[120] | 1 | <%@ page |
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| 2 | contentType="text/html; charset=UTF-8" |
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| 3 | import="javax.servlet.*" |
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| 4 | import="javax.servlet.http.*" |
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| 5 | import="java.io.*" |
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| 6 | import="java.util.*" |
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| 7 | import="java.net.*" |
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| 8 | import="org.apache.hadoop.fs.*" |
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| 9 | import="org.apache.hadoop.hdfs.*" |
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| 10 | import="org.apache.hadoop.hdfs.server.namenode.*" |
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| 11 | import="org.apache.hadoop.hdfs.server.datanode.*" |
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| 12 | import="org.apache.hadoop.hdfs.protocol.*" |
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| 13 | import="org.apache.hadoop.io.*" |
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| 14 | import="org.apache.hadoop.conf.*" |
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| 15 | import="org.apache.hadoop.net.DNS" |
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| 16 | import="org.apache.hadoop.util.*" |
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| 17 | import="java.text.DateFormat" |
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| 18 | %> |
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| 19 | <%! |
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| 20 | static JspHelper jspHelper = new JspHelper(); |
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| 21 | |
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| 22 | public void generateDirectoryStructure( JspWriter out, |
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| 23 | HttpServletRequest req, |
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| 24 | HttpServletResponse resp) |
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| 25 | throws IOException { |
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| 26 | String dir = req.getParameter("dir"); |
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| 27 | if (dir == null || dir.length() == 0) { |
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| 28 | out.print("Invalid input"); |
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| 29 | return; |
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| 30 | } |
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| 31 | |
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| 32 | String namenodeInfoPortStr = req.getParameter("namenodeInfoPort"); |
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| 33 | int namenodeInfoPort = -1; |
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| 34 | if (namenodeInfoPortStr != null) |
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| 35 | namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr); |
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| 36 | |
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| 37 | DFSClient dfs = new DFSClient(jspHelper.nameNodeAddr, jspHelper.conf); |
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| 38 | String target = dir; |
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| 39 | if (!dfs.exists(target)) { |
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| 40 | out.print("<h3>File or directory : " + target + " does not exist</h3>"); |
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| 41 | JspHelper.printGotoForm(out, namenodeInfoPort, target); |
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| 42 | } |
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| 43 | else { |
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| 44 | if( !dfs.isDirectory(target) ) { // a file |
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| 45 | List<LocatedBlock> blocks = |
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| 46 | dfs.namenode.getBlockLocations(dir, 0, 1).getLocatedBlocks(); |
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| 47 | |
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| 48 | LocatedBlock firstBlock = null; |
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| 49 | DatanodeInfo [] locations = null; |
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| 50 | if (blocks.size() > 0) { |
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| 51 | firstBlock = blocks.get(0); |
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| 52 | locations = firstBlock.getLocations(); |
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| 53 | } |
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| 54 | if (locations == null || locations.length == 0) { |
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| 55 | out.print("Empty file"); |
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| 56 | } else { |
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| 57 | DatanodeInfo chosenNode = jspHelper.bestNode(firstBlock); |
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| 58 | String fqdn = InetAddress.getByName(chosenNode.getHost()). |
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| 59 | getCanonicalHostName(); |
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| 60 | String datanodeAddr = chosenNode.getName(); |
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| 61 | int datanodePort = Integer.parseInt( |
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| 62 | datanodeAddr.substring( |
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| 63 | datanodeAddr.indexOf(':') + 1, |
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| 64 | datanodeAddr.length())); |
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| 65 | String redirectLocation = "http://"+fqdn+":" + |
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| 66 | chosenNode.getInfoPort() + |
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| 67 | "/browseBlock.jsp?blockId=" + |
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| 68 | firstBlock.getBlock().getBlockId() + |
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| 69 | "&blockSize=" + firstBlock.getBlock().getNumBytes() + |
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| 70 | "&genstamp=" + firstBlock.getBlock().getGenerationStamp() + |
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| 71 | "&filename=" + URLEncoder.encode(dir, "UTF-8") + |
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| 72 | "&datanodePort=" + datanodePort + |
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| 73 | "&namenodeInfoPort=" + namenodeInfoPort; |
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| 74 | resp.sendRedirect(redirectLocation); |
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| 75 | } |
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| 76 | return; |
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| 77 | } |
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| 78 | // directory |
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| 79 | FileStatus[] files = dfs.listPaths(target); |
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| 80 | //generate a table and dump the info |
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| 81 | String [] headings = { "Name", "Type", "Size", "Replication", |
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| 82 | "Block Size", "Modification Time", |
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| 83 | "Permission", "Owner", "Group" }; |
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| 84 | out.print("<h3>Contents of directory "); |
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| 85 | JspHelper.printPathWithLinks(dir, out, namenodeInfoPort); |
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| 86 | out.print("</h3><hr>"); |
