Added buckets page

LoadBalancerWeb/src/main/java/ru/dragonestia/loadbalancer/web/component/BucketList.java

@@ -92,7 +92,7 @@ public class BucketList extends VerticalLayout {
     private void clickDetailsButton(Bucket bucket) {
         getUI().ifPresent(ui -> {
             ui.navigate("/nodes/" + bucket.getNodeIdentifier() +
-                    "/" + bucket.getIdentifier());
+                    "/buckets/" + bucket.getIdentifier());
         });
     }
 

LoadBalancerWeb/src/main/java/ru/dragonestia/loadbalancer/web/page/BucketsPage.java

@@ -0,0 +1,53 @@
+package ru.dragonestia.loadbalancer.web.page;
+
+import com.vaadin.flow.component.Html;
+import com.vaadin.flow.component.html.H2;
+import com.vaadin.flow.component.html.Hr;
+import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+import com.vaadin.flow.router.BeforeEnterEvent;
+import com.vaadin.flow.router.BeforeEnterObserver;
+import com.vaadin.flow.router.Route;
+import ru.dragonestia.loadbalancer.web.component.NavPath;
+import ru.dragonestia.loadbalancer.web.model.Bucket;
+import ru.dragonestia.loadbalancer.web.model.Node;
+import ru.dragonestia.loadbalancer.web.model.type.LoadBalancingMethod;
+import ru.dragonestia.loadbalancer.web.model.type.SlotLimit;
+
+@Route("/nodes/:nodeId/buckets/:bucketId")
+public class BucketsPage extends VerticalLayout implements BeforeEnterObserver {
+
+    private Bucket bucket;
+
+    @Override
+    public void beforeEnter(BeforeEnterEvent event) {
+        var nodeIdOpt = event.getRouteParameters().get("nodeId");
+        var bucketIdOpt = event.getRouteParameters().get("bucketId");
+
+        if (nodeIdOpt.isEmpty() || bucketIdOpt.isEmpty()) {
+            getUI().ifPresent(ui -> ui.navigate("/nodes"));
+            return;
+        }
+        // TODO: getting bucket
+        bucket = Bucket.create(bucketIdOpt.get(), new Node(nodeIdOpt.get(), LoadBalancingMethod.ROUND_ROBIN), SlotLimit.unlimited(), "");
+
+        init();
+    }
+
+    private void init() {
+        add(new NavPath(new NavPath.Point("Nodes", "/nodes"),
+                new NavPath.Point(bucket.getNodeIdentifier(), "/nodes/" + bucket.getNodeIdentifier()),
+                new NavPath.Point(bucket.getIdentifier(), "/nodes/" + bucket.getNodeIdentifier() + "/buckets/" + bucket.getIdentifier())));
+        add(new H2("Bucket details"));
+        printBucketDetails();
+        add(new Hr());
+        add(new H2("Add users"));
+        add(new Hr());
+        add(new H2("Users"));
+    }
+
+    private void printBucketDetails() {
+        add(new Html("<span>Node identifier: <b>" + bucket.getNodeIdentifier() + "</b></span>"));
+        add(new Html("<span>Bucket identifier: <b>" + bucket.getIdentifier() + "</b></span>"));
+        add(new Html("<span>Slots: <b>" + (bucket.getSlots().isUnlimited()? "Unlimited" : bucket.getSlots().getSlots()) + "</b></span>"));
+    }
+}