| <%@ page |
| contentType="text/html; charset=UTF-8" |
| import="javax.servlet.*" |
| import="javax.servlet.http.*" |
| import="java.io.*" |
| import="java.util.*" |
| import="java.net.*" |
| import="org.apache.hadoop.conf.Configuration" |
| import="org.apache.hadoop.fs.*" |
| import="org.apache.hadoop.hdfs.*" |
| import="org.apache.hadoop.hdfs.server.namenode.*" |
| import="org.apache.hadoop.hdfs.server.datanode.*" |
| import="org.apache.hadoop.hdfs.server.common.*" |
| import="org.apache.hadoop.hdfs.protocol.*" |
| import="org.apache.hadoop.io.*" |
| import="org.apache.hadoop.conf.*" |
| import="org.apache.hadoop.net.DNS" |
| import="org.apache.hadoop.security.UserGroupInformation" |
| import="org.apache.hadoop.util.*" |
| import="java.text.DateFormat" |
| %> |
| <%! |
| static JspHelper jspHelper = new JspHelper(); |
| |
| public void generateDirectoryStructure( JspWriter out, |
| HttpServletRequest req, |
| HttpServletResponse resp, |
| Configuration conf |
| ) throws IOException, |
| InterruptedException { |
| String dir = req.getParameter("dir"); |
| if (dir == null || dir.length() == 0) { |
| 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); |
| |
| DFSClient dfs = JspHelper.getDFSClient(ugi, jspHelper.nameNodeAddr, |
| conf); |
| String target = dir; |
| if (!dfs.exists(target)) { |
| out.print("<h3>File or directory : " + target + " does not exist</h3>"); |
| JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, target); |
| } |
| else { |
| if( !dfs.isDirectory(target) ) { // a file |
| List<LocatedBlock> blocks = |
| dfs.namenode.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); |
| String fqdn = InetAddress.getByName(chosenNode.getHost()). |
| getCanonicalHostName(); |
| String datanodeAddr = chosenNode.getName(); |
| int datanodePort = Integer.parseInt( |
| datanodeAddr.substring( |
| datanodeAddr.indexOf(':') + 1, |
| datanodeAddr.length())); |
| 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); |
| 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); |
| out.print("</h3><hr>"); |
| JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, dir); |
| 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) + |
| "\">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++) { |
| //Get the location of the first block of the file |
| String localname = files[i].getLocalName(); |
| 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); |
| cols[0] = "<a href=\""+datanodeUrl+"\">"+localname+"</a>"; |
| cols[5] = FsShell.dateForm.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); |
| } |
| } |
| String namenodeHost = jspHelper.nameNodeAddr.getHostName(); |
| out.print("<br><a href=\"http://" + |
| InetAddress.getByName(namenodeHost).getCanonicalHostName() + ":" + |
| namenodeInfoPort + "/dfshealth.jsp\">Go back to DFS home</a>"); |
| dfs.close(); |
| } |
| |
| %> |
| |
| <html> |
| <head> |
| <style type=text/css> |
| <!-- |
| body |
| { |
| font-face:sanserif; |
| } |
| --> |
| </style> |
| <%JspHelper.createTitle(out, request, request.getParameter("dir")); %> |
| </head> |
| |
| <body onload="document.goto.dir.focus()"> |
| <% |
| Configuration conf = |
| (Configuration) getServletContext().getAttribute(JspHelper.CURRENT_CONF); |
| try { |
| generateDirectoryStructure(out,request,response,conf); |
| } |
| catch(IOException ioe) { |
| String msg = ioe.getLocalizedMessage(); |
| int i = msg.indexOf("\n"); |
| if (i >= 0) { |
| msg = msg.substring(0, i); |
| } |
| out.print("<h3>" + msg + "</h3>"); |
| } |
| %> |
| <hr> |
| |
| <h2>Local logs</h2> |
| <a href="/logs/">Log</a> directory |
| |
| <% |
| out.println(ServletUtil.htmlFooter()); |
| %> |