1 files changed, 87 insertions, 0 deletions
diff --git a/src/common/ceph_releases.h b/src/common/ceph_releases.h
new file mode 100644
index 000000000..96fba92fd
--- /dev/null
+++ b/src/common/ceph_releases.h
@@ -0,0 +1,87 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <cstdint>
+#include <iosfwd>
+#include <string_view>
+
+#include "common/ceph_strings.h"
+
+// the C++ version of CEPH_RELEASE_* defined by include/rados.h
+enum class ceph_release_t : std::uint8_t {
+  unknown = 0,
+  argonaut,
+  bobtail,
+  cuttlefish,
+  dumpling,
+  emperor,
+  firefly,
+  giant,
+  hammer,
+  infernalis,
+  jewel,
+  kraken,
+  luminous,
+  mimic,
+  nautilus,
+  octopus,
+  pacific,
+  max,
+};
+
+std::ostream& operator<<(std::ostream& os, const ceph_release_t r);
+
+inline bool operator!(ceph_release_t& r) {
+  return (r < ceph_release_t::unknown ||
+          r == ceph_release_t::unknown);
+}
+
+inline ceph_release_t& operator--(ceph_release_t& r) {
+  r = static_cast<ceph_release_t>(static_cast<uint8_t>(r) - 1);
+  return r;
+}
+
+inline ceph_release_t& operator++(ceph_release_t& r) {
+  r = static_cast<ceph_release_t>(static_cast<uint8_t>(r) + 1);
+  return r;
+}
+
+inline bool operator<(ceph_release_t lhs, ceph_release_t rhs) {
+  // we used to use -1 for invalid release
+  if (static_cast<int8_t>(lhs) < 0) {
+    return true;
+  } else if (static_cast<int8_t>(rhs) < 0) {
+    return false;
+  }
+  return static_cast<uint8_t>(lhs) < static_cast<uint8_t>(rhs);
+}
+
+inline bool operator>(ceph_release_t lhs, ceph_release_t rhs) {
+  // we used to use -1 for invalid release
+  if (static_cast<int8_t>(lhs) < 0) {
+    return false;
+  } else if (static_cast<int8_t>(rhs) < 0) {
+    return true;
+  }
+  return static_cast<uint8_t>(lhs) > static_cast<uint8_t>(rhs);
+}
+
+inline bool operator>=(ceph_release_t lhs, ceph_release_t rhs) {
+  return !(lhs < rhs);
+}
+
+bool can_upgrade_from(ceph_release_t from_release,
+		      std::string_view from_release_name,
+		      std::ostream& err);
+
+ceph_release_t ceph_release_from_name(std::string_view sv);
+ceph_release_t ceph_release();
+
+inline std::string_view to_string(ceph_release_t r) {
+  return ceph_release_name(static_cast<int>(r));
+}
+template<typename IntType> IntType to_integer(ceph_release_t r) {
+  return static_cast<IntType>(r);
+}