initial code repo

[stor4nfv.git] / src / ceph / src / tools / rbd_mirror / image_replayer / OpenLocalImageRequest.h

diff --git a/src/ceph/src/tools/rbd_mirror/image_replayer/OpenLocalImageRequest.h b/src/ceph/src/tools/rbd_mirror/image_replayer/OpenLocalImageRequest.h
new file mode 100644 (file)
index 0000000..58de545
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+++ b/src/ceph/src/tools/rbd_mirror/image_replayer/OpenLocalImageRequest.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef RBD_MIRROR_IMAGE_REPLAYER_OPEN_LOCAL_IMAGE_REQUEST_H
+#define RBD_MIRROR_IMAGE_REPLAYER_OPEN_LOCAL_IMAGE_REQUEST_H
+
+#include "include/int_types.h"
+#include "librbd/ImageCtx.h"
+#include <string>
+
+class Context;
+class ContextWQ;
+namespace librbd { class ImageCtx; }
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class OpenLocalImageRequest {
+public:
+  static OpenLocalImageRequest* create(librados::IoCtx &local_io_ctx,
+                                       ImageCtxT **local_image_ctx,
+                                       const std::string &local_image_id,
+                                       ContextWQ *work_queue,
+                                       Context *on_finish) {
+    return new OpenLocalImageRequest(local_io_ctx, local_image_ctx,
+                                     local_image_id, work_queue, on_finish);
+  }
+
+  OpenLocalImageRequest(librados::IoCtx &local_io_ctx,
+                        ImageCtxT **local_image_ctx,
+                        const std::string &local_image_id,
+                        ContextWQ *m_work_queue,
+                        Context *on_finish);
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * OPEN_IMAGE * * * * * * * *
+   *    |                     *
+   *    v                     *
+   * IS_PRIMARY * * * * * * * *
+   *    |                     *
+   *    v (skip if primary)   v
+   * LOCK_IMAGE * * * > CLOSE_IMAGE
+   *    |                     |
+   *    v                     |
+   * <finish> <---------------/
+   *
+   * @endverbatim
+   */
+  librados::IoCtx &m_local_io_ctx;
+  ImageCtxT **m_local_image_ctx;
+  std::string m_local_image_id;
+  ContextWQ *m_work_queue;
+  Context *m_on_finish;
+
+  bool m_primary = false;
+  int m_ret_val = 0;
+
+  void send_open_image();
+  void handle_open_image(int r);
+
+  void send_is_primary();
+  void handle_is_primary(int r);
+
+  void send_lock_image();
+  void handle_lock_image(int r);
+
+  void send_close_image(int r);
+  void handle_close_image(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+extern template class rbd::mirror::image_replayer::OpenLocalImageRequest<librbd::ImageCtx>;
+
+#endif // RBD_MIRROR_IMAGE_REPLAYER_OPEN_LOCAL_IMAGE_REQUEST_H