private void serializeFileDiffList(INodeFile file, OutputStream out) throws IOException {
FileWithSnapshotFeature sf = file.getFileWithSnapshotFeature();
if (sf != null) {
List<FileDiff> diffList = sf.getDiffs().asList();
SnapshotDiffSection.DiffEntry entry =
SnapshotDiffSection.DiffEntry.newBuilder()
.setInodeId(file.getId())
.setType(Type.FILEDIFF)
.setNumOfDiff(diffList.size())
.build();
entry.writeDelimitedTo(out);
for (int i = diffList.size() - 1; i >= 0; i--) {
FileDiff diff = diffList.get(i);
SnapshotDiffSection.FileDiff.Builder fb =
SnapshotDiffSection.FileDiff.newBuilder()
.setSnapshotId(diff.getSnapshotId())
.setFileSize(diff.getFileSize());
INodeFileAttributes copy = diff.snapshotINode;
if (copy != null) {
fb.setName(ByteString.copyFrom(copy.getLocalNameBytes()))
.setSnapshotCopy(buildINodeFile(copy, parent.getSaverContext()));
}
fb.build().writeDelimitedTo(out);
}
}
}
/**
* If some blocks at the end of the block list no longer belongs to any inode, collect them and
* update the block list.
*/
private void collectBlocksAndClear(
final INodeFile file, final BlocksMapUpdateInfo info, final List<INode> removedINodes) {
// check if everything is deleted.
if (isCurrentFileDeleted() && getDiffs().asList().isEmpty()) {
file.destroyAndCollectBlocks(info, removedINodes);
return;
}
// find max file size.
final long max;
if (isCurrentFileDeleted()) {
final FileDiff last = getDiffs().getLast();
max = last == null ? 0 : last.getFileSize();
} else {
max = file.computeFileSize();
}
collectBlocksBeyondMax(file, max, info);
}