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fuel-core 0.9.1

Fuel client.
Documentation 
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use axum::response::IntoResponse;
use hyper::{Body, Request};

pub async fn metrics(_req: Request<Body>) -> impl IntoResponse {
    #[cfg(feature = "prometheus")]
    {
        prometheus_metrics::encode_metrics_response()
    }
    #[cfg(not(feature = "prometheus"))]
    {
        use axum::http::StatusCode;
        (StatusCode::NOT_FOUND, "metrics collection disabled")
    }
}

#[cfg(feature = "prometheus")]
pub mod prometheus_metrics {
    use super::{Body, IntoResponse};
    use hyper::{header::CONTENT_TYPE, Response};
    use lazy_static::lazy_static;
    use prometheus::register_int_counter;
    use prometheus::{self, Encoder, IntCounter, TextEncoder};

    /// DatabaseMetrics is a wrapper struct for all
    /// of the initialized counters for Database-related metrics
    #[derive(Clone, Debug)]
    pub struct DatabaseMetrics {
        pub write_meter: IntCounter,
        pub read_meter: IntCounter,
        pub bytes_written_meter: IntCounter,
        pub bytes_read_meter: IntCounter,
    }

    lazy_static! {
        pub static ref DATABASE_METRICS: DatabaseMetrics = DatabaseMetrics {
            write_meter: register_int_counter!("Writes", "Number of database write operations")
                .unwrap(),
            read_meter: register_int_counter!("Reads", "Number of database read operations")
                .unwrap(),
            bytes_written_meter: register_int_counter!(
                "Bytes_Written",
                "The number of bytes written to the database"
            )
            .unwrap(),
            bytes_read_meter: register_int_counter!(
                "Bytes_Read",
                "The number of bytes read from the database"
            )
            .unwrap(),
        };
    }

    pub fn encode_metrics_response() -> impl IntoResponse {
        let mut buffer = vec![];
        let encoder = TextEncoder::new();
        let metric_families = prometheus::gather();
        encoder.encode(&metric_families, &mut buffer).unwrap();
        Response::builder()
            .status(200)
            .header(CONTENT_TYPE, encoder.format_type())
            .body(Body::from(buffer))
            .unwrap()
    }
}