mcp_core/
tools.rs

1use crate::types::{CallToolRequest, CallToolResponse, Tool};
2use anyhow::Result;
3use std::collections::HashMap;
4use std::future::Future;
5use std::pin::Pin;
6
7pub struct Tools {
8    tool_handlers: HashMap<String, ToolHandler>,
9}
10
11impl Tools {
12    pub(crate) fn new(map: HashMap<String, ToolHandler>) -> Self {
13        Self { tool_handlers: map }
14    }
15
16    pub fn get_tool(&self, name: &str) -> Option<Tool> {
17        self.tool_handlers
18            .get(name)
19            .map(|tool_handler| tool_handler.tool.clone())
20    }
21
22    pub async fn call_tool(&self, req: CallToolRequest) -> Result<CallToolResponse> {
23        let handler = self
24            .tool_handlers
25            .get(&req.name)
26            .ok_or_else(|| anyhow::anyhow!("Tool not found: {}", req.name))?;
27
28        Ok((handler.f)(req).await)
29    }
30
31    pub fn list_tools(&self) -> Vec<Tool> {
32        self.tool_handlers
33            .values()
34            .map(|tool_handler| tool_handler.tool.clone())
35            .collect()
36    }
37}
38
39pub(crate) struct ToolHandler {
40    pub tool: Tool,
41    pub f: Box<
42        dyn Fn(CallToolRequest) -> Pin<Box<dyn Future<Output = CallToolResponse> + Send>>
43            + Send
44            + Sync,
45    >,
46}
mcp_core/tools.rs

mcp_core/
tools.rs
