From 758fbb91109399671fd5abb072b670b3dfcfede7 Mon Sep 17 00:00:00 2001
From: Sam Freund <techguy763@gmail.com>
Date: Tue, 22 Jul 2025 18:56:32 -0500
Subject: [PATCH] Update metrics publisher hostname when hostname is changed
 (#2008)

---
 .../common/hardware/metrics/MetricsManager.java     | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/photon-core/src/main/java/org/photonvision/common/hardware/metrics/MetricsManager.java b/photon-core/src/main/java/org/photonvision/common/hardware/metrics/MetricsManager.java
index 60b046fc2..b609a2e0d 100644
--- a/photon-core/src/main/java/org/photonvision/common/hardware/metrics/MetricsManager.java
+++ b/photon-core/src/main/java/org/photonvision/common/hardware/metrics/MetricsManager.java
@@ -244,6 +244,19 @@ public class MetricsManager {
 
     public void publishMetrics() {
         logger.debug("Publishing Metrics...");
+
+        // Check that the hostname hasn't changed
+        if (!metricPublisher.getTopic().getName().equals(CameraServerJNI.getHostname())) {
+            logger.warn("Metrics publisher name does not match hostname! Reinitializing publisher...");
+            metricPublisher.close();
+            metricPublisher =
+                    NetworkTablesManager.getInstance()
+                            .kRootTable
+                            .getSubTable("/metrics")
+                            .getProtobufTopic(CameraServerJNI.getHostname(), DeviceMetrics.proto)
+                            .publish();
+        }
+
         var metrics =
                 new DeviceMetrics(
                         this.getCpuTemp(),