/**
* Extracts the StorageInfo stored in the FileAttributes.
*
* <p>Initializes legacy fields that used to be stored in StorageInfo, but are now stored in
* FileAttributes.
*
* <p>Should only be used when backwards compatibility must be maintained.
*/
public static StorageInfo extractFrom(FileAttributes attributes) {
StorageInfo info = attributes.getStorageInfo();
if (attributes.isDefined(FileAttribute.SIZE)) {
info.setLegacySize(attributes.getSize());
}
if (attributes.isDefined(FileAttribute.ACCESS_LATENCY)) {
info.setLegacyAccessLatency(attributes.getAccessLatency());
}
if (attributes.isDefined(FileAttribute.RETENTION_POLICY)) {
info.setLegacyRetentionPolicy(attributes.getRetentionPolicy());
}
if (attributes.isDefined(FileAttribute.FLAGS)) {
for (Map.Entry<String, String> entry : attributes.getFlags().entrySet()) {
info.setKey(entry.getKey(), entry.getValue());
}
}
if (attributes.isDefined(FileAttribute.CHECKSUM)) {
info.setKey("flag-c", Joiner.on(',').join(attributes.getChecksums()));
}
if (attributes.isDefined(FileAttribute.OWNER)) {
info.setKey("uid", Integer.toString(attributes.getOwner()));
}
if (attributes.isDefined(FileAttribute.OWNER_GROUP)) {
info.setKey("gid", Integer.toString(attributes.getGroup()));
}
return info;
}
