File size: 17,875 Bytes
f1c00ca cae4ecb f1c00ca cae4ecb f1c00ca cae4ecb f1c00ca cae4ecb | 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 | import gradio as gr
import asyncio
import json
import atexit
import signal
import sys
from ..mcp_agent.agent import MCP_Agent
class GradioMCPApp:
def __init__(self):
self.agent = None
self.chat_history = []
self._loop = None
self.server_count = 1
def get_or_create_loop(self):
"""Get existing event loop or create a new one"""
if self._loop is None or self._loop.is_closed():
self._loop = asyncio.new_event_loop()
asyncio.set_event_loop(self._loop)
return self._loop
async def initialize_agent(self, openai_api_key, *server_configs):
"""Initialize the MCP Agent with provided configuration"""
try:
# Clean up existing agent first
if self.agent:
await self.disconnect_agent()
# Build MCP servers configuration from form fields
# server_configs comes as a flat list: [url1, name1, type1, token1, url2, name2, type2, token2, ...]
mcp_servers = []
for i in range(0, len(server_configs), 4):
if i + 3 < len(server_configs):
server_url = server_configs[i]
server_name = server_configs[i + 1]
server_type = server_configs[i + 2]
headers = server_configs[i + 3]
if server_url and server_url.strip():
server_config = {
'url': server_url.strip(),
'name': server_name.strip() if server_name and server_name.strip() else f'server_{i//4 + 1}',
'type': server_type if server_type else 'http',
'headers': headers.strip() if headers and headers.strip() else None
}
mcp_servers.append(server_config)
# Initialize agent
api_keys = {'openai_api_key': openai_api_key}
self.agent = MCP_Agent(api_keys=api_keys, mpc_server_urls=mcp_servers)
# Connect to MCP servers
await self.agent.connect()
server_count = len(mcp_servers)
if server_count == 0:
return True, "Agent initialized successfully (no MCP servers configured)!"
else:
return True, f"Agent initialized successfully with {server_count} MCP server(s)!"
except Exception as e:
return False, f"Error initializing agent: {str(e)}"
async def chat_with_agent(self, message):
"""Handle text chat with the agent"""
if not self.agent:
return self.chat_history, "Please initialize the agent first by providing your OpenAI API key and clicking 'Initialize Agent'."
if not message or not message.strip():
return self.chat_history, "Please provide a message."
try:
# Get response from agent
response = await self.agent.chat(message.strip())
# Update chat history
self.chat_history.append([message.strip(), str(response)])
return self.chat_history, ""
except Exception as e:
error_msg = f"Error during chat: {str(e)}"
self.chat_history.append([message, error_msg])
return self.chat_history, error_msg
async def reset_agent(self):
"""Reset the agent's conversation history"""
if self.agent:
self.agent.reset()
self.chat_history = []
return [], "Agent conversation history reset successfully!"
else:
return [], "No agent to reset. Please initialize the agent first."
async def disconnect_agent(self):
"""Disconnect from MCP servers"""
if self.agent:
try:
await self.agent.disconnect()
except Exception as e:
print(f"Error during disconnect: {e}")
finally:
self.agent = None
self.chat_history = []
return [], "Agent disconnected successfully!"
async def cleanup(self):
"""Clean up resources"""
if self.agent:
await self.disconnect_agent()
if self._loop and not self._loop.is_closed():
self._loop.close()
# Create the app instance
app_instance = GradioMCPApp()
def run_async_safely(coro, *args):
"""Safely run async function with proper error handling"""
loop = app_instance.get_or_create_loop()
try:
return loop.run_until_complete(coro(*args))
except Exception as e:
print(f"Error in async operation: {e}")
return None, f"Error: {str(e)}"
# Define async wrapper functions for Gradio
def initialize_agent_wrapper(openai_api_key, *server_configs):
success, message = run_async_safely(
app_instance.initialize_agent,
openai_api_key, *server_configs
)
if success is None:
return gr.update(visible=False), gr.update(visible=True), message
return gr.update(visible=success), gr.update(visible=not success), message
def chat_wrapper(message):
chat_history, error_msg = run_async_safely(app_instance.chat_with_agent, message)
if chat_history is None:
return [], error_msg, ""
return chat_history, error_msg, "" # Clear input
def reset_wrapper():
chat_history, message = run_async_safely(app_instance.reset_agent)
if chat_history is None:
return [], message
return chat_history, message
def disconnect_wrapper():
chat_history, message = run_async_safely(app_instance.disconnect_agent)
if chat_history is None:
return [], gr.update(visible=False), gr.update(visible=True), message
return chat_history, gr.update(visible=False), gr.update(visible=True), message
# Cleanup function for graceful shutdown
def cleanup_on_exit():
"""Cleanup function to run on exit"""
try:
loop = app_instance.get_or_create_loop()
if not loop.is_closed():
loop.run_until_complete(app_instance.cleanup())
except Exception as e:
print(f"Error during cleanup: {e}")
# Register cleanup function
atexit.register(cleanup_on_exit)
# Handle SIGINT (Ctrl+C) gracefully
def signal_handler(signum, frame):
print("\nReceived interrupt signal. Cleaning up...")
