Package org.apache.hadoop.nfs.nfs3.request

Examples of org.apache.hadoop.nfs.nfs3.request.CREATE3Request


        entries[i] = new READDIRPLUS3Response.EntryPlus3(fileId,
            fstatus[i].getLocalName(), fileId, attr, childHandle);
      }
    }

    DirListPlus3 dirListPlus = new READDIRPLUS3Response.DirListPlus3(entries,
        eof);
    return new READDIRPLUS3Response(Nfs3Status.NFS3_OK, postOpDirAttr,
        dirStatus.getModificationTime(), dirListPlus);
  }
View Full Code Here


    }
  }

  public READLINK3Response readlink(XDR xdr, SecurityHandler securityHandler,
      InetAddress client) {
    READLINK3Response response = new READLINK3Response(Nfs3Status.NFS3_OK);

    if (!checkAccessPrivilege(client, AccessPrivilege.READ_ONLY)) {
      response.setStatus(Nfs3Status.NFS3ERR_ACCES);
      return response;
    }

    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }

    READLINK3Request request = null;

    try {
      request = new READLINK3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid READLINK request");
      return new READLINK3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS READLINK fileId: " + handle.getFileId());
    }

    String fileIdPath = Nfs3Utils.getFileIdPath(handle);
    try {
      String target = dfsClient.getLinkTarget(fileIdPath);

      Nfs3FileAttributes postOpAttr = Nfs3Utils.getFileAttr(dfsClient,
          fileIdPath, iug);
      if (postOpAttr == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        return new READLINK3Response(Nfs3Status.NFS3ERR_STALE);
      }
      if (postOpAttr.getType() != NfsFileType.NFSLNK.toValue()) {
        LOG.error("Not a symlink, fileId:" + handle.getFileId());
        return new READLINK3Response(Nfs3Status.NFS3ERR_INVAL);
      }
      if (target == null) {
        LOG.error("Symlink target should not be null, fileId:"
            + handle.getFileId());
        return new READLINK3Response(Nfs3Status.NFS3ERR_SERVERFAULT);
      }
      int rtmax = config.getInt(Nfs3Constant.MAX_READ_TRANSFER_SIZE_KEY,
              Nfs3Constant.MAX_READ_TRANSFER_SIZE_DEFAULT);
      if (rtmax < target.getBytes().length) {
        LOG.error("Link size: " + target.getBytes().length
            + " is larger than max transfer size: " + rtmax);
        return new READLINK3Response(Nfs3Status.NFS3ERR_IO, postOpAttr,
            new byte[0]);
      }

      return new READLINK3Response(Nfs3Status.NFS3_OK, postOpAttr,
          target.getBytes());

    } catch (IOException e) {
      LOG.warn("Readlink error: " + e.getClass(), e);
      if (e instanceof FileNotFoundException) {
        return new READLINK3Response(Nfs3Status.NFS3ERR_STALE);
      } else if (e instanceof AccessControlException) {
        return new READLINK3Response(Nfs3Status.NFS3ERR_ACCES);
      }
      return new READLINK3Response(Nfs3Status.NFS3ERR_IO);
    }
  }
View Full Code Here

  }
 
  @Override
  public REMOVE3Response remove(XDR xdr,
      SecurityHandler securityHandler, InetAddress client) {
    REMOVE3Response response = new REMOVE3Response(Nfs3Status.NFS3_OK);
    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
   
    REMOVE3Request request = null;
    try {
      request = new REMOVE3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid REMOVE request");
      return new REMOVE3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    FileHandle dirHandle = request.getHandle();
    String fileName = request.getName();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS REMOVE dir fileId: " + dirHandle.getFileId()
          + " fileName: " + fileName);
    }

    String dirFileIdPath = Nfs3Utils.getFileIdPath(dirHandle);
    Nfs3FileAttributes preOpDirAttr = null;
    Nfs3FileAttributes postOpDirAttr = null;
    try {
      preOpDirAttr =  Nfs3Utils.getFileAttr(dfsClient, dirFileIdPath, iug);
      if (preOpDirAttr == null) {
        LOG.info("Can't get path for dir fileId:" + dirHandle.getFileId());
        return new REMOVE3Response(Nfs3Status.NFS3ERR_STALE);
      }

