Package org.apache.hadoop.nfs.nfs3.response

Examples of org.apache.hadoop.nfs.nfs3.response.PATHCONF3Response


    } catch (IOException e) {
      LOG.error("Invalid PATHCONF request");
      return new PATHCONF3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle handle = request.getHandle();
    Nfs3FileAttributes attrs;

    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS PATHCONF fileId: " + handle.getFileId());
    }

    try {
      attrs = Nfs3Utils.getFileAttr(dfsClient, Nfs3Utils.getFileIdPath(handle),
          iug);
      if (attrs == null) {
        LOG.info("Can't get path for fileId:" + handle.getFileId());
        return new PATHCONF3Response(Nfs3Status.NFS3ERR_STALE);
      }

      return new PATHCONF3Response(Nfs3Status.NFS3_OK, attrs, 0,
          HdfsConstants.MAX_PATH_LENGTH, true, false, false, true);
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      LOG.error("Invalid COMMIT request");
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }

    FileHandle handle = request.getHandle();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS COMMIT fileId: " + handle.getFileId() + " offset="
          + request.getOffset() + " count=" + request.getCount());
    }

    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());
        return new COMMIT3Response(Nfs3Status.NFS3ERR_STALE);
      }
     
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        return new COMMIT3Response(Nfs3Status.NFS3ERR_ACCES, new WccData(
            Nfs3Utils.getWccAttr(preOpAttr), preOpAttr),
            Nfs3Constant.WRITE_COMMIT_VERF);
      }
     
      long commitOffset = (request.getCount() == 0) ? 0
          : (request.getOffset() + request.getCount());
     
      // Insert commit as an async request
      writeManager.handleCommit(dfsClient, handle, commitOffset, channel, xid,
          preOpAttr);
      return null;
    } catch (IOException e) {
      LOG.warn("Exception ", e);
      Nfs3FileAttributes postOpAttr = null;
      try {
        postOpAttr = writeManager.getFileAttr(dfsClient, handle, iug);
      } catch (IOException e1) {
        LOG.info("Can't get postOpAttr for fileId: " + handle.getFileId(), e1);
      }
      WccData fileWcc = new WccData(Nfs3Utils.getWccAttr(preOpAttr), postOpAttr);
      return new COMMIT3Response(Nfs3Status.NFS3ERR_IO, fileWcc,
          Nfs3Constant.WRITE_COMMIT_VERF);
    }
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      LOG.error("Invalid GETATTR request");
      response.setStatus(Nfs3Status.NFS3ERR_INVAL);
      return response;
    }

    FileHandle handle = request.getHandle();
    if (LOG.isTraceEnabled()) {
      LOG.trace("GETATTR for fileId: " + handle.getFileId());
    }

    Nfs3FileAttributes attrs = null;
    try {
      attrs = writeManager.getFileAttr(dfsClient, handle, iug);
    } catch (RemoteException r) {
      LOG.warn("Exception ", r);
      IOException io = r.unwrapRemoteException();
      /**
       * AuthorizationException can be thrown if the user can't be proxy'ed.
       */
      if (io instanceof AuthorizationException) {
        return new GETATTR3Response(Nfs3Status.NFS3ERR_ACCES);
      } else {
        return new GETATTR3Response(Nfs3Status.NFS3ERR_IO);
      }
    } catch (IOException e) {
      LOG.info("Can't get file attribute, fileId=" + handle.getFileId(), e);
      response.setStatus(Nfs3Status.NFS3ERR_IO);
      return response;
    }
    if (attrs == null) {
      LOG.error("Can't get path for fileId:" + handle.getFileId());
      response.setStatus(Nfs3Status.NFS3ERR_STALE);
      return response;
    }
    response.setPostOpAttr(attrs);
    return response;
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      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()) {
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    } catch (IOException e) {
      LOG.error("Invalid LOOKUP request");
      return new LOOKUP3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle dirHandle = request.getHandle();
    String fileName = request.getName();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS LOOKUP dir fileId: " + dirHandle.getFileId() + " name: "
          + fileName);
    }

    try {
      String dirFileIdPath = Nfs3Utils.getFileIdPath(dirHandle);
      Nfs3FileAttributes postOpObjAttr = writeManager.getFileAttr(dfsClient,
          dirHandle, fileName);
      if (postOpObjAttr == null) {
        if (LOG.isDebugEnabled()) {
          LOG.debug("NFS LOOKUP fileId: " + dirHandle.getFileId() + " name:"
              + fileName + " does not exist");
        }
        Nfs3FileAttributes postOpDirAttr = Nfs3Utils.getFileAttr(dfsClient,
            dirFileIdPath, iug);
        return new LOOKUP3Response(Nfs3Status.NFS3ERR_NOENT, null, null,
            postOpDirAttr);
      }

      Nfs3FileAttributes postOpDirAttr = Nfs3Utils.getFileAttr(dfsClient,
          dirFileIdPath, iug);
      if (postOpDirAttr == null) {
        LOG.info("Can't get path for dir fileId:" + dirHandle.getFileId());
        return new LOOKUP3Response(Nfs3Status.NFS3ERR_STALE);
      }
      FileHandle fileHandle = new FileHandle(postOpObjAttr.getFileId());
      return new LOOKUP3Response(Nfs3Status.NFS3_OK, fileHandle, postOpObjAttr,
          postOpDirAttr);

    } catch (IOException e) {
      LOG.warn("Exception ", e);
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    } catch (IOException e) {
      LOG.error("Invalid ACCESS request");
      return new ACCESS3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle handle = request.getHandle();
    Nfs3FileAttributes attrs;

