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/*
* Bevy Debugger MCP Server - Proper SDK Implementation
* Copyright (C) 2025 ladvien
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
use rmcp::{model::*, service::server::McpService};
use std::sync::Arc;
use tokio::sync::RwLock;
use tracing::{error, info};
use crate::brp_client::BrpClient;
use crate::config::Config;
use crate::error::Result;
use crate::mcp_tools::BevyDebuggerTools;
/// Proper MCP server implementation using the official SDK
pub struct McpServerV2 {
config: Config,
brp_client: Arc<RwLock<BrpClient>>,
tools: Arc<BevyDebuggerTools>,
}
impl McpServerV2 {
pub fn new(config: Config, brp_client: Arc<RwLock<BrpClient>>) -> Self {
let tools = Arc::new(BevyDebuggerTools::new(brp_client.clone()));
Self {
config,
brp_client,
tools,
}
}
/// Run the server in stdio mode for Claude Code
pub async fn run_stdio(self) -> Result<()> {
info!("Starting MCP server in stdio mode with proper SDK");
// Create server info
let server_info = Implementation {
name: "bevy-debugger-mcp".to_string(),
version: env!("CARGO_PKG_VERSION").to_string(),
};
// Create server capabilities
let capabilities = ServerCapabilities {
experimental: None,
logging: None,
prompts: None,
resources: None,
tools: Some(ToolCapability {
list_changed: None,
}),
};
// Start BRP connection in background
let brp_client = self.brp_client.clone();
tokio::spawn(async move {
loop {
{
let mut client = brp_client.write().await;
if let Err(e) = client.connect_with_retry().await {
error!("Failed to connect to BRP: {}", e);
}
}
tokio::time::sleep(tokio::time::Duration::from_secs(30)).await;
}
});
// Create MCP service with our tools
let service = McpService::builder()
.server_info(server_info)
.capabilities(capabilities)
.tool_handler(self.tools.router())
.build();
// Run the service on stdio
service.stdio_transport().await.map_err(|e| {
error!("MCP server error: {}", e);
crate::error::Error::DebugError(format!("MCP server failed: {}", e))
})?;
Ok(())
}
/// Run the server in TCP mode for background operation
pub async fn run_tcp(self) -> Result<()> {
info!("Starting MCP server in TCP mode on port {}", self.config.mcp_port);
// Create server info
let server_info = Implementation {
name: "bevy-debugger-mcp".to_string(),
version: env!("CARGO_PKG_VERSION").to_string(),
};
// Create server capabilities
let capabilities = ServerCapabilities {
experimental: None,
logging: None,
prompts: None,
resources: None,
tools: Some(ToolCapability {
list_changed: None,
}),
};
// Start BRP connection in background
let brp_client = self.brp_client.clone();
tokio::spawn(async move {
loop {
{
let mut client = brp_client.write().await;
if let Err(e) = client.connect_with_retry().await {
error!("Failed to connect to BRP: {}", e);
}
}
tokio::time::sleep(tokio::time::Duration::from_secs(30)).await;
}
});
// Create MCP service with our tools
let service = McpService::builder()
.server_info(server_info)
.capabilities(capabilities)
.tool_handler(self.tools.router())
.build();
// Run the service on TCP
let addr = format!("127.0.0.1:{}", self.config.mcp_port);
service.tcp_transport(&addr).await.map_err(|e| {
error!("MCP TCP server error: {}", e);
crate::error::Error::DebugError(format!("MCP TCP server failed: {}", e))
})?;
Ok(())
}
}