      String fileIdPath = dirFileIdPath + "/" + fileName;
      HdfsFileStatus fstat = Nfs3Utils.getFileStatus(dfsClient, fileIdPath);
      if (fstat == null) {
        WccData dirWcc = new WccData(Nfs3Utils.getWccAttr(preOpDirAttr),
            preOpDirAttr);
        return new REMOVE3Response(Nfs3Status.NFS3ERR_NOENT, dirWcc);
      }
      if (fstat.isDir()) {
        WccData dirWcc = new WccData(Nfs3Utils.getWccAttr(preOpDirAttr),
            preOpDirAttr);
        return new REMOVE3Response(Nfs3Status.NFS3ERR_ISDIR, dirWcc);
      }

      boolean result = dfsClient.delete(fileIdPath, false);
      WccData dirWcc = Nfs3Utils.createWccData(
          Nfs3Utils.getWccAttr(preOpDirAttr), dfsClient, dirFileIdPath, iug);

      if (!result) {
        return new REMOVE3Response(Nfs3Status.NFS3ERR_ACCES, dirWcc);
      }
      return new REMOVE3Response(Nfs3Status.NFS3_OK, dirWcc);
    } catch (IOException e) {
      LOG.warn("Exception ", e);
      // Try to return correct WccData
      if (postOpDirAttr == null) {
        try {
          postOpDirAttr = Nfs3Utils.getFileAttr(dfsClient, dirFileIdPath, iug);
        } catch (IOException e1) {
          LOG.info("Can't get postOpDirAttr for " + dirFileIdPath, e1);
        }
      }
      WccData dirWcc = new WccData(Nfs3Utils.getWccAttr(preOpDirAttr),
          postOpDirAttr);
      if (e instanceof AccessControlException) {
        return new REMOVE3Response(Nfs3Status.NFS3ERR_PERM, dirWcc);
      } else {
        return new REMOVE3Response(Nfs3Status.NFS3ERR_IO, dirWcc);
      }
    }
  }
View Full Code Here

  }

  @Override
  public RENAME3Response rename(XDR xdr, SecurityHandler securityHandler,
      InetAddress client) {
    RENAME3Response response = new RENAME3Response(Nfs3Status.NFS3_OK);
    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
   
    RENAME3Request request = null;
    try {
      request = new RENAME3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid RENAME request");
      return new RENAME3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle fromHandle = request.getFromDirHandle();
    String fromName = request.getFromName();
    FileHandle toHandle = request.getToDirHandle();
    String toName = request.getToName();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS RENAME from: " + fromHandle.getFileId() + "/" + fromName
          + " to: " + toHandle.getFileId() + "/" + toName);
    }

    String fromDirFileIdPath = Nfs3Utils.getFileIdPath(fromHandle);
    String toDirFileIdPath = Nfs3Utils.getFileIdPath(toHandle);
    Nfs3FileAttributes fromPreOpAttr = null;
    Nfs3FileAttributes toPreOpAttr = null;
    WccData fromDirWcc = null;
    WccData toDirWcc = null;
    try {
      fromPreOpAttr = Nfs3Utils.getFileAttr(dfsClient, fromDirFileIdPath, iug);
      if (fromPreOpAttr == null) {
        LOG.info("Can't get path for fromHandle fileId:"
            + fromHandle.getFileId());
        return new RENAME3Response(Nfs3Status.NFS3ERR_STALE);
      }

      toPreOpAttr = Nfs3Utils.getFileAttr(dfsClient, toDirFileIdPath, iug);
      if (toPreOpAttr == null) {
        LOG.info("Can't get path for toHandle fileId:" + toHandle.getFileId());
        return new RENAME3Response(Nfs3Status.NFS3ERR_STALE);
      }
     
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        WccData fromWcc = new WccData(Nfs3Utils.getWccAttr(fromPreOpAttr),
            fromPreOpAttr);
        WccData toWcc = new WccData(Nfs3Utils.getWccAttr(toPreOpAttr),
            toPreOpAttr);
        return new RENAME3Response(Nfs3Status.NFS3ERR_ACCES, fromWcc, toWcc);
      }

      String src = fromDirFileIdPath + "/" + fromName;
      String dst = toDirFileIdPath + "/" + toName;

      dfsClient.rename(src, dst, Options.Rename.NONE);

