@Override
public List<HdfsFileStatusWithId> listLocatedHdfsStatus(FileSystem fs, Path p, PathFilter filter)
throws IOException {
DistributedFileSystem dfs = ensureDfs(fs);
DFSClient dfsc = dfs.getClient();
final String src = p.toUri().getPath();
DirectoryListing current =
dfsc.listPaths(src, org.apache.hadoop.hdfs.protocol.HdfsFileStatus.EMPTY_NAME, true);
if (current == null) { // the directory does not exist
throw new FileNotFoundException("File " + p + " does not exist.");
}
final URI fsUri = fs.getUri();
List<HdfsFileStatusWithId> result =
new ArrayList<HdfsFileStatusWithId>(current.getPartialListing().length);
while (current != null) {
org.apache.hadoop.hdfs.protocol.HdfsFileStatus[] hfss = current.getPartialListing();
for (int i = 0; i < hfss.length; ++i) {
HdfsLocatedFileStatus next = (HdfsLocatedFileStatus) (hfss[i]);
if (filter != null) {
Path filterPath = next.getFullPath(p).makeQualified(fsUri, null);
if (!filter.accept(filterPath)) continue;
}
LocatedFileStatus lfs = next.makeQualifiedLocated(fsUri, p);
result.add(new HdfsFileStatusWithIdImpl(lfs, next.getFileId()));
}
current = current.hasMore() ? dfsc.listPaths(src, current.getLastName(), true) : null;
}
return result;
}
static void generateDirectoryStructure(
JspWriter out, HttpServletRequest req, HttpServletResponse resp, Configuration conf)
throws IOException, InterruptedException {
final String dir =
JspHelper.validatePath(StringEscapeUtils.unescapeHtml(req.getParameter("dir")));
if (dir == null) {
out.print("Invalid input");
return;
}
String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
UserGroupInformation ugi = JspHelper.getUGI(req, conf);
String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
int namenodeInfoPort = -1;
if (namenodeInfoPortStr != null) namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);
final String nnAddr = req.getParameter(JspHelper.NAMENODE_ADDRESS);
if (nnAddr == null) {
out.print(JspHelper.NAMENODE_ADDRESS + " url param is null");
return;
}
DFSClient dfs = getDFSClient(ugi, nnAddr, conf);
String target = dir;
final HdfsFileStatus targetStatus = dfs.getFileInfo(target);
if (targetStatus == null) { // not exists
out.print("<h3>File or directory : " + target + " does not exist</h3>");
JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, target, nnAddr);
} else {
if (!targetStatus.isDir()) { // a file
List<LocatedBlock> blocks =
dfs.getNamenode().getBlockLocations(dir, 0, 1).getLocatedBlocks();
LocatedBlock firstBlock = null;
DatanodeInfo[] locations = null;
if (blocks.size() > 0) {
firstBlock = blocks.get(0);
locations = firstBlock.getLocations();
}
if (locations == null || locations.length == 0) {
out.print("Empty file");
} else {
DatanodeInfo chosenNode = JspHelper.bestNode(firstBlock, conf);
String fqdn = canonicalize(chosenNode.getIpAddr());
int datanodePort = chosenNode.getXferPort();
String redirectLocation =
"http://"
+ fqdn
+ ":"
+ chosenNode.getInfoPort()
+ "/browseBlock.jsp?blockId="
+ firstBlock.getBlock().getBlockId()
+ "&blockSize="
+ firstBlock.getBlock().getNumBytes()
+ "&genstamp="
+ firstBlock.getBlock().getGenerationStamp()
+ "&filename="
+ URLEncoder.encode(dir, "UTF-8")
+ "&datanodePort="
+ datanodePort
+ "&namenodeInfoPort="
+ namenodeInfoPort
+ JspHelper.getDelegationTokenUrlParam(tokenString)
+ JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr);
resp.sendRedirect(redirectLocation);
}
return;
}
// directory
// generate a table and dump the info
String[] headings = {
"Name",
"Type",
"Size",
"Replication",
"Block Size",
"Modification Time",
"Permission",
"Owner",
"Group"
};
out.print("<h3>Contents of directory ");
JspHelper.printPathWithLinks(dir, out, namenodeInfoPort, tokenString, nnAddr);
out.print("</h3><hr>");
JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, dir, nnAddr);
out.print("<hr>");
File f = new File(dir);
String parent;
if ((parent = f.getParent()) != null)
out.print(
"<a href=\""
+ req.getRequestURL()
+ "?dir="
+ parent
+ "&namenodeInfoPort="
+ namenodeInfoPort
+ JspHelper.getDelegationTokenUrlParam(tokenString)
+ JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr)
+ "\">Go to parent directory</a><br>");
DirectoryListing thisListing = dfs.listPaths(target, HdfsFileStatus.EMPTY_NAME);
if (thisListing == null || thisListing.getPartialListing().length == 0) {
out.print("Empty directory");
} else {
JspHelper.addTableHeader(out);
int row = 0;
JspHelper.addTableRow(out, headings, row++);
String cols[] = new String[headings.length];
do {
HdfsFileStatus[] files = thisListing.getPartialListing();
for (int i = 0; i < files.length; i++) {
String localFileName = files[i].getLocalName();
// Get the location of the first block of the file
if (!files[i].isDir()) {
cols[1] = "file";
cols[2] = StringUtils.byteDesc(files[i].getLen());
cols[3] = Short.toString(files[i].getReplication());
cols[4] = StringUtils.byteDesc(files[i].getBlockSize());
} else {
cols[1] = "dir";
cols[2] = "";
cols[3] = "";
cols[4] = "";
}
String datanodeUrl =
req.getRequestURL()
+ "?dir="
+ URLEncoder.encode(files[i].getFullName(target), "UTF-8")
+ "&namenodeInfoPort="
+ namenodeInfoPort
+ JspHelper.getDelegationTokenUrlParam(tokenString)
+ JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr);
cols[0] = "<a href=\"" + datanodeUrl + "\">" + localFileName + "</a>";
cols[5] = lsDateFormat.format(new Date((files[i].getModificationTime())));
cols[6] = files[i].getPermission().toString();
cols[7] = files[i].getOwner();
cols[8] = files[i].getGroup();
JspHelper.addTableRow(out, cols, row++);
}
if (!thisListing.hasMore()) {
break;
}
thisListing = dfs.listPaths(target, thisListing.getLastName());
} while (thisListing != null);
JspHelper.addTableFooter(out);
}
}
out.print(
"<br><a href=\"http://"
+ canonicalize(nnAddr)
+ ":"
+ namenodeInfoPort
+ "/dfshealth.jsp\">Go back to DFS home</a>");
dfs.close();
}
