Bound federated sync and show progress feedback

core/archipelago/src/api/rpc/federation/handlers.rs

@@ -7,6 +7,8 @@ use crate::mesh;
 use crate::network::dwn_store::DwnStore;
 use crate::nostr_handshake;
 use anyhow::Result;
+use futures_util::stream::{FuturesUnordered, StreamExt};
+use std::sync::Arc;
 use tracing::{debug, info, warn};
 
 const FEDERATION_PROTOCOL: &str = "https://archipelago.dev/protocols/federation/v1";
@@ -460,37 +462,65 @@ impl RpcHandler {
         let identity_dir = self.config.data_dir.join("identity");
         let node_identity = identity::NodeIdentity::load_or_create(&identity_dir).await?;
 
-        let mut synced = 0u32;
+        // A dead Tor peer can take the bounded transport timeout. Serialising
-        let mut failed = 0u32;
+        // those waits made one bad peer block every healthy peer behind it.
-        let mut results = Vec::new();
+        // Keep concurrency bounded so a large federation cannot exhaust the
+        // node's sockets or overwhelm a peer, while allowing healthy peers to
+        // finish independently. Results are tagged and sorted below so the
+        // response remains stable for callers and tests.
+        const MAX_CONCURRENT_SYNCS: usize = 4;
+        let semaphore = Arc::new(tokio::sync::Semaphore::new(MAX_CONCURRENT_SYNCS));
+        let identity = Arc::new(node_identity);
+        let data_dir = self.config.data_dir.clone();
+        let mut pending = FuturesUnordered::new();
 
-        for node in &nodes {
+        for (index, node) in nodes
-            if node.trust_level == TrustLevel::Untrusted {
+            .into_iter()
-                continue;
+            .filter(|node| node.trust_level != TrustLevel::Untrusted)
+            .enumerate()
+        {
+            let data_dir = data_dir.clone();
+            let local_did = local_did.clone();
+            let identity = identity.clone();
+            let semaphore = semaphore.clone();
+            pending.push(async move {
+                let permit = semaphore
+                    .acquire_owned()
+                    .await
+                    .expect("sync semaphore lives for all pending syncs");
+                let result = federation::sync_with_peer(&data_dir, &node, &local_did, |bytes| {
+                    identity.sign(bytes)
+                })
+                .await;
+                drop(permit);
+                (index, node.did, result)
+            });
         }
 
-            let did_clone = local_did.clone();
+        let mut results = Vec::new();
-            match federation::sync_with_peer(&self.config.data_dir, node, &did_clone, |bytes| {
+        while let Some((index, did, result)) = pending.next().await {
-                node_identity.sign(bytes)
+            let row = match result {
-            })
+                Ok(state) => serde_json::json!({
-            .await
+                    "index": index,
-            {
+                    "did": did,
-                Ok(state) => {
-                    synced += 1;
-                    results.push(serde_json::json!({
-                        "did": node.did,
                     "status": "ok",
                     "apps": state.apps.len(),
-                    }));
+                }),
-                }
+                Err(e) => serde_json::json!({
-                Err(e) => {
+                    "index": index,
-                    failed += 1;
+                    "did": did,
-                    results.push(serde_json::json!({
-                        "did": node.did,
                     "status": "error",
                     "error": e.to_string(),
-                    }));
+                }),
+            };
+            results.push(row);
         }
+        results.sort_by_key(|row| row["index"].as_u64().unwrap_or(u64::MAX));
+        let synced = results.iter().filter(|row| row["status"] == "ok").count() as u32;
+        let failed = results.len() as u32 - synced;
+        for row in &mut results {
+            if let Some(object) = row.as_object_mut() {
+                object.remove("index");
             }
         }
 

docs/post-1.9.0-work-backlog.md

@@ -311,6 +311,20 @@ must use a qualified private delivery path; do not republish the demo image.
 - Keep catalog and player integration within the Yaya-only demo scope until
   separately approved for general release.
 
