initial code repo

[stor4nfv.git] / src / ceph / src / erasure-code / shec / ErasureCodePluginShec.cc

diff --git a/src/ceph/src/erasure-code/shec/ErasureCodePluginShec.cc b/src/ceph/src/erasure-code/shec/ErasureCodePluginShec.cc
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+++ b/src/ceph/src/erasure-code/shec/ErasureCodePluginShec.cc
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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 ostream& _prefix(std::ostream* _dout)
+{
+  return *_dout << "ErasureCodePluginShec: ";
+}
+
+int ErasureCodePluginShec::factory(const std::string &directory,
+                     ErasureCodeProfile &profile,
+                     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 = ErasureCodeInterfaceRef(interface);
+
+    dout(10) << "ErasureCodePluginShec: factory() completed" << dendl;
+
+    return 0;
+}
+
+#ifndef BUILDING_FOR_EMBEDDED
+
+const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; }
+
+int __erasure_code_init(char *plugin_name, char *directory = (char *)"")
+{
+  ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
+  int w[] = { 8, 16, 32 };
+  int r = jerasure_init(3, w);
+  if (r) {
+    return -r;
+  }
+  return instance.add(plugin_name, new ErasureCodePluginShec());
+}
+
+#endif
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