Handle lettuce 5.1 db.namespace conditionally based on semconv opt-in

Author: trask

instrumentation/lettuce/lettuce-5.1/library/src/main/java/io/opentelemetry/instrumentation/lettuce/v5_1/OpenTelemetryTracing.java

@@ -313,6 +313,11 @@ public synchronized Tracer.Span tag(String key, String value) {
         argsString = value;
         return this;
       }
+      if (key.equals("db.namespace") && SemconvStability.emitOldDatabaseSemconv()) {
+        key = "db.name";
+      } else if (key.equals("db.name") && SemconvStability.emitStableDatabaseSemconv()) {
+        key = "db.namespace";
+      }
       if (span != null) {
         span.setAttribute(key, value);
       } else {

instrumentation/lettuce/lettuce-5.1/testing/src/main/java/io/opentelemetry/instrumentation/lettuce/v5_1/AbstractLettuceClientTest.java

@@ -5,6 +5,7 @@
 
 package io.opentelemetry.instrumentation.lettuce.v5_1;
 
+import static io.opentelemetry.instrumentation.testing.junit.db.SemconvStabilityUtil.maybeStable;
 import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.equalTo;
 import static io.opentelemetry.semconv.incubating.DbIncubatingAttributes.DB_NAMESPACE;
 
@@ -83,7 +84,7 @@ private ContainerConnection(StatefulRedisConnection<String, String> connection,
   protected static List<AttributeAssertion> addExtraAttributes(AttributeAssertion... assertions) {
     List<AttributeAssertion> result = new ArrayList<>(Arrays.asList(assertions));
     if (Boolean.getBoolean("testLatestDeps")) {
-      result.add(equalTo(DB_NAMESPACE, "0"));
+      result.add(equalTo(maybeStable(DB_NAMESPACE), "0"));
     }
     return result;
   }