private Cache buildCache()

in api/src/main/java/com/spotify/metrics/core/MetricIdCache.java [358:384]

• 21 lines of code
• 6 McCabe index (conditional complexity)

        private <T> Cache<T> buildCache(
            Cache<T> cache, Loader<T> loader, TypedCacheBuilder<T> typedCacheBuilder
        ) {
            if (cache != null) {
                return cache;
            }

            if (loader == null) {
                throw new IllegalStateException("'loader' must be set");
            }

            if (cacheBuilder != null) {
                final Cache<T> c = cacheBuilder.build(loader);

                if (c == null) {
                    throw new IllegalStateException("'cacheBuilder' must return non-null values");
                }

                return c;
            }

            if (typedCacheBuilder != null) {
                return typedCacheBuilder.build(loader);
            }

            throw new IllegalStateException("No cache implementation is configured");
        }