Split HttpClientTest execution methods for sync and callback (#2675)

instrumentation/akka-http-10.0/javaagent/src/test/groovy/AkkaHttpClientInstrumentationTest.groovy

@@ -9,10 +9,13 @@ import akka.actor.ActorSystem
 import akka.http.javadsl.Http
 import akka.http.javadsl.model.HttpMethods
 import akka.http.javadsl.model.HttpRequest
+import akka.http.javadsl.model.HttpResponse
 import akka.http.javadsl.model.headers.RawHeader
 import akka.stream.ActorMaterializer
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.concurrent.CompletionStage
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class AkkaHttpClientInstrumentationTest extends HttpClientTest implements AgentTestTrait {
@@ -23,21 +26,32 @@ class AkkaHttpClientInstrumentationTest extends HttpClientTest implements AgentT
   ActorMaterializer materializer = ActorMaterializer.create(system)
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    return sendRequest(method, uri, headers).toCompletableFuture().get().status().intValue()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers).thenAccept {
+      callback.accept(it.status().intValue())
+    }
+  }
+
+  private CompletionStage<HttpResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
     def request = HttpRequest.create(uri.toString())
       .withMethod(HttpMethods.lookup(method).get())
       .addHeaders(headers.collect { RawHeader.create(it.key, it.value) })
 
-    def response = Http.get(system)
+    return Http.get(system)
       .singleRequest(request, materializer)
-    //.whenComplete { result, error ->
+  }
-    // FIXME: Callback should be here instead.
+
-    //  callback?.call()
+  // TODO(anuraaga): Context leak seems to prevent us from running asynchronous tests in a row.
-    //}
+  // Disable for now.
-      .toCompletableFuture()
+  // https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/2639
-      .get()
+  @Override
-    callback?.call()
+  boolean testCallback() {
-    return response.status().intValue()
+    false
   }
 
   @Override

instrumentation/apache-httpasyncclient-4.1/javaagent/src/test/groovy/ApacheHttpAsyncClientCallbackTest.groovy

@@ -1,77 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import io.opentelemetry.instrumentation.test.AgentTestTrait
-import io.opentelemetry.instrumentation.test.base.HttpClientTest
-import java.util.concurrent.CompletableFuture
-import org.apache.http.HttpResponse
-import org.apache.http.client.config.RequestConfig
-import org.apache.http.concurrent.FutureCallback
-import org.apache.http.impl.nio.client.HttpAsyncClients
-import org.apache.http.message.BasicHeader
-import spock.lang.AutoCleanup
-import spock.lang.Shared
-
-class ApacheHttpAsyncClientCallbackTest extends HttpClientTest implements AgentTestTrait {
-
-  @Shared
-  RequestConfig requestConfig = RequestConfig.custom()
-    .setConnectTimeout(CONNECT_TIMEOUT_MS)
-    .build()
-
-  @AutoCleanup
-  @Shared
-  def client = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig).build()
-
-  def setupSpec() {
-    client.start()
-  }
-
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    def request = new HttpUriRequest(method, uri)
-    headers.entrySet().each {
-      request.addHeader(new BasicHeader(it.key, it.value))
-    }
-
-    def responseFuture = new CompletableFuture<>()
-
-    client.execute(request, new FutureCallback<HttpResponse>() {
-
-      @Override
-      void completed(HttpResponse result) {
-        callback?.call()
-        responseFuture.complete(result.statusLine.statusCode)
-      }
-
-      @Override
-      void failed(Exception ex) {
-        responseFuture.completeExceptionally(ex)
-      }
-
-      @Override
-      void cancelled() {
-        responseFuture.cancel(true)
-      }
-    })
-
-    return responseFuture.get()
-  }
-
-  @Override
-  Integer statusOnRedirectError() {
-    return 302
-  }
-
-  @Override
-  boolean testRemoteConnection() {
-    false // otherwise SocketTimeoutException for https requests
-  }
-
-  @Override
-  boolean testCausality() {
-    false
-  }
-}

instrumentation/apache-httpasyncclient-4.1/javaagent/src/test/groovy/ApacheHttpAsyncClientNullCallbackTest.groovy

@@ -1,62 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import io.opentelemetry.instrumentation.test.AgentTestTrait
-import io.opentelemetry.instrumentation.test.base.HttpClientTest
-import java.util.concurrent.Future
-import org.apache.http.client.config.RequestConfig
-import org.apache.http.impl.nio.client.HttpAsyncClients
-import org.apache.http.message.BasicHeader
-import spock.lang.AutoCleanup
-import spock.lang.Shared
-
-class ApacheHttpAsyncClientNullCallbackTest extends HttpClientTest implements AgentTestTrait {
-
-  @Shared
-  RequestConfig requestConfig = RequestConfig.custom()
-    .setConnectTimeout(CONNECT_TIMEOUT_MS)
-    .build()
-
-  @AutoCleanup
-  @Shared
-  def client = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig).build()
-
-  def setupSpec() {
-    client.start()
-  }
-
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    def request = new HttpUriRequest(method, uri)
-    headers.entrySet().each {
-      request.addHeader(new BasicHeader(it.key, it.value))
-    }
-
-    // The point here is to test case when callback is null - fire-and-forget style
-    // So to make sure request is done we start request, wait for future to finish
-    // and then call callback if present.
-    Future future = client.execute(request, null)
-    future.get()
-    if (callback != null) {
-      callback()
-    }
-    return future.get().statusLine.statusCode
-  }
-
-  @Override
-  Integer statusOnRedirectError() {
-    return 302
-  }
-
-  @Override
-  boolean testRemoteConnection() {
-    false // otherwise SocketTimeoutException for https requests
-  }
-
-  @Override
-  boolean testCausality() {
-    false
-  }
-}

instrumentation/apache-httpasyncclient-4.1/javaagent/src/test/groovy/ApacheHttpAsyncClientTest.groovy

@@ -5,7 +5,8 @@
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
-import java.util.concurrent.CountDownLatch
+import java.util.concurrent.CancellationException
+import java.util.function.Consumer
 import org.apache.http.HttpResponse
 import org.apache.http.client.config.RequestConfig
 import org.apache.http.concurrent.FutureCallback
@@ -30,38 +31,36 @@ class ApacheHttpAsyncClientTest extends HttpClientTest implements AgentTestTrait
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    def request = new HttpUriRequest(method, uri)
+    return client.execute(buildRequest(method, uri, headers), null).get().statusLine.statusCode
-    headers.entrySet().each {
-      request.addHeader(new BasicHeader(it.key, it.value))
-    }
-
-    def latch = new CountDownLatch(callback == null ? 0 : 1)
-
-    def handler = callback == null ? null : new FutureCallback<HttpResponse>() {
-
-      @Override
-      void completed(HttpResponse result) {
-        callback()
-        latch.countDown()
   }
 
   @Override
-      void failed(Exception ex) {
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
-        latch.countDown()
+    client.execute(buildRequest(method, uri, headers), new FutureCallback<HttpResponse>() {
+      @Override
+      void completed(HttpResponse httpResponse) {
+        callback.accept(httpResponse.statusLine.statusCode)
+      }
+
+      @Override
+      void failed(Exception e) {
+        throw e
       }
 
       @Override
       void cancelled() {
-        latch.countDown()
+        throw new CancellationException()
       }
+    })
   }
 
-    def future = client.execute(request, handler)
+  private static HttpUriRequest buildRequest(String method, URI uri, Map<String, String> headers) {
-    def response = future.get()
+    def request = new HttpUriRequest(method, uri)
-    response.entity?.content?.close() // Make sure the connection is closed.
+    headers.entrySet().each {
-    latch.await()
+      request.addHeader(new BasicHeader(it.key, it.value))
-    response.statusLine.statusCode
+    }
+    return request
   }
 
   @Override
@@ -76,6 +75,6 @@ class ApacheHttpAsyncClientTest extends HttpClientTest implements AgentTestTrait
 
   @Override
   boolean testCausality() {
-    return false
+    false
   }
 }

instrumentation/apache-httpclient/apache-httpclient-2.0/javaagent/src/test/groovy/CommonsHttpClientTest.groovy

@@ -30,7 +30,7 @@ class CommonsHttpClientTest extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     HttpMethod httpMethod
 
     switch (method) {
@@ -63,7 +63,6 @@ class CommonsHttpClientTest extends HttpClientTest implements AgentTestTrait {
 
     try {
       client.executeMethod(httpMethod)
-      callback?.call()
       return httpMethod.getStatusCode()
     } finally {
       httpMethod.releaseConnection()
@@ -75,4 +74,9 @@ class CommonsHttpClientTest extends HttpClientTest implements AgentTestTrait {
     // Generates 4 spans
     false
   }
+
+  @Override
+  boolean testCallback() {
+    false
+  }
 }

instrumentation/apache-httpclient/apache-httpclient-4.0/javaagent/src/test/groovy/ApacheHttpClientResponseHandlerTest.groovy

@@ -1,53 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import io.opentelemetry.instrumentation.test.AgentTestTrait
-import io.opentelemetry.instrumentation.test.base.HttpClientTest
-import org.apache.http.HttpResponse
-import org.apache.http.client.ResponseHandler
-import org.apache.http.impl.client.DefaultHttpClient
-import org.apache.http.message.BasicHeader
-import org.apache.http.params.HttpConnectionParams
-import org.apache.http.params.HttpParams
-import spock.lang.Shared
-
-class ApacheHttpClientResponseHandlerTest extends HttpClientTest implements AgentTestTrait {
-
-  @Shared
-  def client = new DefaultHttpClient()
-
-  @Shared
-  def handler = new ResponseHandler<Integer>() {
-    @Override
-    Integer handleResponse(HttpResponse response) {
-      return response.statusLine.statusCode
-    }
-  }
-
-  def setupSpec() {
-    HttpParams httpParams = client.getParams()
-    HttpConnectionParams.setConnectionTimeout(httpParams, CONNECT_TIMEOUT_MS)
-  }
-
-  @Override
-  boolean testCausality() {
-    return false
-  }
-
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    def request = new HttpUriRequest(method, uri)
-    headers.entrySet().each {
-      request.addHeader(new BasicHeader(it.key, it.value))
-    }
-
-    def status = client.execute(request, handler)
-
-    // handler execution is included within the client span, so we can't call the callback there.
-    callback?.call()
-
-    return status
-  }
-}

instrumentation/apache-httpclient/apache-httpclient-4.0/javaagent/src/test/groovy/ApacheHttpClientTest.groovy

@@ -5,6 +5,7 @@
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
 import org.apache.http.HttpHost
 import org.apache.http.HttpRequest
 import org.apache.http.HttpResponse
@@ -31,21 +32,36 @@ abstract class ApacheHttpClientTest<T extends HttpRequest> extends HttpClientTes
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     def request = createRequest(method, uri)
     headers.entrySet().each {
       request.addHeader(new BasicHeader(it.key, it.value))
     }
 
-    def response = executeRequest(request, uri, callback)
+    def response = executeRequest(request, uri)
     response.entity?.content?.close() // Make sure the connection is closed.
 
     return response.statusLine.statusCode
   }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    def request = createRequest(method, uri)
+    headers.entrySet().each {
+      request.addHeader(new BasicHeader(it.key, it.value))
+    }
+
+    executeRequestWithCallback(request, uri) {
+      it.entity?.content?.close() // Make sure the connection is closed.
+      callback.accept(it.statusLine.statusCode)
+    }
+  }
+
   abstract T createRequest(String method, URI uri)
 
-  abstract HttpResponse executeRequest(T request, URI uri, Closure callback)
+  abstract HttpResponse executeRequest(T request, URI uri)
+
+  abstract void executeRequestWithCallback(T request, URI uri, Consumer<HttpResponse> callback)
 
   static String fullPathFromURI(URI uri) {
     StringBuilder builder = new StringBuilder()
@@ -73,10 +89,15 @@ class ApacheClientHostRequest extends ApacheHttpClientTest<BasicHttpRequest> {
   }
 
