Beispiel #1
0
  /**
   * Initialize the backend systems, the log handler and the restrictor. A subclass can tune this
   * step by overriding {@link #createRestrictor(String)} and {@link
   * #createLogHandler(ServletConfig, boolean)}
   *
   * @param pServletConfig servlet configuration
   */
  @Override
  public void init(ServletConfig pServletConfig) throws ServletException {
    super.init(pServletConfig);

    Configuration config = initConfig(pServletConfig);

    // Create a log handler early in the lifecycle, but not too early
    String logHandlerClass = config.get(ConfigKey.LOGHANDLER_CLASS);
    logHandler =
        logHandlerClass != null
            ? (LogHandler) ClassUtil.newInstance(logHandlerClass)
            : createLogHandler(pServletConfig, Boolean.valueOf(config.get(ConfigKey.DEBUG)));

    // Different HTTP request handlers
    httpGetHandler = newGetHttpRequestHandler();
    httpPostHandler = newPostHttpRequestHandler();

    if (restrictor == null) {
      restrictor =
          createRestrictor(NetworkUtil.replaceExpression(config.get(ConfigKey.POLICY_LOCATION)));
    } else {
      logHandler.info("Using custom access restriction provided by " + restrictor);
    }
    configMimeType = config.get(ConfigKey.MIME_TYPE);
    backendManager = new BackendManager(config, logHandler, restrictor);
    requestHandler = new HttpRequestHandler(config, backendManager, logHandler);

    initDiscoveryMulticast(config);
  }
Beispiel #2
0
  // Examines servlet config and servlet context for configuration parameters.
  // Configuration from the servlet context overrides servlet parameters defined in web.xml
  Configuration initConfig(ServletConfig pConfig) {
    Configuration config =
        new Configuration(ConfigKey.AGENT_ID, NetworkUtil.getAgentId(hashCode(), "servlet"));
    // From ServletContext ....
    config.updateGlobalConfiguration(new ServletConfigFacade(pConfig));
    // ... and ServletConfig
    config.updateGlobalConfiguration(new ServletContextFacade(getServletContext()));

    // Set type last and overwrite anything written
    config.updateGlobalConfiguration(
        Collections.singletonMap(ConfigKey.AGENT_TYPE.getKeyValue(), "servlet"));
    return config;
  }
Beispiel #3
0
 // For war agent needs to be switched on
 private boolean listenForDiscoveryMcRequests(Configuration pConfig) {
   // Check for system props, system env and agent config
   boolean sysProp =
       System.getProperty("jolokia." + ConfigKey.DISCOVERY_ENABLED.getKeyValue()) != null;
   boolean env = System.getenv("JOLOKIA_DISCOVERY") != null;
   boolean config = pConfig.getAsBoolean(ConfigKey.DISCOVERY_ENABLED);
   return sysProp || env || config;
 }
Beispiel #4
0
 // Try to find an URL for system props or config
 private String findAgentUrl(Configuration pConfig) {
   // System property has precedence
   String url = System.getProperty("jolokia." + ConfigKey.DISCOVERY_AGENT_URL.getKeyValue());
   if (url == null) {
     url = System.getenv("JOLOKIA_DISCOVERY_AGENT_URL");
     if (url == null) {
       url = pConfig.get(ConfigKey.DISCOVERY_AGENT_URL);
     }
   }
   return NetworkUtil.replaceExpression(url);
 }
Beispiel #5
0
 protected void doGet(HttpServletRequest req, HttpServletResponse resp)
     throws ServletException, IOException {
   Map root = new HashMap();
   Connection conn = null;
   conn = ConFact.getInstance().makeConnection();
   String id = req.getParameter("id");
   String sql = "select title,description,language_id from film where film_id=" + id + ";";
   java.sql.PreparedStatement pst;
   try {
     pst = conn.prepareStatement(sql);
     ResultSet rs = pst.executeQuery();
     while (rs.next()) {
       java.sql.PreparedStatement pst1;
       String sql1 = "select name from language where language_id=" + rs.getString(3) + ";";
       pst1 = conn.prepareStatement(sql1);
       ResultSet rs1 = pst1.executeQuery();
       while (rs1.next()) {
         Template t = cfg.getTemplate("test.ftl");
         root.put("title", rs.getString(1));
         root.put("description", rs.getString(2));
         root.put("language", rs1.getString(1));
         resp.setContentType("text/html; charset=" + t.getEncoding());
         Writer out = resp.getWriter();
         t.process(root, out);
       }
       rs1.close();
     }
     rs.close();
     pst.close();
     conn.close();
   } catch (TemplateException e) {
     e.printStackTrace();
   } catch (SQLException e1) {
     e1.printStackTrace();
   }
 }
 /** Set the session timeout to the configured value */
 protected void setSessionTimeout(HttpSession session) {
   Configuration config = CurrentConfig.getCurrentConfig();
   setSessionTimeout(
       session, config.getTimeInterval(PARAM_UI_SESSION_TIMEOUT, DEFAULT_UI_SESSION_TIMEOUT));
 }
Beispiel #7
0
  public void init() {
    cfg = new Configuration();

    cfg.setServletContextForTemplateLoading(getServletContext(), "WEB-INF/templates");
  }
  public void generateFileChunks(JspWriter out, HttpServletRequest req, Configuration conf)
      throws IOException, InterruptedException {
    long startOffset = 0;
    int datanodePort = 0;
    int chunkSizeToView = 0;

