Bakalarska_praca/Backend/model.py
2024-10-12 14:08:12 +02:00

83 lines
3.0 KiB
Python

import os
import requests
from langchain_huggingface import HuggingFaceEmbeddings
from langchain_elasticsearch import ElasticsearchStore
import logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
mistral_api_key = "hXDC4RBJk1qy5pOlrgr01GtOlmyCBaNs"
if not mistral_api_key:
raise ValueError("API ключ не найден. Убедитесь, что переменная MISTRAL_API_KEY установлена.")
class CustomMistralLLM:
def __init__(self, api_key: str, endpoint_url: str):
self.api_key = api_key
self.endpoint_url = endpoint_url
def generate_text(self, prompt: str, max_tokens=512, temperature=0.7):
headers = {
"Authorization": f"Bearer {self.api_key}",
"Content-Type": "application/json"
}
payload = {
"model": "mistral-small-latest",
"messages": [{"role": "user", "content": prompt}],
"max_tokens": max_tokens,
"temperature": temperature
}
response = requests.post(self.endpoint_url, headers=headers, json=payload)
response.raise_for_status()
result = response.json()
logger.info(f"Полный ответ от модели Mistral: {result}")
return result.get("choices", [{}])[0].get("message", {}).get("content", "No response")
logger.info("Загрузка модели HuggingFaceEmbeddings...")
embeddings = HuggingFaceEmbeddings(model_name="sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2")
vectorstore = ElasticsearchStore(
es_url="http://localhost:9200",
index_name='drug_docs',
embedding=embeddings,
es_user='elastic',
es_password='sSz2BEGv56JRNjGFwoQ191RJ'
)
llm = CustomMistralLLM(
api_key=mistral_api_key,
endpoint_url="https://api.mistral.ai/v1/chat/completions"
)
def process_query_with_mistral(query, k=10):
logger.info("Обработка запроса началась.")
try:
response = vectorstore.similarity_search(query, k=k)
if not response:
return {"summary": "Ничего не найдено", "links": [], "status_log": ["Ничего не найдено."]}
documents = [hit.metadata.get('text', '') for hit in response]
links = [hit.metadata.get('link', '-') for hit in response]
structured_prompt = (
f"Na základe otázky: '{query}' a nasledujúcich informácií o liekoch: {documents}. "
"Uveďte tri vhodné lieky alebo riešenia s krátkym vysvetlením pre každý z nich. "
"Odpoveď musí byť v slovenčine."
)
summary = llm.generate_text(prompt=structured_prompt, max_tokens=512, temperature=0.7)
return {"summary": summary, "links": links, "status_log": ["Ответ получен от модели Mistral."]}
except Exception as e:
logger.info(f"Ошибка: {str(e)}")
return {"summary": "Произошла ошибка", "links": [], "status_log": [f"Ошибка: {str(e)}"]}