feat(frontend): 初步实现聊天页面的智能回复功能

- 新增 init_global_var 函数，用于统一初始化所有全局变量
- 修改 get_prompt_store、get_sql_engine、get_docs 和 get_datasets 函数，使用新的全局变量初始化逻辑
- 更新 main.py 中的代码，使用新的 init_global_var 函数替代原有的单独初始化方法

frontend/chat_page.py

@@ -2,7 +2,7 @@ import gradio as gr
 import sys
 from pathlib import Path
 sys.path.append(str(Path(__file__).resolve().parent.parent))
-from global_var import model,tokenizer
+from global_var import get_model, get_tokenizer
 
 def chat_page():
     with gr.Blocks() as demo:
@@ -17,11 +17,39 @@ def chat_page():
             return "", history + [{"role": "user", "content": user_message}]
 
         def bot(history: list):
-            bot_message = random.choice(["How are you?", "I love you", "I'm very hungry"])
-            history.append({"role": "assistant", "content": ""})
-            for character in bot_message:
-                history[-1]['content'] += character
-                time.sleep(0.1)
+            model = get_model()
+            tokenizer = get_tokenizer()
+            print(tokenizer)
+            print(model)
+
+            # 获取用户的最新消息
+            user_message = history[-1]["content"]
+            
+            # 使用 tokenizer 对消息进行预处理
+            messages = [{"role": "user", "content": user_message}]
+            inputs = tokenizer.apply_chat_template(
+                messages,
+                tokenize=True,
+                add_generation_prompt=True,
+                return_tensors="pt",
+            ).to("cuda")
+            
+            # 使用 TextStreamer 进行流式生成
+            from transformers import TextStreamer
+            text_streamer = TextStreamer(tokenizer, skip_prompt=True)
+            
+            # 调用模型进行推理
+            generated_text = ""
+            for new_token in model.generate(
+                input_ids=inputs,
+                streamer=text_streamer,
+                max_new_tokens=1024,
+                use_cache=False,
+                temperature=1.5,
+                min_p=0.1,
+            ):
+                generated_text += tokenizer.decode(new_token, skip_special_tokens=True)
+                history.append({"role": "assistant", "content": generated_text})
                 yield history
 
         msg.submit(user, [msg, chatbot], [msg, chatbot], queue=False).then(
@@ -32,4 +60,8 @@ def chat_page():
     return demo
 
 if __name__ == "__main__":
-    chat_page().queue().launch()
+    from model_manage_page import model_manage_page
+    # 装载两个页面
+    demo = gr.TabbedInterface([model_manage_page(), chat_page()], ["模型管理", "聊天"])
+    demo.queue()
+    demo.launch()

frontend/dataset_generate_page.py

@@ -1,5 +1,6 @@
 import gradio as gr
-from global_var import docs, scan_docs_directory, prompt_store
+from tools import scan_docs_directory
+from global_var import get_docs, scan_docs_directory, get_prompt_store
 
 def dataset_generate_page():
     with gr.Blocks() as demo:
@@ -7,7 +8,7 @@ def dataset_generate_page():
         with gr.Row():
             with gr.Column():
                 # 获取文档列表并设置初始值
-                docs_list = [str(doc.name) for doc in scan_docs_directory("workdir")]
+                docs_list = [str(doc.name) for doc in get_docs()]
                 initial_doc = docs_list[0] if docs_list else None
                 
                 doc_dropdown = gr.Dropdown(
@@ -21,7 +22,7 @@ def dataset_generate_page():
 
             with gr.Column():
                 # 获取模板列表并设置初始值
-                prompts = prompt_store.all()
+                prompts = get_prompt_store().all()
                 prompt_choices = [f"{p['id']} {p['name']}" for p in prompts]
                 initial_prompt = prompt_choices[0] if prompt_choices else None
                 

frontend/dataset_manage_page.py

@@ -1,5 +1,5 @@
 import gradio as gr
-from global_var import datasets
+from global_var import get_datasets
 from tinydb import Query
 
 def dataset_manage_page():
@@ -7,7 +7,7 @@ def dataset_manage_page():
         gr.Markdown("## 数据集管理")
         with gr.Row():
             # 获取数据集列表并设置初始值
-            datasets_list = [str(ds["name"]) for ds in datasets.all()]
+            datasets_list = [str(ds["name"]) for ds in get_datasets().all()]
             initial_dataset = datasets_list[0] if datasets_list else None
             
             dataset_dropdown = gr.Dropdown(
@@ -33,7 +33,7 @@ def dataset_manage_page():
             
