/** The key of the message: Failed to upgrade from {0}. */
    public static final String ERRORS_failed_to_upgrade_from = "{errors.failed_to_upgrade_from}";

    /** The key of the message: Failed to start re-indexing from {0} to {1}. */
    public static final String ERRORS_failed_to_reindex = "{errors.failed_to_reindex}";

    /** The key of the message: Failed to rebuild config indices. */

    /** The key of the message: Crawl End Time (Web/File) */
    public static final String LABELS_crawling_info_WebFsCrawlEndTime = "{labels.crawling_info_WebFsCrawlEndTime}";

    /** The key of the message: Indexing Execution Time (Web/File) */
    public static final String LABELS_crawling_info_WebFsIndexExecTime = "{labels.crawling_info_WebFsIndexExecTime}";

    /** The key of the message: Index Size (Web/File) */

  // Fields

  static final Logger logger = Logger.getLogger(LocalCache.class.getName());

  /**
   * Mask value for indexing into segments. The upper bits of a key's hash code are used to choose
   * the segment.
   */
  final int segmentMask;

  /**
   * Shift value for indexing within segments. Helps prevent entries that end up in the same segment
   * from also ending up in the same bucket.
   */

  // Fields

  static final Logger logger = Logger.getLogger(LocalCache.class.getName());

  /**
   * Mask value for indexing into segments. The upper bits of a key's hash code are used to choose
   * the segment.
   */
  final int segmentMask;

  /**
   * Shift value for indexing within segments. Helps prevent entries that end up in the same segment
   * from also ending up in the same bucket.
   */

import com.google.common.io.BaseEncoding;

import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;

/**
 * Client for interacting with OpenSearch search engine.
 * Provides document indexing, searching, and administrative operations.
 */
public class SearchEngineClient implements Client {

    /**
     * Default constructor.
     */
    public SearchEngineClient() {