mirror of
https://github.com/csunny/DB-GPT.git
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389 lines
13 KiB
Python
389 lines
13 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import argparse
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import os
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import uuid
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import json
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import time
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import gradio as gr
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import datetime
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import requests
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from urllib.parse import urljoin
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from pilot.configs.model_config import DB_SETTINGS
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from pilot.connections.mysql_conn import MySQLOperator
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from pilot.configs.model_config import LOGDIR, VICUNA_MODEL_SERVER, LLM_MODEL
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from pilot.conversation import (
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default_conversation,
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conv_templates,
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SeparatorStyle
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)
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from fastchat.utils import (
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build_logger,
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server_error_msg,
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violates_moderation,
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moderation_msg
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)
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from fastchat.serve.gradio_patch import Chatbot as grChatbot
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from fastchat.serve.gradio_css import code_highlight_css
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logger = build_logger("webserver", LOGDIR + "webserver.log")
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headers = {"User-Agent": "dbgpt Client"}
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no_change_btn = gr.Button.update()
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enable_btn = gr.Button.update(interactive=True)
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disable_btn = gr.Button.update(interactive=True)
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enable_moderation = False
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models = []
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dbs = []
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priority = {
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"vicuna-13b": "aaa"
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}
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def gen_sqlgen_conversation(dbname):
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mo = MySQLOperator(
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**DB_SETTINGS
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)
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message = ""
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schemas = mo.get_schema(dbname)
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for s in schemas:
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message += s["schema_info"] + ";"
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return f"数据库{dbname}的Schema信息如下: {message}\n"
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def get_database_list():
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mo = MySQLOperator(**DB_SETTINGS)
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return mo.get_db_list()
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get_window_url_params = """
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function() {
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const params = new URLSearchParams(window.location.search);
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url_params = Object.fromEntries(params);
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console.log(url_params);
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gradioURL = window.location.href
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if (!gradioURL.endsWith('?__theme=dark')) {
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window.location.replace(gradioURL + '?__theme=dark');
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}
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return url_params;
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}
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"""
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def load_demo(url_params, request: gr.Request):
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logger.info(f"load_demo. ip: {request.client.host}. params: {url_params}")
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dbs = get_database_list()
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dropdown_update = gr.Dropdown.update(visible=True)
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if dbs:
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gr.Dropdown.update(choices=dbs)
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state = default_conversation.copy()
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return (state,
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dropdown_update,
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gr.Chatbot.update(visible=True),
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gr.Textbox.update(visible=True),
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gr.Button.update(visible=True),
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gr.Row.update(visible=True),
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gr.Accordion.update(visible=True))
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def get_conv_log_filename():
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t = datetime.datetime.now()
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name = os.path.join(LOGDIR, f"{t.year}-{t.month:02d}-{t.day:02d}-conv.json")
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return name
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def regenerate(state, request: gr.Request):
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logger.info(f"regenerate. ip: {request.client.host}")
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state.messages[-1][-1] = None
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state.skip_next = False
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return (state, state.to_gradio_chatbot(), "") + (disable_btn,) * 5
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def clear_history(request: gr.Request):
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logger.info(f"clear_history. ip: {request.client.host}")
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state = None
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return (state, [], "") + (disable_btn,) * 5
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def add_text(state, text, request: gr.Request):
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logger.info(f"add_text. ip: {request.client.host}. len: {len(text)}")
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if len(text) <= 0:
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state.skip_next = True
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return (state, state.to_gradio_chatbot(), "") + (no_change_btn,) * 5
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if args.moderate:
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flagged = violates_moderation(text)
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if flagged:
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state.skip_next = True
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return (state, state.to_gradio_chatbot(), moderation_msg) + (
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no_change_btn,) * 5
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text = text[:1536] # Hard cut-off
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state.append_message(state.roles[0], text)
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state.append_message(state.roles[1], None)
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state.skip_next = False
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return (state, state.to_gradio_chatbot(), "") + (disable_btn,) * 5
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def post_process_code(code):
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sep = "\n```"
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if sep in code:
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blocks = code.split(sep)
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if len(blocks) % 2 == 1:
