systemprompt-mcp 0.14.0

Native Model Context Protocol (MCP) implementation for systemprompt.io. Orchestration, per-server OAuth2, RBAC middleware, and tool-call governance — the core of the AI governance pipeline.
Documentation 
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use crate::error::McpDomainResult;
use std::net::TcpStream;
use std::time::Duration;
use systemprompt_database::ServiceRepository;

#[derive(Debug)]
pub struct ProxyHealthCheck {
    service_repo: ServiceRepository,
}

impl ProxyHealthCheck {
    pub fn new(db_pool: &systemprompt_database::DbPool) -> McpDomainResult<Self> {
        Ok(Self {
            service_repo: ServiceRepository::new(db_pool)?,
        })
    }

    pub async fn can_route_traffic(&self, service_name: &str, port: u16) -> McpDomainResult<bool> {
        let Some(service) = self.service_repo.get_service_by_name(service_name).await? else {
            return Ok(false);
        };

        if service.status != "running" {
            return Ok(false);
        }

        if !Self::is_port_responsive(port) {
            self.service_repo
                .update_service_status(service_name, "stopped")
                .await?;
            return Ok(false);
        }

        if !Self::can_connect_mcp(port).await {
            self.service_repo
                .update_service_status(service_name, "error")
                .await?;
            return Ok(false);
        }

        Ok(true)
    }

    fn is_port_responsive(port: u16) -> bool {
        TcpStream::connect_timeout(
            &std::net::SocketAddr::from(([127, 0, 0, 1], port)),
            Duration::from_millis(100),
        )
        .is_ok()
    }

    async fn can_connect_mcp(port: u16) -> bool {
        use crate::services::client::validate_connection;

        match tokio::time::timeout(
            Duration::from_millis(500),
            validate_connection("proxy_check", "127.0.0.1", port),
        )
        .await
        {
            Ok(Ok(result)) => result.success || result.validation_type == "auth_required",
            _ => false,
        }
    }

    pub async fn get_routable_services(&self) -> McpDomainResult<Vec<RoutableService>> {
        let running_services = self.service_repo.get_all_running_services().await?;

        let mut routable = Vec::new();

        for service in running_services {
            let port = Self::parse_port_from_service(&service);
            if Self::is_port_responsive(port) {
                routable.push(RoutableService {
                    name: service.name.clone(),
                    port,
                    pid: service.pid,
                    health: "healthy".to_owned(),
                });
            } else {
                self.service_repo
                    .update_service_status(&service.name, "stopped")
                    .await?;
            }
        }

        Ok(routable)
    }

    const fn parse_port_from_service(service: &systemprompt_database::ServiceConfig) -> u16 {
        service.port as u16
    }
}

#[derive(Debug, Clone)]
pub struct RoutableService {
    pub name: String,
    pub port: u16,
    pub pid: Option<i32>,
    pub health: String,
}