Function keyServersValue

fdbclient/SystemData.cpp:60–97

	return k.withPrefix(keyServersPrefix, arena);
}
const Value keyServersValue(RangeResult result, const std::vector<UID>& src, const std::vector<UID>& dest) {
	if (!CLIENT_KNOBS->TAG_ENCODE_KEY_SERVERS) {
		BinaryWriter wr(IncludeVersion(ProtocolVersion::withKeyServerValue()));
		wr << src << dest;
		return wr.toValue();
	}

	std::vector<Tag> srcTag;
	std::vector<Tag> destTag;

	bool foundOldLocality = false;
	for (const KeyValueRef& kv : result) {
		UID uid = decodeServerTagKey(kv.key);
		if (std::find(src.begin(), src.end(), uid) != src.end()) {
			srcTag.push_back(decodeServerTagValue(kv.value));
			if (srcTag.back().locality == tagLocalityUpgraded) {
				foundOldLocality = true;
				break;
			}
		}
		if (std::find(dest.begin(), dest.end(), uid) != dest.end()) {
			destTag.push_back(decodeServerTagValue(kv.value));
			if (destTag.back().locality == tagLocalityUpgraded) {
				foundOldLocality = true;
				break;
			}
		}
	}

	if (foundOldLocality || src.size() != srcTag.size() || dest.size() != destTag.size()) {
		ASSERT_WE_THINK(foundOldLocality);
		BinaryWriter wr(IncludeVersion(ProtocolVersion::withKeyServerValue()));
		wr << src << dest;
		return wr.toValue();
	}

	return keyServersValue(srcTag, destTag);
}

const Value keyServersValue(const std::vector<UID>& src,
                            const std::vector<UID>& dest,