content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.instrumentation.rxjava.v1_0;
  
  import io.opentelemetry.context.Context;
  import io.opentelemetry.instrumentation.api.instrumenter.Instrumenter;
  import java.util.concurrent.atomic.AtomicReference;
  import rx.Subscription;
  
  final class SpanFinishingSubscription<REQUEST> implements Subscription {
    private final Instrumenter<REQUEST, ?> instrumenter;
    private final AtomicReference<Context> contextRef;
    private final REQUEST request;
  
    SpanFinishingSubscription(
        Instrumenter<REQUEST, ?> instrumenter, AtomicReference<Context> contextRef, REQUEST request) {
      this.instrumenter = instrumenter;
      this.contextRef = contextRef;
      this.request = request;
    }
  
    @Override
    public void unsubscribe() {
      Context context = contextRef.getAndSet(null);
      if (context != null) {
        instrumenter.end(context, request, null, null);
      }
    }
  
    @Override
    public boolean isUnsubscribed() {
      return contextRef.get() == null;
    }
  }
  