opencrates 3.0.1

Enterprise-grade AI-powered Rust development companion with comprehensive automation, monitoring, and deployment capabilities
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use prometheus::{Counter, Gauge, Histogram, HistogramOpts, Registry};
use std::sync::Arc;

// TODO: document this
// TODO: document this
// TODO: document this
pub struct Metrics {
    // TODO: document this
    // TODO: document this
    pub requests_total: Counter,
    // TODO: document this
    // TODO: document this
    pub request_duration: Histogram,
    // TODO: document this
    // TODO: document this
    pub active_connections: Gauge,
    registry: Arc<Registry>,
}

impl Default for Metrics {
    fn default() -> Self {
        Self::new()
    }
}

impl Metrics {
    // TODO: document this
    // TODO: document this
    // TODO: document this
    // TODO: document this
    pub fn new() -> Self {
        let registry = Arc::new(Registry::new());

        let requests_total = Counter::new("requests_total", "Total number of requests")
            .expect("Failed to create requests_total counter");

        let request_duration_opts =
            HistogramOpts::new("request_duration_seconds", "Request duration")
                .buckets(vec![0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10.0]);
        let request_duration = Histogram::with_opts(request_duration_opts)
            .expect("Failed to create request_duration histogram");

        let active_connections = Gauge::new("active_connections", "Active connections")
            .expect("Failed to create active_connections gauge");

        registry.register(Box::new(requests_total.clone())).unwrap();
        registry
            .register(Box::new(request_duration.clone()))
            .unwrap();
        registry
            .register(Box::new(active_connections.clone()))
            .unwrap();

        Self {
            requests_total,
            request_duration,
            active_connections,
            registry,
        }
    }

    // TODO: document this

    // TODO: document this

    // TODO: document this

    // TODO: document this

    pub fn registry(&self) -> Arc<Registry> {
        self.registry.clone()
    }
}