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| 87 | JspHelper.printGotoForm(out, namenodeInfoPort, dir); |
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| 88 | out.print("<hr>"); |
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| 89 | |
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| 90 | File f = new File(dir); |
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| 91 | String parent; |
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| 92 | if ((parent = f.getParent()) != null) |
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| 93 | out.print("<a href=\"" + req.getRequestURL() + "?dir=" + parent + |
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| 94 | "&namenodeInfoPort=" + namenodeInfoPort + |
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| 95 | "\">Go to parent directory</a><br>"); |
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| 96 | |
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| 97 | if (files == null || files.length == 0) { |
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| 98 | out.print("Empty directory"); |
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| 99 | } |
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| 100 | else { |
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| 101 | jspHelper.addTableHeader(out); |
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| 102 | int row=0; |
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| 103 | jspHelper.addTableRow(out, headings, row++); |
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| 104 | String cols [] = new String[headings.length]; |
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| 105 | for (int i = 0; i < files.length; i++) { |
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| 106 | //Get the location of the first block of the file |
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| 107 | if (files[i].getPath().toString().endsWith(".crc")) continue; |
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| 108 | if (!files[i].isDir()) { |
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| 109 | cols[1] = "file"; |
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| 110 | cols[2] = StringUtils.byteDesc(files[i].getLen()); |
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| 111 | cols[3] = Short.toString(files[i].getReplication()); |
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| 112 | cols[4] = StringUtils.byteDesc(files[i].getBlockSize()); |
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| 113 | } |
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| 114 | else { |
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| 115 | cols[1] = "dir"; |
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| 116 | cols[2] = ""; |
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| 117 | cols[3] = ""; |
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| 118 | cols[4] = ""; |
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| 119 | } |
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| 120 | String datanodeUrl = req.getRequestURL()+"?dir="+ |
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| 121 | URLEncoder.encode(files[i].getPath().toString(), "UTF-8") + |
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| 122 | "&namenodeInfoPort=" + namenodeInfoPort; |
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| 123 | cols[0] = "<a href=\""+datanodeUrl+"\">"+files[i].getPath().getName()+"</a>"; |
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| 124 | cols[5] = FsShell.dateForm.format(new Date((files[i].getModificationTime()))); |
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| 125 | cols[6] = files[i].getPermission().toString(); |
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| 126 | cols[7] = files[i].getOwner(); |
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| 127 | cols[8] = files[i].getGroup(); |
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| 128 | jspHelper.addTableRow(out, cols, row++); |
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| 129 | } |
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| 130 | jspHelper.addTableFooter(out); |
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| 131 | } |
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| 132 | } |
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| 133 | String namenodeHost = jspHelper.nameNodeAddr.getHostName(); |
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| 134 | out.print("<br><a href=\"http://" + |
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| 135 | InetAddress.getByName(namenodeHost).getCanonicalHostName() + ":" + |
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| 136 | namenodeInfoPort + "/dfshealth.jsp\">Go back to DFS home</a>"); |
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| 137 | dfs.close(); |
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| 138 | } |
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| 139 | |
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| 140 | %> |
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| 141 | |
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| 142 | <html> |
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| 143 | <head> |
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| 144 | <style type=text/css> |
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| 145 | <!-- |
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| 146 | body |
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| 147 | { |
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| 148 | font-face:sanserif; |
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| 149 | } |
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| 150 | --> |
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| 151 | </style> |
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| 152 | <%JspHelper.createTitle(out, request, request.getParameter("dir")); %> |
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| 153 | </head> |
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| 154 | |
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| 155 | <body onload="document.goto.dir.focus()"> |
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| 156 | <% |
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| 157 | try { |
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| 158 | generateDirectoryStructure(out,request,response); |
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| 159 | } |
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| 160 | catch(IOException ioe) { |
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| 161 | String msg = ioe.getLocalizedMessage(); |
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| 162 | int i = msg.indexOf("\n"); |
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| 163 | if (i >= 0) { |
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| 164 | msg = msg.substring(0, i); |
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| 165 | } |
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| 166 | out.print("<h3>" + msg + "</h3>"); |
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| 167 | } |
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| 168 | %> |
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| 169 | <hr> |
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| 170 | |
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| 171 | <h2>Local logs</h2> |
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| 172 | <a href="/logs/">Log</a> directory |
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| 173 | |
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| 174 | <% |
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| 175 | out.println(ServletUtil.htmlFooter()); |
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| 176 | %> |
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