Use HTTP instead of non-known method in http span name (#9441)

Co-authored-by: Mateusz Rzeszutek <mrzeszutek@splunk.com>
open-telemetry · Sep 13, 2023 · d157b68 · d157b68
1 parent 2d505eb
commit d157b68
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Showing 59 changed files with 301 additions and 77 deletions.
diff --git a/...in/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpSpanNameExtractor.java b/...in/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpSpanNameExtractor.java
@@ -6,6 +6,8 @@
 package io.opentelemetry.instrumentation.api.instrumenter.http;
 
 import io.opentelemetry.instrumentation.api.instrumenter.SpanNameExtractor;
+import java.util.HashSet;
+import java.util.Set;
 import javax.annotation.Nullable;
 
 /**
@@ -17,25 +19,39 @@
 public final class HttpSpanNameExtractor<REQUEST> implements SpanNameExtractor<REQUEST> {
 
   /**
-   * Returns a {@link SpanNameExtractor} which should be used for HTTP requests. HTTP attributes
-   * will be examined to determine the name of the span.
+   * Returns a {@link SpanNameExtractor} which should be used for HTTP requests with default
+   * configuration. HTTP attributes will be examined to determine the name of the span.
    */
   public static <REQUEST> SpanNameExtractor<REQUEST> create(
       HttpCommonAttributesGetter<REQUEST, ?> getter) {
-    return new HttpSpanNameExtractor<>(getter);
+    return builder(getter).build();
+  }
+
+  /**
+   * Returns a new {@link HttpSpanNameExtractorBuilder} that can be used to configure the HTTP span
+   * name extractor.
+   */
+  public static <REQUEST> HttpSpanNameExtractorBuilder<REQUEST> builder(
+      HttpCommonAttributesGetter<REQUEST, ?> getter) {
+    return new HttpSpanNameExtractorBuilder<>(getter);
   }
 
   private final HttpCommonAttributesGetter<REQUEST, ?> getter;
+  private final Set<String> knownMethods;
 
-  private HttpSpanNameExtractor(HttpCommonAttributesGetter<REQUEST, ?> getter) {
-    this.getter = getter;
+  HttpSpanNameExtractor(HttpSpanNameExtractorBuilder<REQUEST> builder) {
+    this.getter = builder.httpAttributesGetter;
+    this.knownMethods = new HashSet<>(builder.knownMethods);
   }
 
   @Override
   public String extract(REQUEST request) {
     String method = getter.getHttpRequestMethod(request);
     String route = extractRoute(request);
     if (method != null) {
+      if (!knownMethods.contains(method)) {
+        method = "HTTP";
+      }
       return route == null ? method : method + " " + route;
     }
     return "HTTP";

