public void onStartup()

in meecrowave-core/src/main/java/org/apache/meecrowave/cxf/CxfCdiAutoSetup.java [80:146]
60 lines of code
4 McCabe index (conditional complexity)

    public void onStartup(final Set<Class<?>> c, final ServletContext ctx) {
        final Configuration builder = Configuration.class.cast(ctx.getAttribute("meecrowave.configuration"));
        final MeecrowaveCXFCdiServlet delegate = new MeecrowaveCXFCdiServlet();
        final FilterRegistration.Dynamic jaxrs = ctx.addFilter(NAME, new Filter() {
            private final String servletPath = builder.getJaxrsMapping().endsWith("/*") ?
                    builder.getJaxrsMapping().substring(0, builder.getJaxrsMapping().length() - 2) : builder.getJaxrsMapping();

            @Override
            public void init(final FilterConfig filterConfig) throws ServletException {
                delegate.init(new ServletConfig() {
                    @Override
                    public String getServletName() {
                        return NAME;
                    }

                    @Override
                    public ServletContext getServletContext() {
                        return filterConfig.getServletContext();
                    }

                    @Override
                    public String getInitParameter(final String name) {
                        return filterConfig.getInitParameter(name);
                    }

                    @Override
                    public Enumeration<String> getInitParameterNames() {
                        return filterConfig.getInitParameterNames();
                    }
                });
            }

            @Override
            public void doFilter(final ServletRequest request, final ServletResponse response, final FilterChain chain) throws IOException, ServletException {
                if (!HttpServletRequest.class.isInstance(request)) {
                    chain.doFilter(request, response);
                    return;
                }
                final HttpServletRequest http = HttpServletRequest.class.cast(request);
                final String path = http.getRequestURI().substring(http.getContextPath().length());
                final Optional<String> app = Stream.of(delegate.prefixes).filter(path::startsWith).findAny();
                if (app.isPresent()) {
                    delegate.service(new HttpServletRequestWrapper(http) { // fake servlet pathInfo and path
                        @Override
                        public String getPathInfo() {
                            return path;
                        }

                        @Override
                        public String getServletPath() {
                            return servletPath;
                        }
                    }, response);
                } else {
                    chain.doFilter(request, response);
                }
            }

            @Override
            public void destroy() {
                delegate.destroy();
            }
        });
        jaxrs.setAsyncSupported(true);
        jaxrs.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ASYNC), true, builder.getJaxrsMapping());
        ofNullable(builder.getCxfServletParams()).ifPresent(m -> m.forEach(jaxrs::setInitParameter));
    }