projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
| 2 | // vim: ts=8 sw=2 smarttab | |
| 3 | /* | |
| 4 | * Ceph distributed storage system | |
| 5 | * | |
| 6 | * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com> | |
| 7 | * Copyright (C) 2014 Red Hat <contact@redhat.com> | |
| 8 | * | |
| 9 | * Author: Loic Dachary <loic@dachary.org> | |
| 10 | * | |
| 11 | * This library is free software; you can redistribute it and/or | |
| 12 | * modify it under the terms of the GNU Lesser General Public | |
| 13 | * License as published by the Free Software Foundation; either | |
| 14 | * version 2.1 of the License, or (at your option) any later version. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include "ceph_ver.h" | |
| 19 | #include "common/debug.h" | |
| 20 | #include "ErasureCodeJerasure.h" | |
| 21 | #include "ErasureCodePluginJerasure.h" | |
| 22 | #include "jerasure_init.h" | |
| 23 | ||
| 24 | #define dout_context g_ceph_context | |
| 25 | #define dout_subsys ceph_subsys_osd | |
| 26 | #undef dout_prefix | |
| 27 | #define dout_prefix _prefix(_dout) | |
| 28 | ||
| 29 | static ostream& _prefix(std::ostream* _dout) | |
| 30 | { | |
| 31 | return *_dout << "ErasureCodePluginJerasure: "; | |
| 32 | } | |
| 33 | ||
| 34 | int ErasureCodePluginJerasure::factory(const std::string& directory, | |
| 35 | ErasureCodeProfile &profile, | |
| 36 | ErasureCodeInterfaceRef *erasure_code, | |
| 31f18b77 | 37 | std::ostream *ss) { |
| 7c673cae FG |
38 | ErasureCodeJerasure *interface; |
| 39 | std::string t; | |
| 40 | if (profile.find("technique") != profile.end()) | |
| 41 | t = profile.find("technique")->second; | |
| 42 | if (t == "reed_sol_van") { | |
| 43 | interface = new ErasureCodeJerasureReedSolomonVandermonde(); | |
| 44 | } else if (t == "reed_sol_r6_op") { | |
| 45 | interface = new ErasureCodeJerasureReedSolomonRAID6(); | |
| 46 | } else if (t == "cauchy_orig") { | |
| 47 | interface = new ErasureCodeJerasureCauchyOrig(); | |
| 48 | } else if (t == "cauchy_good") { | |
| 49 | interface = new ErasureCodeJerasureCauchyGood(); | |
| 50 | } else if (t == "liberation") { | |
| 51 | interface = new ErasureCodeJerasureLiberation(); | |
| 52 | } else if (t == "blaum_roth") { | |
| 53 | interface = new ErasureCodeJerasureBlaumRoth(); | |
| 54 | } else if (t == "liber8tion") { | |
| 55 | interface = new ErasureCodeJerasureLiber8tion(); | |
| 56 | } else { | |
| 57 | derr << "technique=" << t << " is not a valid coding technique. " | |
| 58 | << " Choose one of the following: " | |
| 59 | << "reed_sol_van, reed_sol_r6_op, cauchy_orig, " | |
| 60 | << "cauchy_good, liberation, blaum_roth, liber8tion" | |
| 61 | << dendl; | |
| 62 | return -ENOENT; | |
| 63 | } | |
| 64 | dout(20) << __func__ << ": " << profile << dendl; | |
| 65 | int r = interface->init(profile, ss); | |
| 66 | if (r) { | |
| 67 | delete interface; | |
| 68 | return r; | |
| 69 | } | |
| 70 | *erasure_code = ErasureCodeInterfaceRef(interface); | |
| 71 | return 0; | |
| 72 | } | |
| 73 | ||
| 7c673cae FG |
74 | const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; } |
| 75 | ||
| 76 | int __erasure_code_init(char *plugin_name, char *directory) | |
| 77 | { | |
| 78 | ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); | |
| 79 | int w[] = { 4, 8, 16, 32 }; | |
| 80 | int r = jerasure_init(4, w); | |
| 81 | if (r) { | |
| 82 | return -r; | |
| 83 | } | |
| 84 | return instance.add(plugin_name, new ErasureCodePluginJerasure()); | |
| 85 | } |