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from fastapi import FastAPI, Form, Request,Response, WebSocket, WebSocketDisconnect
from fastapi.responses import HTMLResponse
from jinja2 import Template
import markdown
import time
from datetime import datetime, timedelta
from apscheduler.schedulers.background import BackgroundScheduler
from agents import DeepResearchAgent, get_llms
import hashlib
import threading
import logging
from queue import Queue
import json
from collections import Counter
lock = threading.Lock()
app = FastAPI()
current_user = None
# 每日最大回复次数
MAX_REPLIES_PER_DAY = 500
# 当日回复次数计数器
reply_count = 0
# 启动时设置计数器重置
last_reset_time = datetime.now()
# HTML模板
html_template = """
<!DOCTYPE html>
<html>
<head>
<title>CoI Agent online demo 😊</title>
<style>
body {
font-family: 'Arial', sans-serif;
background-color: #f4f4f9;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
}
.container {
width: 95%;
max-width: 1200px;
background-color: #fff;
padding: 2rem;
border-radius: 10px;
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
h1 {
font-size: 1.5rem;
margin-bottom: 1.5rem;
color: #333;
text-align: center;
}
form {
margin-bottom: 1.5rem;
}
.form-group {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 1.5rem;
}
.form-group label {
flex: 0;
font-size: 1 rem; /* 增大字体 */
color: #333;
margin-right: 0.5rem;
background-color: #f0f8ff; /* 气泡背景颜色 */
padding: 0.5rem 1rem; /* 气泡内边距 */
border-radius: 10px; /* 气泡圆角 */
text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1); /* 艺术字效果 */
font-family: 'Times new roman', cursive, sans-serif; /* 艺术字体 */
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1); /* 气泡阴影 */
}
.form-group input {
flex: 4;
padding: 0.6rem;
font-size: 1rem;
border: 1px solid #ccc;
border-radius: 5px;
margin-left: 1rem;
}
.form-group button {
flex: 0;
padding: 0.6rem 1rem;
font-size: 1rem;
background-color: #F2A582;
color: #fff;
border: none;
border-radius: 5px;
cursor: pointer;
transition: background-color 0.3s ease;
margin-left: 1rem;
}
.form-group button:hover {
background-color: #0056b3;
}
.loading,
.time-box,
.counter-box,
.result,
.error {
margin-top: 1.5rem;
}
.loading {
font-size: 1.2rem;
color: #007bff;
animation: fadeIn 0.5s ease-in-out;
text-align: center;
display: none;
}
.time-counter-container {
display: flex;
justify-content: space-between;
}
.time-box,
.counter-box {
display: inline-block;
padding: 0.5rem 1rem;
background-color: #e9ecef;
border-radius: 10px;
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
font-size: 0.9rem;
margin: 0.5rem;
flex: 1;
text-align: center;
}
.result {
display: flex;
justify-content: space-between;
flex-wrap: wrap;
}
.result .box {
flex: 1;
margin: 0.5rem;
padding: 0.5rem;
background-color:#fafafa;
color:#4a4a4a;
word-wrap: break-word;
height: 500px;
overflow-y: auto;
font-size: 0.9rem;
font-family: "Times New Roman", Times, serif;
line-height: 1.8;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
border-radius: 10px;
border: 1px solid #ddd;
}
.error .box {
width: 95%;
padding: 1rem;
background-color: #f8d7da;
color: #721c24;
border-radius: 10px;
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
word-wrap: break-word;
margin-left: 1rem;
}
h2 {
font-size: 1.3rem;
margin-bottom: 1rem;
color: #333;
}
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
.progress-bar-container {
width: 99%;
background-color: #e9ecef;
border-radius: 10px;
overflow: hidden;
margin: 0.5rem auto; /* 水平居中 */
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}
.progress-bar {
height: 20px;
background-color: #727372;
width: 0%;
