private void recalcHashes(DataNode item) throws IOException {
if (item.dirty == null) {
return; // not dirty, which means no children are dirty
}
// only directories have derived hashes
if (item instanceof DirectoryNode) {
DirectoryNode dirNode = (DirectoryNode) item;
for (DataNode child : dirNode) {
recalcHashes(child);
}
ByteArrayOutputStream bout = new ByteArrayOutputStream();
hashCalc.sort(dirNode.getChildren());
String newHash = hashCalc.calcHash(dirNode, bout);
item.setHash(newHash);
byte[] arrTriplets = bout.toByteArray();
blobStore.setBlob(newHash, arrTriplets);
log.info(
"recalcHashes: "
+ item.name
+ " children:"
+ dirNode.members.size()
+ " hash="
+ newHash);
}
}
public List<ITriplet> find(String hash) {
// return DataItem.findByHash(hash, session);
byte[] arr = blobStore.getBlob(hash);
if (arr == null) {
return null;
}
ByteArrayInputStream bin = new ByteArrayInputStream(arr);
try {
return hashCalc.parseTriplets(bin);
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
public boolean dirExists(String hash) {
return blobStore.hasBlob(hash);
}