1 files changed, 107 insertions, 0 deletions
diff --git a/src/include/uuid.h b/src/include/uuid.h
new file mode 100644
index 000000000..f6ef9878d
--- /dev/null
+++ b/src/include/uuid.h
@@ -0,0 +1,107 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+#ifndef _CEPH_UUID_H
+#define _CEPH_UUID_H
+
+/*
+ * Thin C++ wrapper around libuuid.
+ */
+
+#include "encoding.h"
+#include "random.h"
+
+#include <ostream>
+#include <random>
+
+#include <boost/uuid/uuid.hpp>
+#include <boost/uuid/uuid_generators.hpp>
+#include <boost/uuid/uuid_io.hpp>
+
+#if FMT_VERSION >= 90000
+#include <fmt/ostream.h>
+#endif
+
+namespace ceph {
+  class Formatter;
+}
+
+struct uuid_d {
+  boost::uuids::uuid uuid;
+
+  uuid_d() {
+    boost::uuids::nil_generator gen;
+    uuid = gen();
+  }
+
+  bool is_zero() const {
+    return uuid.is_nil();
+  }
+
+  void generate_random() {
+    random_device_t rng;
+    boost::uuids::basic_random_generator gen(rng);
+    uuid = gen();
+  }
+  
+  bool parse(const char *s) {
+    try {
+      boost::uuids::string_generator gen;
+      uuid = gen(s);
+      return true;
+    } catch (std::runtime_error& e) {
+      return false;
+    }
+  }
+  void print(char *s) const {
+    memcpy(s, boost::uuids::to_string(uuid).c_str(), 37);
+  }
+
+ std::string to_string() const {
+    return boost::uuids::to_string(uuid);
+  }
+
+  const char *bytes() const {
+    return (const char*)uuid.data;
+  }
+
+  void encode(::ceph::buffer::list::contiguous_appender& p) const {
+    p.append(reinterpret_cast<const char *>(&uuid), sizeof(uuid));
+  }
+
+  void bound_encode(size_t& p) const {
+    p += sizeof(uuid);
+  }
+
+  void decode(::ceph::buffer::ptr::const_iterator& p) {
+    assert((p.get_end() - p.get_pos()) >= (int)sizeof(*this));
+    memcpy((char *)this, p.get_pos_add(sizeof(*this)), sizeof(*this));
+  }
+
+  void dump(ceph::Formatter *f) const;
+  static void generate_test_instances(std::list<uuid_d*>& o);
+};
+WRITE_CLASS_DENC_BOUNDED(uuid_d)
+
+inline std::ostream& operator<<(std::ostream& out, const uuid_d& u) {
+  char b[37];
+  u.print(b);
+  return out << b;
+}
+
+inline bool operator==(const uuid_d& l, const uuid_d& r) {
+  return l.uuid == r.uuid;
+}
+inline bool operator!=(const uuid_d& l, const uuid_d& r) {
+  return l.uuid != r.uuid;
+}
+inline bool operator<(const uuid_d& l, const uuid_d& r) {
+  return l.to_string() < r.to_string();
+}
+inline bool operator>(const uuid_d& l, const uuid_d& r) {
+  return l.to_string() > r.to_string();
+}
+
+#if FMT_VERSION >= 90000
+template <> struct fmt::formatter<uuid_d> : fmt::ostream_formatter {};
+#endif
+
+#endif