Fix discovery: use fetch_events_from with index_relays only

The nostr-sdk pool fetch_events returns empty when most relays are dead.
Target only the known-working index relays for discovery queries.

2 files changed, 12 insertions, 9 deletions

diff --git a/src/discovery.rs b/src/discovery.rs
index 430509d..fa2a198 100644
--- a/src/discovery.rs
+++ b/src/discovery.rs
@@ -17,16 +17,13 @@ pub struct DiscoveredRepo {
 pub async fn discover_repos_from_relays(
     client: &nostr_sdk::Client,
     npubs: &[PublicKey],
-    relay_urls: &[String],
+    index_relays: &[String],
+    all_relay_urls: &[String],
 ) -> Result<Vec<DiscoveredRepo>> {
-    for url in relay_urls {
-        if let Err(e) = client.add_relay(url).await {
-            tracing::warn!(relay = %url, error = %e, "failed to add relay");
-            continue;
-        }
+    for url in all_relay_urls {
+        let _ = client.add_relay(url).await;
     }
     client.connect().await;
-
     client
         .wait_for_connection(std::time::Duration::from_secs(5))
         .await;
@@ -40,7 +37,7 @@ pub async fn discover_repos_from_relays(
             .limit(50);
 
         let events = client
-            .fetch_events(filter, std::time::Duration::from_secs(30))
+            .fetch_events_from(index_relays, filter, std::time::Duration::from_secs(30))
             .await
             .context("failed to fetch events from relays")?;
 
diff --git a/src/main.rs b/src/main.rs
index c7fa23a..d28fbe2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -142,6 +142,7 @@ async fn run_daemon(config: config::ResolvedConfig, db: db::MirrorDb) -> Result<
     let healthy = Arc::new(healthy);
 
     let relay_urls = config.relay_urls();
+    let index_relays = config.discovery.index_relays.clone();
     let nostr_client = build_nostr_client(&relay_urls);
     nostr_client.connect().await;
 
@@ -149,6 +150,7 @@ async fn run_daemon(config: config::ResolvedConfig, db: db::MirrorDb) -> Result<
     let nostr_mirror = nostr_mirror::NostrMirror::new(nostr_client.clone());
 
     let nip46_client_ref: Option<Arc<nip46::Nip46Client>> = nip46_client.clone();
+    let index_relays_ref = Arc::new(index_relays);
 
     let mut interval = tokio::time::interval(std::time::Duration::from_secs(
         config.discovery.poll_interval_secs,
@@ -168,6 +170,7 @@ async fn run_daemon(config: config::ResolvedConfig, db: db::MirrorDb) -> Result<
                     &config,
                     &db,
                     &nostr_client,
+                    &index_relays_ref,
                     &mirror,
                     &nostr_mirror,
                     &healthy,
@@ -197,6 +200,7 @@ async fn mirror_cycle(
     config: &Arc<config::ResolvedConfig>,
     db: &Arc<db::MirrorDb>,
     nostr_client: &nostr_sdk::Client,
+    index_relays: &Arc<Vec<String>>,
     mirror: &git_mirror::GitMirror,
     nostr_mirror: &nostr_mirror::NostrMirror,
     servers: &Arc<Vec<health::GraspServer>>,
@@ -205,7 +209,7 @@ async fn mirror_cycle(
     tracing::info!("starting mirror cycle");
 
     let relay_urls = config.relay_urls();
-    let repos = discovery::discover_repos_from_relays(nostr_client, &config.npubs, &relay_urls)
+    let repos = discovery::discover_repos_from_relays(nostr_client, &config.npubs, index_relays, &relay_urls)
         .await?;
 
     tracing::info!(count = repos.len(), "discovered repos");
@@ -337,6 +341,7 @@ async fn run_mirror_once(config: config::ResolvedConfig, db: db::MirrorDb) -> Re
         .collect();
 
     let relay_urls = config.relay_urls();
+    let index_relays = Arc::new(config.discovery.index_relays.clone());
     let nostr_client = build_nostr_client(&relay_urls);
     nostr_client.connect().await;
 
@@ -348,6 +353,7 @@ async fn run_mirror_once(config: config::ResolvedConfig, db: db::MirrorDb) -> Re
         &config,
         &db,
         &nostr_client,
+        &index_relays,
         &mirror,
         &nostr_mirror,
         &healthy,