content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.spring.batch.v3_0.item;
  
  import static io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge.currentContext;
  import static io.opentelemetry.javaagent.instrumentation.spring.batch.v3_0.SpringBatchInstrumentationConfig.shouldTraceItems;
  import static io.opentelemetry.javaagent.instrumentation.spring.batch.v3_0.item.ItemSingletons.startChunk;
  import static net.bytebuddy.matcher.ElementMatchers.isPublic;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  
  import io.opentelemetry.context.Context;
  import io.opentelemetry.context.Scope;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import javax.annotation.Nullable;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  import org.springframework.batch.core.scope.context.ChunkContext;
  
  public class ChunkOrientedTaskletInstrumentation implements TypeInstrumentation {
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("org.springframework.batch.core.step.item.ChunkOrientedTasklet");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isPublic()
              .and(named("execute"))
              .and(takesArguments(2))
              .and(takesArgument(0, named("org.springframework.batch.core.StepContribution")))
              .and(
                  takesArgument(
                      1, named("org.springframework.batch.core.scope.context.ChunkContext"))),
          this.getClass().getName() + "$ExecuteAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class ExecuteAdvice {
  
      @Nullable
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static Scope onEnter(@Advice.Argument(1) ChunkContext chunkContext) {
        if (!shouldTraceItems()) {
          return null;
        }
        Context context = startChunk(currentContext(), chunkContext);
        return context.makeCurrent();
      }
  
      @Advice.OnMethodExit(suppress = Throwable.class, onThrowable = Throwable.class)
      public static void onExit(@Advice.Enter @Nullable Scope scope) {
        if (scope != null) {
          scope.close();
        }
      }
    }
  }
  