cleanup_on_exit()
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
# Server management functions
def add_server(current_count):
"""Show the next server configuration"""
new_count = min(current_count + 1, 3) # Max 3 servers
return (
new_count,
gr.update(visible=new_count >= 2), # server2_group
gr.update(visible=new_count >= 3), # server3_group
gr.update(interactive=new_count < 3), # add_server_btn
gr.update(interactive=new_count > 1) # remove_server_btn
)
def remove_server(current_count):
"""Hide the last server configuration"""
new_count = max(current_count - 1, 1) # Min 1 server
return (
new_count,
gr.update(visible=new_count >= 2), # server2_group
gr.update(visible=new_count >= 3), # server3_group
gr.update(interactive=new_count < 3), # add_server_btn
gr.update(interactive=new_count > 1) # remove_server_btn
)
# Create the Gradio interface
with gr.Blocks(title="MCP Agent Chat", theme=gr.themes.Soft()) as demo:
with gr.Row():
gr.Markdown("# MCP Agent Chat Interface")
gr.HTML("") # Balance spacing
with gr.Sidebar():
# Sidebar for configuration
sidebar_column = gr.Column(scale=1, min_width=350)
with sidebar_column:
gr.Markdown("## 🔧 Configuration")
openai_key = gr.Textbox(
label="OpenAI API Key",
type="password",
placeholder="sk-...",
info="Your OpenAI API key for the language model"
)
gr.Markdown("### MCP Servers Setup")
gr.Markdown("Configure your MCP server connections (leave all URLs empty to run without MCP servers)")
# Container for dynamic server configurations
servers_container = gr.Column()
# Initial server configuration
with servers_container:
# Server 1 (always present)
with gr.Tab("Url based servers"):
with gr.Group():
gr.Markdown("#### Server 1")
server1_url = gr.Textbox(
label="Server URL",
placeholder="http://localhost:8000",
info="The URL of your MCP server"
)
server1_name = gr.Textbox(
label="Server Name",
placeholder="server_1",
info="A friendly name for your MCP server"
)
server1_type = gr.Dropdown(
label="Server Type",
choices=["http", "SSE"],
value="http",
info="The type of MCP server connection"
)
server1_headers = gr.Textbox(
label="Headers (Optional)",
type="password",
placeholder="Leave empty if not required",
info="Headers for the MCP server (if required), example: {'Authorization': 'Bearer 1234567890'}"
)
# Server 2 (optional)
server2_group = gr.Group(visible=False)
with server2_group:
gr.Markdown("#### Server 2")
server2_url = gr.Textbox(
label="Server URL",
placeholder="http://localhost:8001",
info="The URL of your MCP server"
)
server2_name = gr.Textbox(
label="Server Name",
placeholder="server_2",
info="A friendly name for your MCP server"
)
server2_type = gr.Dropdown(
label="Server Type",
choices=["http", "SSE"],
value="http",
info="The type of MCP server connection"
)
server2_headers = gr.Textbox(
label="Headers (Optional)",
type="password",
placeholder="Leave empty if not required",
info="Headers for the MCP server (if required), example: {'Authorization': 'Bearer 1234567890'}"
)
# Server 3 (optional)
server3_group = gr.Group(visible=False)
with server3_group:
gr.Markdown("#### Server 3")
server3_url = gr.Textbox(
label="Server URL",
placeholder="http://localhost:8002",
info="The URL of your MCP server"
)
server3_name = gr.Textbox(
label="Server Name",
placeholder="server_3",
info="A friendly name for your MCP server"
)
server3_type = gr.Dropdown(
label="Server Type",
choices=["http", "SSE"],
value="http",
info="The type of MCP server connection"
)
server3_headers = gr.Textbox(
label="Headers (Optional)",
type="password",
placeholder="Leave empty if not required",
info="Headers for the MCP server (if required), example: {'Authorization': 'Bearer 1234567890'}"
)
with gr.Tab("Stdio based servers"):
with gr.Group():
gr.Markdown("#### Server 1")
server1_command = gr.Textbox(
label="Command",
placeholder="npx",
info="The command to use to run the MCP server, docker, npm, python, etc."
