1 files changed, 28 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/instances/Types.h b/src/tools/rbd_mirror/instances/Types.h
new file mode 100644
index 000000000..8b0a68fc3
--- /dev/null
+++ b/src/tools/rbd_mirror/instances/Types.h
@@ -0,0 +1,28 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_RBD_MIRROR_INSTANCES_TYPES_H
+#define CEPH_RBD_MIRROR_INSTANCES_TYPES_H
+
+#include <string>
+#include <vector>
+
+namespace rbd {
+namespace mirror {
+namespace instances {
+
+struct Listener {
+  typedef std::vector<std::string> InstanceIds;
+
+  virtual ~Listener() {
+  }
+
+  virtual void handle_added(const InstanceIds& instance_ids) = 0;
+  virtual void handle_removed(const InstanceIds& instance_ids) = 0;
+};
+
+} // namespace instances
+} // namespace mirror
+} // namespace rbd
+
+#endif // CEPH_RBD_MIRROR_INSTANCES_TYPES_H