    String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
    int namenodeInfoPort = -1;
    if (namenodeInfoPortStr != null) namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);

    String filename = HtmlQuoting.unquoteHtmlChars(req.getParameter("filename"));
    if (filename == null) {
      out.print("Invalid input (filename absent)");
      return;
    }

    String blockIdStr = null;
    long blockId = 0;
    blockIdStr = req.getParameter("blockId");
    if (blockIdStr == null) {
      out.print("Invalid input (blockId absent)");
      return;
    }
    blockId = Long.parseLong(blockIdStr);

    String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
    UserGroupInformation ugi = JspHelper.getUGI(req, conf);
    final DFSClient dfs = JspHelper.getDFSClient(ugi, jspHelper.nameNodeAddr, conf);

    Token<BlockTokenIdentifier> accessToken = BlockTokenSecretManager.DUMMY_TOKEN;
    if (conf.getBoolean(DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY, false)) {
      List<LocatedBlock> blks =
          dfs.namenode.getBlockLocations(filename, 0, Long.MAX_VALUE).getLocatedBlocks();
      if (blks == null || blks.size() == 0) {
        out.print("Can't locate file blocks");
        dfs.close();
        return;
      }
      for (int i = 0; i < blks.size(); i++) {
        if (blks.get(i).getBlock().getBlockId() == blockId) {
          accessToken = blks.get(i).getBlockToken();
          break;
        }
      }
    }

    String blockGenStamp = null;
    long genStamp = 0;
    blockGenStamp = req.getParameter("genstamp");
    if (blockGenStamp == null) {
      out.print("Invalid input (genstamp absent)");
      return;
    }
    genStamp = Long.parseLong(blockGenStamp);

    String blockSizeStr;
    long blockSize = 0;
    blockSizeStr = req.getParameter("blockSize");
    if (blockSizeStr == null) {
      out.print("Invalid input (blockSize absent)");
      return;
    }
    blockSize = Long.parseLong(blockSizeStr);

    String chunkSizeToViewStr = req.getParameter("chunkSizeToView");
    if (chunkSizeToViewStr != null && Integer.parseInt(chunkSizeToViewStr) > 0)
      chunkSizeToView = Integer.parseInt(chunkSizeToViewStr);
    else chunkSizeToView = JspHelper.getDefaultChunkSize(conf);

    String startOffsetStr = req.getParameter("startOffset");
    if (startOffsetStr == null || Long.parseLong(startOffsetStr) < 0) startOffset = 0;
    else startOffset = Long.parseLong(startOffsetStr);

    String datanodePortStr = req.getParameter("datanodePort");
    if (datanodePortStr == null) {
      out.print("Invalid input (datanodePort absent)");
      return;
    }
    datanodePort = Integer.parseInt(datanodePortStr);
    out.print("<h3>File: ");
    JspHelper.printPathWithLinks(
        HtmlQuoting.quoteHtmlChars(filename), out, namenodeInfoPort, tokenString);
    out.print("</h3><hr>");
    String parent = new File(filename).getParent();
    JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, HtmlQuoting.quoteHtmlChars(parent));
    out.print("<hr>");
    out.print(
        "<a href=\"http://"
            + req.getServerName()
            + ":"
            + req.getServerPort()
            + "/browseDirectory.jsp?dir="
            + URLEncoder.encode(parent, "UTF-8")
            + "&namenodeInfoPort="
            + namenodeInfoPort
            + "\"><i>Go back to dir listing</i></a><br>");
    out.print("<a href=\"#viewOptions\">Advanced view/download options</a><br>");
    out.print("<hr>");

