Ensure tilde$1 onExit is run in correct order

instrumentation/pekko/pekko-http-1.0/javaagent/build.gradle.kts

@@ -31,11 +31,14 @@ dependencies {
   library("org.apache.pekko:pekko-http_2.12:1.0.0")
   library("org.apache.pekko:pekko-stream_2.12:1.0.1")
 
+  testImplementation("com.softwaremill.sttp.tapir:tapir-pekko-http-server_2.12:1.7.0")
+
   testInstrumentation(project(":instrumentation:pekko:pekko-actor-1.0:javaagent"))
   testInstrumentation(project(":instrumentation:executors:javaagent"))
 
-  latestDepTestLibrary("org.apache.pekko:pekko-http_2.13:+")
-  latestDepTestLibrary("org.apache.pekko:pekko-stream_2.13:+")
+  latestDepTestLibrary("org.apache.pekko:pekko-http_2.13:latest.release")
+  latestDepTestLibrary("org.apache.pekko:pekko-stream_2.13:latest.release")
+  latestDepTestLibrary("com.softwaremill.sttp.tapir:tapir-pekko-http-server_2.13:latest.release")
 }
 
 tasks {
@@ -56,6 +59,7 @@ if (findProperty("testLatestDeps") as Boolean) {
     testImplementation {
       exclude("org.apache.pekko", "pekko-http_2.12")
       exclude("org.apache.pekko", "pekko-stream_2.12")
+      exclude("com.softwaremill.sttp.tapir", "tapir-pekko-http-server_2.12")
     }
   }
 }

instrumentation/pekko/pekko-http-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/pekkohttp/v1_0/server/route/RestoreOnExit.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.javaagent.instrumentation.pekkohttp.v1_0.server.route;
+
+import org.apache.pekko.http.scaladsl.server.RouteResult;
+import scala.PartialFunction;
+import scala.Unit;
+import scala.util.Try;
+
+public class RestoreOnExit implements PartialFunction<Try<RouteResult>, Unit> {
+  @Override
+  public boolean isDefinedAt(Try<RouteResult> x) {
+    return true;
+  }
+
+  @Override
+  public Unit apply(Try<RouteResult> v1) {
+    PekkoRouteHolder.restore();
+    return null;
+  }
+}

instrumentation/pekko/pekko-http-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/pekkohttp/v1_0/server/route/RouteConcatenationInstrumentation.java

@@ -12,6 +12,9 @@
 import net.bytebuddy.asm.Advice;
 import net.bytebuddy.description.type.TypeDescription;
 import net.bytebuddy.matcher.ElementMatcher;
+import org.apache.pekko.http.scaladsl.server.RequestContext;
+import org.apache.pekko.http.scaladsl.server.RouteResult;
+import scala.concurrent.Future;
 
 public class RouteConcatenationInstrumentation implements TypeInstrumentation {
   @Override
@@ -39,8 +42,15 @@ public static void onEnter() {
     }
 
     @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
-    public static void onExit() {
-      PekkoRouteHolder.restore();
+    public static void onExit(
+        @Advice.Argument(value = 2) RequestContext ctx,
+        @Advice.Return(readOnly = false) Future<RouteResult> future,
+        @Advice.Thrown Throwable throwable) {
+      if (throwable != null) {
+        PekkoRouteHolder.restore();
+      } else {
+        future = future.andThen(new RestoreOnExit(), ctx.executionContext());
+      }
     }
   }
 

instrumentation/pekko/pekko-http-1.0/javaagent/src/test/scala/io/opentelemetry/javaagent/instrumentation/pekkohttp/v1_0/PekkoHttpServerRouteTest.scala

@@ -31,8 +31,10 @@ import org.junit.jupiter.api.{AfterAll, Test, TestInstance}
 
 import java.net.{URI, URISyntaxException}
 import java.util.function.Consumer
-import scala.concurrent.Await
+import scala.concurrent.{Await, ExecutionContext, Future}
 import scala.concurrent.duration.DurationInt
+import sttp.tapir._
+import sttp.tapir.server.pekkohttp.PekkoHttpServerInterpreter
 
 @TestInstance(TestInstance.Lifecycle.PER_CLASS)
 class PekkoHttpServerRouteTest {
@@ -77,6 +79,26 @@ class PekkoHttpServerRouteTest {
     test(route, "/test/1", "GET /test/*")
   }
 
+  @Test def testTapirRoutes(): Unit = {
+    val interpreter = PekkoHttpServerInterpreter()(system.dispatcher)
+    def makeRoute(input: EndpointInput[Unit]) = {
+      interpreter.toRoute(
+        endpoint.get
+          .in(input)
+          .errorOut(stringBody)
+          .out(stringBody)
+          .serverLogicPure[Future](_ => Right("ok"))
+      )
+    }
+
+    val routes = concat(
+      concat(makeRoute("test" / "1"), makeRoute("test" / "2")),
+      concat(makeRoute("test" / "3"), makeRoute("test" / "4"))
+    )
+
+    test(routes, "/test/4", "GET")
+  }
+
   def test(route: Route, path: String, spanName: String): Unit = {
     val port = PortUtils.findOpenPort
     val address: URI = buildAddress(port)