transition: width 0.1s ease;
}
.example-container {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 1.5rem;
height: 50px;
margin-left: 1rem;
}
.example-label {
flex: 0.7;
font-size: 1rem; /* 修正了 font-size 的语法 */
color: purple; /* 将字体颜色改为紫色 */
text-align: center;
margin-right: 0rem;
padding: 0.5rem 0.2rem;
background-color: #f0f8ff;
border: 1px solid white; /* 添加白色边框 */
border-radius: 10px;
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
font-family: 'Times New Roman', cursive, sans-serif;
text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
position: relative; /* 为了放置表格状符号 */
display: flex;
align-items: center;
}
.example-label::before {
content: "📋"; /* 表格状符号 */
margin-right: 0.5rem; /* 符号和文本之间的间距 */
font-size: 1.2rem;
color: purple; /* 符号颜色也改成紫色 */
}
.example-topics {
flex: 6;
display: flex;
min-width: 80%;
justify-content: space-around;
}
.example-topics button {
padding: 0.5rem 1rem;
font-size: 0.9rem;
background-color: #f0f8ff; /* 橙色 */
color: #000000;
border: none;
border-radius: 5px;
cursor: pointer;
margin: 0.3rem;
transition: background-color 0.3s ease;
height: 50px;
min-width: 320px;
border: 1px solid white; /* 添加白色边框 */
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
font-family: 'Times New Roman', cursive, sans-serif;
}
.example-topics button:hover {
background-color: #e0e0e0;
}
</style>
<script>
let startTime = 0;
let intervalId = null;
let progressIntervalId = null;
let maxTime = 180; // 最大时间180秒
function showLoading() {
document.getElementById("loading").style.display = "block";
document.getElementById("submit-btn").disabled = true;
startTime = Date.now();
intervalId = setInterval(updateTime, 100);
progressIntervalId = setInterval(updateProgressBar, 100);
// 隐藏错误消息
const errorBox = document.querySelector(".error");
if (errorBox) {
errorBox.style.display = "none";
}
}
function hideLoading() {
document.getElementById("loading").style.display = "none";
document.getElementById("submit-btn").disabled = false;
if (intervalId) {
clearInterval(intervalId);
intervalId = null;
}
if (progressIntervalId) {
clearInterval(progressIntervalId);
progressIntervalId = null;
}
updateProgressBar(100); // 立即更新进度条至100%
}
function updateTime() {
const now = Date.now();
const elapsed = ((now - startTime) / 1000).toFixed(2);
document.getElementById("time-taken").innerText = `Time Taken: ${elapsed} s`;
}
function updateProgressBar(percentage = null) {
const progressBar = document.getElementById("progress-bar");
if (percentage !== null) {
progressBar.style.width = `${percentage}%`;
} else {
const now = Date.now();
const elapsed = (now - startTime) / 1000;
const progress = Math.min((elapsed / maxTime) * 60, 97);
progressBar.style.width = `${progress}%`;
}
}
function fillTopic(topic) {
document.getElementById("topic").value = topic;
}
</script>
</head>
<body>
<div class="container">
<div style="display: flex; justify-content: center; align-items: center; text-align: center; margin-bottom: 1.5rem;">
<div>
<h1 >Chain-of-Ideas Agent: Revolutionizing Research Via Novel Idea Development with LLM Agents</h1>
<h3 style="margin: 0;">If this demo pleases you, please give us a star ⭐ on Github or 💖 on this space.</h3>
<h5 style="margin: 0;">
We only provide a simplified version here, and the number of replies is limited daily. <br>
If you want to experience the full version, please go to our GitHub repository
<a href="https://github.com/DAMO-NLP-SG/CoI-Agent" color="blue""> https://github.com/DAMO-NLP-SG/CoI-Agent </a> <br>
Due to the instability of PDF downloads, the waiting time may be longer, thank you for your patience.
