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package apollo.spi;

import com.google.common.collect.Maps;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Map;

/**
 * @author Jason Song([email protected])
 */
public class DefaultConfigRegistry implements ConfigRegistry {
  private static final Logger s_logger = LoggerFactory.getLogger(DefaultConfigRegistry.class);
  private Map m_instances = Maps.newConcurrentMap();

  @Override
  public void register(String namespace, ConfigFactory factory) {
    if (m_instances.containsKey(namespace)) {
      s_logger.warn("ConfigFactory({}) is overridden by {}!", namespace, factory.getClass());
    }

    m_instances.put(namespace, factory);
  }

  @Override
  public ConfigFactory getFactory(String namespace) {
    ConfigFactory config = m_instances.get(namespace);

    return config;
  }
}