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/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2015 CERN
*
* Author: Joaquim Rocha <joaquim.rocha@cern.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
*/
#include "cls/numops/cls_numops_client.h"
#include "include/encoding.h"
#include "include/rados/librados.hpp"
#include <errno.h>
#include <sstream>
namespace rados {
namespace cls {
namespace numops {
int add(librados::IoCtx *ioctx,
const std::string& oid,
const std::string& key,
double value_to_add)
{
bufferlist in, out;
encode(key, in);
std::stringstream stream;
stream << value_to_add;
encode(stream.str(), in);
return ioctx->exec(oid, "numops", "add", in, out);
}
int sub(librados::IoCtx *ioctx,
const std::string& oid,
const std::string& key,
double value_to_subtract)
{
return add(ioctx, oid, key, -value_to_subtract);
}
int mul(librados::IoCtx *ioctx,
const std::string& oid,
const std::string& key,
double value_to_multiply)
{
bufferlist in, out;
encode(key, in);
std::stringstream stream;
stream << value_to_multiply;
encode(stream.str(), in);
return ioctx->exec(oid, "numops", "mul", in, out);
}
int div(librados::IoCtx *ioctx,
const std::string& oid,
const std::string& key,
double value_to_divide)
{
if (value_to_divide == 0)
return -EINVAL;
return mul(ioctx, oid, key, 1 / value_to_divide);
}
} // namespace numops
} // namespace cls
} // namespace rados
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