Add JDBC transaction duration metrics (#19003)

Author: trask

instrumentation/jdbc/library/src/main/java/io/opentelemetry/instrumentation/jdbc/internal/JdbcInstrumenterFactory.java

@@ -133,6 +133,7 @@ public static Instrumenter<DbRequest, Void> createTransactionInstrumenter(
             SqlClientAttributesExtractor.builder(new JdbcAttributesGetter()).build())
         .addAttributesExtractor(new TransactionAttributeExtractor())
         .addAttributesExtractors(extractors)
+        .addOperationMetrics(DbClientMetrics.get())
         .setEnabled(enabled)
         .buildInstrumenter(SpanKindExtractor.alwaysClient());
   }

instrumentation/jdbc/library/src/test/java/io/opentelemetry/instrumentation/jdbc/datasource/JdbcTelemetryTest.java

@@ -11,6 +11,7 @@
 import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.equalTo;
 import static io.opentelemetry.semconv.DbAttributes.DB_NAMESPACE;
 import static io.opentelemetry.semconv.DbAttributes.DB_OPERATION_BATCH_SIZE;
+import static io.opentelemetry.semconv.DbAttributes.DB_OPERATION_NAME;
 import static io.opentelemetry.semconv.DbAttributes.DB_QUERY_TEXT;
 import static io.opentelemetry.semconv.DbAttributes.DB_SYSTEM_NAME;
 import static io.opentelemetry.semconv.DbAttributes.DbSystemNameValues.POSTGRESQL;
@@ -203,6 +204,32 @@ void buildWithTransactionInstrumenterEnabled() throws SQLException {
                 span -> span.hasName("ROLLBACK")));
   }
 
+  @Test
+  void transactionMetrics() throws SQLException {
+    JdbcTelemetry telemetry =
+        JdbcTelemetry.builder(testing.getOpenTelemetry())
+            .setTransactionInstrumenterEnabled(true)
+            .build();
+
+    DataSource dataSource = telemetry.wrap(new TestDataSource());
+
+    testing.runWithSpan("parent", () -> dataSource.getConnection().commit());
+
+    testing.waitAndAssertTraces(
+        trace ->
+            trace.hasSpansSatisfyingExactly(
+                span -> span.hasName("parent"), span -> span.hasName("COMMIT")));
+
+    assertDurationMetric(
+        testing,
+        "io.opentelemetry.jdbc",
+        DB_NAMESPACE,
+        DB_OPERATION_NAME,
+        DB_SYSTEM_NAME,
+        SERVER_ADDRESS,
+        SERVER_PORT);
+  }
+
   @Test
   void buildWithSanitizationDisabled() throws SQLException {
     JdbcTelemetry telemetry =