Decoy Fasttrack Drafts

Co-Authored-By: brekotis <93345790+brekotis@users.noreply.github.com>

src/config/hot_reload/diff.rs

@@ -85,6 +85,10 @@ pub(super) fn warn_non_hot_changes(old: &ProxyConfig, new: &ProxyConfig, non_hot
         warned = true;
         warn!("config reload: server listener settings changed; restart required");
     }
+    if old.web.decoy_fasttrack_mode != new.web.decoy_fasttrack_mode {
+        warned = true;
+        warn!("config reload: web.decoy_fasttrack_mode changed; restart required");
+    }
     if old.censorship.tls_domain != new.censorship.tls_domain
         || old.censorship.tls_domains != new.censorship.tls_domains
         || old.censorship.tls_fetch_scope != new.censorship.tls_fetch_scope

src/config/hot_reload/fields.rs

@@ -343,8 +343,10 @@ pub(super) fn overlay_hot_fields(old: &ProxyConfig, new: &ProxyConfig) -> ProxyC
     cfg.access.user_max_unique_ips_mode = new.access.user_max_unique_ips_mode;
     cfg.access.user_max_unique_ips_window_secs = new.access.user_max_unique_ips_window_secs;
     let process_limits = cfg.web.limits.clone();
+    let decoy_fasttrack_mode = cfg.web.decoy_fasttrack_mode;
     cfg.web = new.web.clone();
     cfg.web.limits = process_limits;
+    cfg.web.decoy_fasttrack_mode = decoy_fasttrack_mode;
     if cfg.web.carrier_negotiation_enabled()
         && cfg.web.carrier_learning
         && cfg.web.limits.max_carrier_learning_entries < WEB_CARRIER_LEARNING_MIN_ENTRIES

src/config/hot_reload/tests.rs

@@ -123,6 +123,21 @@ fn web_debug_policy_is_hot_while_debug_capacity_is_process_owned() {
     );
 }
 
+#[test]
+fn decoy_fasttrack_mode_is_deferred_until_restart() {
+    let old = sample_config();
+    let mut new = old.clone();
+    new.web.decoy_fasttrack_mode = crate::config::WebDecoyFastTrackMode::Enforce;
+
+    let applied = overlay_hot_fields(&old, &new);
+
+    assert_eq!(
+        applied.web.decoy_fasttrack_mode,
+        old.web.decoy_fasttrack_mode
+    );
+    assert_eq!(HotFields::from_config(&old), HotFields::from_config(&applied));
+}
+
 #[test]
 fn hot_overlay_defers_learning_that_requires_new_process_capacity() {
     let mut old = sample_config();