[improve] [broker] Add overrideBrokerNics for adaptation of heterogeneous network environments

pulsar-broker-common/src/main/java/org/apache/pulsar/broker/ServiceConfiguration.java

@@ -2958,7 +2958,11 @@ public double getLoadBalancerBandwidthOutResourceWeight() {
         doc = "Option to override the auto-detected network interfaces max speed"
     )
     private Optional<Double> loadBalancerOverrideBrokerNicSpeedGbps = Optional.empty();
-
+    @FieldContext(
+            category = CATEGORY_LOAD_BALANCER,
+            doc = "Option to override the auto-detected network interfaces"
+    )
+    private List<String> loadBalancerOverrideBrokerNics = new ArrayList<>();
     @FieldContext(
         category = CATEGORY_LOAD_BALANCER,
         dynamic = true,

pulsar-broker/src/main/java/org/apache/pulsar/broker/loadbalance/impl/LinuxBrokerHostUsageImpl.java

@@ -56,23 +56,27 @@ public class LinuxBrokerHostUsageImpl implements BrokerHostUsage {
     private OperatingSystemMXBean systemBean;
     private SystemResourceUsage usage;
     private final Optional<Double> overrideBrokerNicSpeedGbps;
+    private final List<String> overrideBrokerNics;
     private final boolean isCGroupsEnabled;
 
     public LinuxBrokerHostUsageImpl(PulsarService pulsar) {
         this(
             pulsar.getConfiguration().getLoadBalancerHostUsageCheckIntervalMinutes(),
             pulsar.getConfiguration().getLoadBalancerOverrideBrokerNicSpeedGbps(),
+            pulsar.getConfiguration().getLoadBalancerOverrideBrokerNics(),
             pulsar.getLoadManagerExecutor()
         );
     }
 
     public LinuxBrokerHostUsageImpl(int hostUsageCheckIntervalMin,
                                     Optional<Double> overrideBrokerNicSpeedGbps,
+                                    List<String> overrideBrokerNics,
                                     ScheduledExecutorService executorService) {
         this.systemBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
         this.lastCollection = 0L;
         this.usage = new SystemResourceUsage();
         this.overrideBrokerNicSpeedGbps = overrideBrokerNicSpeedGbps;
+        this.overrideBrokerNics = overrideBrokerNics;
         this.isCGroupsEnabled = isCGroupEnabled();
         // Call now to initialize values before the constructor returns
         calculateBrokerHostUsage();
@@ -88,7 +92,7 @@ public SystemResourceUsage getBrokerHostUsage() {
 
     @Override
     public void calculateBrokerHostUsage() {
-        List<String> nics = getUsablePhysicalNICs();
+        List<String> nics = !overrideBrokerNics.isEmpty() ? overrideBrokerNics : getUsablePhysicalNICs();
         double totalNicLimit = getTotalNicLimitWithConfiguration(nics);
         double totalNicUsageTx = getTotalNicUsage(nics, NICUsageType.TX, BitRateUnit.Kilobit);
         double totalNicUsageRx = getTotalNicUsage(nics, NICUsageType.RX, BitRateUnit.Kilobit);

pulsar-broker/src/main/java/org/apache/pulsar/broker/tools/LoadReportCommand.java

@@ -18,6 +18,7 @@
  */
 package org.apache.pulsar.broker.tools;
 
+import java.util.ArrayList;
 import java.util.Optional;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Executors;
@@ -67,7 +68,7 @@ public Integer call() throws Exception {
         try {
             if (isLinux) {
                 hostUsage = new LinuxBrokerHostUsageImpl(
-                    Integer.MAX_VALUE, Optional.empty(), scheduler
+                    Integer.MAX_VALUE, Optional.empty(), new ArrayList<>(), scheduler
                 );
             } else {
                 hostUsage = new GenericBrokerHostUsageImpl(

pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/impl/LinuxBrokerHostUsageImplTest.java

@@ -18,6 +18,9 @@
  */
 package org.apache.pulsar.broker.loadbalance.impl;
 