   @Override
-  HttpResponse executeRequest(BasicHttpRequest request, URI uri, Closure callback) {
+  HttpResponse executeRequest(BasicHttpRequest request, URI uri) {
-    def response = client.execute(new HttpHost(uri.getHost(), uri.getPort()), request)
+    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request)
-    callback?.call()
+  }
-    return response
+
+  @Override
+  void executeRequestWithCallback(BasicHttpRequest request, URI uri, Consumer<HttpResponse> callback) {
+    client.execute(new HttpHost(uri.getHost(), uri.getPort()), request) {
+      callback.accept(it)
+    }
   }
 
   @Override
@@ -92,49 +113,14 @@ class ApacheClientHostRequestContext extends ApacheHttpClientTest<BasicHttpReque
   }
 
   @Override
-  HttpResponse executeRequest(BasicHttpRequest request, URI uri, Closure callback) {
+  HttpResponse executeRequest(BasicHttpRequest request, URI uri) {
-    def response = client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, new BasicHttpContext())
+    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, new BasicHttpContext())
-    callback?.call()
-    return response
   }
 
   @Override
-  boolean testRemoteConnection() {
+  void executeRequestWithCallback(BasicHttpRequest request, URI uri, Consumer<HttpResponse> callback) {
-    return false
+    client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, {
-  }
+      callback.accept(it)
-}
-
-class ApacheClientHostRequestResponseHandler extends ApacheHttpClientTest<BasicHttpRequest> {
-  @Override
-  BasicHttpRequest createRequest(String method, URI uri) {
-    return new BasicHttpRequest(method, fullPathFromURI(uri))
-  }
-
-  @Override
-  HttpResponse executeRequest(BasicHttpRequest request, URI uri, Closure callback) {
-    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, {
-      callback?.call()
-      return it
-    })
-  }
-
-  @Override
-  boolean testRemoteConnection() {
-    return false
-  }
-}
-
-class ApacheClientHostRequestResponseHandlerContext extends ApacheHttpClientTest<BasicHttpRequest> {
-  @Override
-  BasicHttpRequest createRequest(String method, URI uri) {
-    return new BasicHttpRequest(method, fullPathFromURI(uri))
-  }
-
-  @Override
-  HttpResponse executeRequest(BasicHttpRequest request, URI uri, Closure callback) {
-    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, {
-      callback?.call()
-      return it
     }, new BasicHttpContext())
   }
 
@@ -151,10 +137,15 @@ class ApacheClientUriRequest extends ApacheHttpClientTest<HttpUriRequest> {
   }
 
   @Override
-  HttpResponse executeRequest(HttpUriRequest request, URI uri, Closure callback) {
+  HttpResponse executeRequest(HttpUriRequest request, URI uri) {
-    def response = client.execute(request)
+    return client.execute(request)
-    callback?.call()
+  }
-    return response
+
+  @Override
+  void executeRequestWithCallback(HttpUriRequest request, URI uri, Consumer<HttpResponse> callback) {
+    client.execute(request) {
+      callback.accept(it)
+    }
   }
 }
 
@@ -165,39 +156,14 @@ class ApacheClientUriRequestContext extends ApacheHttpClientTest<HttpUriRequest>
   }
 
   @Override
-  HttpResponse executeRequest(HttpUriRequest request, URI uri, Closure callback) {
+  HttpResponse executeRequest(HttpUriRequest request, URI uri) {
-    def response = client.execute(request, new BasicHttpContext())
+    return client.execute(request, new BasicHttpContext())
-    callback?.call()
-    return response
-  }
-}
-
-class ApacheClientUriRequestResponseHandler extends ApacheHttpClientTest<HttpUriRequest> {
-  @Override
-  HttpUriRequest createRequest(String method, URI uri) {
-    return new HttpUriRequest(method, uri)
   }
 
   @Override
-  HttpResponse executeRequest(HttpUriRequest request, URI uri, Closure callback) {
+  void executeRequestWithCallback(HttpUriRequest request, URI uri, Consumer<HttpResponse> callback) {
-    return client.execute(request, {
+    client.execute(request, {
-      callback?.call()
+      callback.accept(it)
-      it
-    })
-  }
-}
-
-class ApacheClientUriRequestResponseHandlerContext extends ApacheHttpClientTest<HttpUriRequest> {
-  @Override
-  HttpUriRequest createRequest(String method, URI uri) {
-    return new HttpUriRequest(method, uri)
-  }
-
-  @Override
-  HttpResponse executeRequest(HttpUriRequest request, URI uri, Closure callback) {
-    return client.execute(request, {
-      callback?.call()
-      it
     }, new BasicHttpContext())
   }
 }

instrumentation/apache-httpclient/apache-httpclient-5.0/javaagent/src/test/groovy/ApacheHttpClientResponseHandlerTest.groovy

@@ -1,96 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import io.opentelemetry.instrumentation.test.AgentTestTrait
-import io.opentelemetry.instrumentation.test.base.HttpClientTest
-import java.util.concurrent.TimeUnit
-import org.apache.hc.client5.http.classic.methods.HttpUriRequestBase
-import org.apache.hc.client5.http.config.RequestConfig
-import org.apache.hc.client5.http.impl.classic.HttpClientBuilder
-import org.apache.hc.client5.http.impl.classic.HttpClients
-import org.apache.hc.core5.http.ClassicHttpRequest
-import org.apache.hc.core5.http.ClassicHttpResponse
-import org.apache.hc.core5.http.HttpHost
-import org.apache.hc.core5.http.HttpRequest
-import org.apache.hc.core5.http.io.HttpClientResponseHandler
-import org.apache.hc.core5.http.message.BasicHeader
-import org.apache.hc.core5.http.protocol.BasicHttpContext
-import spock.lang.AutoCleanup
-import spock.lang.Shared
-
-abstract class ApacheHttpClientResponseHandlerTest<T extends HttpRequest> extends HttpClientTest implements AgentTestTrait {
-
-  @Shared
-  @AutoCleanup
-  def client
-
-  @Shared
-  def handler = new HttpClientResponseHandler<Integer>() {
-    @Override
-    Integer handleResponse(ClassicHttpResponse response) {
-      return response.code
-    }
-  }
-
-  def setupSpec() {
-    HttpClientBuilder builder = HttpClients.custom()
-    builder.setDefaultRequestConfig(RequestConfig.custom()
-      .setConnectTimeout(CONNECT_TIMEOUT_MS, TimeUnit.MILLISECONDS)
-      .build())
-
-    client = builder.build()
-  }
-
-  abstract int executeRequest(T request)
-
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    def request = new HttpUriRequestBase(method, uri)
-    headers.entrySet().each {
-      request.addHeader(new BasicHeader(it.key, it.value))
-    }
-
-    def status = executeRequest(request)
-
-    // handler execution is included within the client span, so we can't call the callback there.
-    callback?.call()
-
-    return status
-  }
-}
-
-class ApacheClientHandlerRequest extends ApacheHttpClientResponseHandlerTest<ClassicHttpRequest> {
-
-  @Override
-  int executeRequest(ClassicHttpRequest request) {
-    return client.execute(request, handler)
-  }
-}
-
-class ApacheClientContextHandlerRequest extends ApacheHttpClientResponseHandlerTest<ClassicHttpRequest> {
-
-  @Override
-  int executeRequest(ClassicHttpRequest request) {
-    return client.execute(request, new BasicHttpContext(), handler)
-  }
-}
-
-class ApacheClientHostHandlerRequest extends ApacheHttpClientResponseHandlerTest<ClassicHttpRequest> {
-
-  @Override
-  int executeRequest(ClassicHttpRequest request) {
-    URI uri = request.getUri()
-    return client.execute(new HttpHost(uri.getScheme(), uri.getHost(), uri.getPort()), request, handler)
-  }
-}
-
-class ApacheClientHostAndContextHandlerRequest extends ApacheHttpClientResponseHandlerTest<ClassicHttpRequest> {
-
-  @Override
-  int executeRequest(ClassicHttpRequest request) {
-    URI uri = request.getUri()
-    return client.execute(new HttpHost(uri.getScheme(), uri.getHost(), uri.getPort()), request, new BasicHttpContext(), handler)
-  }
-}

instrumentation/apache-httpclient/apache-httpclient-5.0/javaagent/src/test/groovy/ApacheHttpClientTest.groovy

@@ -6,8 +6,10 @@
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import org.apache.hc.client5.http.classic.methods.HttpUriRequestBase
 import org.apache.hc.client5.http.config.RequestConfig
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient
 import org.apache.hc.client5.http.impl.classic.HttpClientBuilder
 import org.apache.hc.client5.http.impl.classic.HttpClients
 import org.apache.hc.core5.http.ClassicHttpRequest
@@ -23,7 +25,7 @@ import spock.lang.Shared
 abstract class ApacheHttpClientTest<T extends HttpRequest> extends HttpClientTest implements AgentTestTrait {
   @Shared
   @AutoCleanup
-  def client
+  CloseableHttpClient client
 
   def setupSpec() {
     HttpClientBuilder builder = HttpClients.custom()
@@ -35,21 +37,36 @@ abstract class ApacheHttpClientTest<T extends HttpRequest> extends HttpClientTes
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     def request = createRequest(method, uri)
     headers.entrySet().each {
       request.addHeader(new BasicHeader(it.key, it.value))
     }
 
-    def response = executeRequest(request, uri, callback)
+    def response = executeRequest(request, uri)
     response.close() // Make sure the connection is closed.
 
     return response.code
   }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    def request = createRequest(method, uri)
+    headers.entrySet().each {
+      request.addHeader(new BasicHeader(it.key, it.value))
+    }
+
+    executeRequestWithCallback(request, uri) {
+      it.close() // Make sure the connection is closed.
+      callback.accept(it.code)
+    }
+  }
+
   abstract T createRequest(String method, URI uri)
 
-  abstract ClassicHttpResponse executeRequest(T request, URI uri, Closure callback)
+  abstract ClassicHttpResponse executeRequest(T request, URI uri)
+
+  abstract void executeRequestWithCallback(T request, URI uri, Consumer<ClassicHttpResponse> callback)
 
   static String fullPathFromURI(URI uri) {
     StringBuilder builder = new StringBuilder()
@@ -77,10 +94,15 @@ class ApacheClientHostRequest extends ApacheHttpClientTest<ClassicHttpRequest> {
   }
 
   @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
+  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri) {
-    def response = client.execute(new HttpHost(uri.getHost(), uri.getPort()), request)
+    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request)
-    callback?.call()
+  }
-    return response
+
+  @Override
+  void executeRequestWithCallback(ClassicHttpRequest request, URI uri, Consumer<ClassicHttpResponse> callback) {
+    client.execute(new HttpHost(uri.getHost(), uri.getPort()), request) {
+      callback.accept(it)
+    }
   }
 
   @Override
@@ -96,52 +118,17 @@ class ApacheClientHostRequestContext extends ApacheHttpClientTest<ClassicHttpReq
   }
 
   @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
+  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri) {
-    def response = client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, new BasicHttpContext())
+    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, new BasicHttpContext())
-    callback?.call()
-    return response
   }
 
   @Override
-  boolean testRemoteConnection() {
+  void executeRequestWithCallback(ClassicHttpRequest request, URI uri, Consumer<ClassicHttpResponse> callback) {
-    return false
+    client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, new BasicHttpContext()) {
+      callback.accept(it)
     }
   }
 
-class ApacheClientHostRequestResponseHandler extends ApacheHttpClientTest<ClassicHttpRequest> {
-  @Override
-  ClassicHttpRequest createRequest(String method, URI uri) {
-    return new BasicClassicHttpRequest(method, fullPathFromURI(uri))
-  }
-
-  @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
-    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, {
-      callback?.call()
-      return it
-    })
-  }
-
-  @Override
-  boolean testRemoteConnection() {
-    return false
-  }
-}
-
-class ApacheClientHostRequestResponseHandlerContext extends ApacheHttpClientTest<ClassicHttpRequest> {
-  @Override
-  ClassicHttpRequest createRequest(String method, URI uri) {
-    return new BasicClassicHttpRequest(method, fullPathFromURI(uri))
-  }
-
-  @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
-    return client.execute(new HttpHost(uri.getHost(), uri.getPort()), request, new BasicHttpContext(), {
-      callback?.call()
-      return it
-    })
-  }
-
   @Override
   boolean testRemoteConnection() {
     return false
@@ -155,10 +142,15 @@ class ApacheClientUriRequest extends ApacheHttpClientTest<ClassicHttpRequest> {
   }
 
