@Override
public boolean rename(Path src, Path dst) throws IOException {
Path absoluteSrc = makeAbsolute(src);
INode srcINode = store.retrieveINode(absoluteSrc);
if (srcINode == null) {
// src path doesn't exist
return false;
}
Path absoluteDst = makeAbsolute(dst);
INode dstINode = store.retrieveINode(absoluteDst);
if (dstINode != null && dstINode.isDirectory()) {
absoluteDst = new Path(absoluteDst, absoluteSrc.getName());
dstINode = store.retrieveINode(absoluteDst);
}
if (dstINode != null) {
// dst path already exists - can't overwrite
return false;
}
Path dstParent = absoluteDst.getParent();
if (dstParent != null) {
INode dstParentINode = store.retrieveINode(dstParent);
if (dstParentINode == null || dstParentINode.isFile()) {
// dst parent doesn't exist or is a file
return false;
}
}
return renameRecursive(absoluteSrc, absoluteDst);
}
private static long findLength(INode inode) {
if (!inode.isDirectory()) {
long length = 0L;
for (Block block : inode.getBlocks()) {
length += block.getLength();
}
return length;
}
return 0;
}
private INode checkFile(Path path) throws IOException {
INode inode = store.retrieveINode(makeAbsolute(path));
if (inode == null) {
throw new IOException("No such file.");
}
if (inode.isDirectory()) {
throw new IOException("Path " + path + " is a directory.");
}
return inode;
}
private boolean renameRecursive(Path src, Path dst) throws IOException {
INode srcINode = store.retrieveINode(src);
store.storeINode(dst, srcINode);
store.deleteINode(src);
if (srcINode.isDirectory()) {
for (Path oldSrc : store.listDeepSubPaths(src)) {
INode inode = store.retrieveINode(oldSrc);
if (inode == null) {
return false;
}
String oldSrcPath = oldSrc.toUri().getPath();
String srcPath = src.toUri().getPath();
String dstPath = dst.toUri().getPath();
Path newDst = new Path(oldSrcPath.replaceFirst(srcPath, dstPath));
store.storeINode(newDst, inode);
store.deleteINode(oldSrc);
}
}
return true;
}
OssFileStatus(Path f, INode inode) throws IOException {
super(findLength(inode), inode.isDirectory(), 1, findBlocksize(inode), 0, f);
}