summaryrefslogtreecommitdiffstats
path: root/src/erasure-code/shec/ErasureCodePluginShec.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/erasure-code/shec/ErasureCodePluginShec.cc')
-rw-r--r--src/erasure-code/shec/ErasureCodePluginShec.cc82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/erasure-code/shec/ErasureCodePluginShec.cc b/src/erasure-code/shec/ErasureCodePluginShec.cc
new file mode 100644
index 00000000..b0ecf3f0
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodePluginShec.cc
@@ -0,0 +1,82 @@
+// -*- 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;
+}
+
+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());
+}