From a1f3a2a0718fd72775ca7c08ddf7168d97a6ac44 Mon Sep 17 00:00:00 2001
From: surbhigarg92 <surbhigarg.92@gmail.com>
Date: Tue, 11 Feb 2025 12:28:05 +0530
Subject: [PATCH] chore: add span cloud region attribute

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

diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/TraceWrapper.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/TraceWrapper.java
index 606a54fe8b7..df5874cb3c6 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/TraceWrapper.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/TraceWrapper.java
@@ -47,6 +47,8 @@ class TraceWrapper {
   private static final AttributeKey<List<String>> DB_STATEMENT_ARRAY_KEY =
       AttributeKey.stringArrayKey("db.statement");
   private static final AttributeKey<String> DB_TABLE_NAME_KEY = AttributeKey.stringKey("db.table");
+  private static final AttributeKey<String> CLOUD_REGION_KEY =
+      AttributeKey.stringKey("cloud.region");
   private static final AttributeKey<String> GCP_CLIENT_SERVICE_KEY =
       AttributeKey.stringKey("gcp.client.service");
   private static final AttributeKey<String> GCP_CLIENT_VERSION_KEY =
@@ -214,6 +216,7 @@ Attributes createCommonAttributes(DatabaseId db) {
     builder.put(GCP_CLIENT_SERVICE_KEY, "spanner");
     builder.put(GCP_CLIENT_REPO_KEY, "googleapis/java-spanner");
     builder.put(GCP_CLIENT_VERSION_KEY, GaxProperties.getLibraryVersion(TraceWrapper.class));
+    builder.put(CLOUD_REGION_KEY, BuiltInMetricsProvider.detectClientLocation());
     return builder.build();
   }