*
 * @author shinsuke
 *
 */
public class FesenClient implements Client {
    /**
     * HTTP address for OpenSearch.
     */
    public static final String HTTP_ADDRESS = "crawler.opensearch.http_address";

    /**
     * Target indices for OpenSearch.
     */
    public static final String TARGET_INDICES = "crawler.opensearch.target_indices";

    /**
     * Logger instance.

        String originalValue = System.getProperty(FesenClient.HTTP_ADDRESS);
        try {
            System.setProperty(FesenClient.HTTP_ADDRESS, "http://localhost:9200");
            assertEquals("http://localhost:9200", System.getProperty(FesenClient.HTTP_ADDRESS));
        } finally {
            if (originalValue != null) {
                System.setProperty(FesenClient.HTTP_ADDRESS, originalValue);
            } else {

                return fesenUrl;
            }
        });

        // Set system property to ensure ResourceUtil.getFesenHttpUrl() works
        System.setProperty("fess.search_engine.http_address", fesenUrl);
    }

    private NodeManager getNodeManager(CurlHelper curlHelper) {
        try {
            Field field = CurlHelper.class.getDeclaredField("nodeManager");
            field.setAccessible(true);

        }).build(newConfigs().clusterName(clusterName).numOfNode(1));

        // wait for yellow status
        runner.ensureYellow();

        System.setProperty(FesenClient.HTTP_ADDRESS, "localhost:" + runner.node().settings().get("http.port", "9201"));

        super.setUp(testInfo);

        // logging

set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -Dtomcat.config.path=tomcat_config.properties

REM External opensearch cluster
REM set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -Dfess.search_engine.http_address=http://localhost:9200
REM set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -Dfess.dictionary.path=%SEARCH_ENGINE_HOME%/config/

            } catch (final Exception e) {
                // ignore
            }
        }

        final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
        if (StringUtil.isNotBlank(httpAddress)) {
            System.setProperty(FesenClient.HTTP_ADDRESS, httpAddress);
        }

        TimeoutTask systemMonitorTask = null;
        TimeoutTask logNotificationTask = null;

fi
if [ "x$FESS_VAR_PATH" != "x" ]; then
  FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.var.path=$FESS_VAR_PATH"
fi
if [ "x$SEARCH_ENGINE_HTTP_URL" != "x" ]; then
  FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.search_engine.http_address=$SEARCH_ENGINE_HTTP_URL"
fi
if [ "x$FESS_DICTIONARY_PATH" != "x" ]; then
  FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.dictionary.path=$FESS_DICTIONARY_PATH"
fi

            } catch (final Exception e) {
                // ignore
            }
        }

        final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
        if (StringUtil.isNotBlank(httpAddress)) {
            System.setProperty(FesenClient.HTTP_ADDRESS, httpAddress);
        }

        TimeoutTask systemMonitorTask = null;
        TimeoutTask logNotificationTask = null;

        }).build(newConfigs().clusterName(clusterName).numOfNode(1));

        // wait for yellow status
        runner.ensureYellow();

        System.setProperty(FesenClient.HTTP_ADDRESS, "localhost:" + runner.node().settings().get("http.port", "9201"));

        super.setUp(testInfo);
    }

    @Override
    public void tearDown(final TestInfo testInfo) throws Exception {

    }

    @Test
    public void test_constants_reference() {
        // Test that the constant used is accessible and has expected value
        assertEquals("fess.search_engine.http_address", Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS);
    }

    @Test
    public void test_static_method_signature() {
        // Verify method signature is correct
        try {