public void configure()

in src/main/java/org/apache/geronimo/microprofile/impl/jwtauth/jaxrs/RolesAllowedFeature.java [51:82]
28 lines of code
13 McCabe index (conditional complexity)

    public void configure(final ResourceInfo resourceInfo, final FeatureContext featureContext) {
        final Map<Class<?>, Annotation> methodAnnotations = collectConfig(resourceInfo.getResourceMethod());
        if (methodAnnotations.size() > 1) {
            throw new IllegalArgumentException("Ambiguous configuration for " + resourceInfo.getResourceMethod() + ": " + methodAnnotations);
        }

        final Map<Class<?>, Annotation> classAnnotations = collectConfig(unwrapClazz(resourceInfo.getResourceClass()));
        if (classAnnotations.size() > 1) {
            throw new IllegalArgumentException("Ambiguous configuration for " + resourceInfo.getResourceClass() + ": " + classAnnotations);
        }

        if (classAnnotations.isEmpty() && methodAnnotations.isEmpty()) {
            return;
        }

        try {
            ofNullable(RolesAllowedFeature.class.getClassLoader())
                    .orElseGet(ClassLoader::getSystemClassLoader)
                    .loadClass("javax.annotation.security.PermitAll");
        } catch (final ClassNotFoundException cnfe) {
            return;
        }

        final boolean denyAll = methodAnnotations.containsKey(DenyAll.class) || (methodAnnotations.isEmpty() && classAnnotations.containsKey(DenyAll.class));
        final boolean permitAll = !denyAll && (methodAnnotations.containsKey(PermitAll.class) || (methodAnnotations.isEmpty() && classAnnotations.containsKey(PermitAll.class)));
        final Collection<String> roles = denyAll || permitAll ?
                emptyList() :
                Stream.of(RolesAllowed.class.cast(ofNullable(methodAnnotations.get(RolesAllowed.class)).orElseGet(() -> classAnnotations.get(RolesAllowed.class))).value())
                        .flatMap(it -> mapper.map(it).stream())
                        .collect(toSet());
        featureContext.register(new RolesAllowedRequestFilter(denyAll, permitAll, roles));
    }