initial code repo

[stor4nfv.git] / src / ceph / src / erasure-code / jerasure / ErasureCodePluginJerasure.cc

diff --git a/src/ceph/src/erasure-code/jerasure/ErasureCodePluginJerasure.cc b/src/ceph/src/erasure-code/jerasure/ErasureCodePluginJerasure.cc
new file mode 100644 (file)
index 0000000..38f4038
--- /dev/null
+++ b/src/ceph/src/erasure-code/jerasure/ErasureCodePluginJerasure.cc
@@ -0,0 +1,89 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph distributed storage system
+ *
+ * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
+ * Copyright (C) 2014 Red Hat <contact@redhat.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 "ErasureCodeJerasure.h"
+#include "ErasureCodePluginJerasure.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 << "ErasureCodePluginJerasure: ";
+}
+
+int ErasureCodePluginJerasure::factory(const std::string& directory,
+                     ErasureCodeProfile &profile,
+                     ErasureCodeInterfaceRef *erasure_code,
+                     std::ostream *ss) {
+    ErasureCodeJerasure *interface;
+    std::string t;
+    if (profile.find("technique") != profile.end())
+      t = profile.find("technique")->second;
+    if (t == "reed_sol_van") {
+      interface = new ErasureCodeJerasureReedSolomonVandermonde();
+    } else if (t == "reed_sol_r6_op") {
+      interface = new ErasureCodeJerasureReedSolomonRAID6();
+    } else if (t == "cauchy_orig") {
+      interface = new ErasureCodeJerasureCauchyOrig();
+    } else if (t == "cauchy_good") {
+      interface = new ErasureCodeJerasureCauchyGood();
+    } else if (t == "liberation") {
+      interface = new ErasureCodeJerasureLiberation();
+    } else if (t == "blaum_roth") {
+      interface = new ErasureCodeJerasureBlaumRoth();
+    } else if (t == "liber8tion") {
+      interface = new ErasureCodeJerasureLiber8tion();
+    } else {
+      derr << "technique=" << t << " is not a valid coding technique. "
+          << " Choose one of the following: "
+          << "reed_sol_van, reed_sol_r6_op, cauchy_orig, "
+          << "cauchy_good, liberation, blaum_roth, liber8tion"
+          << dendl;
+      return -ENOENT;
+    }
+    dout(20) << __func__ << ": " << profile << dendl;
+    int r = interface->init(profile, ss);
+    if (r) {
+      delete interface;
+      return r;
+    }
+    *erasure_code = ErasureCodeInterfaceRef(interface);
+    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)
+{
+  ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
+  int w[] = { 4, 8, 16, 32 };
+  int r = jerasure_init(4, w);
+  if (r) {
+    return -r;
+  }
+  return instance.add(plugin_name, new ErasureCodePluginJerasure());
+}
+
+#endif
\ No newline at end of file