      // Assemble the reply
      fromDirWcc = Nfs3Utils.createWccData(Nfs3Utils.getWccAttr(fromPreOpAttr),
          dfsClient, fromDirFileIdPath, iug);
      toDirWcc = Nfs3Utils.createWccData(Nfs3Utils.getWccAttr(toPreOpAttr),
          dfsClient, toDirFileIdPath, iug);
      return new RENAME3Response(Nfs3Status.NFS3_OK, fromDirWcc, toDirWcc);
    } catch (IOException e) {
      LOG.warn("Exception ", e);
      // Try to return correct WccData     
      try {
        fromDirWcc = Nfs3Utils.createWccData(
            Nfs3Utils.getWccAttr(fromPreOpAttr), dfsClient, fromDirFileIdPath,
            iug);
        toDirWcc = Nfs3Utils.createWccData(Nfs3Utils.getWccAttr(toPreOpAttr),
            dfsClient, toDirFileIdPath, iug);
      } catch (IOException e1) {
        LOG.info("Can't get postOpDirAttr for " + fromDirFileIdPath + " or"
            + toDirFileIdPath, e1);
      }
      if (e instanceof AccessControlException) {
        return new RENAME3Response(Nfs3Status.NFS3ERR_PERM, fromDirWcc,
            toDirWcc);
      } else {
        return new RENAME3Response(Nfs3Status.NFS3ERR_IO, fromDirWcc, toDirWcc);
      }
    }
  }
View Full Code Here

  }

  @Override
  public RMDIR3Response rmdir(XDR xdr, SecurityHandler securityHandler,
      InetAddress client) {
    RMDIR3Response response = new RMDIR3Response(Nfs3Status.NFS3_OK);
    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
   
    RMDIR3Request request = null;
    try {
      request = new RMDIR3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid RMDIR request");
      return new RMDIR3Response(Nfs3Status.NFS3ERR_INVAL);
    }
    FileHandle dirHandle = request.getHandle();
    String fileName = request.getName();

    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS RMDIR dir fileId: " + dirHandle.getFileId()
          + " fileName: " + fileName);
    }

    String dirFileIdPath = Nfs3Utils.getFileIdPath(dirHandle);
    Nfs3FileAttributes preOpDirAttr = null;
    Nfs3FileAttributes postOpDirAttr = null;
    try {
      preOpDirAttr = Nfs3Utils.getFileAttr(dfsClient, dirFileIdPath, iug);
      if (preOpDirAttr == null) {
        LOG.info("Can't get path for dir fileId:" + dirHandle.getFileId());
        return new RMDIR3Response(Nfs3Status.NFS3ERR_STALE);
      }
     
      WccData errWcc = new WccData(Nfs3Utils.getWccAttr(preOpDirAttr),
          preOpDirAttr);
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_ACCES, errWcc);
      }

      String fileIdPath = dirFileIdPath + "/" + fileName;
      HdfsFileStatus fstat = Nfs3Utils.getFileStatus(dfsClient, fileIdPath);
      if (fstat == null) {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_NOENT, errWcc);
      }
      if (!fstat.isDir()) {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_NOTDIR, errWcc);
      }
     
      if (fstat.getChildrenNum() > 0) {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_NOTEMPTY, errWcc);
      }

      boolean result = dfsClient.delete(fileIdPath, false);
      WccData dirWcc = Nfs3Utils.createWccData(
          Nfs3Utils.getWccAttr(preOpDirAttr), dfsClient, dirFileIdPath, iug);
      if (!result) {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_ACCES, dirWcc);
      }

      return new RMDIR3Response(Nfs3Status.NFS3_OK, dirWcc);
    } catch (IOException e) {
      LOG.warn("Exception ", e);
      // Try to return correct WccData
      if (postOpDirAttr == null) {
        try {
          postOpDirAttr = Nfs3Utils.getFileAttr(dfsClient, dirFileIdPath, iug);
        } catch (IOException e1) {
          LOG.info("Can't get postOpDirAttr for " + dirFileIdPath, e1);
        }
      }
      WccData dirWcc = new WccData(Nfs3Utils.getWccAttr(preOpDirAttr),
          postOpDirAttr);
      if (e instanceof AccessControlException) {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_PERM, dirWcc);
      } else {
        return new RMDIR3Response(Nfs3Status.NFS3ERR_IO, dirWcc);
      }
    }
  }
View Full Code Here

