Fix Restlet v2 `Message#getAttributes` calls (#6796)

Fixes #6563

gradle-plugins/src/main/kotlin/io.opentelemetry.instrumentation.muzzle-check.gradle.kts

@@ -132,26 +132,6 @@ tasks.register("printMuzzleReferences") {
   }
 }
 
-val projectRepositories = mutableListOf<RemoteRepository>().apply {
-  // Manually add mavenCentral until https://github.com/gradle/gradle/issues/17295
-  // Adding mavenLocal is much more complicated but hopefully isn't required for normal usage of
-  // Muzzle.
-  add(
-    RemoteRepository.Builder(
-      "MavenCentral", "default", "https://repo.maven.apache.org/maven2/")
-      .build())
-  for (repository in repositories) {
-    if (repository is MavenArtifactRepository) {
-      add(
-        RemoteRepository.Builder(
-          repository.getName(),
-          "default",
-          repository.url.toString())
-          .build())
-    }
-  }
-}.toList()
-
 val hasRelevantTask = gradle.startParameter.taskNames.any {
   // removing leading ':' if present
   val taskName = it.removePrefix(":")
@@ -167,18 +147,21 @@ if (hasRelevantTask) {
   afterEvaluate {
     var runAfter = muzzle
 
+    // the project repositories need to be retrieved after evaluation, before that the list is just empty
+    val projectRepositories = getProjectRepositories(project)
+
     for (muzzleDirective in muzzleConfig.directives.get()) {
-      logger.info("configured ${muzzleDirective}")
+      logger.info("configured $muzzleDirective")
 
       if (muzzleDirective.coreJdk.get()) {
         runAfter = addMuzzleTask(muzzleDirective, null, runAfter)
       } else {
-        for (singleVersion in muzzleDirectiveToArtifacts(muzzleDirective, system, session)) {
+        for (singleVersion in muzzleDirectiveToArtifacts(muzzleDirective, system, session, projectRepositories)) {
           runAfter = addMuzzleTask(muzzleDirective, singleVersion, runAfter)
         }
         if (muzzleDirective.assertInverse.get()) {
-          for (inverseDirective in inverseOf(muzzleDirective, system, session)) {
-            for (singleVersion in muzzleDirectiveToArtifacts(inverseDirective, system, session)) {
+          for (inverseDirective in inverseOf(muzzleDirective, system, session, projectRepositories)) {
+            for (singleVersion in muzzleDirectiveToArtifacts(inverseDirective, system, session, projectRepositories)) {
               runAfter = addMuzzleTask(inverseDirective, singleVersion, runAfter)
             }
           }
@@ -188,6 +171,18 @@ if (hasRelevantTask) {
   }
 }
 
+fun getProjectRepositories(project: Project): List<RemoteRepository> {
+  return project.repositories
+    .filterIsInstance<MavenArtifactRepository>()
+    .map {
+      RemoteRepository.Builder(
+        it.name,
+        "default",
+        it.url.toString())
+        .build()
+    }
+}
+
 fun createInstrumentationClassloader(): ClassLoader {
   logger.info("Creating instrumentation class loader for: $path")
   val muzzleShadowJar = shadowModule.get().archiveFile.get()
@@ -309,7 +304,7 @@ fun createClassLoaderForTask(muzzleTaskConfiguration: Configuration): ClassLoade
   return classpathLoader(muzzleTaskConfiguration + files(muzzleBootstrapShadowJar), ClassLoader.getPlatformClassLoader())
 }
 
-fun inverseOf(muzzleDirective: MuzzleDirective, system: RepositorySystem, session: RepositorySystemSession): Set<MuzzleDirective> {
+fun inverseOf(muzzleDirective: MuzzleDirective, system: RepositorySystem, session: RepositorySystemSession, repos: List<RemoteRepository>): Set<MuzzleDirective> {
   val inverseDirectives = mutableSetOf<MuzzleDirective>()
 
   val allVersionsArtifact = DefaultArtifact(
@@ -325,7 +320,6 @@ fun inverseOf(muzzleDirective: MuzzleDirective, system: RepositorySystem, sessio
     "jar",
     muzzleDirective.versions.get())
 
-  val repos = projectRepositories
   val allRangeRequest = VersionRangeRequest().apply {
     repositories = repos
     artifact = allVersionsArtifact
@@ -374,7 +368,7 @@ fun filterVersions(range: VersionRangeResult, skipVersions: Set<String>) = seque
   }
 }.distinct().take(RANGE_COUNT_LIMIT)
 
