initial code repo

[stor4nfv.git] / src / ceph / src / librbd / mirror / EnableRequest.h

diff --git a/src/ceph/src/librbd/mirror/EnableRequest.h b/src/ceph/src/librbd/mirror/EnableRequest.h
new file mode 100644 (file)
index 0000000..e214537
--- /dev/null
+++ b/src/ceph/src/librbd/mirror/EnableRequest.h
@@ -0,0 +1,100 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIRROR_ENABLE_REQUEST_H
+#define CEPH_LIBRBD_MIRROR_ENABLE_REQUEST_H
+
+#include "include/buffer.h"
+#include "cls/rbd/cls_rbd_types.h"
+#include <map>
+#include <string>
+
+class Context;
+class ContextWQ;
+
+namespace librados { class IoCtx; }
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace mirror {
+
+template <typename ImageCtxT = ImageCtx>
+class EnableRequest {
+public:
+  static EnableRequest *create(ImageCtxT *image_ctx, Context *on_finish) {
+    return create(image_ctx->md_ctx, image_ctx->id, "",
+                  image_ctx->op_work_queue, on_finish);
+  }
+  static EnableRequest *create(librados::IoCtx &io_ctx,
+                               const std::string &image_id,
+                               const std::string &non_primary_global_image_id,
+                               ContextWQ *op_work_queue, Context *on_finish) {
+    return new EnableRequest(io_ctx, image_id, non_primary_global_image_id,
+                             op_work_queue, on_finish);
+  }
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * GET_MIRROR_MODE  * * * * * * *
+   *    |                         *
+   *    v                         *
+   * GET_TAG_OWNER  * * * * * * * *
+   *    |                         *
+   *    v                         *
+   * GET_MIRROR_IMAGE * * * * * * *
+   *    |                         * (on error)
+   *    v                         *
+   * SET_MIRROR_IMAGE * * * * * * *
+   *    |                         *
+   *    v                         *
+   * NOTIFY_MIRRORING_WATCHER * * *
+   *    |                         *
+   *    v                         *
+   * <finish>   < * * * * * * * * *
+   *
+   * @endverbatim
+   */
+
+  EnableRequest(librados::IoCtx &io_ctx, const std::string &image_id,
+                const std::string &non_primary_global_image_id,
+                ContextWQ *op_work_queue, Context *on_finish);
+
+  librados::IoCtx &m_io_ctx;
+  std::string m_image_id;
+  std::string m_non_primary_global_image_id;
+  ContextWQ *m_op_work_queue;
+  Context *m_on_finish;
+
+  CephContext *m_cct = nullptr;
+  bool m_is_primary = false;
+  bufferlist m_out_bl;
+  cls::rbd::MirrorImage m_mirror_image;
+
+  void send_get_tag_owner();
+  Context *handle_get_tag_owner(int *result);
+
+  void send_get_mirror_image();
+  Context *handle_get_mirror_image(int *result);
+
+  void send_set_mirror_image();
+  Context *handle_set_mirror_image(int *result);
+
+  void send_notify_mirroring_watcher();
+  Context *handle_notify_mirroring_watcher(int *result);
+};
+
+} // namespace mirror
+} // namespace librbd
+
+extern template class librbd::mirror::EnableRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_MIRROR_ENABLE_REQUEST_H