             # 从数据库获取数据集
             Dataset = Query()
-            ds = datasets.get(Dataset.name == dataset_name)
+            ds = get_datasets().get(Dataset.name == dataset_name)
             if not ds:
                 return {"samples": [], "__type__": "update"}
             

frontend/model_manage_page.py

@@ -6,7 +6,7 @@ from unsloth import FastLanguageModel
 import torch
 
 sys.path.append(str(Path(__file__).resolve().parent.parent))
-from global_var import model,tokenizer
+from global_var import get_model, get_tokenizer, set_model, set_tokenizer
 from tools.model import get_model_name
 
 def model_manage_page():
@@ -35,9 +35,8 @@ def model_manage_page():
 
         def load_model(selected_model, max_seq_length, load_in_4bit):
             try:
-                global model, tokenizer
                 # 判空操作，如果模型已加载，则先卸载
-                if model is not None:
+                if get_model() is not None:
                     unload_model()
                 
                 model_path = os.path.join(models_dir, selected_model)
@@ -46,6 +45,8 @@ def model_manage_page():
                     max_seq_length=max_seq_length,
                     load_in_4bit=load_in_4bit,
                 )
+                set_model(model)
+                set_tokenizer(tokenizer)
                 return f"模型 {get_model_name(model)} 已加载"
             except Exception as e:
                 return f"加载模型时出错: {str(e)}"
@@ -54,20 +55,17 @@ def model_manage_page():
 
         def unload_model():
             try:
-                global model, tokenizer
                 # 将模型移动到 CPU
+                model = get_model()
                 if model is not None:
                     model.cpu()
                 
-                # 如果提供了 tokenizer，也将其设置为 None
-                if tokenizer is not None:
-                    tokenizer = None
-                
                 # 清空 CUDA 缓存
                 torch.cuda.empty_cache()
                 
-                # 将模型设置为 None
-                model = None
+                # 将模型和tokenizer设置为 None
+                set_model(None)
+                set_tokenizer(None)
 
                 return "当前未加载模型"
             except Exception as e:

frontend/prompt_manage_page.py

@@ -3,13 +3,13 @@ import sys
 from pathlib import Path
 from typing import List
 sys.path.append(str(Path(__file__).resolve().parent.parent))
-from global_var import prompt_store
+from global_var import get_prompt_store
 from schema.prompt import promptTempleta
 def prompt_manage_page():
     def get_prompts() -> List[List[str]]:
         selected_row = None
         try:
-            db = prompt_store
+            db = get_prompt_store()
             prompts = db.all()
             return [
                 [p["id"], p["name"], p["description"], p["content"]]
@@ -20,7 +20,7 @@ def prompt_manage_page():
 
     def add_prompt(name, description, content):
         try:
-            db = prompt_store
+            db = get_prompt_store()
             new_prompt = promptTempleta(
                 name=name if name else "",
                 description=description if description else "",
@@ -38,7 +38,7 @@ def prompt_manage_page():
         if not selected_row:
             raise gr.Error("请先选择要编辑的行")
         try:
-            db = prompt_store
+            db = get_prompt_store()
             db.update({
                 "name": selected_row[1] if selected_row[1] else "",
                 "description": selected_row[2] if selected_row[2] else "",

frontend/setting_page.py

@@ -2,13 +2,13 @@ import gradio as gr
 from typing import List
 from sqlmodel import Session, select
 from schema import APIProvider
-from global_var import sql_engine
+from global_var import get_sql_engine
 
 def setting_page():
     def get_providers() -> List[List[str]]:
         selected_row = None
         try:  # 添加异常处理
-            with Session(sql_engine) as session:
+            with Session(get_sql_engine()) as session:
                 providers = session.exec(select(APIProvider)).all()
                 return [
                     [p.id, p.model_id, p.base_url, p.api_key or ""]
@@ -19,7 +19,7 @@ def setting_page():
 
