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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2014 FUJITSU LIMITED
* Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
* Copyright (C) 2014 Red Hat <contact@redhat.com>
*
* Author: Takanori Nakao <nakao.takanori@jp.fujitsu.com>
* Author: Takeshi Miyamae <miyamae.takeshi@jp.fujitsu.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 "ErasureCodePluginShec.h"
#include "ErasureCodeShecTableCache.h"
#include "ErasureCodeShec.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 << "ErasureCodePluginShec: ";
}
int ErasureCodePluginShec::factory(const std::string &directory,
ceph::ErasureCodeProfile &profile,
ceph::ErasureCodeInterfaceRef *erasure_code,
std::ostream *ss) {
ErasureCodeShec *interface;
if (profile.find("technique") == profile.end())
profile["technique"] = "multiple";
std::string t = profile.find("technique")->second;
if (t == "single"){
interface = new ErasureCodeShecReedSolomonVandermonde(tcache, ErasureCodeShec::SINGLE);
} else if (t == "multiple"){
interface = new ErasureCodeShecReedSolomonVandermonde(tcache, ErasureCodeShec::MULTIPLE);
} else {
*ss << "technique=" << t << " is not a valid coding technique. "
<< "Choose one of the following: "
<< "single, multiple ";
return -ENOENT;
}
int r = interface->init(profile, ss);
if (r) {
delete interface;
return r;
}
*erasure_code = ceph::ErasureCodeInterfaceRef(interface);
dout(10) << "ErasureCodePluginShec: factory() completed" << dendl;
return 0;
}
const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; }
int __erasure_code_init(char *plugin_name, char *directory = (char *)"")
{
auto& instance = ceph::ErasureCodePluginRegistry::instance();
int w[] = { 8, 16, 32 };
int r = jerasure_init(3, w);
if (r) {
return -r;
}
return instance.add(plugin_name, new ErasureCodePluginShec());
}
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