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/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2014 CERN (Switzerland)
*
* Author: Andreas-Joachim Peters <Andreas.Joachim.Peters@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.
*
*/
/**
* @file ErasureCodePluginIsa.cc
*
* @brief Erasure Code Plug-in class wrapping the INTEL ISA-L library
*
* The factory plug-in class allows to call individual encoding techniques.
* The INTEL ISA-L library provides two pre-defined encoding matrices
* (cauchy, reed_sol_van = default).
*/
// -----------------------------------------------------------------------------
#include "ceph_ver.h"
#include "include/buffer.h"
#include "ErasureCodePluginIsa.h"
#include "ErasureCodeIsa.h"
// -----------------------------------------------------------------------------
int ErasureCodePluginIsa::factory(const std::string &directory,
ceph::ErasureCodeProfile &profile,
ceph::ErasureCodeInterfaceRef *erasure_code,
std::ostream *ss)
{
ErasureCodeIsa *interface;
std::string t;
if (profile.find("technique") == profile.end())
profile["technique"] = "reed_sol_van";
t = profile.find("technique")->second;
if ((t == "reed_sol_van")) {
interface = new ErasureCodeIsaDefault(tcache,
ErasureCodeIsaDefault::kVandermonde);
} else {
if ((t == "cauchy")) {
interface = new ErasureCodeIsaDefault(tcache,
ErasureCodeIsaDefault::kCauchy);
} else {
*ss << "technique=" << t << " is not a valid coding technique. "
<< " Choose one of the following: "
<< "reed_sol_van,"
<< "cauchy" << std::endl;
return -ENOENT;
}
}
int r = interface->init(profile, ss);
if (r) {
delete interface;
return r;
}
*erasure_code = ceph::ErasureCodeInterfaceRef(interface);
return 0;
}
// -----------------------------------------------------------------------------
const char *__erasure_code_version()
{
return CEPH_GIT_NICE_VER;
}
// -----------------------------------------------------------------------------
int __erasure_code_init(char *plugin_name, char *directory)
{
auto& instance = ceph::ErasureCodePluginRegistry::instance();
return instance.add(plugin_name, new ErasureCodePluginIsa());
}
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