Super tiny remove sgl_router_active_workers (#14891)

sgl-model-gateway/src/observability/metrics.rs

@@ -359,10 +359,6 @@ impl RouterMetrics {
         .increment(1);
     }
 
-    pub fn set_active_workers(count: usize) {
-        gauge!("sgl_router_active_workers").set(count as f64);
-    }
-
     pub fn set_worker_health(worker_url: &str, healthy: bool) {
         gauge!("sgl_router_worker_health",
             "worker" => worker_url.to_string()
@@ -928,7 +924,6 @@ mod tests {
         RouterMetrics::record_request_error("/generate", "timeout");
         RouterMetrics::record_retry("/generate");
 
-        RouterMetrics::set_active_workers(5);
         RouterMetrics::set_worker_health("http://worker1", true);
         RouterMetrics::set_worker_load("http://worker1", 10);
         RouterMetrics::record_processed_request("http://worker1");
@@ -1081,9 +1076,6 @@ mod tests {
 
     #[test]
     fn test_extreme_metric_values() {
-        RouterMetrics::set_active_workers(0);
-        RouterMetrics::set_active_workers(usize::MAX);
-
         RouterMetrics::set_worker_load("worker", 0);
         RouterMetrics::set_worker_load("worker", usize::MAX);
 

sgl-model-gateway/src/routers/http/router.rs

@@ -54,16 +54,6 @@ pub struct Router {
 impl Router {
     /// Create a new router with injected policy and client
     pub async fn new(ctx: &Arc<crate::app_context::AppContext>) -> Result<Self, String> {
-        let workers = ctx.worker_registry.get_workers_filtered(
-            None, // any model
-            Some(WorkerType::Regular),
-            Some(ConnectionMode::Http),
-            None,  // any runtime type
-            false, // include all workers
-        );
-
-        RouterMetrics::set_active_workers(workers.len());
-
         Ok(Router {
             worker_registry: ctx.worker_registry.clone(),
             policy_registry: ctx.policy_registry.clone(),