   @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
+  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri) {
-    def response = client.execute(request)
+    return client.execute(request)
-    callback?.call()
+  }
-    return response
+
+  @Override
+  void executeRequestWithCallback(ClassicHttpRequest request, URI uri, Consumer<ClassicHttpResponse> callback) {
+    client.execute(request) {
+      callback.accept(it)
+    }
   }
 }
 
@@ -169,39 +161,14 @@ class ApacheClientUriRequestContext extends ApacheHttpClientTest<ClassicHttpRequ
   }
 
   @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
+  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri) {
-    def response = client.execute(request, new BasicHttpContext())
+    return client.execute(request, new BasicHttpContext())
-    callback?.call()
-    return response
-  }
-}
-
-class ApacheClientUriRequestResponseHandler extends ApacheHttpClientTest<ClassicHttpRequest> {
-  @Override
-  ClassicHttpRequest createRequest(String method, URI uri) {
-    return new HttpUriRequestBase(method, uri)
   }
 
   @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
+  void executeRequestWithCallback(ClassicHttpRequest request, URI uri, Consumer<ClassicHttpResponse> callback) {
-    return client.execute(request, {
+    client.execute(request, new BasicHttpContext()) {
-      callback?.call()
+      callback.accept(it)
-      it
-    })
     }
   }
-
-class ApacheClientUriRequestResponseHandlerContext extends ApacheHttpClientTest<ClassicHttpRequest> {
-  @Override
-  ClassicHttpRequest createRequest(String method, URI uri) {
-    return new HttpUriRequestBase(method, uri)
-  }
-
-  @Override
-  ClassicHttpResponse executeRequest(ClassicHttpRequest request, URI uri, Closure callback) {
-    return client.execute(request, {
-      callback?.call()
-      it
-    })
-  }
 }

instrumentation/armeria-1.3/library/src/test/groovy/io/opentelemetry/instrumentation/armeria/v1_3/ArmeriaHttpClientTest.groovy

@@ -19,4 +19,11 @@ class ArmeriaHttpClientTest extends AbstractArmeriaHttpClientTest implements Lib
   boolean testWithClientParent() {
     false
   }
+
+  // Agent users have automatic propagation through executor instrumentation, but library users
+  // should do manually using Armeria patterns.
+  @Override
+  boolean testCallbackWithParent() {
+    false
+  }
 }

instrumentation/armeria-1.3/testing/src/main/groovy/io/opentelemetry/instrumentation/armeria/v1_3/AbstractArmeriaHttpClientTest.groovy

@@ -5,7 +5,6 @@
 
 package io.opentelemetry.instrumentation.armeria.v1_3
 
-import com.google.common.util.concurrent.MoreExecutors
 import com.linecorp.armeria.client.WebClient
 import com.linecorp.armeria.client.WebClientBuilder
 import com.linecorp.armeria.common.AggregatedHttpResponse
@@ -13,13 +12,10 @@ import com.linecorp.armeria.common.HttpMethod
 import com.linecorp.armeria.common.HttpRequest
 import com.linecorp.armeria.common.RequestHeaders
 import io.opentelemetry.api.common.AttributeKey
-import io.opentelemetry.context.Context
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import io.opentelemetry.semconv.trace.attributes.SemanticAttributes
-import java.util.concurrent.CountDownLatch
+import java.util.concurrent.CompletionException
-import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
-import java.util.concurrent.atomic.AtomicReference
-import java.util.function.BiConsumer
 import spock.lang.Shared
 
 abstract class AbstractArmeriaHttpClientTest extends HttpClientTest {
@@ -30,33 +26,28 @@ abstract class AbstractArmeriaHttpClientTest extends HttpClientTest {
   def client = configureClient(WebClient.builder()).build()
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    HttpRequest request = HttpRequest.of(
+    AggregatedHttpResponse response
+    try {
+      response = client.execute(buildRequest(method, uri, headers)).aggregate().join()
+    } catch(CompletionException e) {
+      throw e.cause
+    }
+    return response.status().code()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    client.execute(buildRequest(method, uri, headers)).aggregate().thenAccept {
+      callback.accept(it.status().code())
+    }
+  }
+
+  private static HttpRequest buildRequest(String method, URI uri, Map<String, String> headers = [:]) {
+    return HttpRequest.of(
       RequestHeaders.builder(HttpMethod.valueOf(method), uri.toString())
         .set(headers.entrySet())
         .build())
-
-    AtomicReference<AggregatedHttpResponse> responseRef = new AtomicReference<>()
-    AtomicReference<Throwable> exRef = new AtomicReference<>()
-    def latch = new CountDownLatch(1)
-    client.execute(request).aggregate().whenCompleteAsync(new BiConsumer<AggregatedHttpResponse, Throwable>() {
-      @Override
-      void accept(AggregatedHttpResponse aggregatedHttpResponse, Throwable throwable) {
-        if (throwable != null) {
-          exRef.set(throwable)
-        } else {
-          responseRef.set(aggregatedHttpResponse)
-        }
-        callback?.call()
-        latch.countDown()
-      }
-    }, Context.current().wrap(MoreExecutors.directExecutor()))
-
-    latch.await(30, TimeUnit.SECONDS)
-    if (exRef.get() != null) {
-      throw exRef.get()
-    }
-    return responseRef.get().status().code()
   }
 
   // Not supported yet: https://github.com/line/armeria/issues/2489

instrumentation/async-http-client-1.9/javaagent/src/test/groovy/AsyncHttpClientTest.groovy

@@ -11,6 +11,7 @@ import com.ning.http.client.Response
 import com.ning.http.client.uri.Uri
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
 import spock.lang.AutoCleanup
 import spock.lang.Shared
 
@@ -21,27 +22,29 @@ class AsyncHttpClientTest extends HttpClientTest implements AgentTestTrait {
   def client = new AsyncHttpClient()
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
+    return client.executeRequest(buildRequest(method, uri, headers)).get().statusCode
+  }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    // TODO(anuraaga): Do we also need to test ListenableFuture callback?
+    client.executeRequest(buildRequest(method, uri, headers), new AsyncCompletionHandler<Void>() {
+      @Override
+      Void onCompleted(Response response) throws Exception {
+        callback.accept(response.statusCode)
+        return null
+      }
+    })
+  }
+
+  private static Request buildRequest(String method, URI uri, Map<String, String> headers) {
     RequestBuilder requestBuilder = new RequestBuilder(method)
       .setUri(Uri.create(uri.toString()))
     headers.entrySet().each {
       requestBuilder.addHeader(it.key, it.value)
     }
-    Request request = requestBuilder.build()
+    return requestBuilder.build()
-
-    def handler = new AsyncCompletionHandler() {
-      @Override
-      Object onCompleted(Response response) throws Exception {
-        if (callback != null) {
-          callback()
-        }
-        return response
-      }
-    }
-
-    def response = client.executeRequest(request, handler).get()
-    response.statusCode
   }
 
   @Override

instrumentation/async-http-client-2.0/javaagent/src/test/groovy/AsyncHttpClientTest.groovy

@@ -5,6 +5,7 @@
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
 import org.asynchttpclient.AsyncCompletionHandler
 import org.asynchttpclient.Dsl
 import org.asynchttpclient.Request
@@ -21,27 +22,28 @@ class AsyncHttpClientTest extends HttpClientTest implements AgentTestTrait {
   def client = Dsl.asyncHttpClient()
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
+    return client.executeRequest(buildRequest(method, uri, headers)).get().statusCode
+  }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    client.executeRequest(buildRequest(method, uri, headers), new AsyncCompletionHandler<Void>() {
+      @Override
+      Void onCompleted(Response response) throws Exception {
+        callback.accept(response.statusCode)
+        return null
+      }
+    })
+  }
+
+  private static Request buildRequest(String method, URI uri, Map<String, String> headers) {
     RequestBuilder requestBuilder = new RequestBuilder(method)
       .setUri(Uri.create(uri.toString()))
     headers.entrySet().each {
       requestBuilder.addHeader(it.key, it.value)
     }
-    Request request = requestBuilder.build()
+    return requestBuilder.build()
-
-    def handler = new AsyncCompletionHandler() {
-      @Override
-      Object onCompleted(Response response) throws Exception {
-        if (callback != null) {
-          callback()
-        }
-        return response
-      }
-    }
-
-    def response = client.executeRequest(request, handler).get()
-    response.statusCode
   }
 
   //TODO see https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/2347

instrumentation/google-http-client-1.19/javaagent/src/test/groovy/AbstractGoogleHttpClientTest.groovy

@@ -20,11 +20,20 @@ abstract class AbstractGoogleHttpClientTest extends HttpClientTest implements Ag
   def requestFactory = new NetHttpTransport().createRequestFactory()
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  boolean testCallback() {
-    doRequest(method, uri, headers, callback, false)
+    // executeAsync does not actually allow asynchronous execution since it returns a standard
+    // Future which cannot have callbacks attached. We instrument execute and executeAsync
+    // differently so test both but do not need to run our normal asynchronous tests, which check
+    // context propagation, as there is no possible context propagation.
+    return false
   }
 
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback, boolean throwExceptionOnError) {
+  @Override
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    doRequest(method, uri, headers, false)
+  }
+
+  int doRequest(String method, URI uri, Map<String, String> headers, boolean throwExceptionOnError) {
     GenericUrl genericUrl = new GenericUrl(uri)
 
     HttpRequest request = requestFactory.buildRequest(method, genericUrl, null)
@@ -40,8 +49,6 @@ abstract class AbstractGoogleHttpClientTest extends HttpClientTest implements Ag
     request.setThrowExceptionOnExecuteError(throwExceptionOnError)
 
     HttpResponse response = executeRequest(request)
-    callback?.call()
-
     return response.getStatusCode()
   }
 

instrumentation/http-url-connection/javaagent/src/test/groovy/HttpUrlConnectionResponseCodeOnlyTest.groovy

@@ -9,7 +9,7 @@ import io.opentelemetry.instrumentation.test.base.HttpClientTest
 class HttpUrlConnectionResponseCodeOnlyTest extends HttpClientTest implements AgentTestTrait {
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
     HttpURLConnection connection = uri.toURL().openConnection()
     try {
       connection.setRequestMethod(method)
@@ -18,7 +18,6 @@ class HttpUrlConnectionResponseCodeOnlyTest extends HttpClientTest implements Ag
       connection.setRequestProperty("Connection", "close")
       return connection.getResponseCode()
     } finally {
-      callback?.call()
       connection.disconnect()
     }
   }
@@ -32,4 +31,9 @@ class HttpUrlConnectionResponseCodeOnlyTest extends HttpClientTest implements Ag
   Integer statusOnRedirectError() {
     return 302
   }
+
+  @Override
+  boolean testCallback() {
+    return false
+  }
 }

instrumentation/http-url-connection/javaagent/src/test/groovy/HttpUrlConnectionTest.groovy

@@ -22,7 +22,7 @@ class HttpUrlConnectionTest extends HttpClientTest implements AgentTestTrait {
   static final STATUS = 200
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
     HttpURLConnection connection = uri.toURL().openConnection()
     try {
       connection.setRequestMethod(method)
@@ -35,7 +35,6 @@ class HttpUrlConnectionTest extends HttpClientTest implements AgentTestTrait {
       assert Span.current() == parentSpan
       stream.readLines()
       stream.close()
-      callback?.call()
       return connection.getResponseCode()
     } finally {
       connection.disconnect()
@@ -52,6 +51,11 @@ class HttpUrlConnectionTest extends HttpClientTest implements AgentTestTrait {
     return 302
   }
 
+  @Override
+  boolean testCallback() {
+    return false
+  }
+
   @Unroll
   def "trace request with propagation (useCaches: #useCaches)"() {
     setup:

instrumentation/http-url-connection/javaagent/src/test/groovy/HttpUrlConnectionUseCachesFalseTest.groovy

