projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /* |
| 2 | * Ceph - scalable distributed file system | |
| 3 | * | |
| 4 | * Copyright (C) 2014 CERN (Switzerland) | |
| 5 | * | |
| 6 | * Author: Andreas-Joachim Peters <Andreas.Joachim.Peters@cern.ch> | |
| 7 | * | |
| 8 | * This library is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU Lesser General Public | |
| 10 | * License as published by the Free Software Foundation; either | |
| 11 | * version 2.1 of the License, or (at your option) any later version. | |
| 12 | * | |
| 13 | */ | |
| 14 | ||
| 15 | ||
| 16 | /** | |
| 17 | * @file ErasureCodePluginIsa.cc | |
| 18 | * | |
| 19 | * @brief Erasure Code Plug-in class wrapping the INTEL ISA-L library | |
| 20 | * | |
| 21 | * The factory plug-in class allows to call individual encoding techniques. | |
| 22 | * The INTEL ISA-L library provides two pre-defined encoding matrices | |
| 23 | * (cauchy, reed_sol_van = default). | |
| 24 | */ | |
| 25 | ||
| 26 | // ----------------------------------------------------------------------------- | |
| 27 | #include "ceph_ver.h" | |
| 31f18b77 | 28 | #include "include/buffer.h" |
| 7c673cae FG |
29 | #include "ErasureCodePluginIsa.h" |
| 30 | #include "ErasureCodeIsa.h" | |
| 31 | // ----------------------------------------------------------------------------- | |
| 32 | ||
| 33 | int ErasureCodePluginIsa::factory(const std::string &directory, | |
| 34 | ErasureCodeProfile &profile, | |
| 35 | ErasureCodeInterfaceRef *erasure_code, | |
| 31f18b77 | 36 | std::ostream *ss) |
| 7c673cae FG |
37 | { |
| 38 | ErasureCodeIsa *interface; | |
| 39 | std::string t; | |
| 40 | if (profile.find("technique") == profile.end()) | |
| 41 | profile["technique"] = "reed_sol_van"; | |
| 42 | t = profile.find("technique")->second; | |
| 43 | if ((t == "reed_sol_van")) { | |
| 44 | interface = new ErasureCodeIsaDefault(tcache, | |
| 45 | ErasureCodeIsaDefault::kVandermonde); | |
| 46 | } else { | |
| 47 | if ((t == "cauchy")) { | |
| 48 | interface = new ErasureCodeIsaDefault(tcache, | |
| 49 | ErasureCodeIsaDefault::kCauchy); | |
| 50 | } else { | |
| 51 | *ss << "technique=" << t << " is not a valid coding technique. " | |
| 52 | << " Choose one of the following: " | |
| 53 | << "reed_sol_van," | |
| 54 | << "cauchy" << std::endl; | |
| 55 | return -ENOENT; | |
| 56 | } | |
| 57 | } | |
| 58 | ||
| 59 | int r = interface->init(profile, ss); | |
| 60 | if (r) { | |
| 61 | delete interface; | |
| 62 | return r; | |
| 63 | } | |
| 64 | *erasure_code = ErasureCodeInterfaceRef(interface); | |
| 65 | return 0; | |
| 66 | } | |
| 67 | ||
| 68 | #ifndef BUILDING_FOR_EMBEDDED | |
| 69 | ||
| 70 | // ----------------------------------------------------------------------------- | |
| 71 | ||
| 72 | const char *__erasure_code_version() | |
| 73 | { | |
| 74 | return CEPH_GIT_NICE_VER; | |
| 75 | } | |
| 76 | ||
| 77 | // ----------------------------------------------------------------------------- | |
| 78 | ||
| 79 | int __erasure_code_init(char *plugin_name, char *directory) | |
| 80 | { | |
| 81 | ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); | |
| 82 | ||
| 83 | return instance.add(plugin_name, new ErasureCodePluginIsa()); | |
| 84 | } | |
| 85 | ||
| 31f18b77 | 86 | #endif |