     def add_provider(model_id, base_url, api_key):
         try:
-            with Session(sql_engine) as session:
+            with Session(get_sql_engine()) as session:
                 new_provider = APIProvider(
                     model_id=model_id if model_id else None,
                     base_url=base_url if base_url else None,
@@ -37,7 +37,7 @@ def setting_page():
         if not selected_row:
             raise gr.Error("请先选择要编辑的行")
         try:
-            with Session(sql_engine) as session:
+            with Session(get_sql_engine()) as session:
                 provider = session.get(APIProvider, selected_row[0])
                 if not provider:
                     raise gr.Error("找不到选中的记录")
@@ -56,7 +56,7 @@ def setting_page():
         if not selected_row:
             raise gr.Error("请先选择要删除的行")
         try:
-            with Session(sql_engine) as session:
+            with Session(get_sql_engine()) as session:
                 provider = session.get(APIProvider, selected_row[0])
                 if not provider:
                     raise gr.Error("找不到选中的记录")

global_var.py

@@ -1,10 +1,60 @@
 from db import get_sqlite_engine, get_prompt_tinydb, get_all_dataset
 from tools import scan_docs_directory
 
-prompt_store = get_prompt_tinydb("workdir")
-sql_engine = get_sqlite_engine("workdir")
-docs = scan_docs_directory("workdir")
-datasets = get_all_dataset("workdir")
+_prompt_store = None
+_sql_engine = None
+_docs = None
+_datasets = None
 
-model = None
-tokenizer = None
+def init_global_var(workdir="workdir"):
+    """Initialize all global variables"""
+    global _prompt_store, _sql_engine, _docs, _datasets
+    _prompt_store = get_prompt_tinydb(workdir)
+    _sql_engine = get_sqlite_engine(workdir)
+    _docs = scan_docs_directory(workdir)
+    _datasets = get_all_dataset(workdir)
+
+def get_prompt_store():
+    return _prompt_store
+
+def set_prompt_store(new_prompt_store):
+    global _prompt_store
+    _prompt_store = new_prompt_store
+
+def get_sql_engine():
+    return _sql_engine
+
+def set_sql_engine(new_sql_engine):
+    global _sql_engine
+    _sql_engine = new_sql_engine
+
+def get_docs():
+    return _docs
+
+def set_docs(new_docs):
+    global _docs
+    _docs = new_docs
+
+def get_datasets():
+    return _datasets
+
+def set_datasets(new_datasets):
+    global _datasets
+    _datasets = new_datasets
+
+_model = None
+_tokenizer = None
+
+def get_model():
+    return _model
+
+def set_model(new_model):
+    global _model
+    _model = new_model
+
+def get_tokenizer():
+    return _tokenizer
+
+def set_tokenizer(new_tokenizer):
+    global _tokenizer
+    _tokenizer = new_tokenizer

main.py

@@ -1,12 +1,13 @@
 import gradio as gr
 from frontend.setting_page import setting_page
 from frontend import *
-from db import initialize_sqlite_db,initialize_prompt_store
-from global_var import sql_engine,prompt_store
+from db import initialize_sqlite_db, initialize_prompt_store
+from global_var import init_global_var, get_sql_engine, get_prompt_store
 
 if __name__ == "__main__":
-    initialize_sqlite_db(sql_engine)
-    initialize_prompt_store(prompt_store)
+    init_global_var()
+    initialize_sqlite_db(get_sql_engine())
+    initialize_prompt_store(get_prompt_store())
     with gr.Blocks() as app:
         gr.Markdown("# 基于文档驱动的自适应编码大模型微调框架")
         with gr.Tabs():

tools/model.py

@@ -1,4 +1,29 @@
 import os
+from unsloth.chat_templates import get_chat_template
+
+def formatting_prompts_func(examples,tokenizer):
+    """格式化对话数据的函数
+    Args:
+        examples: 包含对话列表的字典
+    Returns:
+        包含格式化文本的字典
+    """
+    questions = examples["question"]
+    answer = examples["answer"]
+    
+    # 将Question和Response组合成对话形式
+    convos = [
+        [{"role": "user", "content": q}, {"role": "assistant", "content": r}]
+        for q, r in zip(questions, answer)
+    ]
+    
+    # 使用tokenizer.apply_chat_template格式化对话
+    texts = [
+        tokenizer.apply_chat_template(convo, tokenize=False, add_generation_prompt=False)
+        for convo in convos
+    ]
+    
+    return {"text": texts}
 
 def get_model_name(model):
     return os.path.basename(model.name_or_path)