Examples of org.apache.hadoop.net.unix.DomainSocket$Status

org.apache.hadoop.net.unix.DomainSocket
Tracks the reference count of the file descriptor, and also whether it is open or closed.

  private GetObjectExtendedResponse toGetObjectExtendedResponse(S3GetObjectResponse engineResponse) {
    GetObjectExtendedResponse response = new GetObjectExtendedResponse();
    int resultCode = engineResponse.getResultCode();


    GetObjectResult result = new GetObjectResult();
    Status param1 = new Status();
    param1.setCode( resultCode );
    param1.setDescription( engineResponse.getResultDescription());
    result.setStatus( param1 );


    if ( 200 == resultCode || 206 == resultCode )
    {
         result.setData(engineResponse.getData());

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    return request;
  }
  
  private DeleteObjectResponse toDeleteObjectResponse(S3Response engineResponse) {
    DeleteObjectResponse response = new DeleteObjectResponse();
    Status status = new Status();
    status.setCode(engineResponse.getResultCode());
    status.setDescription(engineResponse.getResultDescription());
    response.setDeleteObjectResponse(status);
    return response;
  }

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    /**
     * Stores the current state machine configuration ({@link Status#getAllStates()}) in the system context.
     * @param scInstance the state machine instance holding the current configuration
     */
    public void setSystemAllStatesVariable(final SCInstance scInstance) {
        Status currentStatus = scInstance.getCurrentStatus();
        scInstance.getSystemContext().setLocal(SCXMLSystemContext.ALL_STATES_KEY, currentStatus.getAllStates());
    }

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    return conf;
  }
  
  private static DomainPeer getDomainPeerToDn(Configuration conf)
      throws IOException {
    DomainSocket sock =
        DomainSocket.connect(conf.get(DFS_DOMAIN_SOCKET_PATH_KEY));
    return new DomainPeer(sock);
  }

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          ShortCircuitShmResponseProto.parseFrom(
              PBHelper.vintPrefixed(peer.getInputStream()));
      String error = resp.hasError() ? resp.getError() : "(unknown)";
      switch (resp.getStatus()) {
      case SUCCESS:
        DomainSocket sock = peer.getDomainSocket();
        byte buf[] = new byte[1];
        FileInputStream fis[] = new FileInputStream[1];
        if (sock.recvFileInputStreams(fis, buf, 0, buf.length) < 0) {
          throw new EOFException("got EOF while trying to transfer the " +
              "file descriptor for the shared memory segment.");
        }
        if (fis[0] == null) {
          throw new IOException("the datanode " + datanode + " failed to " +

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  }


  public DomainSocket createSocket(PathInfo info, int socketTimeout) {
    Preconditions.checkArgument(info.getPathState() != PathState.UNUSABLE);
    boolean success = false;
    DomainSocket sock = null;
    try {
      sock = DomainSocket.connect(info.getPath());
      sock.setAttribute(DomainSocket.RECEIVE_TIMEOUT, socketTimeout);
      success = true;
    } catch (IOException e) {
      LOG.warn("error creating DomainSocket", e);
      // fall through
    } finally {

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    sock.setAttribute(DomainSocket.RECEIVE_BUFFER_SIZE, size);
  }


  @Override
  public Peer accept() throws IOException, SocketTimeoutException {
    DomainSocket connSock = sock.accept();
    Peer peer = null;
    boolean success = false;
    try {
      peer = new DomainPeer(connSock);
      success = true;
      return peer;
    } finally {
      if (!success) {
        if (peer != null) peer.close();
        connSock.close();
      }
    }
  }

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    SlotId slotId = slot == null ? null : slot.getSlotId();
    new Sender(out).requestShortCircuitFds(block, token, slotId, 1);
    DataInputStream in = new DataInputStream(peer.getInputStream());
    BlockOpResponseProto resp = BlockOpResponseProto.parseFrom(
        PBHelper.vintPrefixed(in));
    DomainSocket sock = peer.getDomainSocket();
    switch (resp.getStatus()) {
    case SUCCESS:
      byte buf[] = new byte[1];
      FileInputStream fis[] = new FileInputStream[2];
      sock.recvFileInputStreams(fis, buf, 0, buf.length);
      ShortCircuitReplica replica = null;
      try {
        ExtendedBlockId key =
            new ExtendedBlockId(block.getBlockId(), block.getBlockPoolId());
        replica = new ShortCircuitReplica(key, fis[0], fis[1], cache,

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          LOG.trace("nextDomainPeer: reusing existing peer " + peer);
        }
        return new BlockReaderPeer(peer, true);
      }
    }
    DomainSocket sock = clientContext.getDomainSocketFactory().
        createSocket(pathInfo, conf.socketTimeout);
    if (sock == null) return null;
    return new BlockReaderPeer(new DomainPeer(sock), false);
  }

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  @Override
  public void requestShortCircuitShm(String clientName) throws IOException {
    NewShmInfo shmInfo = null;
    boolean success = false;
    DomainSocket sock = peer.getDomainSocket();
    try {
      if (sock == null) {
        sendShmErrorResponse(ERROR_INVALID, "Bad request from " +
            peer + ": must request a shared " +
            "memory segment over a UNIX domain socket.");

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