span stacktraces config (without aligning with upstream)

README.md

@@ -69,7 +69,10 @@ The agent captures the stacktraces of spans to help identify code paths that tri
 
 The stacktrace is stored in the [`code.stacktrace`](https://opentelemetry.io/docs/specs/semconv/attributes-registry/code/) attribute.
 
-The minimum span duration can be configured with `elastic.otel.span.stack.trace.min.duration` (in milliseconds, defaults to 5ms).
+The minimum span duration can be configured with `elastic.otel.java.span-stacktrace.min.duration`  (defaults to `5ms`).
+
+Implementation has been contributed upstream in the [opentelemetry-java-contrib](https://github.com/open-telemetry/opentelemetry-java-contrib) repository,
+in the [`span-stacktrace`](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/span-stacktrace) folder.
 
 ### Runtime metrics
 

custom/src/main/java/co/elastic/otel/SpanStackTraceProcessorAutoConfig.java

@@ -29,7 +29,8 @@
 @AutoService(ChainingSpanProcessorAutoConfiguration.class)
 public class SpanStackTraceProcessorAutoConfig implements ChainingSpanProcessorAutoConfiguration {
 
-  static final String MIN_DURATION_CONFIG_OPTION = "elastic.otel.span.stack.trace.min.duration";
+  // TODO replace this with upstream config once it's stable
+  static final String MIN_DURATION_CONFIG_OPTION = "elastic.otel.java.span-stacktrace.min.duration";
 
   @Override
   public void registerSpanProcessors(

docs/configure.md

@@ -91,7 +91,6 @@ EDOT Java includes several OpenTelemetry extensions from the [OpenTelemetry Java
 |---|---|---|
 | `OTEL_SERVICE_NAME` | [Resource providers](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/resource-providers) | This can be [set as usual](https://opentelemetry.io/docs/languages/sdk-configuration/general/#otel_service_name), but if not set the value will be inferred when the EDOT Java agent is running in various application servers. |
 | `OTEL_INFERRED_SPANS_*` | [Inferred Spans](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/inferred-spans) | Generates additional spans using profiling instead of instrumentation. |
-| `OTEL_SPAN_STACK_TRACE_MIN_DURATION` | [Span stacktrace capture](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/span-stacktrace) | Define the minimum duration (in milliseconds) for attaching stack traces to spans. Defaults to 5ms. |
 
 ### Configuration options that are _only_ available in EDOT Java
 
@@ -110,6 +109,7 @@ _Currently there are no additional `OTEL_` options waiting to be contributed ups
 | Option(s) | Extension | Description |
 |---|---|---|
 | `ELASTIC_OTEL_UNIVERSAL_PROFILING_INTEGRATION_*` | [Universal profiling integration](https://github.com/elastic/elastic-otel-java/tree/main/universal-profiling-integration) | Correlates traces with profiling data from the Elastic universal profiler. |
+| `ELASTIC_OTEL_JAVA_SPAN_STACKTRACE_MIN_DURATION` | [Span stacktrace capture](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/span-stacktrace) | Define the minimum duration for attaching stack traces to spans. Defaults to 5ms. |
 
 <!-- ✅ List auth methods -->
 ## Authentication methods

inferred-spans/README.md

@@ -56,8 +56,7 @@ SdkTracerProvider tracerProvider = SdkTracerProvider.builder()
   .addSpanProcessor(BatchSpanProcessor.builder(OtlpGrpcSpanExporter.builder()
     .setEndpoint("https://<clusterid>.apm.europe-west3.gcp.cloud.es.io:443")
     .addHeader("Authorization", "Bearer <secrettoken>>")
-    .build()))
-  .build();
+    .build())).build();
 inferredSpans.setTracerProvider(tracerProvider);
 ```
 

smoke-tests/src/test/java/com/example/javaagent/smoketest/AgentFeaturesSmokeTest.java

@@ -33,7 +33,7 @@ class AgentFeaturesSmokeTest extends TestAppSmokeTest {
   @BeforeAll
   public static void start() {
     startTestApp(
-        (container) -> container.addEnv("ELASTIC_OTEL_SPAN_STACK_TRACE_MIN_DURATION", "0ms"));
+        (container) -> container.addEnv("ELASTIC_OTEL_JAVA_SPAN_STACKTRACE_MIN_DURATION", "0ms"));
   }
 
   @AfterAll