content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package test.plugins;
  
  import java.util.Collections;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.HashMap;
  
  import org.apache.kafka.common.Configurable;
  import org.apache.kafka.connect.data.Schema;
  import org.apache.kafka.connect.data.SchemaAndValue;
  import org.apache.kafka.connect.storage.Converter;
  import org.apache.kafka.connect.runtime.isolation.SamplingTestPlugin;
  
  /**
   * Fake plugin class for testing classloading isolation.
   * See {@link org.apache.kafka.connect.runtime.isolation.TestPlugins}.
   * <p>Samples data about its initialization environment for later analysis.
   */
  public final class SamplingConfigurable implements SamplingTestPlugin, Converter, Configurable {
  
    private static final ClassLoader STATIC_CLASS_LOADER;
    private static List<SamplingTestPlugin> instances;
    private final ClassLoader classloader;
    private Map<String, SamplingTestPlugin> samples;
  
    static {
      STATIC_CLASS_LOADER = Thread.currentThread().getContextClassLoader();
      instances = Collections.synchronizedList(new ArrayList<>());
    }
  
    {
      samples = new HashMap<>();
      classloader = Thread.currentThread().getContextClassLoader();
    }
  
    public SamplingConfigurable() {
      logMethodCall(samples);
      instances.add(this);
    }
  
    @Override
    public void configure(final Map<String, ?> configs) {
      logMethodCall(samples);
    }
  
    @Override
    public void configure(final Map<String, ?> configs, final boolean isKey) {
    }
  
    @Override
    public byte[] fromConnectData(final String topic, final Schema schema, final Object value) {
      return new byte[0];
    }
  
    @Override
    public SchemaAndValue toConnectData(final String topic, final byte[] value) {
      return null;
    }
  
    @Override
    public ClassLoader staticClassloader() {
      return STATIC_CLASS_LOADER;
    }
  
    @Override
    public ClassLoader classloader() {
      return classloader;
    }
  
    @Override
    public Map<String, SamplingTestPlugin> otherSamples() {
      return samples;
    }
  
    @Override
    public List<SamplingTestPlugin> allInstances() {
      return instances;
    }
  }
  