokens:
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logger.info(f"saved_context has {chat_history.saved_context_num_tokens+input_num_tokens} tokens. new context would be {total_num_tokens}. Limit is {MAX_TOKENS}")
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if chat_history.getSavedPrompt():
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if chat_history.saved_context_num_tokens+input_num_tokens > MAX_TOKENS - max_new_tokens:
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chat_history.setFastForward(False)
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if chat_history.getFastForward():
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logger.info("using saved prompt")
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prompt = chat_history.getSavedPrompt()
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if not chat_history.getSavedPrompt() or not chat_history.getFastForward():
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logger.info("regenerating prompt")
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chat_history.setSavedPrompt(prompt, total_num_tokens)
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for key, chat_item in chat_history.chat_history.items():
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if key != list(chat_history.chat_history)[-1]: # exclude current item
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chat_history.chat_history[key].is_in_saved_prompt = True
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chat_history.setFastForward(True)
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prompt += "You: " + simple_prompt + "\n"
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prompt += bot.name + ":"
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return prompt
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async def num_tokens(input_text: str):
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# os.makedirs("./models/pygmalion-6b", exist_ok=True)
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# hf_hub_download(repo_id="PygmalionAI/pygmalion-6b", filename="config.json", cache_dir="./models/pygmalion-6b")
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# config = AutoConfig.from_pretrained("./models/pygmalion-6b/config.json")
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global tokenizer
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if not tokenizer:
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tokenizer = AutoTokenizer.from_pretrained("PygmalionAI/pygmalion-6b")
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encoding = tokenizer.encode(input_text, add_special_tokens=False)
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max_input_size = tokenizer.max_model_input_sizes
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return len(encoding)
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async def estimate_num_tokens(input_text: str):
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return len(input_text)//4+1
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