added: paralell fetch

src/certs.rs

@@ -1,8 +1,8 @@
 use anyhow::Context;
 use ssh_key::{Certificate, PublicKey};
-use std::path::{Path, PathBuf};
+use std::{path::{Path, PathBuf}, fmt::Debug};
 use tokio::fs;
-use tracing::trace;
+use tracing::{trace, instrument};
 
 pub async fn read_certs(
     ca: &PublicKey,
@@ -11,7 +11,8 @@ pub async fn read_certs(
     read_dir(path.as_ref().join(ca_dir(ca))).await
 }
 
-pub async fn read_dir(path: impl AsRef<Path>) -> anyhow::Result<Vec<Certificate>> {
+#[instrument]
+pub async fn read_dir(path: impl AsRef<Path> + Debug) -> anyhow::Result<Vec<Certificate>> {
     let mut dir = fs::read_dir(path.as_ref())
         .await
         .context("read certs dir")?;
@@ -58,13 +59,15 @@ fn ca_dir(ca: &PublicKey) -> String {
     ca.comment().to_string()
 }
 
+#[instrument]
 fn cert_path(ca: &PublicKey, identifier: &str) -> String {
     let _ca_fingerprint = ca.fingerprint(Default::default());
     format!("{}/{}-cert.pub", ca_dir(ca), identifier)
 }
 
+#[instrument]
 pub async fn store_cert(
-    cert_dir: impl AsRef<Path>,
+    cert_dir: impl AsRef<Path> + Debug,
     ca: &PublicKey,
     cert: &Certificate,
 ) -> anyhow::Result<PathBuf> {
@@ -84,6 +87,7 @@ pub async fn load_cert(
 ) -> anyhow::Result<Option<Certificate>> {
     let path = cert_dir.as_ref().join(cert_path(ca, identifier));
     if !path.exists() {
+        trace!("no certificate at {:?}", path);
         return Ok(None);
     }
     let contents = fs::read(&path)