click_hdfs/contirb/libhdfspp/lib/common/util.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.
 */
#ifndef LIB_COMMON_UTIL_H_
#define LIB_COMMON_UTIL_H_

#include "libhdfs++/status.h"

#include <asio/error_code.hpp>

#include <google/protobuf/message_lite.h>
#include <google/protobuf/io/coded_stream.h>

namespace hdfs {

static inline Status ToStatus(const ::asio::error_code &ec) {
  if (ec) {
    return Status(ec.value(), ec.message().c_str());
  } else {
    return Status::OK();
  }
}

static inline int DelimitedPBMessageSize(
    const ::google::protobuf::MessageLite *msg) {
  size_t size = msg->ByteSize();
  return ::google::protobuf::io::CodedOutputStream::VarintSize32(size) + size;
}

static inline void ReadDelimitedPBMessage(
    ::google::protobuf::io::CodedInputStream *in,
    ::google::protobuf::MessageLite *msg) {
  uint32_t size = 0;
  in->ReadVarint32(&size);
  auto limit = in->PushLimit(size);
  msg->ParseFromCodedStream(in);
  in->PopLimit(limit);
}

std::string Base64Encode(const std::string &src);

}

#endif