diff --git a/.../io/opentelemetry/instrumentation/api/instrumenter/http/HttpSpanNameExtractorBuilder.java b/.../io/opentelemetry/instrumentation/api/instrumenter/http/HttpSpanNameExtractorBuilder.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.instrumentation.api.instrumenter.http;
+
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import io.opentelemetry.instrumentation.api.instrumenter.SpanNameExtractor;
+import io.opentelemetry.instrumentation.api.internal.HttpConstants;
+import java.util.HashSet;
+import java.util.Set;
+
+/** A builder of {@link HttpSpanNameExtractor}. */
+public final class HttpSpanNameExtractorBuilder<REQUEST> {
+
+  final HttpCommonAttributesGetter<REQUEST, ?> httpAttributesGetter;
+  Set<String> knownMethods = HttpConstants.KNOWN_METHODS;
+
+  HttpSpanNameExtractorBuilder(HttpCommonAttributesGetter<REQUEST, ?> httpAttributesGetter) {
+    this.httpAttributesGetter = httpAttributesGetter;
+  }
+
+  /**
+   * Configures the extractor to recognize an alternative set of HTTP request methods.
+   *
+   * <p>By default, this extractor defines "known" methods as the ones listed in <a
+   * href="https://www.rfc-editor.org/rfc/rfc9110.html#name-methods">RFC9110</a> and the PATCH
+   * method defined in <a href="https://www.rfc-editor.org/rfc/rfc5789.html">RFC5789</a>. If an
+   * unknown method is encountered, the extractor will use the value {@value HttpConstants#_OTHER}
+   * instead of it and put the original value in an extra {@code http.request.method_original}
+   * attribute.
+   *
+   * <p>Note: calling this method <b>overrides</b> the default known method sets completely; it does
+   * not supplement it.
+   *
+   * @param knownMethods A set of recognized HTTP request methods.
+   */
+  @CanIgnoreReturnValue
+  public HttpSpanNameExtractorBuilder<REQUEST> setKnownMethods(Set<String> knownMethods) {
+    this.knownMethods = new HashSet<>(knownMethods);
+    return this;
+  }
+
+  /**
+   * Returns a new {@link HttpSpanNameExtractor} with the settings of this {@link
+   * HttpSpanNameExtractorBuilder}.
+   */
+  public SpanNameExtractor<REQUEST> build() {
+    return new HttpSpanNameExtractor<>(this);
+  }
+}
diff --git a/.../io/opentelemetry/javaagent/instrumentation/akkahttp/client/AkkaHttpClientSingletons.java b/.../io/opentelemetry/javaagent/instrumentation/akkahttp/client/AkkaHttpClientSingletons.java
@@ -32,7 +32,9 @@ public class AkkaHttpClientSingletons {
         Instrumenter.<HttpRequest, HttpResponse>builder(
                 GlobalOpenTelemetry.get(),
                 AkkaHttpUtil.instrumentationName(),
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/.../io/opentelemetry/javaagent/instrumentation/akkahttp/server/AkkaHttpServerSingletons.java b/.../io/opentelemetry/javaagent/instrumentation/akkahttp/server/AkkaHttpServerSingletons.java
@@ -29,7 +29,9 @@ public final class AkkaHttpServerSingletons {
         Instrumenter.<HttpRequest, HttpResponse>builder(
                 GlobalOpenTelemetry.get(),
                 AkkaHttpUtil.instrumentationName(),
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpServerAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...etry/javaagent/instrumentation/apachehttpasyncclient/ApacheHttpAsyncClientSingletons.java b/...etry/javaagent/instrumentation/apachehttpasyncclient/ApacheHttpAsyncClientSingletons.java
@@ -30,7 +30,9 @@ public final class ApacheHttpAsyncClientSingletons {
         Instrumenter.<ApacheHttpClientRequest, HttpResponse>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...telemetry/javaagent/instrumentation/apachehttpclient/v2_0/ApacheHttpClientSingletons.java b/...telemetry/javaagent/instrumentation/apachehttpclient/v2_0/ApacheHttpClientSingletons.java
@@ -30,7 +30,9 @@ public final class ApacheHttpClientSingletons {
         Instrumenter.<HttpMethod, HttpMethod>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...telemetry/javaagent/instrumentation/apachehttpclient/v4_0/ApacheHttpClientSingletons.java b/...telemetry/javaagent/instrumentation/apachehttpclient/v4_0/ApacheHttpClientSingletons.java
@@ -30,7 +30,9 @@ public final class ApacheHttpClientSingletons {
         Instrumenter.<ApacheHttpClientRequest, HttpResponse>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...opentelemetry/instrumentation/apachehttpclient/v4_3/ApacheHttpClientTelemetryBuilder.java b/...opentelemetry/instrumentation/apachehttpclient/v4_3/ApacheHttpClientTelemetryBuilder.java
@@ -16,6 +16,7 @@
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpClientExperimentalMetrics;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpClientMetrics;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractor;
+import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractorBuilder;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanStatusExtractor;
 import java.util.ArrayList;
 import java.util.List;
@@ -34,6 +35,8 @@ public final class ApacheHttpClientTelemetryBuilder {
   private final HttpClientAttributesExtractorBuilder<ApacheHttpClientRequest, HttpResponse>
       httpAttributesExtractorBuilder =
           HttpClientAttributesExtractor.builder(ApacheHttpClientHttpAttributesGetter.INSTANCE);
+  private final HttpSpanNameExtractorBuilder<ApacheHttpClientRequest> httpSpanNameExtractorBuilder =
+      HttpSpanNameExtractor.builder(ApacheHttpClientHttpAttributesGetter.INSTANCE);
   private boolean emitExperimentalHttpClientMetrics = false;
 
   ApacheHttpClientTelemetryBuilder(OpenTelemetry openTelemetry) {
@@ -90,6 +93,7 @@ public ApacheHttpClientTelemetryBuilder setCapturedResponseHeaders(List<String>
   @CanIgnoreReturnValue
   public ApacheHttpClientTelemetryBuilder setKnownMethods(Set<String> knownMethods) {
     httpAttributesExtractorBuilder.setKnownMethods(knownMethods);
+    httpSpanNameExtractorBuilder.setKnownMethods(knownMethods);
     return this;
   }
 