  }

  @Override
  public SETATTR3Response setattr(XDR xdr, SecurityHandler securityHandler,
      InetAddress client) {
    SETATTR3Response response = new SETATTR3Response(Nfs3Status.NFS3_OK);
    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
   
    SETATTR3Request request = null;
    try {
      request = new SETATTR3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid SETATTR request");
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }

    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS SETATTR fileId: " + handle.getFileId());
    }

    if (request.getAttr().getUpdateFields().contains(SetAttrField.SIZE)) {
      LOG.error("Setting file size is not supported when setattr, fileId: "
          + handle.getFileId());
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }

    String fileIdPath = Nfs3Utils.getFileIdPath(handle);
    Nfs3FileAttributes preOpAttr = null;
    try {
      preOpAttr = Nfs3Utils.getFileAttr(dfsClient, fileIdPath, iug);
      if (preOpAttr == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        response.setStatus(Nfs3Status.NFS3ERR_STALE);
        return response;
      }
      WccAttr preOpWcc = Nfs3Utils.getWccAttr(preOpAttr);
      if (request.isCheck()) {
        if (!preOpAttr.getCtime().equals(request.getCtime())) {
          WccData wccData = new WccData(preOpWcc, preOpAttr);
          return new SETATTR3Response(Nfs3Status.NFS3ERR_NOT_SYNC, wccData);
        }
      }
     
      // check the write access privilege
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        return new SETATTR3Response(Nfs3Status.NFS3ERR_ACCES, new WccData(
            preOpWcc, preOpAttr));
      }

      setattrInternal(dfsClient, fileIdPath, request.getAttr(), true);
      Nfs3FileAttributes postOpAttr = Nfs3Utils.getFileAttr(dfsClient,
          fileIdPath, iug);
      WccData wccData = new WccData(preOpWcc, postOpAttr);
      return new SETATTR3Response(Nfs3Status.NFS3_OK, wccData);
    } catch (IOException e) {
      LOG.warn("Exception ", e);
      WccData wccData = null;
      try {
        wccData = Nfs3Utils.createWccData(Nfs3Utils.getWccAttr(preOpAttr),
            dfsClient, fileIdPath, iug);
      } catch (IOException e1) {
        LOG.info("Can't get postOpAttr for fileIdPath: " + fileIdPath, e1);
      }
      if (e instanceof AccessControlException) {
        return new SETATTR3Response(Nfs3Status.NFS3ERR_ACCES, wccData);
      } else {
        return new SETATTR3Response(Nfs3Status.NFS3ERR_IO, wccData);
      }
    }
  }
View Full Code Here

  }

  @Override
  public SYMLINK3Response symlink(XDR xdr, SecurityHandler securityHandler,
      InetAddress client) {
    SYMLINK3Response response = new SYMLINK3Response(Nfs3Status.NFS3_OK);

    if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
      response.setStatus(Nfs3Status.NFS3ERR_ACCES);
      return response;
    }

    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }

    SYMLINK3Request request = null;
    try {
      request = new SYMLINK3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid SYMLINK request");
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }

    FileHandle dirHandle = request.getHandle();
    String name = request.getName();
    String symData = request.getSymData();
    String linkDirIdPath = Nfs3Utils.getFileIdPath(dirHandle);
    // Don't do any name check to source path, just leave it to HDFS
    String linkIdPath = linkDirIdPath + "/" + name;
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS SYMLINK, target: " + symData + " link: " + linkIdPath);
    }

    try {
      WccData dirWcc = response.getDirWcc();
      WccAttr preOpAttr = Nfs3Utils.getWccAttr(dfsClient, linkDirIdPath);
      dirWcc.setPreOpAttr(preOpAttr);

      dfsClient.createSymlink(symData, linkIdPath, false);
      // Set symlink attr is considered as to change the attr of the target
      // file. So no need to set symlink attr here after it's created.