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for i in range(1, len(blocks), 2):
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blocks[i] = blocks[i].replace("\\_", "_")
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code = sep.join(blocks)
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return code
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def http_bot(state, db_selector, temperature, max_new_tokens, request: gr.Request):
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start_tstamp = time.time()
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model_name = LLM_MODEL
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dbname = db_selector
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# TODO 这里的请求需要拼接现有知识库, 使得其根据现有知识库作答, 所以prompt需要继续优化
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if state.skip_next:
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# This generate call is skipped due to invalid inputs
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yield (state, state.to_gradio_chatbot()) + (no_change_btn,) * 5
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return
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if len(state.messages) == state.offset + 2:
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# 第一轮对话需要加入提示Prompt
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template_name = "conv_one_shot"
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new_state = conv_templates[template_name].copy()
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new_state.conv_id = uuid.uuid4().hex
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# prompt 中添加上下文提示
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new_state.append_message(new_state.roles[0], gen_sqlgen_conversation(dbname) + state.messages[-2][1])
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new_state.append_message(new_state.roles[1], None)
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state = new_state
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prompt = state.get_prompt()
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skip_echo_len = len(prompt.replace("</s>", " ")) + 1
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# Make requests
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payload = {
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"model": model_name,
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"prompt": prompt,
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"temperature": float(temperature),
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"max_new_tokens": int(max_new_tokens),
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"stop": state.sep if state.sep_style == SeparatorStyle.SINGLE else state.sep2,
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}
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logger.info(f"Requert: \n{payload}")
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state.messages[-1][-1] = "▌"
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yield (state, state.to_gradio_chatbot()) + (disable_btn,) * 5
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try:
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# Stream output
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response = requests.post(urljoin(VICUNA_MODEL_SERVER, "generate_stream"),
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headers=headers, json=payload, stream=True, timeout=20)
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for chunk in response.iter_lines(decode_unicode=False, delimiter=b"\0"):
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if chunk:
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data = json.loads(chunk.decode())
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if data["error_code"] == 0:
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output = data["text"][skip_echo_len:].strip()
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output = post_process_code(output)
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state.messages[-1][-1] = output + "▌"
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yield (state, state.to_gradio_chatbot()) + (disable_btn,) * 5
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else:
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output = data["text"] + f" (error_code: {data['error_code']})"
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state.messages[-1][-1] = output
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yield (state, state.to_gradio_chatbot()) + (disable_btn, disable_btn, disable_btn, enable_btn, enable_btn)
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return
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time.sleep(0.02)
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except requests.exceptions.RequestException as e:
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state.messages[-1][-1] = server_error_msg + f" (error_code: 4)"
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yield (state, state.to_gradio_chatbot()) + (disable_btn, disable_btn, disable_btn, enable_btn, enable_btn)
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return
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state.messages[-1][-1] = state.messages[-1][-1][:-1]
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yield (state, state.to_gradio_chatbot()) + (enable_btn,) * 5
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finish_tstamp = time.time()
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logger.info(f"{output}")
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with open(get_conv_log_filename(), "a") as fout:
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data = {
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"tstamp": round(finish_tstamp, 4),
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"type": "chat",
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"model": model_name,
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"start": round(start_tstamp, 4),
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"finish": round(start_tstamp, 4),
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"state": state.dict(),
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"ip": request.client.host,
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}
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fout.write(json.dumps(data) + "\n")
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block_css = (
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code_highlight_css
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+ """
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pre {
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white-space: pre-wrap; /* Since CSS 2.1 */
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white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
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white-space: -pre-wrap; /* Opera 4-6 */
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white-space: -o-pre-wrap; /* Opera 7 */
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word-wrap: break-word; /* Internet Explorer 5.5+ */
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}
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#notice_markdown th {
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display: none;
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}
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"""
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)
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def build_single_model_ui():
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notice_markdown = """
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# DB-GPT
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[DB-GPT](https://github.com/csunny/DB-GPT) 是一个实验性的开源应用程序，它基于[FastChat](https://github.com/lm-sys/FastChat)，并使用vicuna-13b作为基础模型。此外，此程序结合了langchain和llama-index基于现有知识库进行In-Context Learning来对其进行数据库相关知识的增强。它可以进行SQL生成、SQL诊断、数据库知识问答等一系列的工作。 总的来说，它是一个用于数据库的复杂且创新的AI工具。如果您对如何在工作中使用或实施DB-GPT有任何具体问题，请联系我, 我会尽力提供帮助, 同时也欢迎大家参与到项目建设中, 做一些有趣的事情。
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"""
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learn_more_markdown = """
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### Licence
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The service is a research preview intended for non-commercial use only. subject to the model [License](https://github.com/facebookresearch/llama/blob/main/MODEL_CARD.md) of LLaMA
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"""
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state = gr.State()
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gr.Markdown(notice_markdown, elem_id="notice_markdown")
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with gr.Accordion("参数", open=False, visible=False) as parameter_row:
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temperature = gr.Slider(
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minimum=0.0,
