public RequestContextMappings()

in log4j-audit/log4j-audit-api/src/main/java/org/apache/logging/log4j/audit/request/RequestContextMappings.java [52:99]
47 lines of code
13 McCabe index (conditional complexity)

    public RequestContextMappings(Class<?> clazz) {
        if (clazz == null) {
            throw new IllegalArgumentException("A RequestContext class must be provided");
        }
        Annotation annotation = clazz.getAnnotation(HeaderPrefix.class);
        this.headerPrefix = annotation != null ? ((HeaderPrefix) annotation).value().toLowerCase() : DEFAULT_HEADER_PREFIX;
        Field[] fields = clazz.getFields();
        for (Field field : fields) {
            if (!Modifier.isStatic(field.getModifiers())) {
                continue;
            }
            if (field.getType().equals(String.class)) {
                String fieldName;
                try {
                    fieldName = (String) field.get(null);
                } catch (IllegalAccessException ex) {
                    continue;
                }
                if (fieldName == null) {
                    continue;
                }
                annotation = field.getAnnotation(ClientServer.class);
                if (annotation != null) {
                    mappings.put(fieldName.toLowerCase(), new ClientServerMapping(fieldName));
                    continue;
                }

                annotation = field.getAnnotation(Local.class);
                if (annotation != null) {
                    mappings.put(fieldName.toLowerCase(), new LocalMapping(fieldName));
                }
            } else if (field.getType().equals(Supplier.class)) {
                annotation = field.getAnnotation(Chained.class);
                if (annotation != null) {
                    Chained chained = (Chained) annotation;
                    try {
                        @SuppressWarnings("unchecked")
                        Supplier<String> supplier = (Supplier<String>) field.get(null);
                        mappings.put(chained.fieldName().toLowerCase(),
                                new ChainedMapping(chained.fieldName(), chained.chainedFieldName(), supplier));
                    } catch (IllegalAccessException ex) {
                        throw new IllegalArgumentException("Unable to retrieve Supplier for chained field " + chained.fieldName());
                    }
                }
            }
        }
        mappings.entrySet().removeIf(a -> validateChained(a.getValue()));
    }