-fun muzzleDirectiveToArtifacts(muzzleDirective: MuzzleDirective, system: RepositorySystem, session: RepositorySystemSession) = sequence<Artifact> {
+fun muzzleDirectiveToArtifacts(muzzleDirective: MuzzleDirective, system: RepositorySystem, session: RepositorySystemSession, repos: List<RemoteRepository>) = sequence<Artifact> {
   val directiveArtifact: Artifact = DefaultArtifact(
     muzzleDirective.group.get(),
     muzzleDirective.module.get(),
@@ -383,7 +377,7 @@ fun muzzleDirectiveToArtifacts(muzzleDirective: MuzzleDirective, system: Reposit
     muzzleDirective.versions.get())
 
   val rangeRequest = VersionRangeRequest().apply {
-    repositories = projectRepositories
+    repositories = repos
     artifact = directiveArtifact
   }
   val rangeResult = system.resolveVersionRange(session, rangeRequest)

instrumentation/restlet/restlet-1.0/javaagent/build.gradle.kts

@@ -6,7 +6,9 @@ muzzle {
   pass {
     group.set("org.restlet")
     module.set("org.restlet")
-    versions.set("[1.0.0, 1.2-M1)")
+    // TODO: rename this module to restlet-1.1
+    versions.set("[1.1.0, 1.2-M1)")
+    extraDependency("com.noelios.restlet:com.noelios.restlet")
     assertInverse.set(true)
   }
 }

instrumentation/restlet/restlet-2.0/javaagent/build.gradle.kts

@@ -4,8 +4,8 @@ plugins {
 
 muzzle {
   pass {
-    group.set("org.restlet")
-    module.set("org.restlet.jse")
+    group.set("org.restlet.jse")
+    module.set("org.restlet")
     versions.set("[2.0.0,)")
     assertInverse.set(true)
   }

instrumentation/restlet/restlet-2.0/library/src/main/java/io/opentelemetry/instrumentation/restlet/v2_0/internal/RestletHeadersGetter.java

@@ -5,25 +5,67 @@
 
 package io.opentelemetry.instrumentation.restlet.v2_0.internal;
 
+import static java.util.Collections.emptySet;
+
 import io.opentelemetry.context.propagation.TextMapGetter;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.Map;
+import java.util.concurrent.ConcurrentMap;
+import javax.annotation.Nullable;
 import org.restlet.Message;
 import org.restlet.Request;
 import org.restlet.util.Series;
 
 final class RestletHeadersGetter implements TextMapGetter<Request> {
 
+  private static final MethodHandle GET_ATTRIBUTES;
+
+  static {
+    MethodHandle getAttributes = null;
+
+    MethodHandles.Lookup lookup = MethodHandles.lookup();
+    try {
+      getAttributes =
+          lookup.findVirtual(Message.class, "getAttributes", MethodType.methodType(Map.class));
+    } catch (NoSuchMethodException | IllegalAccessException e) {
+      // changed the return type to ConcurrentMap in version 2.1
+      try {
+        getAttributes =
+            lookup.findVirtual(
+                Message.class, "getAttributes", MethodType.methodType(ConcurrentMap.class));
+      } catch (NoSuchMethodException | IllegalAccessException ex) {
+        // ignored
+      }
+    }
+
+    GET_ATTRIBUTES = getAttributes;
+  }
+
   @Override
   public Iterable<String> keys(Request carrier) {
-    return getHeaders(carrier).getNames();
+    Series<?> headers = getHeaders(carrier);
+    return headers == null ? emptySet() : headers.getNames();
   }
 
   @Override
   public String get(Request carrier, String key) {
     Series<?> headers = getHeaders(carrier);
-    return headers.getFirstValue(key, /* ignoreCase = */ true);
+    return headers == null ? null : headers.getFirstValue(key, /* ignoreCase = */ true);
   }
 
+  @SuppressWarnings("unchecked")
+  @Nullable
   static Series<?> getHeaders(Message carrier) {
-    return (Series<?>) carrier.getAttributes().get("org.restlet.http.headers");
+    if (GET_ATTRIBUTES == null) {
+      return null;
+    }
+    try {
+      Map<String, Object> attributes = (Map<String, Object>) GET_ATTRIBUTES.invoke(carrier);
+      return (Series<?>) attributes.get("org.restlet.http.headers");
+    } catch (Throwable e) {
+      return null;
+    }
   }
 }