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maximum=1.0,
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value=0.7,
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step=0.1,
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interactive=True,
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label="Temperature",
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)
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max_output_tokens = gr.Slider(
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minimum=0,
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maximum=1024,
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value=512,
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step=64,
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interactive=True,
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label="最大输出Token数",
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)
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with gr.Tabs():
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with gr.TabItem("知识问答", elem_id="QA"):
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pass
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with gr.TabItem("SQL生成与诊断", elem_id="SQL"):
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# TODO A selector to choose database
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with gr.Row(elem_id="db_selector"):
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db_selector = gr.Dropdown(
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label="请选择数据库",
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choices=dbs,
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value=dbs[0] if len(models) > 0 else "",
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interactive=True,
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show_label=True).style(container=False)
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with gr.Blocks():
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chatbot = grChatbot(elem_id="chatbot", visible=False).style(height=550)
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with gr.Row():
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with gr.Column(scale=20):
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textbox = gr.Textbox(
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show_label=False,
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placeholder="Enter text and press ENTER",
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visible=False,
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).style(container=False)
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with gr.Column(scale=2, min_width=50):
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send_btn = gr.Button(value="发送", visible=False)
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with gr.Row(visible=False) as button_row:
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regenerate_btn = gr.Button(value="重新生成", interactive=False)
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clear_btn = gr.Button(value="清理", interactive=False)
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gr.Markdown(learn_more_markdown)
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btn_list = [regenerate_btn, clear_btn]
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regenerate_btn.click(regenerate, state, [state, chatbot, textbox] + btn_list).then(
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http_bot,
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[state, db_selector, temperature, max_output_tokens],
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[state, chatbot] + btn_list,
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)
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clear_btn.click(clear_history, None, [state, chatbot, textbox] + btn_list)
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textbox.submit(
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add_text, [state, textbox], [state, chatbot, textbox] + btn_list
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).then(
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http_bot,
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[state, db_selector, temperature, max_output_tokens],
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[state, chatbot] + btn_list,
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)
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send_btn.click(
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add_text, [state, textbox], [state, chatbot, textbox] + btn_list
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).then(
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http_bot,
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[state, db_selector, temperature, max_output_tokens],
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[state, chatbot] + btn_list
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)
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return state, chatbot, textbox, send_btn, button_row, parameter_row
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def build_webdemo():
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with gr.Blocks(
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title="数据库智能助手",
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# theme=gr.themes.Base(),
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theme=gr.themes.Default(),
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css=block_css,
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) as demo:
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url_params = gr.JSON(visible=False)
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(
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state,
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chatbot,
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textbox,
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send_btn,
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button_row,
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parameter_row,
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) = build_single_model_ui()
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if args.model_list_mode == "once":
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demo.load(
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load_demo,
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[url_params],
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[
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state,
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chatbot,
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textbox,
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send_btn,
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button_row,
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parameter_row,
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],
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_js=get_window_url_params,
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)
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else:
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raise ValueError(f"Unknown model list mode: {args.model_list_mode}")
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return demo
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("--host", type=str, default="0.0.0.0")
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parser.add_argument("--port", type=int)
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parser.add_argument("--concurrency-count", type=int, default=10)
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parser.add_argument(
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"--model-list-mode", type=str, default="once", choices=["once", "reload"]
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)
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parser.add_argument("--share", default=False, action="store_true")
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parser.add_argument(
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"--moderate", action="store_true", help="Enable content moderation"
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)
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args = parser.parse_args()
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logger.info(f"args: {args}")
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dbs = get_database_list()
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logger.info(args)
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demo = build_webdemo()
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demo.queue(
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concurrency_count=args.concurrency_count, status_update_rate=10, api_open=False
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).launch(
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server_name=args.host, server_port=args.port, share=args.share, max_threads=200,
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) |