      HdfsFileStatus linkstat = dfsClient.getFileLinkInfo(linkIdPath);
      Nfs3FileAttributes objAttr = Nfs3Utils.getNfs3FileAttrFromFileStatus(
          linkstat, iug);
      dirWcc
          .setPostOpAttr(Nfs3Utils.getFileAttr(dfsClient, linkDirIdPath, iug));

      return new SYMLINK3Response(Nfs3Status.NFS3_OK, new FileHandle(
          objAttr.getFileId()), objAttr, dirWcc);

    } catch (IOException e) {
      LOG.warn("Exception:" + e);
      response.setStatus(Nfs3Status.NFS3ERR_IO);
      return response;
    }
  }
View Full Code Here

  }

  @Override
  public WRITE3Response write(XDR xdr, Channel channel, int xid,
      SecurityHandler securityHandler, InetAddress client) {
    WRITE3Response response = new WRITE3Response(Nfs3Status.NFS3_OK);

    DFSClient dfsClient = clientCache.getDfsClient(securityHandler.getUser());
    if (dfsClient == null) {
      response.setStatus(Nfs3Status.NFS3ERR_SERVERFAULT);
      return response;
    }
   
    WRITE3Request request = null;

    try {
      request = new WRITE3Request(xdr);
    } catch (IOException e) {
      LOG.error("Invalid WRITE request");
      return new WRITE3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    long offset = request.getOffset();
    int count = request.getCount();
    WriteStableHow stableHow = request.getStableHow();
    byte[] data = request.getData().array();
    if (data.length < count) {
      LOG.error("Invalid argument, data size is less than count in request");
      return new WRITE3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS WRITE fileId: " + handle.getFileId() + " offset: "
          + offset + " length:" + count + " stableHow:" + stableHow.getValue()
          + " xid:" + xid);
    }

    Nfs3FileAttributes preOpAttr = null;
    try {
      preOpAttr = writeManager.getFileAttr(dfsClient, handle, iug);
      if (preOpAttr == null) {
        LOG.error("Can't get path for fileId:" + handle.getFileId());
        return new WRITE3Response(Nfs3Status.NFS3ERR_STALE);
      }
     
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        return new WRITE3Response(Nfs3Status.NFS3ERR_ACCES, new WccData(
            Nfs3Utils.getWccAttr(preOpAttr), preOpAttr), 0, stableHow,
            Nfs3Constant.WRITE_COMMIT_VERF);
      }
     
      if (LOG.isDebugEnabled()) {
        LOG.debug("requesed offset=" + offset + " and current filesize="
            + preOpAttr.getSize());
      }

      writeManager.handleWrite(dfsClient, request, channel, xid, preOpAttr);

    } catch (IOException e) {
      LOG.info("Error writing to fileId " + handle.getFileId() + " at offset "
          + offset + " and length " + data.length, e);
      // Try to return WccData
      Nfs3FileAttributes postOpAttr = null;
      try {
        postOpAttr = writeManager.getFileAttr(dfsClient, handle, iug);
      } catch (IOException e1) {
        LOG.info("Can't get postOpAttr for fileId: " + handle.getFileId(), e1);
      }
      WccAttr attr = preOpAttr == null ? null : Nfs3Utils.getWccAttr(preOpAttr);
      WccData fileWcc = new WccData(attr, postOpAttr);
      return new WRITE3Response(Nfs3Status.NFS3ERR_IO, fileWcc, 0,
          request.getStableHow(), Nfs3Constant.WRITE_COMMIT_VERF);
    }

    return null;
  }
View Full Code Here

      if (preOpAttr == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        response.setStatus(Nfs3Status.NFS3ERR_STALE);
        return response;
      }
      WccAttr preOpWcc = Nfs3Utils.getWccAttr(preOpAttr);
      if (request.isCheck()) {
        if (!preOpAttr.getCtime().equals(request.getCtime())) {
          WccData wccData = new WccData(preOpWcc, preOpAttr);
          return new SETATTR3Response(Nfs3Status.NFS3ERR_NOT_SYNC, wccData);
        }
View Full Code Here

      try {
        postOpAttr = writeManager.getFileAttr(dfsClient, handle, iug);
      } catch (IOException e1) {
        LOG.info("Can't get postOpAttr for fileId: " + handle.getFileId(), e1);
      }
      WccAttr attr = preOpAttr == null ? null : Nfs3Utils.getWccAttr(preOpAttr);
      WccData fileWcc = new WccData(attr, postOpAttr);
      return new WRITE3Response(Nfs3Status.NFS3ERR_IO, fileWcc, 0,
          request.getStableHow(), Nfs3Constant.WRITE_COMMIT_VERF);
    }
View Full Code Here

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