@@ -10,7 +10,7 @@ import io.opentelemetry.instrumentation.test.base.HttpClientTest
 class HttpUrlConnectionUseCachesFalseTest extends HttpClientTest implements AgentTestTrait {
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
     HttpURLConnection connection = uri.toURL().openConnection()
     try {
       connection.setRequestMethod(method)
@@ -23,7 +23,6 @@ class HttpUrlConnectionUseCachesFalseTest extends HttpClientTest implements Agen
       assert Span.current() == parentSpan
       stream.readLines()
       stream.close()
-      callback?.call()
       return connection.getResponseCode()
     } finally {
       connection.disconnect()
@@ -39,4 +38,9 @@ class HttpUrlConnectionUseCachesFalseTest extends HttpClientTest implements Agen
   Integer statusOnRedirectError() {
     return 302
   }
+
+  @Override
+  boolean testCallback() {
+    return false
+  }
 }

instrumentation/http-url-connection/javaagent/src/test/groovy/SpringRestTemplateTest.groovy

@@ -5,6 +5,7 @@
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
 import org.springframework.http.HttpEntity
 import org.springframework.http.HttpHeaders
 import org.springframework.http.HttpMethod
@@ -27,19 +28,27 @@ class SpringRestTemplateTest extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     try {
       def httpHeaders = new HttpHeaders()
       headers.each { httpHeaders.put(it.key, [it.value]) }
       def request = new HttpEntity<String>(httpHeaders)
-      ResponseEntity<String> response = restTemplate.exchange(uri, HttpMethod.resolve(method), request, String)
+      ResponseEntity<String> response = restTemplate.exchange(uri, HttpMethod.valueOf(method), request, String)
-      callback?.call()
       return response.statusCode.value()
     } catch (ResourceAccessException exception) {
       throw exception.getCause()
     }
   }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    restTemplate.execute(uri, HttpMethod.valueOf(method), { request ->
+      headers.forEach(request.getHeaders().&add)
+    }, { response ->
+      callback.accept(response.statusCode.value())
+    })
+  }
+
   @Override
   int maxRedirects() {
     20

instrumentation/java-httpclient/javaagent/src/test/groovy/JdkHttpClientAsyncTest.groovy

@@ -1,15 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import java.net.http.HttpRequest
-import java.net.http.HttpResponse
-
-class JdkHttpClientAsyncTest extends JdkHttpClientTest {
-
-  @Override
-  HttpResponse send(HttpRequest request) {
-    return client.sendAsync(request, HttpResponse.BodyHandlers.ofString()).get()
-  }
-}

instrumentation/java-httpclient/javaagent/src/test/groovy/JdkHttpClientSyncTest.groovy

@@ -1,16 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import java.net.http.HttpRequest
-import java.net.http.HttpResponse
-
-class JdkHttpClientSyncTest extends JdkHttpClientTest {
-
-  @Override
-  HttpResponse send(HttpRequest request) {
-    return client.send(request, HttpResponse.BodyHandlers.ofString())
-  }
-
-}

instrumentation/java-httpclient/javaagent/src/test/groovy/JdkHttpClientTest.groovy

@@ -13,32 +13,39 @@ import java.net.http.HttpRequest
 import java.net.http.HttpResponse
 import java.time.Duration
 import java.time.temporal.ChronoUnit
+import java.util.function.Consumer
 import spock.lang.Requires
 import spock.lang.Shared
 
-abstract class JdkHttpClientTest extends HttpClientTest implements AgentTestTrait {
+class JdkHttpClientTest extends HttpClientTest implements AgentTestTrait {
 
   @Shared
   def client = HttpClient.newBuilder().connectTimeout(Duration.of(CONNECT_TIMEOUT_MS,
     ChronoUnit.MILLIS)).followRedirects(HttpClient.Redirect.NORMAL).build()
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
+    return client.send(buildRequest(method, uri, headers), HttpResponse.BodyHandlers.ofString())
+      .statusCode()
+  }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    client.sendAsync(buildRequest(method, uri, headers), HttpResponse.BodyHandlers.ofString())
+      .thenAccept {
+        callback.accept(it.statusCode())
+      }
+  }
+
+  private static HttpRequest buildRequest(String method, URI uri, Map<String, String> headers) {
     def builder = HttpRequest.newBuilder().uri(uri).method(method, HttpRequest.BodyPublishers.noBody())
 
     headers.entrySet().each {
       builder.header(it.key, it.value)
     }
-    def request = builder.build()
+    return builder.build()
-
-    def resp = send(request)
-    callback?.call()
-    return resp.statusCode()
   }
 
-  abstract HttpResponse send(HttpRequest request)
-
   @Override
   boolean testCircularRedirects() {
     return false

instrumentation/jaxrs-client/jaxrs-client-1.1/javaagent/src/test/groovy/JaxRsClientV1Test.groovy

@@ -24,17 +24,22 @@ class JaxRsClientV1Test extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     def resource = client.resource(uri).requestBuilder
     headers.each { resource.header(it.key, it.value) }
     def body = BODY_METHODS.contains(method) ? "" : null
     ClientResponse response = resource.method(method, ClientResponse, body)
-    callback?.call()
 
     return response.status
   }
 
+  @Override
   boolean testCircularRedirects() {
     false
   }
+
+  @Override
+  boolean testCallback() {
+    false
+  }
 }

instrumentation/jaxrs-client/jaxrs-client-2.0/jaxrs-client-2.0-common/javaagent/src/test/groovy/JaxRsClientAsyncTest.groovy

@@ -1,96 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import io.opentelemetry.instrumentation.test.AgentTestTrait
-import io.opentelemetry.instrumentation.test.base.HttpClientTest
-import java.util.concurrent.CountDownLatch
-import java.util.concurrent.TimeUnit
-import javax.ws.rs.client.AsyncInvoker
-import javax.ws.rs.client.Client
-import javax.ws.rs.client.ClientBuilder
-import javax.ws.rs.client.Entity
-import javax.ws.rs.client.InvocationCallback
-import javax.ws.rs.client.WebTarget
-import javax.ws.rs.core.MediaType
-import javax.ws.rs.core.Response
-import org.apache.cxf.jaxrs.client.spec.ClientBuilderImpl
-import org.glassfish.jersey.client.ClientConfig
-import org.glassfish.jersey.client.ClientProperties
-import org.glassfish.jersey.client.JerseyClientBuilder
-import org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder
-
-abstract class JaxRsClientAsyncTest extends HttpClientTest implements AgentTestTrait {
-
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    Client client = builder().build()
-    WebTarget service = client.target(uri)
-    def builder = service.request(MediaType.TEXT_PLAIN)
-    headers.each { builder.header(it.key, it.value) }
-    AsyncInvoker request = builder.async()
-
-    def body = BODY_METHODS.contains(method) ? Entity.text("") : null
-    def latch = new CountDownLatch(1)
-    Response response = request.method(method, (Entity) body, new InvocationCallback<Response>() {
-      @Override
-      void completed(Response s) {
-        callback?.call()
-        latch.countDown()
-      }
-
-      @Override
-      void failed(Throwable throwable) {
-        latch.countDown()
-      }
-    }).get()
-    response.close()
-
-    // need to wait for callback to complete in case test is expecting span from it
-    latch.await()
-    return response.status
-  }
-
-  abstract ClientBuilder builder()
-}
-
-class JerseyClientAsyncTest extends JaxRsClientAsyncTest {
-
-  @Override
-  ClientBuilder builder() {
-    ClientConfig config = new ClientConfig()
-    config.property(ClientProperties.CONNECT_TIMEOUT, CONNECT_TIMEOUT_MS)
-    return new JerseyClientBuilder().withConfig(config)
-  }
-
-  boolean testCircularRedirects() {
-    false
-  }
-}
-
-class ResteasyClientAsyncTest extends JaxRsClientAsyncTest {
-
-  @Override
-  ClientBuilder builder() {
-    return new ResteasyClientBuilder()
-      .establishConnectionTimeout(CONNECT_TIMEOUT_MS, TimeUnit.MILLISECONDS)
-  }
-
-  boolean testRedirects() {
-    false
-  }
-}
-
-class CxfClientAsyncTest extends JaxRsClientAsyncTest {
-
-  @Override
-  ClientBuilder builder() {
-    return new ClientBuilderImpl()
-      .property("http.connection.timeout", (long) CONNECT_TIMEOUT_MS)
-  }
-
-  boolean testRedirects() {
-    false
-  }
-}

instrumentation/jaxrs-client/jaxrs-client-2.0/jaxrs-client-2.0-common/javaagent/src/test/groovy/JaxRsClientTest.groovy

@@ -9,10 +9,12 @@ import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import io.opentelemetry.semconv.trace.attributes.SemanticAttributes
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import javax.ws.rs.client.Client
 import javax.ws.rs.client.ClientBuilder
 import javax.ws.rs.client.Entity
 import javax.ws.rs.client.Invocation
+import javax.ws.rs.client.InvocationCallback
 import javax.ws.rs.client.WebTarget
 import javax.ws.rs.core.MediaType
 import javax.ws.rs.core.Response
@@ -26,17 +28,37 @@ import spock.lang.Unroll
 abstract class JaxRsClientTest extends HttpClientTest implements AgentTestTrait {
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
+    def request = buildRequest(uri, headers)
+    def body = BODY_METHODS.contains(method) ? Entity.text("") : null
+    Response response = request.method(method, (Entity) body)
+    return response.status
+  }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    def request = buildRequest(uri, headers).async()
+    def body = BODY_METHODS.contains(method) ? Entity.text("") : null
+
+    request.method(method, (Entity) body, new InvocationCallback<Response>() {
+      @Override
+      void completed(Response response) {
+        callback.accept(response.status)
+      }
+
+      @Override
+      void failed(Throwable throwable) {
+        throw throwable
+      }
+    })
+  }
+
+  private Invocation.Builder buildRequest(URI uri, Map<String, String> headers) {
     Client client = builder().build()
     WebTarget service = client.target(uri)
     Invocation.Builder request = service.request(MediaType.TEXT_PLAIN)
     headers.each { request.header(it.key, it.value) }
-    def body = BODY_METHODS.contains(method) ? Entity.text("") : null
+    return request
-    Response response = request.method(method, (Entity) body)
-    callback?.call()
-
-    return response.status
   }
 
   abstract ClientBuilder builder()

instrumentation/jaxrs-client/jaxrs-client-2.0/jaxrs-client-2.0-common/javaagent/src/test/groovy/ResteasyProxyClientTest.groovy

@@ -19,7 +19,7 @@ import org.jboss.resteasy.specimpl.ResteasyUriBuilder
 
 class ResteasyProxyClientTest extends HttpClientTest implements AgentTestTrait {
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
     def proxyMethodName = "${method}_${uri.path}".toLowerCase()
       .replace("/", "")
       .replace('-', '_')
@@ -38,8 +38,6 @@ class ResteasyProxyClientTest extends HttpClientTest implements AgentTestTrait {
 
     def response = proxy."$proxyMethodName"(param, isTestServer)
 
-    callback?.call()
-
     return response.status
   }
 
@@ -63,6 +61,11 @@ class ResteasyProxyClientTest extends HttpClientTest implements AgentTestTrait {
     false
   }
 
+  @Override
+  boolean testCallback() {
+    false
+  }
+
 }
 
 @Path("")

instrumentation/khttp-0.1/javaagent/src/test/groovy/KHttpClientTest.groovy

@@ -10,14 +10,11 @@ import khttp.KHttp
 class KHttpClientTest extends HttpClientTest implements AgentTestTrait {
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     headers.put("User-Agent", "khttp")
     // khttp applies the same timeout for both connect and read
     def timeoutSeconds = CONNECT_TIMEOUT_MS / 1000
     def response = KHttp.request(method, uri.toString(), headers, Collections.emptyMap(), null, null, null, null, timeoutSeconds)
-    if (callback != null) {
-      callback.call()
-    }
     return response.statusCode
   }
 
@@ -26,6 +23,11 @@ class KHttpClientTest extends HttpClientTest implements AgentTestTrait {
     return false
   }
 