</h5>
</div>
</div>
<div class="time-counter-container">
<div id="time-taken" class="time-box">Time Taken: {{ time_taken }} seconds</div>
<div class="counter-box">Today's Replies: {{ reply_count }}/500 </div>
</div>
<div class="progress-bar-container">
<div id="progress-bar" class="progress-bar"></div>
</div>
<div class="result">
<div class="box">
<div>{{ idea | safe }}</div>
</div>
</div>
<form action="/" method="post" onsubmit="showLoading()">
<div class="form-group">
<input type="text" id="topic" name="topic" placeholder="Enter your topic">
<input type="hidden" id="user_id" name="user_id">
<input type="hidden" id="state" name="state">
<button type="submit" id="submit-btn">{{ button_text }}</button>
</div>
</form>
<div class="example-container">
<div class="example-label">Example:</div>
<div class="example-topics">
<button onclick="fillTopic('Realistic Image Synthesis in Medical Imaging')">Realistic Image Synthesis in Medical Imaging</button>
<button onclick="fillTopic('Using diffusion to generate road layout')">Using diffusion to generate road layout</button>
<button onclick="fillTopic('Using LLM-based agent to generate research ideas')">Using LLM-based agent to generate research ideas</button>
</div>
</div>
<div id="loading" class="loading">{{ loading_text }}</div>
{% if error %}
<div class="error">
<div class="box">
<h2>Error</h2>
<div>{{ error }}</div>
</div>
</div>
{% endif %}
</div>
<script>
{{ script}}
</script>
<script>
const socket = new WebSocket("ws://localhost:7860/ws");
socket.addEventListener('open', function (event) {
const userId = document.getElementById("user_id").value;
socket.send(JSON.stringify({ action: "connect", user_id: userId }));
});
window.addEventListener("beforeunload", function (event) {
const userId = document.getElementById("user_id").value;
socket.send(JSON.stringify({ action: "disconnect", user_id: userId }));
});
</script>
</body>
</html>
"""
def generate_user_id(ip: str) -> str:
# 使用哈希函数生成用户 ID
return hashlib.md5(ip.encode()).hexdigest()
# 重置每日计数器
def reset_counter():
global reply_count
reply_count = 0
queue.queue.clear()
# 设置定时任务每天0点重置计数器
scheduler = BackgroundScheduler()
scheduler.add_job(reset_counter, 'cron', hour=0, minute=0)
scheduler.start()
def fix_markdown(text):
lines = text.split('\n')
# Initialize the result list
result = []
# Iterate through the lines
for i, line in enumerate(lines):
# Check if the current line starts with a numbered list item
numbers = ['1.', '2.', '3.', '4.', '5.', '6.', '7.', '8.', '9.', '10.', '11.', '12.', '13.', '14.', '15.', '16.', '17.', '18.', '19.', '20.','21.','22.','23.','24.','25.','26.','27.','28.','29.','30.']
if line.lstrip().startswith(tuple(numbers)):
# If it's not the first line and the previous line is not blank, add a blank line
if i > 0 and lines[i - 1].strip():
result.append('')
# Append the current line to the result
result.append(line)
# Join the result list into a single string with newline characters
return '<br>'.join(result)
script_template = """
function setstate() {{
document.getElementById("user_id").value = "{user_id}";
document.getElementById("state").value = "{state}";
let userId = document.getElementById("user_id").value;
let state = document.getElementById("state").value;
console.log(`1 User ID: ${{userId}}, State: ${{state}}`);
}}
window.onload = setstate;
"""
queue = Queue()
@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
global current_user
await websocket.accept()
print("WebSocket connection established.")
try:
while True:
data = await websocket.receive_text()
message = json.loads(data)
user_id = message.get("user_id")
action = message.get("action")
print(user_id, action)
if action == "disconnect":
if user_id == current_user:
continue
for item in queue.queue:
if item == user_id:
queue.queue.remove(item)
print(f"User {user_id} disconnected.")
except WebSocketDisconnect:
print("WebSocket connection closed.")
@app.get("/", response_class=HTMLResponse)
def form_get(request: Request):
client_ip = request.client.host
user_id = generate_user_id(client_ip)
script = script_template.format(user_id=user_id, state="generate")
print(client_ip,user_id)
return Template(html_template).render(idea= "This is a example of the idea geneartion", error=None, reply_count=reply_count,button_text="Generate",loading_text="Generating content, Usually takes 3-4 minutes, please wait...",script=script)
@app.post("/", response_class=HTMLResponse)
def form_post(request: Request,topic: str = Form(...), user_id: str = Form(...), state: str = Form(...)):
global reply_count
global current_user
print("current queue length",len(queue.queue))
start_time = time.time()
client_ip = request.client.host
if user_id == "":
user_id = generate_user_id(client_ip)
if state == "":
state = "generate"
script = script_template.format(user_id=user_id, state=state)
# if user_id in queue.queue:
# # 如果用户在队列中，移除用户
# queue.queue.remove(user_id)
# state = "generate"
loading_text = "Generating content, Usually takes 3-4 minutes, please wait..."
