Function getCachedKeyRange

fdbserver/StorageCache.actor.cpp:704–718

}

KeyRange getCachedKeyRange(StorageCacheData* data, const KeySelectorRef& sel)
// Returns largest range that is cached on this server and selectorInRange(sel, range) or wrong_shard_server if no such
// range exists
{
	auto i = sel.isBackward() ? data->cachedRangeMap.rangeContainingKeyBefore(sel.getKey())
	                          : data->cachedRangeMap.rangeContaining(sel.getKey());

	if (i->value()->notAssigned())
		throw wrong_shard_server();
	else if (!i->value()->isReadable())
		throw future_version();

	ASSERT(selectorInRange(sel, i->range()));
	return i->range();
}

ACTOR Future<Void> getKeyValues(StorageCacheData* data, GetKeyValuesRequest req)
// Throws a wrong_shard_server if the keys in the request or result depend on data outside this server OR if a large