kuri 0.1.0

An SDK for building MCP servers, focused on elegant developer experience, where tools and prompts are just plain old Rust functions.
Documentation 
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use crate::transport::TransportError;
use thiserror::Error;

/// Fatal errors which cause the `Server` to terminate.
#[derive(Error, Debug)]
pub enum ServerError {
    #[error("Transport error: {0}")]
    Transport(#[from] TransportError),
}

/// Errors raised while processing a request.
#[derive(Error, Debug)]
pub enum RequestError {
    #[error("Method not found: {0}")]
    MethodNotFound(String),

    #[error("Invalid parameters: {0}")]
    InvalidParams(String),

    #[error("Internal error: {0}")]
    Internal(String),

    #[error("Tool not found: {0}")]
    ToolNotFound(String),

    #[error("Resource not found: {0}")]
    ResourceNotFound(String),

    #[error("Not found: {0}")]
    PromptNotFound(String),

    #[error("This implementation doesn't support message type: {0}")]
    Unsupported(String),
}

/// Request errors can be returned as a `JsonRpcResponse` with the error type.
/// This trait implementation aids conversion of the `RequestError` to an `ErrorData` which can be
/// provided in the `JsonRpcResponse`.
impl From<RequestError> for kuri_mcp_protocol::jsonrpc::ErrorData {
    fn from(err: RequestError) -> Self {
        use kuri_mcp_protocol::jsonrpc::{ErrorCode, ErrorData};
        match err {
            RequestError::MethodNotFound(msg) => ErrorData {
                code: ErrorCode::MethodNotFound,
                message: msg,
                data: None,
            },
            RequestError::InvalidParams(msg) => ErrorData {
                code: ErrorCode::InvalidParams,
                message: msg,
                data: None,
            },
            RequestError::Internal(msg) => ErrorData {
                code: ErrorCode::InternalError,
                message: msg,
                data: None,
            },
            RequestError::ToolNotFound(msg) => ErrorData {
                code: ErrorCode::InvalidRequest,
                message: msg,
                data: None,
            },
            RequestError::ResourceNotFound(msg) => ErrorData {
                code: ErrorCode::InvalidRequest,
                message: msg,
                data: None,
            },
            RequestError::PromptNotFound(msg) => ErrorData {
                code: ErrorCode::InvalidRequest,
                message: msg,
                data: None,
            },
            RequestError::Unsupported(msg) => ErrorData {
                code: ErrorCode::InvalidRequest,
                message: msg,
                data: None,
            },
        }
    }
}

impl From<kuri_mcp_protocol::resource::ResourceError> for RequestError {
    fn from(err: kuri_mcp_protocol::resource::ResourceError) -> Self {
        match err {
            kuri_mcp_protocol::resource::ResourceError::NotFound(msg) => {
                RequestError::ResourceNotFound(msg)
            }
            _ => RequestError::Internal(format!("Unknown resource error: {}", err)),
        }
    }
}