systemprompt-database 0.6.1

PostgreSQL infrastructure for systemprompt.io AI governance. SQLx-backed pool, generic repository traits, and compile-time query verification. Part of the systemprompt.io AI governance pipeline.
Documentation
//! Async repository over the `services` registry table.

use std::sync::Arc;

use sqlx::PgPool;

use super::model::{CreateServiceInput, ServiceConfig};
use crate::DbPool;
use crate::error::DatabaseResult;

#[derive(Debug, Clone)]
pub struct ServiceRepository {
    pool: Arc<PgPool>,
    write_pool: Arc<PgPool>,
}

impl ServiceRepository {
    pub fn new(db: &DbPool) -> DatabaseResult<Self> {
        let pool = db.pool_arc()?;
        let write_pool = db.write_pool_arc()?;
        Ok(Self { pool, write_pool })
    }

    pub async fn get_service_by_name(&self, name: &str) -> DatabaseResult<Option<ServiceConfig>> {
        let row = sqlx::query!(
            r#"
            SELECT name, module_name, status, pid, port, binary_mtime,
                   created_at::text as "created_at!", updated_at::text as "updated_at!"
            FROM services
            WHERE name = $1
            "#,
            name
        )
        .fetch_optional(&*self.pool)
        .await?;

        Ok(row.map(|r| ServiceConfig {
            name: r.name,
            module_name: r.module_name,
            status: r.status,
            pid: r.pid,
            port: r.port,
            binary_mtime: r.binary_mtime,
            created_at: r.created_at,
            updated_at: r.updated_at,
        }))
    }

    pub async fn get_all_agent_service_names(&self) -> DatabaseResult<Vec<String>> {
        let rows = sqlx::query!(r#"SELECT name FROM services WHERE module_name = 'agent'"#)
            .fetch_all(&*self.pool)
            .await?;
        Ok(rows.into_iter().map(|r| r.name).collect())
    }

    pub async fn get_mcp_services(&self) -> DatabaseResult<Vec<ServiceConfig>> {
        let rows = sqlx::query!(
            r#"
            SELECT name, module_name, status, pid, port, binary_mtime,
                   created_at::text as "created_at!", updated_at::text as "updated_at!"
            FROM services
            WHERE module_name = 'mcp'
            ORDER BY name
            "#
        )
        .fetch_all(&*self.pool)
        .await?;
        Ok(rows
            .into_iter()
            .map(|r| ServiceConfig {
                name: r.name,
                module_name: r.module_name,
                status: r.status,
                pid: r.pid,
                port: r.port,
                binary_mtime: r.binary_mtime,
                created_at: r.created_at,
                updated_at: r.updated_at,
            })
            .collect())
    }

    pub async fn create_service(&self, input: CreateServiceInput<'_>) -> DatabaseResult<()> {
        let port_i32 = i32::from(input.port);
        sqlx::query!(
            r#"
            INSERT INTO services (name, module_name, status, port, binary_mtime)
            VALUES ($1, $2, $3, $4, $5)
            ON CONFLICT (name) DO UPDATE SET
              module_name = EXCLUDED.module_name,
              status = EXCLUDED.status,
              port = EXCLUDED.port,
              binary_mtime = EXCLUDED.binary_mtime,
              updated_at = CURRENT_TIMESTAMP
            "#,
            input.name,
            input.module_name,
            input.status,
            port_i32,
            input.binary_mtime
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(())
    }

    pub async fn update_service_status(
        &self,
        service_name: &str,
        status: &str,
    ) -> DatabaseResult<()> {
        sqlx::query!(
            r#"UPDATE services SET status = $1, updated_at = CURRENT_TIMESTAMP WHERE name = $2"#,
            status,
            service_name
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(())
    }

    pub async fn delete_service(&self, service_name: &str) -> DatabaseResult<()> {
        sqlx::query!(r#"DELETE FROM services WHERE name = $1"#, service_name)
            .execute(&*self.write_pool)
            .await?;
        Ok(())
    }

    pub async fn update_service_pid(&self, service_name: &str, pid: i32) -> DatabaseResult<()> {
        sqlx::query!(
            r#"UPDATE services SET pid = $1, updated_at = CURRENT_TIMESTAMP WHERE name = $2"#,
            pid,
            service_name
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(())
    }

    pub async fn clear_service_pid(&self, service_name: &str) -> DatabaseResult<()> {
        sqlx::query!(
            r#"UPDATE services SET pid = NULL, updated_at = CURRENT_TIMESTAMP WHERE name = $1"#,
            service_name
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(())
    }

    pub async fn get_all_running_services(&self) -> DatabaseResult<Vec<ServiceConfig>> {
        let rows = sqlx::query!(
            r#"
            SELECT name, module_name, status, pid, port, binary_mtime,
                   created_at::text as "created_at!", updated_at::text as "updated_at!"
            FROM services
            WHERE status = 'running'
            ORDER BY name
            "#
        )
        .fetch_all(&*self.pool)
        .await?;
        Ok(rows
            .into_iter()
            .map(|r| ServiceConfig {
                name: r.name,
                module_name: r.module_name,
                status: r.status,
                pid: r.pid,
                port: r.port,
                binary_mtime: r.binary_mtime,
                created_at: r.created_at,
                updated_at: r.updated_at,
            })
            .collect())
    }

    pub async fn count_running_services(&self, module_name: &str) -> DatabaseResult<usize> {
        let row = sqlx::query!(
            r#"SELECT COUNT(*) as "count!" FROM services WHERE module_name = $1 AND status = 'running'"#,
            module_name
        )
        .fetch_one(&*self.pool)
        .await?;
        Ok(usize::try_from(row.count).unwrap_or(0))
    }

    pub async fn mark_service_crashed(&self, service_name: &str) -> DatabaseResult<()> {
        sqlx::query!(
            r#"UPDATE services SET status = 'error', pid = NULL, updated_at = CURRENT_TIMESTAMP WHERE name = $1"#,
            service_name
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(())
    }

    pub async fn update_service_stopped(&self, service_name: &str) -> DatabaseResult<()> {
        sqlx::query!(
            r#"UPDATE services SET status = 'stopped', pid = NULL, updated_at = CURRENT_TIMESTAMP WHERE name = $1"#,
            service_name
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(())
    }

    pub async fn get_running_services_with_pid(&self) -> DatabaseResult<Vec<ServiceConfig>> {
        self.get_all_running_services().await
    }

    pub async fn get_services_by_type(
        &self,
        module_name: &str,
    ) -> DatabaseResult<Vec<ServiceConfig>> {
        let rows = sqlx::query!(
            r#"
            SELECT name, module_name, status, pid, port, binary_mtime,
                   created_at::text as "created_at!", updated_at::text as "updated_at!"
            FROM services
            WHERE module_name = $1
            ORDER BY name
            "#,
            module_name
        )
        .fetch_all(&*self.pool)
        .await?;
        Ok(rows
            .into_iter()
            .map(|r| ServiceConfig {
                name: r.name,
                module_name: r.module_name,
                status: r.status,
                pid: r.pid,
                port: r.port,
                binary_mtime: r.binary_mtime,
                created_at: r.created_at,
                updated_at: r.updated_at,
            })
            .collect())
    }

    pub async fn cleanup_stale_entries(&self) -> DatabaseResult<u64> {
        let result = sqlx::query!(
            r#"
            DELETE FROM services
            WHERE status IN ('error', 'crashed')
               OR (status = 'running' AND pid IS NULL)
            "#
        )
        .execute(&*self.write_pool)
        .await?;
        Ok(result.rows_affected())
    }
}