DnsCacheEntryList Class — netty Architecture

Source Code

resolver-dns/src/main/java/io/netty/resolver/dns/DefaultDnsCache.java lines 293–328

    private static final class DnsCacheEntryList extends AbstractList<DnsCacheEntry> {
        private final List<? extends DnsCacheEntry> entries;

        DnsCacheEntryList(List<? extends DnsCacheEntry> entries) {
            this.entries = entries;
        }

        @Override
        public DnsCacheEntry get(int index) {
            DefaultDnsCacheEntry entry = (DefaultDnsCacheEntry) entries.get(index);
            // As we dont know what exactly the user is doing with the returned exception (for example
            // using addSuppressed(...) and so hold up a lot of memory until the entry expires) we do
            // create a copy.
            return entry.copyIfNeeded();
        }

        @Override
        public int size() {
            return entries.size();
        }

        @Override
        public int hashCode() {
            // Just delegate to super to make checkstyle happy
            return super.hashCode();
        }

        @Override
        public boolean equals(Object o) {
            if (o instanceof DnsCacheEntryList) {
                // Fast-path.
                return entries.equals(((DnsCacheEntryList) o).entries);
            }
            return super.equals(o);
        }
    };