)
server1_args = gr.Textbox(
label="Arguments",
placeholder="['-y', '@modelcontextprotocol/server-memory']",
info="The arguments to use to run the MCP server"
)
server1_name = gr.Textbox(
label="Server Name",
placeholder="server_1",
info="A friendly name for your MCP server"
)
# Server management buttons
with gr.Row():
add_server_btn = gr.Button("+ Add Server", variant="secondary", size="sm")
remove_server_btn = gr.Button("- Remove Server", variant="secondary", size="sm", interactive=False)
# Track current server count
server_count_state = gr.State(1)
init_btn = gr.Button("Initialize Agent", variant="primary", size="lg")
init_status = gr.Textbox(label="Status", interactive=False, max_lines=3)
# Main chat area
chat_column = gr.Column(scale=2)
with chat_column:
with gr.Row():
gr.Markdown("## 💬 Chat with your MCP Agent")
config_status = gr.Markdown("", visible=False) # Status when sidebar is collapsed
chat_interface = gr.Column(visible=False)
with chat_interface:
chatbot = gr.Chatbot(
label="Conversation",
height=500,
show_copy_button=True,
avatar_images=("👤", "🤖")
)
with gr.Row():
msg = gr.Textbox(
label="Message",
placeholder="Type your message here...",
scale=4,
lines=2
)
send_btn = gr.Button("Send", variant="primary", scale=1)
error_display = gr.Textbox(
label="Error Messages",
visible=False,
interactive=False
)
with gr.Row():
reset_btn = gr.Button("Reset Conversation", variant="secondary")
disconnect_btn = gr.Button("Disconnect Agent", variant="secondary")
# Placeholder when agent is not initialized
placeholder = gr.Markdown(
"### 👋 Welcome!\n\nPlease configure and initialize your MCP Agent using the sidebar to start chatting.",
visible=True
)
# Server management event handlers
add_server_btn.click(
fn=add_server,
inputs=[server_count_state],
outputs=[server_count_state, server2_group, server3_group, add_server_btn, remove_server_btn]
)
remove_server_btn.click(
fn=remove_server,
inputs=[server_count_state],
outputs=[server_count_state, server2_group, server3_group, add_server_btn, remove_server_btn]
)
# Event handlers
init_btn.click(
fn=initialize_agent_wrapper,
inputs=[
openai_key,
server1_url, server1_name, server1_type, server1_headers,
server2_url, server2_name, server2_type, server2_headers,
server3_url, server3_name, server3_type, server3_headers,
server1_command, server1_args, server1_name
],
outputs=[chat_interface, placeholder, init_status]
)
# Chat functionality
def handle_chat(message):
if not message or not message.strip():
return app_instance.chat_history, "Please provide a message.", ""
return chat_wrapper(message)
send_btn.click(
fn=handle_chat,
inputs=[msg],
outputs=[chatbot, error_display, msg]
).then(
lambda error: gr.update(visible=bool(error)),
inputs=[error_display],
outputs=[error_display]
)
msg.submit(
fn=handle_chat,
inputs=[msg],
outputs=[chatbot, error_display, msg]
).then(
lambda error: gr.update(visible=bool(error)),
inputs=[error_display],
outputs=[error_display]
)
reset_btn.click(
fn=reset_wrapper,
outputs=[chatbot, error_display]
).then(
lambda error: gr.update(visible=bool(error)),
inputs=[error_display],
outputs=[error_display]
)
disconnect_btn.click(
fn=disconnect_wrapper,
outputs=[chatbot, chat_interface, placeholder, init_status]
)
def main():
"""Main entry point for the application"""
demo.launch(
server_name="0.0.0.0",
server_port=7860,
share=False,
show_error=True
)
if __name__ == "__main__":
main()
|