Add simple OTel spans for now.

DataDog · sarahchen6 · Mar 12, 2025 · Feb 23, 2025 · Feb 24, 2025 · Feb 24, 2025
commit 11758ff22b6acb16cce1f9fcb490e7538e3e3628
@@ -8,22 +8,19 @@ apply from: "$rootDir/gradle/java.gradle"
 
 description = 'Concurrent Integration Tests.'
 
-repositories {
-  mavenCentral()
+application {
+  mainClassName = 'datadog.smoketest.concurrent.ConcurrentApp'
 }
 
 dependencies {
+  implementation('io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations:2.13.1')
   implementation project(':dd-trace-api')
   testImplementation project(':dd-smoke-tests')
 
   testImplementation platform('org.junit:junit-bom:5.10.0')
   testImplementation 'org.junit.jupiter:junit-jupiter'
 }
 
-application {
-  mainClassName = 'datadog.smoketest.concurrent.ConcurrentApp'
-}
-
 test {
   useJUnitPlatform()
 }

@@ -1,16 +1,38 @@
 package datadog.smoketest.concurrent;
 
+import io.opentelemetry.api.GlobalOpenTelemetry;
+import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.api.trace.Tracer;
+import io.opentelemetry.instrumentation.annotations.WithSpan;
+
 public class ConcurrentApp {
-  public static void main(String[] args) {
+
+  @WithSpan
+  static void startSpan() {
+    System.out.println("=====startSpan=====");
+  }
+
+  public static void main(String[] args) throws InterruptedException {
     System.out.println("=====ConcurrentApp start=====");
 
+    // start parent span
+    startSpan();
+
+    // get an Open Telemetry tracer
+    Tracer tracer = GlobalOpenTelemetry.getTracerProvider().tracerBuilder("smoketests").build();
+
     // demo ExecutorService
     demoExecutorService.main(args);
 
     // demo ForkJoin
     demoForkJoin.main(args);
 
     // demo custom spans
+    for (int i = 0; i < 10; i++) {
+      Span span = tracer.spanBuilder("span-" + i).startSpan();
+      Thread.sleep(20);
+      span.end();
+    }
 
     // demo something else?
 

@@ -1,5 +1,7 @@
 package datadog.smoketest
 
+import static java.util.concurrent.TimeUnit.SECONDS
+
 class DemoExecutorServiceTest extends AbstractSmokeTest {
   public static final int TIMEOUT_SECS = 30
 
@@ -9,6 +11,7 @@ class DemoExecutorServiceTest extends AbstractSmokeTest {
     def command = new ArrayList<String>()
     command.add(javaPath())
     command.addAll(defaultJavaProperties)
+    command.add("-Ddd.trace.otel.enabled=true")
     command.addAll(["-jar", jarPath])
 
     ProcessBuilder processBuilder = new ProcessBuilder(command)
@@ -19,4 +22,11 @@ class DemoExecutorServiceTest extends AbstractSmokeTest {
     expect:
     assert true == true
   }
+
+  def 'receive trace'() {
+    expect:
+    waitForTraceCount(11) // 1 annotated, 10 manual
+    assert testedProcess.waitFor(TIMEOUT_SECS, SECONDS)
+    assert testedProcess.exitValue() == 0
+  }
 }