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Diffstat (limited to '')
-rw-r--r-- | src/erasure-code/isa/ErasureCodePluginIsa.cc | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/erasure-code/isa/ErasureCodePluginIsa.cc b/src/erasure-code/isa/ErasureCodePluginIsa.cc new file mode 100644 index 00000000..5eda591b --- /dev/null +++ b/src/erasure-code/isa/ErasureCodePluginIsa.cc @@ -0,0 +1,82 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * + * Author: Andreas-Joachim Peters <Andreas.Joachim.Peters@cern.ch> + * + * 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. + * + */ + + +/** + * @file ErasureCodePluginIsa.cc + * + * @brief Erasure Code Plug-in class wrapping the INTEL ISA-L library + * + * The factory plug-in class allows to call individual encoding techniques. + * The INTEL ISA-L library provides two pre-defined encoding matrices + * (cauchy, reed_sol_van = default). + */ + +// ----------------------------------------------------------------------------- +#include "ceph_ver.h" +#include "include/buffer.h" +#include "ErasureCodePluginIsa.h" +#include "ErasureCodeIsa.h" +// ----------------------------------------------------------------------------- + +int ErasureCodePluginIsa::factory(const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss) +{ + ErasureCodeIsa *interface; + std::string t; + if (profile.find("technique") == profile.end()) + profile["technique"] = "reed_sol_van"; + t = profile.find("technique")->second; + if ((t == "reed_sol_van")) { + interface = new ErasureCodeIsaDefault(tcache, + ErasureCodeIsaDefault::kVandermonde); + } else { + if ((t == "cauchy")) { + interface = new ErasureCodeIsaDefault(tcache, + ErasureCodeIsaDefault::kCauchy); + } else { + *ss << "technique=" << t << " is not a valid coding technique. " + << " Choose one of the following: " + << "reed_sol_van," + << "cauchy" << std::endl; + return -ENOENT; + } + } + + int r = interface->init(profile, ss); + if (r) { + delete interface; + return r; + } + *erasure_code = ErasureCodeInterfaceRef(interface); + return 0; +} + +// ----------------------------------------------------------------------------- + +const char *__erasure_code_version() +{ + return CEPH_GIT_NICE_VER; +} + +// ----------------------------------------------------------------------------- + +int __erasure_code_init(char *plugin_name, char *directory) +{ + ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); + + return instance.add(plugin_name, new ErasureCodePluginIsa()); +} |