+  @Override
+  boolean testCallback() {
+    return false
+  }
+
   @Override
   String userAgent() {
     return "khttp"

instrumentation/netty/netty-3.8/javaagent/src/latestDepTest/groovy/Netty38ClientTest.groovy

@@ -11,16 +11,22 @@ import static io.opentelemetry.instrumentation.test.utils.TraceUtils.runUnderTra
 import com.ning.http.client.AsyncCompletionHandler
 import com.ning.http.client.AsyncHttpClient
 import com.ning.http.client.AsyncHttpClientConfig
+import com.ning.http.client.Request
+import com.ning.http.client.RequestBuilder
 import com.ning.http.client.Response
+import com.ning.http.client.uri.Uri
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import spock.lang.AutoCleanup
 import spock.lang.Shared
 
 class Netty38ClientTest extends HttpClientTest implements AgentTestTrait {
 
+  // NB: Copied from AsyncHttpClientTest.
+
   @Shared
   def clientConfig = new AsyncHttpClientConfig.Builder()
     .setRequestTimeout(TimeUnit.SECONDS.toMillis(10).toInteger())
@@ -28,21 +34,32 @@ class Netty38ClientTest extends HttpClientTest implements AgentTestTrait {
 
   @Shared
   @AutoCleanup
-  AsyncHttpClient asyncHttpClient = new AsyncHttpClient(clientConfig)
+  AsyncHttpClient client = new AsyncHttpClient(clientConfig)
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    def methodName = "prepare" + method.toLowerCase().capitalize()
+    return client.executeRequest(buildRequest(method, uri, headers)).get().statusCode
-    def requestBuilder = asyncHttpClient."$methodName"(uri.toString())
-    headers.each { requestBuilder.setHeader(it.key, it.value) }
-    def response = requestBuilder.execute(new AsyncCompletionHandler() {
-      @Override
-      Object onCompleted(Response response) throws Exception {
-        callback?.call()
-        return response
   }
-    }).get()
+
-    return response.statusCode
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    // TODO(anuraaga): Do we also need to test ListenableFuture callback?
+    client.executeRequest(buildRequest(method, uri, headers), new AsyncCompletionHandler<Void>() {
+      @Override
+      Void onCompleted(Response response) throws Exception {
+        callback.accept(response.statusCode)
+        return null
+      }
+    })
+  }
+
+  private static Request buildRequest(String method, URI uri, Map<String, String> headers) {
+    RequestBuilder requestBuilder = new RequestBuilder(method)
+      .setUri(Uri.create(uri.toString()))
+    headers.entrySet().each {
+      requestBuilder.addHeader(it.key, it.value)
+    }
+    return requestBuilder.build()
   }
 
   @Override

instrumentation/netty/netty-3.8/javaagent/src/test/groovy/Netty38ClientTest.groovy

@@ -11,11 +11,14 @@ import static io.opentelemetry.instrumentation.test.utils.TraceUtils.runUnderTra
 import com.ning.http.client.AsyncCompletionHandler
 import com.ning.http.client.AsyncHttpClient
 import com.ning.http.client.AsyncHttpClientConfig
+import com.ning.http.client.Request
+import com.ning.http.client.RequestBuilder
 import com.ning.http.client.Response
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import spock.lang.AutoCleanup
 import spock.lang.Shared
 
@@ -28,21 +31,32 @@ class Netty38ClientTest extends HttpClientTest implements AgentTestTrait {
 
   @Shared
   @AutoCleanup
-  AsyncHttpClient asyncHttpClient = new AsyncHttpClient(clientConfig)
+  AsyncHttpClient client = new AsyncHttpClient(clientConfig)
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    def methodName = "prepare" + method.toLowerCase().capitalize()
+    return client.executeRequest(buildRequest(method, uri, headers)).get().statusCode
-    def requestBuilder = asyncHttpClient."$methodName"(uri.toString())
-    headers.each { requestBuilder.setHeader(it.key, it.value) }
-    def response = requestBuilder.execute(new AsyncCompletionHandler() {
-      @Override
-      Object onCompleted(Response response) throws Exception {
-        callback?.call()
-        return response
   }
-    }).get()
+
-    return response.statusCode
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    // TODO(anuraaga): Do we also need to test ListenableFuture callback?
+    client.executeRequest(buildRequest(method, uri, headers), new AsyncCompletionHandler<Void>() {
+      @Override
+      Void onCompleted(Response response) throws Exception {
+        callback.accept(response.statusCode)
+        return null
+      }
+    })
+  }
+
+  private static Request buildRequest(String method, URI uri, Map<String, String> headers) {
+    RequestBuilder requestBuilder = new RequestBuilder(method)
+      .setUrl(uri.toString())
+    headers.entrySet().each {
+      requestBuilder.addHeader(it.key, it.value)
+    }
+    return requestBuilder.build()
   }
 
   @Override

instrumentation/netty/netty-4.0/javaagent/src/test/groovy/ClientHandler.java

@@ -3,12 +3,12 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import groovy.lang.Closure;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.codec.http.HttpObject;
 import io.netty.handler.codec.http.HttpResponse;
 import java.util.concurrent.CompletableFuture;
+import java.util.function.Consumer;
 
 /*
 Bridges from async Netty world to the sync world of our http client tests.
@@ -16,10 +16,10 @@ When request initiated by a test gets a response, calls a given callback and com
 future with response's status code.
 */
 public class ClientHandler extends SimpleChannelInboundHandler<HttpObject> {
-  private final Closure<Void> callback;
+  private final Consumer<Integer> callback;
   private final CompletableFuture<Integer> responseCode;
 
-  public ClientHandler(Closure<Void> callback, CompletableFuture<Integer> responseCode) {
+  public ClientHandler(Consumer<Integer> callback, CompletableFuture<Integer> responseCode) {
     this.callback = callback;
     this.responseCode = responseCode;
   }
@@ -30,7 +30,7 @@ public class ClientHandler extends SimpleChannelInboundHandler<HttpObject> {
       ctx.pipeline().remove(this);
 
       if (callback != null) {
-        callback.call();
+        callback.accept(((HttpResponse) msg).getStatus().code());
       }
 
       HttpResponse response = (HttpResponse) msg;

instrumentation/netty/netty-4.0/javaagent/src/test/groovy/Netty40ClientTest.groovy

@@ -27,6 +27,7 @@ import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class Netty40ClientTest extends HttpClientTest implements AgentTestTrait {
@@ -49,18 +50,33 @@ class Netty40ClientTest extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     Channel ch = bootstrap.connect(uri.host, uri.port).sync().channel()
     def result = new CompletableFuture<Integer>()
-    ch.pipeline().addLast(new ClientHandler(callback, result))
+    ch.pipeline().addLast(new ClientHandler(null, result))
 
+    def request = buildRequest(method, uri, headers)
+
+    ch.writeAndFlush(request).get()
+    return result.get(20, TimeUnit.SECONDS)
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    Channel ch = bootstrap.connect(uri.host, uri.port).sync().channel()
+    ch.pipeline().addLast(new ClientHandler(callback, CompletableFuture.completedFuture(0)))
+
+    def request = buildRequest(method, uri, headers)
+
+    ch.writeAndFlush(request)
+  }
+
+  private DefaultFullHttpRequest buildRequest(String method, URI uri, Map<String, String> headers) {
     def request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.valueOf(method), uri.toString(), Unpooled.EMPTY_BUFFER)
     HttpHeaders.setHost(request, uri.host)
     request.headers().set("user-agent", userAgent())
     headers.each { k, v -> request.headers().set(k, v) }
-
+    return request
-    ch.writeAndFlush(request).get()
-    return result.get(20, TimeUnit.SECONDS)
   }
 
   @Override

instrumentation/netty/netty-4.1/javaagent/src/test/groovy/ClientHandler.java

@@ -3,12 +3,12 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import groovy.lang.Closure;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.codec.http.HttpObject;
 import io.netty.handler.codec.http.HttpResponse;
 import java.util.concurrent.CompletableFuture;
+import java.util.function.Consumer;
 
 /*
 Bridges from async Netty world to the sync world of our http client tests.
@@ -16,10 +16,10 @@ When request initiated by a test gets a response, calls a given callback and com
 future with response's status code.
 */
 public class ClientHandler extends SimpleChannelInboundHandler<HttpObject> {
-  private final Closure<Void> callback;
+  private final Consumer<Integer> callback;
   private final CompletableFuture<Integer> responseCode;
 
-  public ClientHandler(Closure<Void> callback, CompletableFuture<Integer> responseCode) {
+  public ClientHandler(Consumer<Integer> callback, CompletableFuture<Integer> responseCode) {
     this.callback = callback;
     this.responseCode = responseCode;
   }
@@ -30,7 +30,7 @@ public class ClientHandler extends SimpleChannelInboundHandler<HttpObject> {
       ctx.pipeline().remove(this);
 
       if (callback != null) {
-        callback.call();
+        callback.accept(((HttpResponse) msg).status().code());
       }
 
       HttpResponse response = (HttpResponse) msg;

instrumentation/netty/netty-4.1/javaagent/src/test/groovy/Netty41ClientTest.groovy

@@ -34,6 +34,7 @@ import java.util.concurrent.CompletableFuture
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.TimeUnit
 import java.util.concurrent.TimeoutException
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class Netty41ClientTest extends HttpClientTest implements AgentTestTrait {
@@ -57,19 +58,34 @@ class Netty41ClientTest extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     Channel ch = bootstrap.connect(uri.host, uri.port).sync().channel()
     def result = new CompletableFuture<Integer>()
-    ch.pipeline().addLast(new ClientHandler(callback, result))
+    ch.pipeline().addLast(new ClientHandler(null, result))
 
-    def request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.valueOf(method), uri.toString(), Unpooled.EMPTY_BUFFER)
+    def request = buildRequest(method, uri, headers)
-    request.headers().set(HttpHeaderNames.HOST, uri.host)
-    headers.each { k, v -> request.headers().set(k, v) }
 
     ch.writeAndFlush(request).get()
     return result.get(20, TimeUnit.SECONDS)
   }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    Channel ch = bootstrap.connect(uri.host, uri.port).sync().channel()
+    ch.pipeline().addLast(new ClientHandler(callback, CompletableFuture.completedFuture(0)))
+
+    def request = buildRequest(method, uri, headers)
+
+    ch.writeAndFlush(request)
+  }
+
+  private static DefaultFullHttpRequest buildRequest(String method, URI uri, Map<String, String> headers) {
+    def request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.valueOf(method), uri.toString(), Unpooled.EMPTY_BUFFER)
+    request.headers().set(HttpHeaderNames.HOST, uri.host)
+    headers.each { k, v -> request.headers().set(k, v) }
+    return request
+  }
+
   @Override
   boolean testRedirects() {
     false

instrumentation/okhttp/okhttp-2.2/javaagent/src/test/groovy/OkHttp2AsyncTest.groovy

@@ -1,55 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import static java.util.concurrent.TimeUnit.SECONDS
-
-import com.squareup.okhttp.Callback
-import com.squareup.okhttp.Headers
-import com.squareup.okhttp.MediaType
-import com.squareup.okhttp.Request
-import com.squareup.okhttp.RequestBody
-import com.squareup.okhttp.Response
-import com.squareup.okhttp.internal.http.HttpMethod
-import java.util.concurrent.CountDownLatch
-import java.util.concurrent.atomic.AtomicReference
-
-class OkHttp2AsyncTest extends OkHttp2Test {
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    def body = HttpMethod.requiresRequestBody(method) ? RequestBody.create(MediaType.parse("text/plain"), "") : null
-    def request = new Request.Builder()
-      .url(uri.toURL())
-      .method(method, body)
-      .headers(Headers.of(HeadersUtil.headersToArray(headers)))
-      .build()
-
-    AtomicReference<Response> responseRef = new AtomicReference()
-    AtomicReference<Exception> exRef = new AtomicReference()
-    def latch = new CountDownLatch(1)
-
-    client.newCall(request).enqueue(new Callback() {
-      void onResponse(Response response) {
-        responseRef.set(response)
-        callback?.call()
-        latch.countDown()
-      }
-
-      void onFailure(Request req, IOException e) {
-        exRef.set(e)
-        latch.countDown()
-      }
-    })
-    latch.await(20, SECONDS)
-    if (exRef.get() != null) {
-      throw exRef.get()
-    }
-    return responseRef.get().code()
-  }
-
-  @Override
-  boolean testCausality() {
-    false
-  }
-}

instrumentation/okhttp/okhttp-2.2/javaagent/src/test/groovy/OkHttp2Test.groovy

@@ -3,15 +3,18 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import com.squareup.okhttp.Callback
 import com.squareup.okhttp.Headers
 import com.squareup.okhttp.MediaType
 import com.squareup.okhttp.OkHttpClient
 import com.squareup.okhttp.Request
 import com.squareup.okhttp.RequestBody
+import com.squareup.okhttp.Response
 import com.squareup.okhttp.internal.http.HttpMethod
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class OkHttp2Test extends HttpClientTest implements AgentTestTrait {
@@ -23,17 +26,33 @@ class OkHttp2Test extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
-    def body = HttpMethod.requiresRequestBody(method) ? RequestBody.create(MediaType.parse("text/plain"), "") : null
+    def response = client.newCall(buildRequest(method, uri, headers)).execute()
+    return response.code()
+  }
 
