src/kudu/rpc/blocking_ops.h

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
#pragma once

namespace google {
namespace protobuf {
class MessageLite;
} // namespace protobuf
} // namespace google

namespace kudu {

class faststring;
class MonoTime;
class Slice;
class Socket;
class Status;

namespace rpc {

// Returns OK if socket is in blocking mode. Otherwise, returns an error.
Status CheckInBlockingMode(const Socket* sock);

// Encode and send a message over a socket.
// header: Request or Response header protobuf.
// msg: Protobuf message to send. This message must be fully initialized.
// deadline: Latest time allowed for receive to complete before timeout.
Status SendFramedMessageBlocking(Socket* sock, const google::protobuf::MessageLite& header,
    const google::protobuf::MessageLite& msg, const MonoTime& deadline);

// Receive a full message frame from the server.
// recv_buf: buffer to use for reading the data from the socket.
// header: Request or Response header protobuf.
// param_buf: Slice into recv_buf containing unparsed RPC param protobuf data.
// deadline: Latest time allowed for receive to complete before timeout.
Status ReceiveFramedMessageBlocking(Socket* sock, faststring* recv_buf,
    google::protobuf::MessageLite* header, Slice* param_buf, const MonoTime& deadline);

} // namespace rpc
} // namespace kudu