chore: restore metrics it

Author: diegomarquezp

java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelMetrics.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2026 Google LLC
+ * Copyright 2024 Google LLC
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -30,7 +30,6 @@
 
 package com.google.showcase.v1beta1.it;
 
-import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.assertThrows;
 
 import com.google.api.client.http.javanet.NetHttpTransport;
@@ -43,7 +42,9 @@
 import com.google.api.gax.rpc.StatusCode.Code;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.api.gax.rpc.UnavailableException;
-import com.google.api.gax.tracing.*;
+import com.google.api.gax.tracing.MetricsTracer;
+import com.google.api.gax.tracing.MetricsTracerFactory;
+import com.google.api.gax.tracing.OpenTelemetryMetricsRecorder;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
@@ -71,10 +72,6 @@
 import io.opentelemetry.sdk.metrics.data.MetricData;
 import io.opentelemetry.sdk.metrics.data.PointData;
 import io.opentelemetry.sdk.testing.exporter.InMemoryMetricReader;
-import io.opentelemetry.sdk.testing.exporter.InMemorySpanExporter;
-import io.opentelemetry.sdk.trace.SdkTracerProvider;
-import io.opentelemetry.sdk.trace.data.SpanData;
-import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -149,6 +146,7 @@ private OpenTelemetryMetricsRecorder createOtelMetricsRecorder(
       InMemoryMetricReader inMemoryMetricReader) {
     SdkMeterProvider sdkMeterProvider =
         SdkMeterProvider.builder().registerMetricReader(inMemoryMetricReader).build();
+
     OpenTelemetry openTelemetry =
         OpenTelemetrySdk.builder().setMeterProvider(sdkMeterProvider).build();
     return new OpenTelemetryMetricsRecorder(openTelemetry, SERVICE_NAME);
@@ -169,8 +167,6 @@ void setup() throws Exception {
 
   @AfterEach
   void cleanup() throws InterruptedException, IOException {
-    System.clearProperty("GOOGLE_CLOUD_ENABLE_TRACING");
-
     inMemoryMetricReader.close();
     inMemoryMetricReader.shutdown();
 
@@ -923,55 +919,4 @@ void grpcOpenTelemetryImplementation_setSampledToLocalTracing_methodFullNameIsRe
     echoClient.close();
     echoClient.awaitTermination(TestClientInitializer.AWAIT_TERMINATION_SECONDS, TimeUnit.SECONDS);
   }
-
-  @Test
-  void testTracingFeatureFlag() throws Exception {
-    // Test tracing disabled
-    System.setProperty("GOOGLE_CLOUD_ENABLE_TRACING", "false");
-    TracingTracerFactory factory = new TracingTracerFactory(null);
-    ApiTracer tracer =
-        factory.newTracer(
-            BaseApiTracer.getInstance(),
-            SpanName.of("EchoClient", "Echo"),
-            ApiTracerFactory.OperationType.Unary);
-    assertThat(tracer).isNotInstanceOf(TracingTracer.class);
-    assertThat(tracer).isSameInstanceAs(BaseApiTracer.getInstance());
-
-    // Test tracing enabled
-    System.setProperty("GOOGLE_CLOUD_ENABLE_TRACING", "true");
-    tracer =
-        factory.newTracer(
-            BaseApiTracer.getInstance(),
-            SpanName.of("EchoClient", "Echo"),
-            ApiTracerFactory.OperationType.Unary);
-    assertThat(tracer).isInstanceOf(TracingTracer.class);
-
-    // Verify dummy network trace
-    InMemorySpanExporter spanExporter = InMemorySpanExporter.create();
-    SdkTracerProvider tracerProvider =
-        SdkTracerProvider.builder()
-            .addSpanProcessor(SimpleSpanProcessor.create(spanExporter))
-            .build();
-    OpenTelemetry openTelemetry =
-        OpenTelemetrySdk.builder().setTracerProvider(tracerProvider).build();
-
-    OpenTelemetryTracingRecorder tracingRecorder =
-        new OpenTelemetryTracingRecorder(openTelemetry, SERVICE_NAME);
-    TracingTracerFactory tracingTracerFactory = new TracingTracerFactory(tracingRecorder);
-
-    EchoClient grpcClient = TestClientInitializer.createGrpcEchoClientOpentelemetry(tracingTracerFactory);
-    try {
-      grpcClient.echo(EchoRequest.newBuilder().setContent("test").build());
-
-      List<SpanData> spans = spanExporter.getFinishedSpanItems();
-      assertThat(spans).isNotEmpty();
-      Optional<SpanData> t4Span =
-          spans.stream().filter(s -> s.getName().equals("LowLevelNetworkSpan")).findFirst();
-      assertThat(t4Span.isPresent()).isTrue();
-      assertThat(t4Span.get().getKind()).isEqualTo(io.opentelemetry.api.trace.SpanKind.CLIENT);
-    } finally {
-      grpcClient.close();
-      grpcClient.awaitTermination(TestClientInitializer.AWAIT_TERMINATION_SECONDS, TimeUnit.SECONDS);
-    }
-  }
 }