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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph distributed storage system
*
* Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
* Copyright (C) 2014 Red Hat <contact@redhat.com>
*
* Author: Loic Dachary <loic@dachary.org>
*
* 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 "ceph_ver.h"
#include "common/debug.h"
#include "ErasureCodeJerasure.h"
#include "ErasureCodePluginJerasure.h"
#include "jerasure_init.h"
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_osd
#undef dout_prefix
#define dout_prefix _prefix(_dout)
static std::ostream& _prefix(std::ostream* _dout)
{
return *_dout << "ErasureCodePluginJerasure: ";
}
int ErasureCodePluginJerasure::factory(const std::string& directory,
ceph::ErasureCodeProfile &profile,
ceph::ErasureCodeInterfaceRef *erasure_code,
std::ostream *ss) {
ErasureCodeJerasure *interface;
std::string t;
if (profile.find("technique") != profile.end())
t = profile.find("technique")->second;
if (t == "reed_sol_van") {
interface = new ErasureCodeJerasureReedSolomonVandermonde();
} else if (t == "reed_sol_r6_op") {
interface = new ErasureCodeJerasureReedSolomonRAID6();
} else if (t == "cauchy_orig") {
interface = new ErasureCodeJerasureCauchyOrig();
} else if (t == "cauchy_good") {
interface = new ErasureCodeJerasureCauchyGood();
} else if (t == "liberation") {
interface = new ErasureCodeJerasureLiberation();
} else if (t == "blaum_roth") {
interface = new ErasureCodeJerasureBlaumRoth();
} else if (t == "liber8tion") {
interface = new ErasureCodeJerasureLiber8tion();
} else {
*ss << "technique=" << t << " is not a valid coding technique. "
<< " Choose one of the following: "
<< "reed_sol_van, reed_sol_r6_op, cauchy_orig, "
<< "cauchy_good, liberation, blaum_roth, liber8tion";
return -ENOENT;
}
dout(20) << __func__ << ": " << profile << dendl;
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();
int w[] = { 4, 8, 16, 32 };
int r = jerasure_init(4, w);
if (r) {
return -r;
}
return instance.add(plugin_name, new ErasureCodePluginJerasure());
}
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