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 - scalable distributed file system | |
| 5 | * | |
| 6 | * Copyright (C) 2014 FUJITSU LIMITED | |
| 7 | * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com> | |
| 8 | * Copyright (C) 2014 Red Hat <contact@redhat.com> | |
| 9 | * | |
| 10 | * Author: Takanori Nakao <nakao.takanori@jp.fujitsu.com> | |
| 11 | * Author: Takeshi Miyamae <miyamae.takeshi@jp.fujitsu.com> | |
| 12 | * Author: Loic Dachary <loic@dachary.org> | |
| 13 | * | |
| 14 | * This library is free software; you can redistribute it and/or | |
| 15 | * modify it under the terms of the GNU Lesser General Public | |
| 16 | * License as published by the Free Software Foundation; either | |
| 17 | * version 2.1 of the License, or (at your option) any later version. | |
| 18 | * | |
| 19 | */ | |
| 20 | ||
| 21 | #include "ceph_ver.h" | |
| 22 | #include "common/debug.h" | |
| 23 | #include "ErasureCodePluginShec.h" | |
| 24 | #include "ErasureCodeShecTableCache.h" | |
| 25 | #include "ErasureCodeShec.h" | |
| 26 | #include "jerasure_init.h" | |
| 27 | ||
| 28 | #define dout_context g_ceph_context | |
| 29 | ||
| 30 | #define dout_subsys ceph_subsys_osd | |
| 31 | #undef dout_prefix | |
| 32 | #define dout_prefix _prefix(_dout) | |
| 33 | ||
| 34 | static ostream& _prefix(std::ostream* _dout) | |
| 35 | { | |
| 36 | return *_dout << "ErasureCodePluginShec: "; | |
| 37 | } | |
| 38 | ||
| 39 | int ErasureCodePluginShec::factory(const std::string &directory, | |
| 40 | ErasureCodeProfile &profile, | |
| 41 | ErasureCodeInterfaceRef *erasure_code, | |
| 31f18b77 | 42 | std::ostream *ss) { |
| 7c673cae FG |
43 | ErasureCodeShec *interface; |
| 44 | ||
| 45 | if (profile.find("technique") == profile.end()) | |
| 46 | profile["technique"] = "multiple"; | |
| 47 | std::string t = profile.find("technique")->second; | |
| 48 | ||
| 49 | if (t == "single"){ | |
| 50 | interface = new ErasureCodeShecReedSolomonVandermonde(tcache, ErasureCodeShec::SINGLE); | |
| 51 | } else if (t == "multiple"){ | |
| 52 | interface = new ErasureCodeShecReedSolomonVandermonde(tcache, ErasureCodeShec::MULTIPLE); | |
| 53 | } else { | |
| 54 | *ss << "technique=" << t << " is not a valid coding technique. " | |
| 55 | << "Choose one of the following: " | |
| 56 | << "single, multiple "; | |
| 57 | return -ENOENT; | |
| 58 | } | |
| 59 | int r = interface->init(profile, ss); | |
| 60 | if (r) { | |
| 61 | delete interface; | |
| 62 | return r; | |
| 63 | } | |
| 64 | *erasure_code = ErasureCodeInterfaceRef(interface); | |
| 65 | ||
| 66 | dout(10) << "ErasureCodePluginShec: factory() completed" << dendl; | |
| 67 | ||
| 68 | return 0; | |
| 69 | } | |
| 70 | ||
| 71 | #ifndef BUILDING_FOR_EMBEDDED | |
| 72 | ||
| 73 | const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; } | |
| 74 | ||
| 75 | int __erasure_code_init(char *plugin_name, char *directory = (char *)"") | |
| 76 | { | |
| 77 | ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); | |
| 78 | int w[] = { 8, 16, 32 }; | |
| 79 | int r = jerasure_init(3, w); | |
| 80 | if (r) { | |
| 81 | return -r; | |
| 82 | } | |
| 83 | return instance.add(plugin_name, new ErasureCodePluginShec()); | |
| 84 | } | |
| 85 | ||
| 86 | #endif |