* Implements a sliding window algorithm for request counting
 * and manages IP-based blocking using Guava Cache for automatic expiration.
 */
public class RateLimitHelper {

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

    /**
     * Request counters per IP address.
     * Entries automatically expire after the configured window period.
     */

import org.junit.jupiter.api.TestInfo;

public class RateLimitHelperTest extends UnitFessTestCase {

    private RateLimitHelper rateLimitHelper;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        rateLimitHelper = new RateLimitHelper();
        rateLimitHelper.init();
    }

    @Test
    public void test_getClientIp_remoteAddr() {

        if (!ComponentUtil.available()) {
            chain.doFilter(request, response);
            return;
        }

        final RateLimitHelper rateLimitHelper = ComponentUtil.getRateLimitHelper();

        if (!rateLimitHelper.isEnabled()) {
            chain.doFilter(request, response);
            return;
        }

        final HttpServletRequest httpRequest = (HttpServletRequest) request;

	</component>
	<component name="labelTypeHelper" class="org.codelibs.fess.helper.LabelTypeHelper">
	</component>
	<component name="rateLimitHelper" class="org.codelibs.fess.helper.RateLimitHelper">
	</component>
	<component name="relatedContentHelper" class="org.codelibs.fess.helper.RelatedContentHelper">
	</component>