metrics-exporter-prometheus: use hyper-rustls (#489)

metrics-exporter-prometheus/Cargo.toml

@@ -22,7 +22,7 @@ async-runtime = ["tokio", "hyper-util/tokio"]
 http-listener = ["async-runtime", "ipnet", "tracing", "_hyper-server"]
 push-gateway = ["async-runtime", "tracing", "_hyper-client"]
 _hyper-server = ["http-body-util", "hyper/server", "hyper-util/server-auto"]
-_hyper-client = ["http-body-util", "hyper/client", "hyper-util/client", "hyper-util/http1", "hyper-util/client-legacy", "hyper-tls"]
+_hyper-client = ["http-body-util", "hyper/client", "hyper-util/client", "hyper-util/http1", "hyper-util/client-legacy", "hyper-rustls"]
 
 [dependencies]
 metrics = { version = "^0.23", path = "../metrics" }
@@ -39,7 +39,7 @@ http-body-util = { version = "0.1.0", optional = true }
 ipnet = { version = "2", optional = true }
 tokio = { version = "1", features = ["rt", "net", "time", "rt-multi-thread"], optional = true }
 tracing = { version = "0.1.26", optional = true }
-hyper-tls = { version = "0.6.0", optional = true }
+hyper-rustls = { version = "0.27.2", optional = true }
 
 [dev-dependencies]
 tracing = "0.1"

metrics-exporter-prometheus/src/exporter/push_gateway.rs

@@ -3,7 +3,6 @@ use std::time::Duration;
 use http_body_util::{BodyExt, Collected, Full};
 use hyper::body::Bytes;
 use hyper::{header::HeaderValue, Method, Request, Uri};
-use hyper_tls::HttpsConnector;
 use hyper_util::{client::legacy::Client, rt::TokioExecutor};
 use tracing::error;
 
@@ -19,7 +18,12 @@ pub(super) fn new_push_gateway(
     handle: PrometheusHandle,
 ) -> ExporterFuture {
     Box::pin(async move {
-        let https = HttpsConnector::new();
+        let https = hyper_rustls::HttpsConnectorBuilder::new()
+            .with_native_roots()
+            .expect("no native root CA certificates found")
+            .https_or_http()
+            .enable_http1()
+            .build();
         let client: Client<_, Full<Bytes>> = Client::builder(TokioExecutor::new())
             .pool_idle_timeout(Duration::from_secs(30))
             .build(https);