-    def request = new Request.Builder()
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    client.newCall(buildRequest(method, uri, headers)).enqueue(new Callback() {
+      @Override
+      void onFailure(Request request, IOException e) {
+        throw e
+      }
+
+      @Override
+      void onResponse(Response response) throws IOException {
+        callback.accept(response.code())
+      }
+    })
+  }
+
+  private static Request buildRequest(String method, URI uri, Map<String, String> headers) {
+    def body = HttpMethod.requiresRequestBody(method) ? RequestBody.create(MediaType.parse("text/plain"), "") : null
+    return new Request.Builder()
       .url(uri.toURL())
       .method(method, body)
       .headers(Headers.of(HeadersUtil.headersToArray(headers)))
       .build()
-    def response = client.newCall(request).execute()
-    callback?.call()
-    return response.code()
   }
 
   boolean testRedirects() {

instrumentation/okhttp/okhttp-3.0/javaagent/src/test/groovy/io/opentelemetry/javaagent/instrumentation/okhttp/v3_0/OkHttp3AsyncTest.groovy

@@ -1,17 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.javaagent.instrumentation.okhttp.v3_0
-
-import io.opentelemetry.instrumentation.okhttp.v3_0.AbstractOkHttp3AsyncTest
-import io.opentelemetry.instrumentation.test.AgentTestTrait
-import okhttp3.OkHttpClient
-
-class OkHttp3AsyncTest extends AbstractOkHttp3AsyncTest implements AgentTestTrait {
-  @Override
-  OkHttpClient.Builder configureClient(OkHttpClient.Builder clientBuilder) {
-    return clientBuilder
-  }
-}

instrumentation/okhttp/okhttp-3.0/library/src/test/groovy/io/opentelemetry/instrumentation/okhttp/v3_0/OkHttp3AsyncTest.groovy

@@ -1,25 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.instrumentation.okhttp.v3_0
-
-import io.opentelemetry.instrumentation.test.LibraryTestTrait
-import okhttp3.OkHttpClient
-import spock.lang.Ignore
-
-// Async test relies on javaagent concurrency instrumentation currently.
-@Ignore
-class OkHttp3AsyncTest extends AbstractOkHttp3AsyncTest implements LibraryTestTrait {
-  @Override
-  OkHttpClient.Builder configureClient(OkHttpClient.Builder clientBuilder) {
-    return clientBuilder.addInterceptor(OkHttpTracing.create(getOpenTelemetry()).newInterceptor())
-  }
-
-  // library instrumentation doesn't have a good way of suppressing nested CLIENT spans yet
-  @Override
-  boolean testWithClientParent() {
-    false
-  }
-}

instrumentation/okhttp/okhttp-3.0/library/src/test/groovy/io/opentelemetry/instrumentation/okhttp/v3_0/OkHttp3Test.groovy

@@ -19,4 +19,11 @@ class OkHttp3Test extends AbstractOkHttp3Test implements LibraryTestTrait {
   boolean testWithClientParent() {
     false
   }
+
+  // TODO(anuraaga): Enable after https://github.com/open-telemetry/opentelemetry-java/blob/main/context/src/main/java/io/opentelemetry/context/Context.java#L128
+  // is released.
+  @Override
+  boolean testCallback() {
+    false
+  }
 }

instrumentation/okhttp/okhttp-3.0/testing/src/main/groovy/io/opentelemetry/instrumentation/okhttp/v3_0/AbstractOkHttp3AsyncTest.groovy

@@ -1,61 +0,0 @@
-/*
- * Copyright The OpenTelemetry Authors
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package io.opentelemetry.instrumentation.okhttp.v3_0
-
-import static java.util.concurrent.TimeUnit.SECONDS
-
-import java.util.concurrent.CountDownLatch
-import java.util.concurrent.atomic.AtomicReference
-import okhttp3.Call
-import okhttp3.Callback
-import okhttp3.Headers
-import okhttp3.MediaType
-import okhttp3.Request
-import okhttp3.RequestBody
-import okhttp3.Response
-import okhttp3.internal.http.HttpMethod
-
-abstract class AbstractOkHttp3AsyncTest extends AbstractOkHttp3Test {
-
-  @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
-    def body = HttpMethod.requiresRequestBody(method) ? RequestBody.create(MediaType.parse("text/plain"), "") : null
-    def request = new Request.Builder()
-      .url(uri.toURL())
-      .method(method, body)
-      .headers(Headers.of(headers))
-      .build()
-
-    AtomicReference<Response> responseRef = new AtomicReference()
-    AtomicReference<Exception> exRef = new AtomicReference()
-    def latch = new CountDownLatch(1)
-
-    client.newCall(request).enqueue(new Callback() {
-      void onResponse(Call call, Response response) {
-        responseRef.set(response)
-        callback?.call()
-        latch.countDown()
-      }
-
-      void onFailure(Call call, IOException e) {
-        exRef.set(e)
-        latch.countDown()
-      }
-    })
-    // need to wait a while for tests of the connection timeout (20 seconds led to failures in CI)
-    latch.await(30, SECONDS)
-    if (exRef.get() != null) {
-      throw exRef.get()
-    }
-    return responseRef.get().code()
-  }
-
-  @Override
-  boolean testCausality() {
-    false
-  }
-
-}

instrumentation/okhttp/okhttp-3.0/testing/src/main/groovy/io/opentelemetry/instrumentation/okhttp/v3_0/AbstractOkHttp3Test.groovy

@@ -7,11 +7,15 @@ package io.opentelemetry.instrumentation.okhttp.v3_0
 
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
+import okhttp3.Call
+import okhttp3.Callback
 import okhttp3.Headers
 import okhttp3.MediaType
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.RequestBody
+import okhttp3.Response
 import okhttp3.internal.http.HttpMethod
 import spock.lang.Shared
 
@@ -27,15 +31,34 @@ abstract class AbstractOkHttp3Test extends HttpClientTest {
     .build()
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    def request = buildRequest(method, uri, headers)
+    def response = client.newCall(request).execute()
+    return response.code()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    def request = buildRequest(method, uri, headers)
+    client.newCall(request).enqueue(new Callback() {
+      @Override
+      void onFailure(Call call, IOException e) {
+        throw e
+      }
+
+      @Override
+      void onResponse(Call call, Response response) throws IOException {
+        callback.accept(response.code())
+      }
+    })
+  }
+
+  private static Request buildRequest(String method, URI uri, Map<String, String> headers) {
     def body = HttpMethod.requiresRequestBody(method) ? RequestBody.create(MediaType.parse("text/plain"), "") : null
-    def request = new Request.Builder()
+    return new Request.Builder()
       .url(uri.toURL())
       .method(method, body)
       .headers(Headers.of(headers)).build()
-    def response = client.newCall(request).execute()
-    callback?.call()
-    return response.code()
   }
 
   boolean testRedirects() {

instrumentation/play-ws/play-ws-testing/src/main/groovy/PlayWsClientTestBase.groovy

@@ -3,16 +3,20 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import java.util.concurrent.CompletionStage
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import play.libs.ws.StandaloneWSClient
 import play.libs.ws.StandaloneWSRequest
 import play.libs.ws.StandaloneWSResponse
 import play.libs.ws.ahc.StandaloneAhcWSClient
+import scala.Function1
 import scala.collection.JavaConverters
 import scala.concurrent.Await
 import scala.concurrent.ExecutionContext
 import scala.concurrent.Future
 import scala.concurrent.duration.Duration
+import scala.util.Try
 import spock.lang.Shared
 
 class PlayJavaWsClientTestBase extends PlayWsClientTestBaseBase {
@@ -20,16 +24,22 @@ class PlayJavaWsClientTestBase extends PlayWsClientTestBaseBase {
   StandaloneWSClient wsClient
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    return sendRequest(method, uri, headers).toCompletableFuture().get().status
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers).thenAccept {
+      callback.accept(it.status)
+    }
+  }
+
+  private CompletionStage<StandaloneWSResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
     StandaloneWSRequest wsRequest = wsClient.url(uri.toURL().toString()).setFollowRedirects(true)
 
     headers.entrySet().each { entry -> wsRequest.addHeader(entry.getKey(), entry.getValue()) }
-    StandaloneWSResponse wsResponse = wsRequest.setMethod(method).execute()
+    return wsRequest.setMethod(method).execute()
-      .whenComplete({ response, throwable ->
-        callback?.call()
-      }).toCompletableFuture().get(5, TimeUnit.SECONDS)
-
-    return wsResponse.getStatus()
   }
 
   def setupSpec() {
@@ -46,19 +56,30 @@ class PlayJavaStreamedWsClientTestBase extends PlayWsClientTestBaseBase {
   StandaloneWSClient wsClient
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    return sendRequest(method, uri, headers).toCompletableFuture().get().status
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers).thenAccept {
+      callback.accept(it.status)
+    }
+  }
+
+  private CompletionStage<StandaloneWSResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
     StandaloneWSRequest wsRequest = wsClient.url(uri.toURL().toString()).setFollowRedirects(true)
 
     headers.entrySet().each { entry -> wsRequest.addHeader(entry.getKey(), entry.getValue()) }
-    StandaloneWSResponse wsResponse = wsRequest.setMethod(method).stream()
+    CompletionStage<StandaloneWSResponse> stream = wsRequest.setMethod(method).stream()
-      .whenComplete({ response, throwable ->
-        callback?.call()
-      }).toCompletableFuture().get(5, TimeUnit.SECONDS)
-
     // The status can be ready before the body so explicitly call wait for body to be ready
-    wsResponse.getBodyAsSource().runFold("", { acc, out -> "" }, materializer)
+    return stream
-      .toCompletableFuture().get(5, TimeUnit.SECONDS)
+      .thenCompose { StandaloneWSResponse response ->
-    return wsResponse.getStatus()
+        response.getBodyAsSource().runFold("", { acc, out -> "" }, materializer)
+      }
+      .thenCombine(stream) { String body, StandaloneWSResponse response ->
+        response
+      }
   }
 
   def setupSpec() {
@@ -75,20 +96,30 @@ class PlayScalaWsClientTestBase extends PlayWsClientTestBaseBase {
   play.api.libs.ws.StandaloneWSClient wsClient
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
-    Future<play.api.libs.ws.StandaloneWSResponse> futureResponse = wsClient.url(uri.toURL().toString())
+    Future<play.api.libs.ws.StandaloneWSResponse> futureResponse = sendRequest(method, uri, headers)
+    play.api.libs.ws.StandaloneWSResponse wsResponse = Await.result(futureResponse, Duration.apply(5, TimeUnit.SECONDS))
+    return wsResponse.status()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    Future<play.api.libs.ws.StandaloneWSResponse> futureResponse = sendRequest(method, uri, headers)
+    futureResponse.onComplete(new Function1<Try<play.api.libs.ws.StandaloneWSResponse>, Void>() {
+      @Override
+      Void apply(Try<play.api.libs.ws.StandaloneWSResponse> response) {
+        callback.accept(response.get().status())
+        return null
+      }
+    }, ExecutionContext.global())
+  }
+
+  private Future<play.api.libs.ws.StandaloneWSResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
+    return wsClient.url(uri.toURL().toString())
       .withMethod(method)
       .withFollowRedirects(true)
       .withHttpHeaders(JavaConverters.mapAsScalaMap(headers).toSeq())
       .execute()
-      .transform({ theTry ->
-        callback?.call()
-        theTry
-      }, ExecutionContext.global())
-
-    play.api.libs.ws.StandaloneWSResponse wsResponse = Await.result(futureResponse, Duration.apply(5, TimeUnit.SECONDS))
-
-    return wsResponse.status()
   }
 
