IGNITE-26904 Added data center ID to the ClusterNodeView (#12490)

Author: NSAmelchev

modules/core/src/main/java/org/apache/ignite/spi/systemview/view/ClusterNodeView.java

@@ -95,16 +95,26 @@ public String version() {
      * @return {@code True} if node local.
      * @see ClusterNode#isLocal()
      */
+    @Order(7)
     public boolean isLocal() {
         return n.isLocal();
     }
 
     /**
      * @return {@code True} if node is client.
-     * @see ClusterNode#isClient() ()
+     * @see ClusterNode#isClient()
      */
     @Order(3)
     public boolean isClient() {
         return n.isClient();
     }
+
+    /**
+     * @return Data center ID.
+     * @see ClusterNode#dataCenterId()
+     */
+    @Order(8)
+    public String dataCenterId() {
+        return n.dataCenterId();
+    }
 }

modules/core/src/test/java/org/apache/ignite/internal/metric/SystemViewSelfTest.java

@@ -143,12 +143,14 @@
 import org.apache.ignite.spi.systemview.view.datastructures.SemaphoreView;
 import org.apache.ignite.spi.systemview.view.datastructures.SetView;
 import org.apache.ignite.testframework.GridTestUtils;
+import org.apache.ignite.testframework.junits.WithSystemProperty;
 import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
 import org.apache.ignite.transactions.Transaction;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.junit.Test;
 
+import static org.apache.ignite.IgniteSystemProperties.IGNITE_DATA_CENTER_ID;
 import static org.apache.ignite.configuration.AtomicConfiguration.DFLT_ATOMIC_SEQUENCE_RESERVE_SIZE;
 import static org.apache.ignite.events.EventType.EVT_CONSISTENCY_VIOLATION;
 import static org.apache.ignite.internal.IgniteKernal.CFG_VIEW;
@@ -829,6 +831,7 @@ private void checkContinuousQueryView(IgniteEx g, SystemView<ContinuousQueryView
 
     /** */
     @Test
+    @WithSystemProperty(key = IGNITE_DATA_CENTER_ID, value = "DC0")
     public void testNodes() throws Exception {
         try (IgniteEx g1 = startGrid(0)) {
             SystemView<ClusterNodeView> views = g1.context().systemView().view(NODES_SYS_VIEW);
@@ -840,7 +843,6 @@ public void testNodes() throws Exception {
 
                 checkViewsState(views, g1.localNode(), g2.localNode());
                 checkViewsState(g2.context().systemView().view(NODES_SYS_VIEW), g2.localNode(), g1.localNode());
-
             }
 
             assertEquals(1, views.size());
@@ -962,6 +964,8 @@ private void checkNodeView(ClusterNodeView view, ClusterNode node, boolean isLoc
         assertEquals(node.version().toString(), view.version());
         assertEquals(isLoc, view.isLocal());
         assertEquals(node.isClient(), view.isClient());
+        assertEquals(node.dataCenterId(), view.dataCenterId());
+        assertEquals("DC0", view.dataCenterId());
     }
 
     /** */