1 files changed, 79 insertions, 0 deletions
diff --git a/src/crimson/osd/state.h b/src/crimson/osd/state.h
new file mode 100644
index 000000000..ba48cd36f
--- /dev/null
+++ b/src/crimson/osd/state.h
@@ -0,0 +1,79 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <string_view>
+#include <ostream>
+
+class OSDMap;
+
+class OSDState {
+
+  enum class State {
+    INITIALIZING,
+    PREBOOT,
+    BOOTING,
+    ACTIVE,
+    PRESTOP,
+    STOPPING,
+    WAITING_FOR_HEALTHY,
+  };
+
+  State state = State::INITIALIZING;
+
+public:
+  bool is_initializing() const {
+    return state == State::INITIALIZING;
+  }
+  bool is_preboot() const {
+    return state == State::PREBOOT;
+  }
+  bool is_booting() const {
+    return state == State::BOOTING;
+  }
+  bool is_active() const {
+    return state == State::ACTIVE;
+  }
+  bool is_prestop() const {
+    return state == State::PRESTOP;
+  }
+  bool is_stopping() const {
+    return state == State::STOPPING;
+  }
+  bool is_waiting_for_healthy() const {
+    return state == State::WAITING_FOR_HEALTHY;
+  }
+  void set_preboot() {
+    state = State::PREBOOT;
+  }
+  void set_booting() {
+    state = State::BOOTING;
+  }
+  void set_active() {
+    state = State::ACTIVE;
+  }
+  void set_prestop() {
+    state = State::PRESTOP;
+  }
+  void set_stopping() {
+    state = State::STOPPING;
+  }
+  std::string_view to_string() const {
+    switch (state) {
+    case State::INITIALIZING: return "initializing";
+    case State::PREBOOT: return "preboot";
+    case State::BOOTING: return "booting";
+    case State::ACTIVE: return "active";
+    case State::PRESTOP: return "prestop";
+    case State::STOPPING: return "stopping";
+    case State::WAITING_FOR_HEALTHY: return "waiting_for_healthy";
+    default: return "???";
+    }
+  }
+};
+
+inline std::ostream&
+operator<<(std::ostream& os, const OSDState& s) {
+  return os << s.to_string();
+}