content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.internal.urlclassloader;
  
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.isProtected;
  import static net.bytebuddy.matcher.ElementMatchers.isStatic;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.not;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  
  import io.opentelemetry.javaagent.bootstrap.internal.ClassLoaderMatcherCacheHolder;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import java.net.URL;
  import java.net.URLClassLoader;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class UrlClassLoaderInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("java.net.URLClassLoader");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod()
              .and(named("addURL"))
              .and(takesArguments(1))
              .and(takesArgument(0, URL.class))
              .and(isProtected())
              .and(not(isStatic())),
          UrlClassLoaderInstrumentation.class.getName() + "$AddUrlAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class AddUrlAdvice {
      @Advice.OnMethodExit(suppress = Throwable.class)
      public static void onExit(@Advice.This URLClassLoader loader) {
        ClassLoaderMatcherCacheHolder.invalidateAllCachesForClassLoader(loader);
      }
    }
  }
  