mcp_tools/common/
client_base.rs

1//! Base client implementation for MCP Tools
2
3use super::*;
4use crate::{McpToolsError, Result};
5use std::sync::Arc;
6use tokio::sync::RwLock;
7use tracing::{debug, error, info};
8
9/// Base MCP client trait
10#[async_trait::async_trait]
11pub trait McpClientBase: Send + Sync {
12    /// Connect to MCP server
13    async fn connect(&mut self) -> Result<()>;
14
15    /// Disconnect from MCP server
16    async fn disconnect(&mut self) -> Result<()>;
17
18    /// Get server capabilities
19    async fn get_server_capabilities(&self) -> Result<ServerCapabilities>;
20
21    /// Execute tool on server
22    async fn execute_tool(&self, request: McpToolRequest) -> Result<McpToolResponse>;
23
24    /// Get connection status
25    async fn get_status(&self) -> Result<ConnectionStatus>;
26}
27
28/// Base client implementation
29pub struct BaseClient {
30    /// Client configuration
31    config: ClientConfig,
32    /// Connection status
33    status: Arc<RwLock<ConnectionStatus>>,
34    /// Server capabilities cache
35    capabilities: Arc<RwLock<Option<ServerCapabilities>>>,
36}
37
38impl BaseClient {
39    /// Create new base client
40    pub fn new(config: ClientConfig) -> Self {
41        Self {
42            config,
43            status: Arc::new(RwLock::new(ConnectionStatus::Disconnected)),
44            capabilities: Arc::new(RwLock::new(None)),
45        }
46    }
47
48    /// Get client configuration
49    pub fn config(&self) -> &ClientConfig {
50        &self.config
51    }
52
53    /// Set connection status
54    async fn set_status(&self, status: ConnectionStatus) {
55        let mut current_status = self.status.write().await;
56        *current_status = status;
57    }
58
59    /// Cache server capabilities
60    async fn cache_capabilities(&self, capabilities: ServerCapabilities) {
61        let mut cached = self.capabilities.write().await;
62        *cached = Some(capabilities);
63    }
64}
65
66#[async_trait::async_trait]
67impl McpClientBase for BaseClient {
68    async fn connect(&mut self) -> Result<()> {
69        info!("Connecting to MCP server: {}", self.config.server_url);
70
71        self.set_status(ConnectionStatus::Connecting).await;
72
73        // TODO: Implement actual connection logic
74        // For now, simulate connection
75        tokio::time::sleep(tokio::time::Duration::from_millis(100)).await;
76
77        self.set_status(ConnectionStatus::Connected).await;
78        info!("Connected to MCP server successfully");
79
80        Ok(())
81    }
82
83    async fn disconnect(&mut self) -> Result<()> {
84        info!("Disconnecting from MCP server");
85
86        // TODO: Implement actual disconnection logic
87
88        self.set_status(ConnectionStatus::Disconnected).await;
89
90        // Clear cached capabilities
91        let mut cached = self.capabilities.write().await;
92        *cached = None;
93
94        info!("Disconnected from MCP server");
95        Ok(())
96    }
97
98    async fn get_server_capabilities(&self) -> Result<ServerCapabilities> {
99        // Check if we have cached capabilities
100        {
101            let cached = self.capabilities.read().await;
102            if let Some(capabilities) = cached.as_ref() {
103                return Ok(capabilities.clone());
104            }
105        }
106
107        // TODO: Implement actual capability request
108        // For now, return mock capabilities
109        let capabilities = ServerCapabilities {
110            tools: vec![],
111            features: vec!["mock".to_string()],
112            info: ServerInfo {
113                name: "Mock Server".to_string(),
114                version: "1.0.0".to_string(),
115                description: "Mock MCP Server".to_string(),
116                coderlib_version: "0.1.0".to_string(), // TODO: Get from coderlib when available
117                protocol_version: "1.0".to_string(),
118            },
119        };
120
121        self.cache_capabilities(capabilities.clone()).await;
122        Ok(capabilities)
123    }
124
125    async fn execute_tool(&self, request: McpToolRequest) -> Result<McpToolResponse> {
126        debug!("Executing tool: {}", request.tool);
127
128        // Check connection status
129        let status = self.status.read().await;
130        if *status != ConnectionStatus::Connected {
131            return Err(McpToolsError::Client("Not connected to server".to_string()));
132        }
133
134        // TODO: Implement actual tool execution
135        // For now, return mock response
136        Ok(McpToolResponse::error(
137            request.id,
138            "Tool execution not implemented in base client",
139        ))
140    }
141
142    async fn get_status(&self) -> Result<ConnectionStatus> {
143        let status = self.status.read().await;
144        Ok(status.clone())
145    }
146}
147
148#[cfg(test)]
149mod tests {
150    use super::*;
151
152    #[tokio::test]
153    async fn test_base_client_creation() {
154        let config = ClientConfig::default();
155        let client = BaseClient::new(config);
156
157        let status = client.get_status().await.unwrap();
158        assert_eq!(status, ConnectionStatus::Disconnected);
159    }
160
161    #[tokio::test]
162    async fn test_client_connection() {
163        let config = ClientConfig::default();
164        let mut client = BaseClient::new(config);
165
166        client.connect().await.unwrap();
167
168        let status = client.get_status().await.unwrap();
169        assert_eq!(status, ConnectionStatus::Connected);
170
171        client.disconnect().await.unwrap();
172
173        let status = client.get_status().await.unwrap();
174        assert_eq!(status, ConnectionStatus::Disconnected);
175    }
176}
mcp_tools/common/client_base.rs

mcp_tools/common/
client_base.rs