@@ -116,9 +120,7 @@ public ApacheHttpClientTelemetry build() {
 
     InstrumenterBuilder<ApacheHttpClientRequest, HttpResponse> builder =
         Instrumenter.<ApacheHttpClientRequest, HttpResponse>builder(
-                openTelemetry,
-                INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                openTelemetry, INSTRUMENTATION_NAME, httpSpanNameExtractorBuilder.build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(httpAttributesExtractorBuilder.build())
             .addAttributesExtractors(additionalExtractors)

diff --git a/...telemetry/javaagent/instrumentation/apachehttpclient/v5_0/ApacheHttpClientSingletons.java b/...telemetry/javaagent/instrumentation/apachehttpclient/v5_0/ApacheHttpClientSingletons.java
@@ -31,7 +31,9 @@ public final class ApacheHttpClientSingletons {
         Instrumenter.<HttpRequest, HttpResponse>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/.../src/main/java/io/opentelemetry/instrumentation/armeria/v1_3/ArmeriaTelemetryBuilder.java b/.../src/main/java/io/opentelemetry/instrumentation/armeria/v1_3/ArmeriaTelemetryBuilder.java
@@ -25,6 +25,7 @@
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpServerMetrics;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpServerRoute;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractor;
+import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractorBuilder;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanStatusExtractor;
 import io.opentelemetry.instrumentation.armeria.v1_3.internal.ArmeriaHttpClientAttributesGetter;
 import io.opentelemetry.semconv.trace.attributes.SemanticAttributes;
@@ -56,6 +57,11 @@ public final class ArmeriaTelemetryBuilder {
       httpServerAttributesExtractorBuilder =
           HttpServerAttributesExtractor.builder(ArmeriaHttpServerAttributesGetter.INSTANCE);
 
+  private final HttpSpanNameExtractorBuilder<RequestContext> httpClientSpanNameExtractorBuilder =
+      HttpSpanNameExtractor.builder(ArmeriaHttpClientAttributesGetter.INSTANCE);
+  private final HttpSpanNameExtractorBuilder<RequestContext> httpServerSpanNameExtractorBuilder =
+      HttpSpanNameExtractor.builder(ArmeriaHttpServerAttributesGetter.INSTANCE);
+
   private Function<
           SpanStatusExtractor<RequestContext, RequestLog>,
           ? extends SpanStatusExtractor<? super RequestContext, ? super RequestLog>>
@@ -167,6 +173,8 @@ public ArmeriaTelemetryBuilder setCapturedServerResponseHeaders(List<String> res
   public ArmeriaTelemetryBuilder setKnownMethods(Set<String> knownMethods) {
     httpClientAttributesExtractorBuilder.setKnownMethods(knownMethods);
     httpServerAttributesExtractorBuilder.setKnownMethods(knownMethods);
+    httpClientSpanNameExtractorBuilder.setKnownMethods(knownMethods);
+    httpServerSpanNameExtractorBuilder.setKnownMethods(knownMethods);
     return this;
   }
 
@@ -204,14 +212,10 @@ public ArmeriaTelemetry build() {
 
     InstrumenterBuilder<ClientRequestContext, RequestLog> clientInstrumenterBuilder =
         Instrumenter.builder(
-            openTelemetry,
-            INSTRUMENTATION_NAME,
-            HttpSpanNameExtractor.create(clientAttributesGetter));
+            openTelemetry, INSTRUMENTATION_NAME, httpClientSpanNameExtractorBuilder.build());
     InstrumenterBuilder<ServiceRequestContext, RequestLog> serverInstrumenterBuilder =
         Instrumenter.builder(
-            openTelemetry,
-            INSTRUMENTATION_NAME,
-            HttpSpanNameExtractor.create(serverAttributesGetter));
+            openTelemetry, INSTRUMENTATION_NAME, httpServerSpanNameExtractorBuilder.build());
 
     Stream.of(clientInstrumenterBuilder, serverInstrumenterBuilder)
         .forEach(instrumenter -> instrumenter.addAttributesExtractors(additionalExtractors));

diff --git a/...entelemetry/javaagent/instrumentation/asynchttpclient/v1_9/AsyncHttpClientSingletons.java b/...entelemetry/javaagent/instrumentation/asynchttpclient/v1_9/AsyncHttpClientSingletons.java
@@ -31,7 +31,9 @@ public final class AsyncHttpClientSingletons {
         Instrumenter.<Request, Response>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...entelemetry/javaagent/instrumentation/asynchttpclient/v2_0/AsyncHttpClientSingletons.java b/...entelemetry/javaagent/instrumentation/asynchttpclient/v2_0/AsyncHttpClientSingletons.java
@@ -30,7 +30,9 @@ public final class AsyncHttpClientSingletons {
         Instrumenter.<RequestContext, Response>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/.../opentelemetry/javaagent/instrumentation/googlehttpclient/GoogleHttpClientSingletons.java b/.../opentelemetry/javaagent/instrumentation/googlehttpclient/GoogleHttpClientSingletons.java
@@ -31,7 +31,9 @@ public class GoogleHttpClientSingletons {
         Instrumenter.<HttpRequest, HttpResponse>builder(
                 GlobalOpenTelemetry.get(),
                 INSTRUMENTATION_NAME,
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...t/src/main/java/io/opentelemetry/javaagent/instrumentation/grizzly/GrizzlySingletons.java b/...t/src/main/java/io/opentelemetry/javaagent/instrumentation/grizzly/GrizzlySingletons.java
@@ -30,7 +30,9 @@ public final class GrizzlySingletons {
         Instrumenter.<HttpRequestPacket, HttpResponsePacket>builder(
                 GlobalOpenTelemetry.get(),
                 "io.opentelemetry.grizzly-2.3",
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpServerAttributesExtractor.builder(httpAttributesGetter)

