content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.servlet.v2_2;
  
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.hasClassesNamed;
  import static net.bytebuddy.matcher.ElementMatchers.not;
  
  import com.google.auto.service.AutoService;
  import io.opentelemetry.javaagent.extension.instrumentation.InstrumentationModule;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.internal.ExperimentalInstrumentationModule;
  import io.opentelemetry.javaagent.instrumentation.servlet.common.response.HttpServletResponseInstrumentation;
  import io.opentelemetry.javaagent.instrumentation.servlet.common.service.ServletAndFilterInstrumentation;
  import java.util.Arrays;
  import java.util.List;
  import net.bytebuddy.matcher.ElementMatcher;
  
  @AutoService(InstrumentationModule.class)
  public class Servlet2InstrumentationModule extends InstrumentationModule
      implements ExperimentalInstrumentationModule {
    private static final String BASE_PACKAGE = "javax.servlet";
  
    public Servlet2InstrumentationModule() {
      super("servlet", "servlet-2.2");
    }
  
    // this is required to make sure servlet 2 instrumentation won't apply to servlet 3
    @Override
    public ElementMatcher.Junction<ClassLoader> classLoaderMatcher() {
      return not(hasClassesNamed("javax.servlet.AsyncEvent", "javax.servlet.AsyncListener"));
    }
  
    @Override
    public List<TypeInstrumentation> typeInstrumentations() {
      return Arrays.asList(
          new Servlet2HttpServletResponseInstrumentation(),
          new ServletAndFilterInstrumentation(BASE_PACKAGE, adviceClassName(".Servlet2Advice")),
          new HttpServletResponseInstrumentation(
              BASE_PACKAGE, adviceClassName(".Servlet2ResponseSendAdvice")));
    }
  
    private static String adviceClassName(String suffix) {
      return Servlet2InstrumentationModule.class.getPackage().getName() + suffix;
    }
  
    @Override
    public boolean isIndyReady() {
      return true;
    }
  }
  