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61 lines
2.3 KiB
61 lines
2.3 KiB
from flask import Flask, jsonify
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from flask import request
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from transformers import pipeline
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import redis
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import uuid
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import json
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from threading import Thread
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from vllm import LLM, SamplingParams
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import time
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app = Flask(__name__)
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app.config["JSON_AS_ASCII"] = False
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pool = redis.ConnectionPool(host='localhost', port=63179, max_connections=50,db=11, password="zhicheng123*")
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redis_ = redis.Redis(connection_pool=pool, decode_responses=True)
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db_key_query = 'query'
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db_key_result = 'result'
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batch_size = 32
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sampling_params = SamplingParams(temperature=0.95, top_p=0.7,presence_penalty=0.9,stop="</s>", max_tokens=2048)
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models_path = "/home/majiahui/project/models-llm/openbuddy-llama-7b-finetune"
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llm = LLM(model=models_path, tokenizer_mode="slow")
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def classify(batch_size): # 调用模型，设置最大batch_size
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while True:
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texts = []
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query_ids = []
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if redis_.llen(db_key_query) == 0: # 若队列中没有元素就继续获取
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time.sleep(2)
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continue
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for i in range(min(redis_.llen(db_key_query), batch_size)):
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query = redis_.lpop(db_key_query).decode('UTF-8') # 获取query的text
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query_ids.append(json.loads(query)['id'])
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texts.append(json.loads(query)['text']) # 拼接若干text 为batch
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outputs = llm.generate(texts, sampling_params) # 调用模型
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for (id_, output) in zip(query_ids, outputs):
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res = output.outputs[0].text
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redis_.set(id_, json.dumps(res)) # 将模型结果送回队列
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@app.route("/predict", methods=["POST"])
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def handle_query():
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text = request.json["texts"] # 获取用户query中的文本 例如"I love you"
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id_ = str(uuid.uuid1()) # 为query生成唯一标识
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d = {'id': id_, 'text': text} # 绑定文本和query id
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redis_.rpush(db_key_query, json.dumps(d)) # 加入redis
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while True:
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result = redis_.get(id_) # 获取该query的模型结果
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if result is not None:
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redis_.delete(id_)
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result_text = {'code': "200", 'data': json.loads(result)}
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break
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time.sleep(1)
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return jsonify(result_text) # 返回结果
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if __name__ == "__main__":
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t = Thread(target=classify, args=(batch_size,))
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t.start()
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app.run(debug=False, host='0.0.0.0', port=18000)
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