Add additional span attributes in java

Signed-off-by: Pavol Loffay <[email protected]>

Author: pavolloffay

app/backend2/build.gradle

@@ -15,8 +15,8 @@ repositories {
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	implementation 'org.apache.logging.log4j:log4j-core:2.17.2'
-// 	implementation 'io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations:2.1.0'
-//  	implementation 'io.opentelemetry:opentelemetry-api:1.35.0'
+	implementation 'io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations:2.1.0'
+ 	implementation 'io.opentelemetry:opentelemetry-api:1.35.0'
 }
 
 tasks.named('test') {

app/backend2/src/main/java/io/opentelemetry/dice/RollController.java

@@ -9,10 +9,10 @@
 
 import java.util.Optional;
 
-// import io.opentelemetry.api.trace.Span;
-// import io.opentelemetry.instrumentation.annotations.WithSpan;
-// import io.opentelemetry.instrumentation.annotations.SpanAttribute;
-// import io.opentelemetry.instrumentation.annotations.AddingSpanAttributes;
+import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.instrumentation.annotations.WithSpan;
+import io.opentelemetry.instrumentation.annotations.SpanAttribute;
+import io.opentelemetry.instrumentation.annotations.AddingSpanAttributes;
 
 @RestController
 public class RollController {
@@ -32,6 +32,9 @@ public String index(@RequestParam("player") Optional<String> player) {
 		} else {
 			logger.info("Anonymous player is rolling the dice: " + result);
 		}
+		Span span = Span.current();
+        span.setAttribute("result", result);
+        span.setAttribute("player", player.orElse("Anonymous"));
 		return Integer.toString(result);
 	}