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Instrumentation of Java libraries using OpenTelemetry.

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/*
 * Copyright The OpenTelemetry Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package io.opentelemetry.instrumentation.kafka.internal;

import java.util.ArrayList;
import java.util.List;

/**
 * List implementation that can be used to hold metrics reporters in kafka configuration without
 * breaking serialization. When this list is serialized it removes OpenTelemetryMetricsReporter to
 * ensure that the configuration can be deserialized even when the instrumentation is not present.
 *
 * This class is internal and is hence not for public use. Its APIs are unstable and can change
 * at any time.
 */
public class MetricsReporterList extends ArrayList {
  private static final long serialVersionUID = 1L;

  public static  List singletonList(T o) {
    List list = new MetricsReporterList<>();
    list.add(o);
    return list;
  }

  private Object writeReplace() {
    // serialize to plain ArrayList that does not contain OpenTelemetryMetricsReporter
    List