import javax.servlet.ServletResponse;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

public class BlockFilter implements Filter {

    private final int blockForSeconds;

    public BlockFilter(int blockForSeconds) {
        this.blockForSeconds = blockForSeconds;
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    WebAppContext getCustomHandler() {
        return webapp
    }

    private void addFilters() {
        if (blockIncomingConnectionsForSeconds > 0) {
            this.webapp.addFilter(new FilterHolder(new BlockFilter(blockIncomingConnectionsForSeconds)), "/*", EnumSet.of(DispatcherType.REQUEST))
        }
        def filter = new Filter() {
            @Override
            void init(FilterConfig filterConfig) throws ServletException {