update metrics publisher hostname when hostname is changed

Author: samfreund

photon-core/src/main/java/org/photonvision/common/hardware/metrics/MetricsManager.java

@@ -17,7 +17,6 @@
 
 package org.photonvision.common.hardware.metrics;
 
-import edu.wpi.first.cscore.CameraServerJNI;
 import edu.wpi.first.networktables.ProtobufPublisher;
 import java.io.PrintWriter;
 import java.io.StringWriter;
@@ -47,7 +46,9 @@ public class MetricsManager {
             NetworkTablesManager.getInstance()
                     .kCoprocTable
                     .getSubTable("/metrics")
-                    .getProtobufTopic(CameraServerJNI.getHostname(), DeviceMetrics.proto)
+                    .getProtobufTopic(
+                            ConfigManager.getInstance().getConfig().getNetworkConfig().hostname,
+                            DeviceMetrics.proto)
                     .publish();
 
     private final ShellExec runCommand = new ShellExec(true, true);
@@ -244,6 +245,24 @@ public double getUptime() {
 
     public void publishMetrics() {
         logger.debug("Publishing Metrics...");
+
+        // Check that the hostname hasn't changed
+        if (!metricPublisher
+                .getTopic()
+                .getName()
+                .equals(ConfigManager.getInstance().getConfig().getNetworkConfig().hostname)) {
+            logger.warn("Metrics publisher name does not match hostname! Reinitializing publisher...");
+            metricPublisher.close();
+            metricPublisher =
+                    NetworkTablesManager.getInstance()
+                            .kCoprocTable
+                            .getSubTable("/metrics")
+                            .getProtobufTopic(
+                                    ConfigManager.getInstance().getConfig().getNetworkConfig().hostname,
+                                    DeviceMetrics.proto)
+                            .publish();
+        }
+
         var metrics =
                 new DeviceMetrics(
                         this.getCpuTemp(),