initial code repo

[stor4nfv.git] / src / ceph / src / librbd / journal / OpenRequest.h

diff --git a/src/ceph/src/librbd/journal/OpenRequest.h b/src/ceph/src/librbd/journal/OpenRequest.h
new file mode 100644 (file)
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+++ b/src/ceph/src/librbd/journal/OpenRequest.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 CEPH_LIBRBD_JOURNAL_OPEN_REQUEST_H
+#define CEPH_LIBRBD_JOURNAL_OPEN_REQUEST_H
+
+#include "include/int_types.h"
+#include "librbd/journal/TypeTraits.h"
+
+struct Context;
+struct Mutex;
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace journal {
+
+struct ImageClientMeta;
+struct TagData;
+
+template <typename ImageCtxT = ImageCtx>
+class OpenRequest {
+public:
+  typedef typename TypeTraits<ImageCtxT>::Journaler Journaler;
+
+  static OpenRequest* create(ImageCtxT *image_ctx, Journaler *journaler,
+                             Mutex *lock, journal::ImageClientMeta *client_meta,
+                             uint64_t *tag_tid, journal::TagData *tag_data,
+                             Context *on_finish) {
+    return new OpenRequest(image_ctx, journaler, lock, client_meta, tag_tid,
+                           tag_data, on_finish);
+  }
+
+  OpenRequest(ImageCtxT *image_ctx, Journaler *journaler, Mutex *lock,
+              journal::ImageClientMeta *client_meta, uint64_t *tag_tid,
+              journal::TagData *tag_data, Context *on_finish);
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   *  INIT
+   *    |
+   *    v
+   * GET_TAGS
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+
+
+  ImageCtxT *m_image_ctx;
+  Journaler *m_journaler;
+  Mutex *m_lock;
+  journal::ImageClientMeta *m_client_meta;
+  uint64_t *m_tag_tid;
+  journal::TagData *m_tag_data;
+  Context *m_on_finish;
+
+  uint64_t m_tag_class = 0;
+
+  void send_init();
+  void handle_init(int r);
+
+  void send_get_tags();
+  void handle_get_tags(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace journal
+} // namespace librbd
+
+extern template class librbd::journal::OpenRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_JOURNAL_OPEN_REQUEST_H