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
@@ -26,7 +29,11 @@
 import java.util.concurrent.TimeUnit;
 import lombok.Cleanup;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.pulsar.broker.PulsarService;
+import org.apache.pulsar.broker.ServiceConfiguration;
 import org.apache.pulsar.broker.loadbalance.LinuxInfoUtils;
+import org.mockito.MockedStatic;
+import org.mockito.Mockito;
 import org.testng.Assert;
 import org.testng.annotations.Test;
 
@@ -38,7 +45,7 @@ public void checkOverrideBrokerNicSpeedGbps() {
         @Cleanup("shutdown")
         ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
         LinuxBrokerHostUsageImpl linuxBrokerHostUsage =
-                new LinuxBrokerHostUsageImpl(1, Optional.of(3.0), executorService);
+                new LinuxBrokerHostUsageImpl(1, Optional.of(3.0), new ArrayList<>(), executorService);
         List<String> nics = new ArrayList<>();
         nics.add("1");
         nics.add("2");
@@ -47,6 +54,34 @@ public void checkOverrideBrokerNicSpeedGbps() {
         Assert.assertEquals(totalLimit, 3.0 * 1000 * 1000 * 3);
     }
 
+    @Test
+    public void checkOverrideBrokerNics() {
+        try (MockedStatic<LinuxInfoUtils> mockedUtils = Mockito.mockStatic(LinuxInfoUtils.class)) {
+            mockedUtils.when(() -> LinuxInfoUtils.getTotalNicUsage(any(), any(), any())).thenReturn(3.0d);
+            mockedUtils.when(LinuxInfoUtils::getCpuUsageForEntireHost).thenReturn(LinuxInfoUtils.ResourceUsage.empty());
+            List<String> nics = new ArrayList<>();
+            nics.add("1");
+            nics.add("2");
+            nics.add("3");
+            ServiceConfiguration config = new ServiceConfiguration();
+            config.setLoadBalancerOverrideBrokerNicSpeedGbps(Optional.of(3.0d));
+            config.setLoadBalancerOverrideBrokerNics(nics);
+            PulsarService pulsarService = mock(PulsarService.class);
+            when(pulsarService.getConfiguration()).thenReturn(config);
+            @Cleanup("shutdown")
+            ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
+            when(pulsarService.getLoadManagerExecutor()).thenReturn(executorService);
+            LinuxBrokerHostUsageImpl linuxBrokerHostUsage = new LinuxBrokerHostUsageImpl(pulsarService);
+            linuxBrokerHostUsage.calculateBrokerHostUsage();
+            double totalLimit = linuxBrokerHostUsage.getTotalNicLimitWithConfiguration(nics);
+            Assert.assertEquals(totalLimit, 3.0 * 1000 * 1000 * 3);
+            double totalNicLimitRx = linuxBrokerHostUsage.getBrokerHostUsage().getBandwidthIn().limit;
+            double totalNicLimitTx = linuxBrokerHostUsage.getBrokerHostUsage().getBandwidthOut().limit;
+            Assert.assertEquals(totalNicLimitRx, 3.0 * 1000 * 1000 * 3);
+            Assert.assertEquals(totalNicLimitTx, 3.0 * 1000 * 1000 * 3);
+        }
+    }
+
     @Test
     public void testCpuUsage() throws InterruptedException {
         if (!LinuxInfoUtils.isLinux()) {
@@ -56,7 +91,8 @@ public void testCpuUsage() throws InterruptedException {
         @Cleanup("shutdown")
         ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
         LinuxBrokerHostUsageImpl linuxBrokerHostUsage =
-                new LinuxBrokerHostUsageImpl(Integer.MAX_VALUE, Optional.empty(), executorService);
+                new LinuxBrokerHostUsageImpl(Integer.MAX_VALUE, Optional.empty(),
+                        new ArrayList<>(), executorService);
 
         linuxBrokerHostUsage.calculateBrokerHostUsage();
         TimeUnit.SECONDS.sleep(1);