diff --git a/...pentelemetry/javaagent/instrumentation/httpurlconnection/HttpUrlConnectionSingletons.java b/...pentelemetry/javaagent/instrumentation/httpurlconnection/HttpUrlConnectionSingletons.java
@@ -28,7 +28,9 @@ public final class HttpUrlConnectionSingletons {
         Instrumenter.<HttpURLConnection, Integer>builder(
                 GlobalOpenTelemetry.get(),
                 "io.opentelemetry.http-url-connection",
-                HttpSpanNameExtractor.create(httpAttributesGetter))
+                HttpSpanNameExtractor.builder(httpAttributesGetter)
+                    .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods())
+                    .build())
             .setSpanStatusExtractor(HttpSpanStatusExtractor.create(httpAttributesGetter))
             .addAttributesExtractor(
                 HttpClientAttributesExtractor.builder(httpAttributesGetter)

diff --git a/.../java/io/opentelemetry/javaagent/instrumentation/httpclient/JavaHttpClientSingletons.java b/.../java/io/opentelemetry/javaagent/instrumentation/httpclient/JavaHttpClientSingletons.java
@@ -33,6 +33,7 @@ public class JavaHttpClientSingletons {
                     .setCapturedRequestHeaders(CommonConfig.get().getClientRequestHeaders())
                     .setCapturedResponseHeaders(CommonConfig.get().getClientResponseHeaders())
                     .setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods()),
+            builder -> builder.setKnownMethods(CommonConfig.get().getKnownHttpRequestMethods()),
             singletonList(
                 PeerServiceAttributesExtractor.create(
                     JavaHttpClientAttributesGetter.INSTANCE,

diff --git a/...main/java/io/opentelemetry/instrumentation/httpclient/JavaHttpClientTelemetryBuilder.java b/...main/java/io/opentelemetry/instrumentation/httpclient/JavaHttpClientTelemetryBuilder.java
@@ -10,6 +10,7 @@
 import io.opentelemetry.instrumentation.api.instrumenter.AttributesExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.Instrumenter;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpClientAttributesExtractorBuilder;
+import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractorBuilder;
 import io.opentelemetry.instrumentation.httpclient.internal.HttpHeadersSetter;
 import io.opentelemetry.instrumentation.httpclient.internal.JavaHttpClientInstrumenterFactory;
 import java.net.http.HttpRequest;
@@ -25,9 +26,10 @@ public final class JavaHttpClientTelemetryBuilder {
 
   private final List<AttributesExtractor<? super HttpRequest, ? super HttpResponse<?>>>
       additionalExtractors = new ArrayList<>();
-
   private Consumer<HttpClientAttributesExtractorBuilder<HttpRequest, HttpResponse<?>>>
       extractorConfigurer = builder -> {};
+  private Consumer<HttpSpanNameExtractorBuilder<HttpRequest>> spanNameExtractorConfigurer =
+      builder -> {};
   private boolean emitExperimentalHttpClientMetrics = false;
 
   JavaHttpClientTelemetryBuilder(OpenTelemetry openTelemetry) {
@@ -86,6 +88,8 @@ public JavaHttpClientTelemetryBuilder setCapturedResponseHeaders(List<String> re
   public JavaHttpClientTelemetryBuilder setKnownMethods(Set<String> knownMethods) {
     extractorConfigurer =
         extractorConfigurer.andThen(builder -> builder.setKnownMethods(knownMethods));
+    spanNameExtractorConfigurer =
+        spanNameExtractorConfigurer.andThen(builder -> builder.setKnownMethods(knownMethods));
     return this;
   }
 
@@ -107,6 +111,7 @@ public JavaHttpClientTelemetry build() {
         JavaHttpClientInstrumenterFactory.createInstrumenter(
             openTelemetry,
             extractorConfigurer,
+            spanNameExtractorConfigurer,
             additionalExtractors,
             emitExperimentalHttpClientMetrics);