if state == "generate":
if not queue.empty():
queue_len = queue.qsize()
if queue_len + reply_count >= MAX_REPLIES_PER_DAY:
error_message = "Today's maximum number of replies has been reached. Please try again tomorrow."
return Template(html_template).render(idea="", error=error_message, reply_count=reply_count, button_text="Generate",loading_text=loading_text,script=script)
if user_id in queue.queue:
error_message = "You already have a request in the queue. Submitting a new request will cancel the previous request. Please confirm if you need to submit a new request. If so, click continue. There are currently {} requests being processed."
else:
error_message = "There are currently {} requests being processed. If you want to queue, please write your original topic and click the Continue button and you will enter the queue.".format(queue_len)
new_state = "continue"
new_button_text = "Continue"
script = f"""
function setstate() {{
document.getElementById("user_id").value = "{user_id}";
document.getElementById("state").value = "{new_state}";
let userId = document.getElementById("user_id").value;
let state = document.getElementById("state").value;
console.log(`1 User ID: ${{userId}}, State: ${{state}}`);
document.getElementById("topic").value = "{topic}";
}}
window.onload = setstate;
"""
print(f"current1 user_id={user_id}, state={new_state}")
return Template(html_template).render(idea="", error=error_message, reply_count=reply_count, button_text=new_button_text,loading_text=f"Generating content, Usually takes {(queue_len+1)*3}-{(queue_len+1)*4} minutes, please wait...",script=script)
queue.put(user_id)
new_state = "generate"
new_button_text = "Generate"
queue_len = queue.qsize()
script = script_template.format(user_id=user_id, state=new_state)
# 判断当前是否轮到该用户,如果没轮到则一直等待到轮到为止
print(queue.queue[0], [user_id,topic])
while queue.queue[0] != user_id:
counts = Counter(queue.queue)
if counts[user_id] > 1:
while counts[user_id] > 1:
queue.queue.remove(user_id)
counts[user_id] -= 1
return Template(html_template).render(
idea="",
error="Request was cancelled.",
reply_count=reply_count,
button_text="Generate",
loading_text=loading_text,
script=script
)
time.sleep(2)
continue
try:
with lock:
current_user = user_id
logging.info(f"Processing request for topic: {topic}")
start_time = time.time()
error_message = None
idea = ""
time_taken = 0
# 检查是否超过每日最大回复次数
if reply_count >= MAX_REPLIES_PER_DAY:
error_message = "Today's maximum number of replies has been reached. Please try again tomorrow."
logging.info(f"Today's maximum number of replies has been reached. Please try again tomorrow.")
try:
main_llm, cheap_llm = get_llms()
deep_research_agent = DeepResearchAgent(llm=main_llm, cheap_llm=cheap_llm, improve_cnt=1, max_chain_length=5, min_chain_length=3, max_chain_numbers=1)
print(f"begin to generate idea of topic {topic}")
idea, related_experiments, entities, idea_chain, ideas, trend, future, human, year = deep_research_agent.generate_idea_with_chain(topic)
idea = fix_markdown(idea)
idea = markdown.markdown(idea)
# 更新每日回复次数
reply_count += 1
end_time = time.time()
time_taken = round(end_time - start_time, 2)
logging.info(f"Successfully generated idea for topic: {topic}")
except Exception as e:
end_time = time.time()
time_taken = round(end_time - start_time, 2)
logging.error(f"Failed to generate idea for topic: {topic}, Error: {str(e)}")
error_message = str(e)
# 从队列中移除当前用户
finished = queue.get()
print(f"finished: {finished}, still in queue: {queue.qsize()}")
return Template(html_template).render(idea=idea, error=error_message, reply_count=reply_count, time_taken=time_taken,button_text=new_button_text,loading_text=loading_text,script=script)
except Exception as e:
error_message = str(e)
queue.get()
return Template(html_template).render(idea="", error=error_message, reply_count=reply_count, button_text="Generate",loading_text=loading_text,script=script)
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