    // Determine the prev & next blocks
    long nextStartOffset = 0;
    long nextBlockSize = 0;
    String nextBlockIdStr = null;
    String nextGenStamp = null;
    String nextHost = req.getServerName();
    int nextPort = req.getServerPort();
    int nextDatanodePort = datanodePort;
    // determine data for the next link
    if (startOffset + chunkSizeToView >= blockSize) {
      // we have to go to the next block from this point onwards
      List<LocatedBlock> blocks =
          dfs.namenode.getBlockLocations(filename, 0, Long.MAX_VALUE).getLocatedBlocks();
      for (int i = 0; i < blocks.size(); i++) {
        if (blocks.get(i).getBlock().getBlockId() == blockId) {
          if (i != blocks.size() - 1) {
            LocatedBlock nextBlock = blocks.get(i + 1);
            nextBlockIdStr = Long.toString(nextBlock.getBlock().getBlockId());
            nextGenStamp = Long.toString(nextBlock.getBlock().getGenerationStamp());
            nextStartOffset = 0;
            nextBlockSize = nextBlock.getBlock().getNumBytes();
            DatanodeInfo d = jspHelper.bestNode(nextBlock);
            String datanodeAddr = d.getName();
            nextDatanodePort =
                Integer.parseInt(
                    datanodeAddr.substring(datanodeAddr.indexOf(':') + 1, datanodeAddr.length()));
            nextHost = InetAddress.getByName(d.getHost()).getCanonicalHostName();
            nextPort = d.getInfoPort();
          }
        }
      }
    } else {
      // we are in the same block
      nextBlockIdStr = blockIdStr;
      nextStartOffset = startOffset + chunkSizeToView;
      nextBlockSize = blockSize;
      nextGenStamp = blockGenStamp;
    }
    String nextUrl = null;
    if (nextBlockIdStr != null) {
      nextUrl =
          "http://"
              + nextHost
              + ":"
              + nextPort
              + "/browseBlock.jsp?blockId="
              + nextBlockIdStr
              + "&blockSize="
              + nextBlockSize
              + "&startOffset="
              + nextStartOffset
              + "&genstamp="
              + nextGenStamp
              + "&filename="
              + URLEncoder.encode(filename, "UTF-8")
              + "&chunkSizeToView="
              + chunkSizeToView
              + "&datanodePort="
              + nextDatanodePort
              + "&namenodeInfoPort="
              + namenodeInfoPort
              + JspHelper.getDelegationTokenUrlParam(tokenString);
      out.print("<a href=\"" + nextUrl + "\">View Next chunk</a>&nbsp;&nbsp;");
    }
    // determine data for the prev link
    String prevBlockIdStr = null;
    String prevGenStamp = null;
    long prevStartOffset = 0;
    long prevBlockSize = 0;
    String prevHost = req.getServerName();
    int prevPort = req.getServerPort();
    int prevDatanodePort = datanodePort;
    if (startOffset == 0) {
      List<LocatedBlock> blocks =
          dfs.namenode.getBlockLocations(filename, 0, Long.MAX_VALUE).getLocatedBlocks();
      for (int i = 0; i < blocks.size(); i++) {
        if (blocks.get(i).getBlock().getBlockId() == blockId) {
          if (i != 0) {
            LocatedBlock prevBlock = blocks.get(i - 1);
            prevBlockIdStr = Long.toString(prevBlock.getBlock().getBlockId());
            prevGenStamp = Long.toString(prevBlock.getBlock().getGenerationStamp());
            prevStartOffset = prevBlock.getBlock().getNumBytes() - chunkSizeToView;
            if (prevStartOffset < 0) prevStartOffset = 0;
            prevBlockSize = prevBlock.getBlock().getNumBytes();
            DatanodeInfo d = jspHelper.bestNode(prevBlock);
            String datanodeAddr = d.getName();
            prevDatanodePort =
                Integer.parseInt(
                    datanodeAddr.substring(datanodeAddr.indexOf(':') + 1, datanodeAddr.length()));
            prevHost = InetAddress.getByName(d.getHost()).getCanonicalHostName();
            prevPort = d.getInfoPort();
          }
        }
      }
    } else {
      // we are in the same block
      prevBlockIdStr = blockIdStr;
      prevStartOffset = startOffset - chunkSizeToView;
      if (prevStartOffset < 0) prevStartOffset = 0;
      prevBlockSize = blockSize;
      prevGenStamp = blockGenStamp;
    }

    String prevUrl = null;
    if (prevBlockIdStr != null) {
      prevUrl =
          "http://"
              + prevHost
              + ":"
              + prevPort
              + "/browseBlock.jsp?blockId="
              + prevBlockIdStr
              + "&blockSize="
              + prevBlockSize
              + "&startOffset="
              + prevStartOffset
              + "&filename="
              + URLEncoder.encode(filename, "UTF-8")
              + "&chunkSizeToView="
              + chunkSizeToView
              + "&genstamp="
              + prevGenStamp
              + "&datanodePort="
              + prevDatanodePort
              + "&namenodeInfoPort="
              + namenodeInfoPort
              + JspHelper.getDelegationTokenUrlParam(tokenString);
      out.print("<a href=\"" + prevUrl + "\">View Prev chunk</a>&nbsp;&nbsp;");
    }
    out.print("<hr>");
    out.print("<textarea cols=\"100\" rows=\"25\" wrap=\"virtual\" style=\"width:100%\" READONLY>");
    try {
      jspHelper.streamBlockInAscii(
          new InetSocketAddress(req.getServerName(), datanodePort),
          blockId,
          accessToken,
          genStamp,
          blockSize,
          startOffset,
          chunkSizeToView,
          out,
          conf);
    } catch (Exception e) {
      out.print(e);
    }
    out.print("</textarea>");
    dfs.close();
  }