

package test.plugins;

import java.util.Map;
import java.util.HashMap;
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.
 * Samples are shared between instances of the same class in a static variable.
 */
public class AliasedStaticField extends SamplingTestPlugin implements Converter {

  private static final Map<String, SamplingTestPlugin> SAMPLES;
  private static final ClassLoader STATIC_CLASS_LOADER;
  private final ClassLoader classloader;

  static {
    SAMPLES = new HashMap<>();
    STATIC_CLASS_LOADER = Thread.currentThread().getContextClassLoader();
  }

  {
    classloader = Thread.currentThread().getContextClassLoader();
  }

  @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;
  }
}
