1 files changed, 92 insertions, 0 deletions
diff --git a/src/common/entity_name.h b/src/common/entity_name.h
new file mode 100644
index 000000000..c88ebcbba
--- /dev/null
+++ b/src/common/entity_name.h
@@ -0,0 +1,92 @@
+// -*- 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) 2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef CEPH_COMMON_ENTITY_NAME_H
+#define CEPH_COMMON_ENTITY_NAME_H
+
+#include <string_view>
+
+#include <ifaddrs.h>
+
+#include "msg/msg_types.h"
+
+/* Represents a Ceph entity name.
+ *
+ * For example, mds.0 is the name of the first metadata server.
+ * client
+ */
+struct EntityName
+{
+  void encode(ceph::buffer::list& bl) const {
+    using ceph::encode;
+    encode(type, bl);
+    encode(id, bl);
+  }
+  void decode(ceph::buffer::list::const_iterator& bl) {
+    using ceph::decode;
+    uint32_t type_;
+    std::string id_;
+    decode(type_, bl);
+    decode(id_, bl);
+    set(type_, id_);
+  }
+
+  const std::string& to_str() const;
+  const char *to_cstr() const;
+  bool from_str(std::string_view s);
+  void set(uint32_t type_, std::string_view id_);
+  int set(std::string_view type_, std::string_view id_);
+  void set_type(uint32_t type_);
+  int set_type(std::string_view type);
+  void set_id(std::string_view id_);
+  void set_name(entity_name_t n);
+
+  const char* get_type_str() const;
+
+  uint32_t get_type() const { return type; }
+  bool is_osd() const { return get_type() == CEPH_ENTITY_TYPE_OSD; }
+  bool is_mgr() const { return get_type() == CEPH_ENTITY_TYPE_MGR; }
+  bool is_mds() const { return get_type() == CEPH_ENTITY_TYPE_MDS; }
+  bool is_client() const { return get_type() == CEPH_ENTITY_TYPE_CLIENT; }
+  bool is_mon() const { return get_type() == CEPH_ENTITY_TYPE_MON; }
+
+  std::string_view get_type_name() const;
+  const std::string &get_id() const;
+  bool has_default_id() const;
+
+  static std::string get_valid_types_as_str();
+  static uint32_t str_to_ceph_entity_type(std::string_view);
+
+  friend bool operator<(const EntityName& a, const EntityName& b);
+  friend std::ostream& operator<<(std::ostream& out, const EntityName& n);
+
+  bool operator==(const EntityName& rhs) const noexcept {
+    return type == rhs.type && id == rhs.id;
+  }
+
+private:
+  struct str_to_entity_type_t {
+    uint32_t type;
+    const char *str;
+  };
+  static const std::array<str_to_entity_type_t, 6> STR_TO_ENTITY_TYPE;
+
+  uint32_t type = 0;
+  std::string id;
+  std::string type_id;
+};
+
+WRITE_CLASS_ENCODER(EntityName)
+
+#endif