import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * Filter for rate limiting to protect against bot attacks and excessive requests.
 * Tracks request counts per IP address and blocks excessive requests based on configurable thresholds.
 */
public class RateLimitFilter implements Filter {

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

    /**

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * Filter for handling Cross-Origin Resource Sharing (CORS) requests.
 * Processes CORS headers and handles preflight OPTIONS requests.
 */
public class CorsFilter implements Filter {

    /**
     * Creates a new instance of CorsFilter.
     */
    public CorsFilter() {
        // Default constructor
    }

                }
            }
            response.sendError(statusCode, message);
        }
    }

    /**
     * Processes API requests to the search engine.
     * Handles both regular API calls and plugin requests.
     *
     * @param request  the HTTP servlet request
     * @param response the HTTP servlet response
     * @param path     the request path after removing the prefix

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * Filter for CPU load-based request control.
 * Returns HTTP 429 (Too Many Requests) when CPU usage exceeds configurable thresholds.
 * Web and API requests have independent threshold settings.
 */
public class LoadControlFilter implements Filter {

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

    /**
     * Gets the maximum number of concurrent requests to the LLM provider.
     * Default is 5. Override or configure via rag.llm.{provider}.max.concurrent.requests.
     *
     * @return the maximum concurrent requests
     */
    protected int getMaxConcurrentRequests() {
        return Integer.parseInt(ComponentUtil.getFessConfig().getOrDefault(getConfigPrefix() + ".max.concurrent.requests", "5"));
    }

    /**

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.chat;

import jakarta.validation.constraints.Size;

/**
 * Form class for chat requests.
 *
 * @author FessProject
 */
public class ChatForm {

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

    /**

import org.codelibs.fess.app.web.base.FessSearchAction;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

/**
 * Action class for handling HTTP 429 Too Many Requests error pages.
 * This action displays error pages when the server is under high load.
 */
public class ErrorBusyAction extends FessSearchAction {

    /**
     * Default constructor for ErrorBusyAction.
     */

/**
 * Factory class for managing and retrieving web API managers.
 * This factory maintains a collection of web API managers and provides
 * functionality to find the appropriate manager for incoming requests.
 */
public class WebApiManagerFactory {

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

    /**
     * Default constructor.
     */

                .build();
    }

    /**
     * Retrieves a list of popular words based on the specified search parameters.
     * Uses caching to improve performance for repeated requests.
     *
     * @param searchRequestType the type of search request
     * @param seed the seed value for popular word generation
     * @param tags array of tags to filter results

import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.ResourceUtil;

import jakarta.annotation.PostConstruct;

/**
 * Helper class for managing HTTP requests using cURL-like operations.
 */
public class CurlHelper {

    /**
     * Default constructor.
     */
    public CurlHelper() {
        // Empty constructor
    }