   def setupSpec() {
@@ -105,24 +136,43 @@ class PlayScalaStreamedWsClientTestBase extends PlayWsClientTestBaseBase {
   play.api.libs.ws.StandaloneWSClient wsClient
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
+    Future<play.api.libs.ws.StandaloneWSResponse> futureResponse = sendRequest(method, uri, headers)
+    play.api.libs.ws.StandaloneWSResponse wsResponse = Await.result(futureResponse, Duration.apply(5, TimeUnit.SECONDS))
+    return wsResponse.status()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    Future<play.api.libs.ws.StandaloneWSResponse> futureResponse = sendRequest(method, uri, headers)
+    futureResponse.onComplete(new Function1<Try<play.api.libs.ws.StandaloneWSResponse>, Void>() {
+      @Override
+      Void apply(Try<play.api.libs.ws.StandaloneWSResponse> response) {
+        callback.accept(response.get().status())
+        return null
+      }
+    }, ExecutionContext.global())
+  }
+
+  private Future<play.api.libs.ws.StandaloneWSResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
     Future<play.api.libs.ws.StandaloneWSResponse> futureResponse = wsClient.url(uri.toURL().toString())
       .withMethod(method)
       .withFollowRedirects(true)
       .withHttpHeaders(JavaConverters.mapAsScalaMap(headers).toSeq())
       .stream()
-      .transform({ theTry ->
-        callback?.call()
-        theTry
-      }, ExecutionContext.global())
-
-    play.api.libs.ws.StandaloneWSResponse wsResponse = Await.result(futureResponse, Duration.apply(5, TimeUnit.SECONDS))
-
     // The status can be ready before the body so explicitly call wait for body to be ready
-    Await.result(
+    Future<String> bodyResponse = futureResponse.flatMap(new Function1<play.api.libs.ws.StandaloneWSResponse, Future<String>>() {
-      wsResponse.bodyAsSource().runFold("", { acc, out -> "" }, materializer),
+      @Override
-      Duration.apply(5, TimeUnit.SECONDS))
+      Future<String> apply(play.api.libs.ws.StandaloneWSResponse wsResponse) {
-    return wsResponse.status()
+        return wsResponse.bodyAsSource().runFold("", { acc, out -> "" }, materializer)
+      }
+    }, ExecutionContext.global())
+    return bodyResponse.flatMap(new Function1<String, Future<play.api.libs.ws.StandaloneWSResponse>>() {
+      @Override
+      Future<play.api.libs.ws.StandaloneWSResponse> apply(String v1) {
+        return futureResponse
+      }
+    }, ExecutionContext.global())
   }
 
   def setupSpec() {

instrumentation/play/play-2.3/javaagent/src/test/groovy/client/PlayWsClientTest.groovy

@@ -8,8 +8,12 @@ package client
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import play.GlobalSettings
+import play.libs.F
 import play.libs.ws.WS
+import play.libs.ws.WSClient
+import play.libs.ws.WSResponse
 import play.test.FakeApplication
 import play.test.Helpers
 import spock.lang.Shared
@@ -27,7 +31,7 @@ class PlayWsClientTest extends HttpClientTest implements AgentTestTrait {
   )
 
   @Shared
-  def client
+  WSClient client
 
   def setupSpec() {
     Helpers.start(application)
@@ -39,19 +43,23 @@ class PlayWsClientTest extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    return sendRequest(method, uri, headers).get(1, TimeUnit.SECONDS).status
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers).onRedeem {
+      callback.accept(it.status)
+    }
+  }
+
+  private F.Promise<WSResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
     def request = client.url(uri.toString())
     headers.entrySet().each {
       request.setHeader(it.key, it.value)
     }
-
+    return request.execute(method)
-    def status = request.execute(method).map({
-      callback?.call()
-      it
-    }).map({
-      it.status
-    })
-    return status.get(1, TimeUnit.SECONDS)
   }
 
   @Override

instrumentation/play/play-2.4/javaagent/src/test/groovy/client/PlayWsClientTest.groovy

@@ -7,7 +7,10 @@ package client
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.concurrent.CompletionStage
+import java.util.function.Consumer
 import play.libs.ws.WS
+import play.libs.ws.WSResponse
 import spock.lang.AutoCleanup
 import spock.lang.Shared
 import spock.lang.Subject
@@ -21,19 +24,24 @@ class PlayWsClientTest extends HttpClientTest implements AgentTestTrait {
   def client = WS.newClient(-1)
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    return sendRequest(method, uri, headers).toCompletableFuture().get().status
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers).thenAccept {
+      callback.accept(it.status)
+    }
+  }
+
+  private CompletionStage<WSResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
     def request = client.url(uri.toString())
     headers.entrySet().each {
       request.setHeader(it.key, it.value)
     }
 
-    def status = request.execute(method).thenApply {
+    return request.execute(method)
-      callback?.call()
-      it
-    }.thenApply {
-      it.status
-    }
-    return status.toCompletableFuture().get()
   }
 
   //TODO see https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/2347

instrumentation/ratpack-1.4/javaagent/src/test/groovy/client/RatpackForkedHttpClientTest.groovy

@@ -5,14 +5,29 @@
 
 package client
 
-
+import java.util.function.Consumer
-import ratpack.exec.ExecResult
+import ratpack.exec.Operation
+import ratpack.exec.Promise
 
 class RatpackForkedHttpClientTest extends RatpackHttpClientTest {
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
-    ExecResult<Integer> result = exec.yield {
+    exec.yield {
+      sendRequest(method, uri, headers)
+    }.value
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    exec.execute(Operation.of {
+      sendRequest(method, uri, headers).result {
+        callback.accept(it.value)
+      }
+    })
+  }
+
+  private Promise<Integer> sendRequest(String method, URI uri, Map<String, String> headers) {
     def resp = client.request(uri) { spec ->
       spec.method(method)
       spec.headers { headersSpec ->
@@ -22,10 +37,7 @@ class RatpackForkedHttpClientTest extends RatpackHttpClientTest {
       }
     }
     return resp.fork().map {
-        callback?.call()
       it.status.code
     }
   }
-    return result.value
-  }
 }

instrumentation/ratpack-1.4/javaagent/src/test/groovy/client/RatpackHttpClientTest.groovy

@@ -8,7 +8,9 @@ package client
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
 import java.time.Duration
-import ratpack.exec.ExecResult
+import java.util.function.Consumer
+import ratpack.exec.Operation
+import ratpack.exec.Promise
 import ratpack.http.client.HttpClient
 import ratpack.test.exec.ExecHarness
 import spock.lang.AutoCleanup
@@ -27,8 +29,22 @@ class RatpackHttpClientTest extends HttpClientTest implements AgentTestTrait {
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    ExecResult<Integer> result = exec.yield {
+    return exec.yield {
+      sendRequest(method, uri, headers)
+    }.value
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    exec.execute(Operation.of {
+      sendRequest(method, uri, headers).result {
+        callback.accept(it.value)
+      }
+    })
+  }
+
+  private Promise<Integer> sendRequest(String method, URI uri, Map<String, String> headers) {
     def resp = client.request(uri) { spec ->
       spec.connectTimeout(Duration.ofSeconds(2))
       spec.method(method)
@@ -39,12 +55,9 @@ class RatpackHttpClientTest extends HttpClientTest implements AgentTestTrait {
       }
     }
     return resp.map {
-        callback?.call()
       it.status.code
     }
   }
-    return result.value
-  }
 
   @Override
   boolean testRedirects() {

instrumentation/reactor-netty-0.9/javaagent/src/test/groovy/AbstractReactorNettyHttpClientTest.groovy

@@ -5,6 +5,8 @@
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
+import reactor.core.publisher.Mono
 import reactor.netty.http.client.HttpClient
 import reactor.netty.http.client.HttpClientResponse
 
@@ -31,19 +33,27 @@ abstract class AbstractReactorNettyHttpClientTest extends HttpClientTest impleme
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers = [:], Closure callback = null) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    HttpClientResponse resp = createHttpClient()
+    Mono<HttpClientResponse> response = sendRequest(method, uri, headers)
+    return response.block().status().code()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    Mono<HttpClientResponse> response = sendRequest(method, uri, headers)
+    response.subscribe {
+      callback.accept(it.status().code())
+    }
+  }
+
+  Mono<HttpClientResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
+    return createHttpClient()
       .followRedirect(true)
       .headers({ h -> headers.each { k, v -> h.add(k, v) } })
       .baseUrl(server.address.toString())
       ."${method.toLowerCase()}"()
       .uri(uri.toString())
       .response()
-      .block()
-    if (callback != null) {
-      callback.call()
-    }
-    return resp.status().code()
   }
 
   abstract HttpClient createHttpClient()

instrumentation/reactor-netty-1.0/javaagent/src/test/groovy/AbstractReactorNettyHttpClientTest.groovy

@@ -5,6 +5,8 @@
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
+import reactor.core.publisher.Mono
 import reactor.netty.http.client.HttpClient
 import reactor.netty.http.client.HttpClientResponse
 
@@ -31,19 +33,27 @@ abstract class AbstractReactorNettyHttpClientTest extends HttpClientTest impleme
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers = [:], Closure callback = null) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    HttpClientResponse resp = createHttpClient()
+    Mono<HttpClientResponse> response = sendRequest(method, uri, headers)
+    return response.block().status().code()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    Mono<HttpClientResponse> response = sendRequest(method, uri, headers)
+    response.subscribe {
+      callback.accept(it.status().code())
+    }
+  }
+
+  Mono<HttpClientResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
+    return createHttpClient()
       .followRedirect(true)
       .headers({ h -> headers.each { k, v -> h.add(k, v) } })
       .baseUrl(server.address.toString())
       ."${method.toLowerCase()}"()
       .uri(uri.toString())
       .response()
-      .block()
-    if (callback != null) {
-      callback.call()
-    }
-    return resp.status().code()
   }
 
   abstract HttpClient createHttpClient()

instrumentation/spring/spring-web-3.1/library/src/test/groovy/RestTemplateInstrumentationTest.groovy

@@ -6,7 +6,11 @@
 import io.opentelemetry.instrumentation.spring.httpclients.RestTemplateInterceptor
 import io.opentelemetry.instrumentation.test.LibraryTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
+import org.springframework.http.HttpEntity
+import org.springframework.http.HttpHeaders
 import org.springframework.http.HttpMethod
+import org.springframework.http.ResponseEntity
 import org.springframework.web.client.ResourceAccessException
 import org.springframework.web.client.RestTemplate
 import spock.lang.Shared
@@ -23,19 +27,27 @@ class RestTemplateInstrumentationTest extends HttpClientTest implements LibraryT
   }
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
     try {
-      return restTemplate.execute(uri, HttpMethod.valueOf(method), { request ->
+      def httpHeaders = new HttpHeaders()
-        headers.forEach(request.getHeaders().&add)
+      headers.each { httpHeaders.put(it.key, [it.value]) }
-      }, { response ->
+      def request = new HttpEntity<String>(httpHeaders)
-        callback?.call()
+      ResponseEntity<String> response = restTemplate.exchange(uri, HttpMethod.valueOf(method), request, String)
-        response.statusCode.value()
+      return response.statusCode.value()
-      })
     } catch (ResourceAccessException exception) {
       throw exception.getCause()
     }
   }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    restTemplate.execute(uri, HttpMethod.valueOf(method), { request ->
+      headers.forEach(request.getHeaders().&add)
+    }, { response ->
+      callback.accept(response.statusCode.value())
+    })
+  }
+
   @Override
   boolean testCircularRedirects() {
     false

instrumentation/spring/spring-webflux-5.0/javaagent/src/test/groovy/client/SpringWebfluxHttpClientTest.groovy