    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS ACCESS fileId: " + handle.getFileId());
    }

    try {
      // HDFS-5804 removed supserUserClient access
      attrs = writeManager.getFileAttr(dfsClient, handle, iug);

      if (attrs == null) {
        LOG.error("Can't get path for fileId:" + handle.getFileId());
        return new ACCESS3Response(Nfs3Status.NFS3ERR_STALE);
      }
      int access = Nfs3Utils.getAccessRightsForUserGroup(
          securityHandler.getUid(), securityHandler.getGid(), attrs);
     
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    } 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) {
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    }

    long offset = request.getOffset();
    int count = request.getCount();

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

    Nfs3FileAttributes attrs;
    boolean eof;
    if (count == 0) {
      // Only do access check.
      try {
        // Don't read from cache. Client may not have read permission.
        attrs = Nfs3Utils.getFileAttr(dfsClient,
            Nfs3Utils.getFileIdPath(handle), iug);
      } catch (IOException e) {
        if (LOG.isDebugEnabled()) {
          LOG.debug("Get error accessing file, fileId:" + handle.getFileId(), e);
        }
        return new READ3Response(Nfs3Status.NFS3ERR_IO);
      }
      if (attrs == null) {
        if (LOG.isDebugEnabled()) {
          LOG.debug("Can't get path for fileId:" + handle.getFileId());
        }
        return new READ3Response(Nfs3Status.NFS3ERR_NOENT);
      }
      int access = Nfs3Utils.getAccessRightsForUserGroup(
          securityHandler.getUid(), securityHandler.getGid(), attrs);
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    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);
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    } catch (IOException e) {
      LOG.error("Invalid CREATE request");
      return new CREATE3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    FileHandle dirHandle = request.getHandle();
    String fileName = request.getName();
    if (LOG.isDebugEnabled()) {
      LOG.debug("NFS CREATE dir fileId: " + dirHandle.getFileId()
          + " filename: " + fileName);
    }

    int createMode = request.getMode();
    if ((createMode != Nfs3Constant.CREATE_EXCLUSIVE)
        && request.getObjAttr().getUpdateFields().contains(SetAttrField.SIZE)
        && request.getObjAttr().getSize() != 0) {
      LOG.error("Setting file size is not supported when creating file: "
          + fileName + " dir fileId:" + dirHandle.getFileId());
      return new CREATE3Response(Nfs3Status.NFS3ERR_INVAL);
    }

    HdfsDataOutputStream fos = null;
    String dirFileIdPath = Nfs3Utils.getFileIdPath(dirHandle);
    Nfs3FileAttributes preOpDirAttr = null;
    Nfs3FileAttributes postOpObjAttr = null;
    FileHandle fileHandle = null;
    WccData dirWcc = null;
    try {
      preOpDirAttr = Nfs3Utils.getFileAttr(dfsClient, dirFileIdPath, iug);
      if (preOpDirAttr == null) {
        LOG.error("Can't get path for dirHandle:" + dirHandle);
        return new CREATE3Response(Nfs3Status.NFS3ERR_STALE);
      }
     
      if (!checkAccessPrivilege(client, AccessPrivilege.READ_WRITE)) {
        return new CREATE3Response(Nfs3Status.NFS3ERR_ACCES, null,
            preOpDirAttr, new WccData(Nfs3Utils.getWccAttr(preOpDirAttr),
                preOpDirAttr));
      }

      String fileIdPath = Nfs3Utils.getFileIdPath(dirHandle) + "/" + fileName;
      SetAttr3 setAttr3 = request.getObjAttr();
      assert (setAttr3 != null);
      FsPermission permission = setAttr3.getUpdateFields().contains(
          SetAttrField.MODE) ? new FsPermission((short) setAttr3.getMode())
          : FsPermission.getDefault().applyUMask(umask);
         
      EnumSet<CreateFlag> flag = (createMode != Nfs3Constant.CREATE_EXCLUSIVE) ?
          EnumSet.of(CreateFlag.CREATE, CreateFlag.OVERWRITE) :
          EnumSet.of(CreateFlag.CREATE);
     
      fos = new HdfsDataOutputStream(dfsClient.create(fileIdPath, permission,
          flag, false, replication, blockSize, null, bufferSize, null),
          statistics);
     
      if ((createMode == Nfs3Constant.CREATE_UNCHECKED)
          || (createMode == Nfs3Constant.CREATE_GUARDED)) {
        // Set group if it's not specified in the request.
        if (!setAttr3.getUpdateFields().contains(SetAttrField.GID)) {
          setAttr3.getUpdateFields().add(SetAttrField.GID);
          setAttr3.setGid(securityHandler.getGid());
        }
        setattrInternal(dfsClient, fileIdPath, setAttr3, false);
      }

      postOpObjAttr = Nfs3Utils.getFileAttr(dfsClient, fileIdPath, iug);
      dirWcc = Nfs3Utils.createWccData(Nfs3Utils.getWccAttr(preOpDirAttr),
          dfsClient, dirFileIdPath, iug);
     
      // Add open stream
      OpenFileCtx openFileCtx = new OpenFileCtx(fos, postOpObjAttr,
          writeDumpDir + "/" + postOpObjAttr.getFileId(), dfsClient, iug);
      fileHandle = new FileHandle(postOpObjAttr.getFileId());
      if (!writeManager.addOpenFileStream(fileHandle, openFileCtx)) {
        LOG.warn("Can't add more stream, close it."
            + " Future write will become append");
        fos.close();
        fos = null;
      } else {
        if (LOG.isDebugEnabled()) {
          LOG.debug("Opened stream for file:" + fileName + ", fileId:"
              + fileHandle.getFileId());
        }
      }
     
    } catch (IOException e) {
      LOG.error("Exception", e);
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