* Provides document indexing, searching, and administrative operations.
 */
public class SearchEngineClient implements Client {

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

    private static final Logger logger = LogManager.getLogger(SearchEngineClient.class);

    private static final String DOC_INDEX = "fess";

    }

    // Test normal operation with GREEN status and state change
    @Test
    public void test_execute_greenStatusNoChange() {
        // Setup mock components
        SearchEngineClient searchEngineClient = new SearchEngineClient() {
            @Override
            public PingResponse ping() {
                return new PingResponse(createMockHealthResponse("test-cluster", ClusterHealthStatus.GREEN));
            }

            @Override
            protected long getDocumentSizeByQuery(final SearchEngineClient searchEngineClient, final QueryBuilder queryBuilder,
                    final FessConfig fessConfig) {
                return documentSizeByQuery;
            }

            @Override
            protected int refreshIndex(final SearchEngineClient searchEngineClient, final String index) {
                return 200;
            }
        };

        // Create mock SearchEngineClient that throws exception
        searchEngineClient = new SearchEngineClient() {
            @Override
            public long deleteByQuery(String index, QueryBuilder query) {
                throw new RuntimeException("Delete operation failed");
            }
        };
        ComponentUtil.register(searchEngineClient, "searchEngineClient");

        // Execute the job

        // Setup mock components
        setupMockComponents();
    }

    private void setupMockComponents() {
        // Mock SearchEngineClient
        SearchEngineClient mockSearchEngineClient = new SearchEngineClient() {
            @Override
            public long updateByQuery(String index,

                }
            });
        }
        Files.deleteIfExists(path);
    }

    private void setupMockComponents(final List<Map<String, Object>> documents) {
        final SearchEngineClient searchEngineClient = new SearchEngineClient() {
            @Override
            public long scrollSearch(final String index, final SearchCondition<org.opensearch.action.search.SearchRequestBuilder> condition,

         */
        protected final String imageExtention;

        /**
         * OpenSearch client for document validation.
         */
        protected final SearchEngineClient searchEngineClient;

        /**
         * Fess configuration for settings.
         */
        protected final FessConfig fessConfig;

        ComponentUtil.register(labelTypeHelper, "labelTypeHelper");
        ComponentUtil.register(languageHelper, "languageHelper");
        ComponentUtil.register(searchEngineClient, "searchEngineClient");
        ComponentUtil.register(ingestFactory, "ingestFactory");
        ComponentUtil.register(fessConfig, "fessConfig");

        // Create test implementation of IndexUpdateCallbackImpl

    @Test
    public void test_searchEngineClient_injection() {
        // Test SearchEngineClient field injection
        ThumbnailGenerator generator = new ThumbnailGenerator();
        assertNull(generator.searchEngineClient);

        // After proper initialization, it should be injected
        SearchEngineClient mockClient = new SearchEngineClient() {
            // Mock implementation
        };

import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.helper.LogNotificationHelper;
import org.codelibs.fess.helper.LogNotificationHelper.LogNotificationEvent;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;

/**