From 41266a3e1a3e3343b399cc84972455c7fac7c9be Mon Sep 17 00:00:00 2001
From: Hailong Wen <hailongwen@google.com>
Date: Thu, 13 Nov 2025 08:07:16 +0000
Subject: [PATCH] feat: Add grpc.xds.resource_type label to xDS client metrics

---
 .../java/com/google/cloud/spanner/BuiltInMetricsConstant.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/BuiltInMetricsConstant.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/BuiltInMetricsConstant.java
index 8d4abba533d..bd78149465f 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/BuiltInMetricsConstant.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/BuiltInMetricsConstant.java
@@ -99,6 +99,8 @@ public class BuiltInMetricsConstant {
   public static final AttributeKey<String> DIRECT_PATH_USED_KEY =
       AttributeKey.stringKey("directpath_used");
   public static final AttributeKey<String> REQUEST_ID_KEY = AttributeKey.stringKey(REQUEST_ID);
+  public static final AttributeKey<String> GRPC_XDS_RESOURCE_TYPE_KEY =
+      AttributeKey.stringKey("grpc.xds.resource_type");
   public static Set<String> ALLOWED_EXEMPLARS_ATTRIBUTES = new HashSet<>(Arrays.asList(REQUEST_ID));
 
   // IP address prefixes allocated for DirectPath backends.
@@ -232,6 +234,7 @@ private static void defineGRPCView(ImmutableMap.Builder<InstrumentSelector, View
               .map(AttributeKey::getKey)
               .collect(Collectors.toSet());
       attributesFilter.addAll(BuiltInMetricsConstant.GRPC_LB_RLS_ATTRIBUTES);
+      attributesFilter.add(BuiltInMetricsConstant.GRPC_XDS_RESOURCE_TYPE_KEY.getKey());
 
       View view =
           View.builder()