X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Flibrbd%2Fobject_map%2FRequest.h;fp=src%2Fceph%2Fsrc%2Flibrbd%2Fobject_map%2FRequest.h;h=67f9bac11e5d70766831de833740a1db394f0a80;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/librbd/object_map/Request.h b/src/ceph/src/librbd/object_map/Request.h
new file mode 100644
index 0000000..67f9bac
--- /dev/null
+++ b/src/ceph/src/librbd/object_map/Request.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_OBJECT_MAP_REQUEST_H
+#define CEPH_LIBRBD_OBJECT_MAP_REQUEST_H
+
+#include "include/int_types.h"
+#include "librbd/AsyncRequest.h"
+
+class Context;
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace object_map {
+
+class Request : public AsyncRequest<> {
+public:
+  Request(ImageCtx &image_ctx, uint64_t snap_id, Context *on_finish)
+    : AsyncRequest(image_ctx, on_finish), m_snap_id(snap_id),
+      m_state(STATE_REQUEST)
+  {
+  }
+
+  void send() override = 0;
+
+protected:
+  const uint64_t m_snap_id;
+
+  bool should_complete(int r) override;
+  int filter_return_code(int r) const override {
+    // never propagate an error back to the caller
+    return 0;
+  }
+  virtual void finish_request() {
+  }
+
+private:
+  /**
+   * <start> ---> STATE_REQUEST ---> <finish>
+   *                   |                ^
+   *                   v                |
+   *            STATE_INVALIDATE -------/
+   */
+  enum State {
+    STATE_REQUEST,
+    STATE_INVALIDATE
+  };
+
+  State m_state;
+
+  bool invalidate();
+};
+
+} // namespace object_map
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_OBJECT_MAP_REQUEST_H