+## Federated Nodes state sync reliability and progress
+
+- Federated Nodes sync currently gives too little feedback and can take a long
+  time when one peer is unreachable. Show an accessible spinner, the number of
+  eligible nodes, current phase and a clear success/partial-failure result.
+- Bound concurrent peer syncs so one slow or dead peer cannot serialize the
+  entire federation refresh. Prefer the authenticated FIPS route when
+  available, preserve the existing bounded fallback, and keep per-peer errors
+  visible without discarding successful results.
+- Keep sync state convergent across retries and reconnects; prevent duplicate
+  clicks, stale responses or an incomplete refresh from looking like success.
+  Qualify healthy, slow, offline, mixed-transport, large-federation and mobile
+  layouts before acceptance.
+
 ## 14. FIPS media transport requirement
 
 - Operator explicitly requires FIPS for streaming peer files and distributed

neode-ui/src/views/Federation.vue

@@ -62,6 +62,7 @@
         :invite-type="inviteType"
         :invite-code="inviteCode"
         :syncing="syncing"
+        :sync-node-count="syncableNodeCount"
         @generate-invite="handleGenerateInvite"
         @show-join="showJoinModal = true"
         @sync="syncAll"
@@ -313,6 +314,7 @@ const joinSuccess = ref(false)
 
 const syncing = ref(false)
 const syncResults = ref<SyncResult[]>([])
+const syncableNodeCount = computed(() => nodes.value.filter(node => node.trust_level !== 'untrusted').length)
 
 const deploying = ref(false)
 const deployResult = ref('')

neode-ui/src/views/federation/QuickActions.vue

@@ -74,11 +74,16 @@
             </div>
           </div>
           <button
+            data-testid="federation-sync-button"
             @click="$emit('sync')"
             class="w-full sm:w-fit px-3 py-1.5 glass-button glass-button-sm rounded text-xs font-medium text-white/90 hover:text-white transition-colors disabled:opacity-50"
             :disabled="syncing"
           >
-            {{ syncing ? 'Syncing...' : 'Sync Now' }}
+            <span v-if="syncing" class="inline-flex items-center gap-2" role="status" aria-live="polite">
+              <span class="w-3 h-3 border-2 border-white/30 border-t-white rounded-full animate-spin" aria-hidden="true"></span>
+              Syncing {{ syncNodeCount }} node{{ syncNodeCount === 1 ? '' : 's' }}…
+            </span>
+            <span v-else>Sync Now</span>
           </button>
         </div>
       </div>
@@ -121,6 +126,7 @@ const props = defineProps<{
   inviteType: 'trusted' | 'observer'
   inviteCode: string
   syncing: boolean
+  syncNodeCount: number
 }>()
 
 defineEmits<{

neode-ui/src/views/federation/__tests__/QuickActions.test.ts

@@ -0,0 +1,38 @@
+import { mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+import QuickActions from '../QuickActions.vue'
+
+describe('QuickActions federation sync', () => {
+  it('shows bounded progress context while sync is running', () => {
+    const wrapper = mount(QuickActions, {
+      props: {
+        generatingInvite: false,
+        inviteType: 'trusted',
+        inviteCode: '',
+        syncing: true,
+        syncNodeCount: 3,
+      },
+    })
+
+    const button = wrapper.get('[data-testid="federation-sync-button"]')
+    expect(button.attributes('disabled')).toBeDefined()
+    const status = button.get('[role="status"]')
+    expect(status.attributes('aria-live')).toBe('polite')
+    expect(status.text()).toContain('Syncing 3 nodes')
+    expect(status.find('.animate-spin').exists()).toBe(true)
+  })
+
+  it('keeps the action concise for a single node', () => {
+    const wrapper = mount(QuickActions, {
+      props: {
+        generatingInvite: false,
+        inviteType: 'trusted',
+        inviteCode: '',
+        syncing: true,
+        syncNodeCount: 1,
+      },
+    })
+
+    expect(wrapper.get('[data-testid="federation-sync-button"]').text()).toContain('Syncing 1 node…')
+  })
+})