@@ -7,24 +7,31 @@ package client
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import java.util.function.Consumer
 import org.springframework.http.HttpMethod
 import org.springframework.web.reactive.function.client.ClientResponse
 import org.springframework.web.reactive.function.client.WebClient
+import reactor.core.publisher.Mono
 
 class SpringWebfluxHttpClientTest extends HttpClientTest implements AgentTestTrait {
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
-    ClientResponse response = WebClient.builder().build().method(HttpMethod.resolve(method))
+    return sendRequest(method, uri, headers).block().statusCode().value()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers).subscribe {
+      callback.accept(it.statusCode().value())
+    }
+  }
+
+  private static Mono<ClientResponse> sendRequest(String method, URI uri, Map<String, String> headers) {
+    return WebClient.builder().build().method(HttpMethod.resolve(method))
       .uri(uri)
       .headers { h -> headers.forEach({ key, value -> h.add(key, value) }) }
       .exchange()
-      .doAfterSuccessOrError { res, ex ->
-        callback?.call()
-      }
-      .block()
-
-    response.statusCode().value()
   }
 
   boolean testRedirects() {

instrumentation/vertx-reactive-3.5/javaagent/src/test/groovy/client/VertxRxCircuitBreakerWebClientTest.groovy

@@ -13,8 +13,10 @@ import io.vertx.core.http.HttpMethod
 import io.vertx.ext.web.client.WebClientOptions
 import io.vertx.reactivex.circuitbreaker.CircuitBreaker
 import io.vertx.reactivex.core.Vertx
+import io.vertx.reactivex.ext.web.client.HttpRequest
 import io.vertx.reactivex.ext.web.client.WebClient
 import java.util.concurrent.CompletableFuture
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class VertxRxCircuitBreakerWebClientTest extends HttpClientTest implements AgentTestTrait {
@@ -32,12 +34,19 @@ class VertxRxCircuitBreakerWebClientTest extends HttpClientTest implements Agent
   )
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers = [:]) {
-    def request = client.request(HttpMethod.valueOf(method), uri.port, uri.host, "$uri")
+    // VertxRx doesn't seem to provide a synchronous API at all for circuit breaker. Bridge through
-    headers.each { request.putHeader(it.key, it.value) }
+    // a callback.
-
+    CompletableFuture<Integer> future = new CompletableFuture<>()
-    def future = new CompletableFuture<Integer>()
+    doRequestWithCallback(method, uri, headers) {
+      future.complete(it)
+    }
+    return future.get()
+  }
 
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    def request = buildRequest(method, uri, headers)
     breaker.executeCommand({command ->
       request.rxSend().doOnSuccess {
         command.complete(it)
@@ -45,14 +54,14 @@ class VertxRxCircuitBreakerWebClientTest extends HttpClientTest implements Agent
         command.fail(it)
       }.subscribe()
     }, {
-      callback?.call()
+      callback.accept(it.result().statusCode())
-      if (it.succeeded()) {
-        future.complete(it.result().statusCode())
-      } else {
-        future.completeExceptionally(it.cause())
-      }
     })
-    return future.get()
+  }
+
+  private HttpRequest<?> buildRequest(String method, URI uri, Map<String, String> headers) {
+    def request = client.request(HttpMethod.valueOf(method), uri.port, uri.host, "$uri")
+    headers.each { request.putHeader(it.key, it.value) }
+    return request
   }
 
   @Override

instrumentation/vertx-reactive-3.5/javaagent/src/test/groovy/client/VertxRxWebClientTest.groovy

@@ -7,11 +7,14 @@ package client
 
 import io.opentelemetry.instrumentation.test.AgentTestTrait
 import io.opentelemetry.instrumentation.test.base.HttpClientTest
+import io.reactivex.Single
 import io.vertx.core.VertxOptions
 import io.vertx.core.http.HttpMethod
 import io.vertx.ext.web.client.WebClientOptions
 import io.vertx.reactivex.core.Vertx
+import io.vertx.reactivex.ext.web.client.HttpResponse
 import io.vertx.reactivex.ext.web.client.WebClient
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class VertxRxWebClientTest extends HttpClientTest implements AgentTestTrait {
@@ -24,15 +27,25 @@ class VertxRxWebClientTest extends HttpClientTest implements AgentTestTrait {
   WebClient client = WebClient.create(vertx, clientOptions)
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
+    return sendRequest(method, uri, headers).blockingGet().statusCode()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    sendRequest(method, uri, headers)
+      .subscribe(new io.reactivex.functions.Consumer<HttpResponse<?>>() {
+        @Override
+        void accept(HttpResponse<?> httpResponse) throws Exception {
+          callback.accept(httpResponse.statusCode())
+        }
+      })
+  }
+
+  private Single<HttpResponse<?>> sendRequest(String method, URI uri, Map<String, String> headers) {
     def request = client.request(HttpMethod.valueOf(method), uri.port, uri.host, "$uri")
     headers.each { request.putHeader(it.key, it.value) }
-    return request
+    return request.rxSend()
-      .rxSend()
-      .doOnSuccess { response -> callback?.call() }
-      .map { it.statusCode() }
-      .toObservable()
-      .blockingFirst()
   }
 
   @Override

instrumentation/vertx-web-3.0/javaagent/src/test/groovy/client/VertxHttpClientTest.groovy

@@ -11,9 +11,9 @@ import io.opentelemetry.instrumentation.test.base.SingleConnection
 import io.vertx.core.Vertx
 import io.vertx.core.VertxOptions
 import io.vertx.core.http.HttpClientOptions
-import io.vertx.core.http.HttpClientResponse
 import io.vertx.core.http.HttpMethod
 import java.util.concurrent.CompletableFuture
+import java.util.function.Consumer
 import spock.lang.Shared
 
 class VertxHttpClientTest extends HttpClientTest implements AgentTestTrait {
@@ -26,17 +26,23 @@ class VertxHttpClientTest extends HttpClientTest implements AgentTestTrait {
   def httpClient = vertx.createHttpClient(clientOptions)
 
   @Override
-  int doRequest(String method, URI uri, Map<String, String> headers, Closure callback) {
+  int doRequest(String method, URI uri, Map<String, String> headers) {
-    CompletableFuture<HttpClientResponse> future = new CompletableFuture<>()
+    // Vertx doesn't seem to provide any synchronous API so bridge through a callback
+    CompletableFuture<Integer> future = new CompletableFuture<>()
+    doRequestWithCallback(method, uri, headers) {
+      future.complete(it)
+    }
+    return future.get()
+  }
+
+  @Override
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
     def request = httpClient.request(HttpMethod.valueOf(method), uri.port, uri.host, "$uri")
     headers.each { request.putHeader(it.key, it.value) }
     request.handler { response ->
-      callback?.call()
+      callback.accept(response.statusCode())
-      future.complete(response)
     }
     request.end()
-
-    return future.get().statusCode()
   }
 
   @Override

testing-common/src/main/groovy/io/opentelemetry/instrumentation/test/base/HttpClientTest.groovy

@@ -27,10 +27,12 @@ import io.opentelemetry.semconv.trace.attributes.SemanticAttributes
 import java.util.concurrent.CountDownLatch
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.Executors
+import java.util.function.Consumer
 import spock.lang.AutoCleanup
 import spock.lang.Requires
 import spock.lang.Shared
 import spock.lang.Unroll
+import spock.util.concurrent.BlockingVariable
 
 @Unroll
 abstract class HttpClientTest extends InstrumentationSpecification {
@@ -86,11 +88,60 @@ abstract class HttpClientTest extends InstrumentationSpecification {
   }
 
   /**
-   * Make the request and return the status code response
+   * Make the request and return the status code of the response synchronously. Some clients, e.g.,
-   * @param method
+   * HTTPUrlConnection only support synchronous execution without callbacks, and many offer a
-   * @return
+   * dedicated API for invoking synchronously, such as OkHttp's execute method. When implementing
+   * this method, such an API should be used and the HTTP status code of the response returned,
+   * for example:
+   *
+   * @Override
+   * int doRequest(String method, URI uri, Map<String, String headers = [:]) {
+   *   HttpResponse response = client.execute(new Request(method, uri, headers))
+   *   return response.statusCode()
+   * }
+   *
+   * If there is no synchronous API available at all, for example as in Vert.X, a CompletableFuture
+   * can be used to block on a result, for example:
+   *
+   * @Override
+   * int doRequest(String method, URI uri, Map<String, String headers = [:]) {
+   *   CompletableFuture<Integer> result = new CompletableFuture<>()
+   *   doRequestWithCallback(method, uri, headers) {
+   *     result.complete(it.statusCode())
+   *   }
+   *   return result.join()
+   * }
    */
-  abstract int doRequest(String method, URI uri, Map<String, String> headers = [:], Closure callback = null)
+  abstract int doRequest(String method, URI uri, Map<String, String> headers = [:])
+
+  /**
+   * Maks the request and return the status code of the response through the callback. This method
+   * should be implemented if the client offers any request execution methods that accept a callback
+   * which receives the response. This will generally be an API for asynchronous execution of a
+   * request, such as OkHttp's enqueue method, but may also be a callback executed synchronously,
+   * such as ApacheHttpClient's response handler callbacks. This method is used in tests to verify
+   * the context is propagated correctly to such callbacks.
+   *
+   * @Override
+   * void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+   *   // Hypothetical client accepting a callback
+   *   client.executeAsync(new Request(method, uri, headers)) {
+   *     callback.accept(it.statusCode())
+   *   }
+   *
+   *   // Hypothetical client returning a CompletableFuture
+   *   client.executeAsync(new Request(method, uri, headers)).thenAccept {
+   *     callback.accept(it.statusCode())
+   *   }
+   * }
+   *
+   * If the client offers no APIs that accept callbacks, then this method should not be implemented
+   * and instead, {@link #testCallback} should be implemented to return false.
+   */
+  void doRequestWithCallback(String method, URI uri, Map<String, String> headers = [:], Consumer<Integer> callback) {
+    // Must be implemented if testAsync is true
+    throw new UnsupportedOperationException()
+  }
 
   Integer statusOnRedirectError() {
     return null
@@ -195,17 +246,21 @@ abstract class HttpClientTest extends InstrumentationSpecification {
 
   def "trace request with callback and parent"() {
     given:
+    assumeTrue(testCallback())
     assumeTrue(testCallbackWithParent())
 
+    def status = new BlockingVariable<Integer>()
+
     when:
-    def status = runUnderTrace("parent") {
+    runUnderTrace("parent") {
-      doRequest(method, server.address.resolve("/success"), ["is-test-server": "false"]) {
+      doRequestWithCallback(method, server.address.resolve("/success"), ["is-test-server": "false"]) {
         runUnderTrace("child") {}
+        status.set(it)
       }
     }
 
     then:
-    status == 200
+    status.get() == 200
     // only one trace (client).
     assertTraces(1) {
       trace(0, 3 + extraClientSpans()) {
@@ -220,14 +275,20 @@ abstract class HttpClientTest extends InstrumentationSpecification {
   }
 
   def "trace request with callback and no parent"() {
+    given:
+    assumeTrue(testCallback())
+
+    def status = new BlockingVariable<Integer>()
+
     when:
-    def status = doRequest(method, server.address.resolve("/success"), ["is-test-server": "false"]) {
+    doRequestWithCallback(method, server.address.resolve("/success"), ["is-test-server": "false"]) {
       runUnderTrace("callback") {
       }
+      status.set(it)
     }
 
     then:
-    status == 200
+    status.get() == 200
     // only one trace (client).
     assertTraces(2) {
       trace(0, 1 + extraClientSpans()) {
@@ -656,6 +717,10 @@ abstract class HttpClientTest extends InstrumentationSpecification {
     true
   }
 
+  boolean testCallback() {
+    return true
+  }
+
   boolean testCallbackWithParent() {
     // FIXME: this hack is here because callback with parent is broken in play-ws when the stream()
     // function is used.  There is no way to stop a test from a derived class hence the flag