drogue-bazaar 0.3.0

A place to find tools for building your Rust application
Documentation 
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//! Tools for health checks.

use async_trait::async_trait;

#[derive(Debug, thiserror::Error)]
pub enum HealthCheckError {
    #[error("Health check failed: {0}")]
    Failed(#[from] Box<dyn std::error::Error>),
    #[error("Not OK: {0}")]
    NotOk(String),
}

impl HealthCheckError {
    pub fn from<E>(err: E) -> Self
    where
        E: std::error::Error + 'static,
    {
        Self::Failed(Box::new(err))
    }

    pub fn nok<T, S: Into<String>>(reason: S) -> Result<T, Self> {
        Err(Self::NotOk(reason.into()))
    }
}

#[async_trait]
pub trait HealthChecked: Send + Sync {
    async fn is_ready(&self) -> Result<(), HealthCheckError> {
        Ok(())
    }

    async fn is_alive(&self) -> Result<(), HealthCheckError> {
        Ok(())
    }
}

pub trait BoxedHealthChecked {
    fn boxed(self) -> Box<dyn HealthChecked>;
}

impl<T> BoxedHealthChecked for T
where
    T: HealthChecked + 'static,
{
    fn boxed(self) -> Box<dyn HealthChecked> {
        Box::new(self)
    }
}