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-rw-r--r--src/librbd/object_map/UpdateRequest.h101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/librbd/object_map/UpdateRequest.h b/src/librbd/object_map/UpdateRequest.h
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+++ b/src/librbd/object_map/UpdateRequest.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_UPDATE_REQUEST_H
+#define CEPH_LIBRBD_OBJECT_MAP_UPDATE_REQUEST_H
+
+#include "include/int_types.h"
+#include "librbd/object_map/Request.h"
+#include "common/bit_vector.hpp"
+#include "common/zipkin_trace.h"
+#include "librbd/Utils.h"
+#include <boost/optional.hpp>
+
+class Context;
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace object_map {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class UpdateRequest : public Request {
+public:
+ static UpdateRequest *create(ImageCtx &image_ctx,
+ ceph::BitVector<2> *object_map,
+ uint64_t snap_id, uint64_t start_object_no,
+ uint64_t end_object_no, uint8_t new_state,
+ const boost::optional<uint8_t> &current_state,
+ const ZTracer::Trace &parent_trace,
+ bool ignore_enoent, Context *on_finish) {
+ return new UpdateRequest(image_ctx, object_map, snap_id, start_object_no,
+ end_object_no, new_state, current_state,
+ parent_trace, ignore_enoent, on_finish);
+ }
+
+ UpdateRequest(ImageCtx &image_ctx, ceph::BitVector<2> *object_map,
+ uint64_t snap_id, uint64_t start_object_no,
+ uint64_t end_object_no, uint8_t new_state,
+ const boost::optional<uint8_t> &current_state,
+ const ZTracer::Trace &parent_trace, bool ignore_enoent,
+ Context *on_finish)
+ : Request(image_ctx, snap_id, on_finish), m_object_map(*object_map),
+ m_start_object_no(start_object_no), m_end_object_no(end_object_no),
+ m_update_start_object_no(start_object_no), m_new_state(new_state),
+ m_current_state(current_state),
+ m_trace(util::create_trace(image_ctx, "update object map", parent_trace)),
+ m_ignore_enoent(ignore_enoent)
+ {
+ m_trace.event("start");
+ }
+ virtual ~UpdateRequest() {
+ m_trace.event("finish");
+ }
+
+ void send() override;
+
+protected:
+ void finish_request() override;
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start>
+ * |
+ * |/------------------\
+ * v | (repeat in batches)
+ * UPDATE_OBJECT_MAP -----/
+ * |
+ * v
+ * <finish>
+ *
+ * @endverbatim
+ */
+
+ ceph::BitVector<2> &m_object_map;
+ uint64_t m_start_object_no;
+ uint64_t m_end_object_no;
+ uint64_t m_update_start_object_no;
+ uint64_t m_update_end_object_no = 0;
+ uint8_t m_new_state;
+ boost::optional<uint8_t> m_current_state;
+ ZTracer::Trace m_trace;
+ bool m_ignore_enoent;
+
+ int m_ret_val = 0;
+
+ void update_object_map();
+ void handle_update_object_map(int r);
+
+ void update_in_memory_object_map();
+
+};
+
+} // namespace object_map
+} // namespace librbd
+
+extern template class librbd::object_map::UpdateRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_OBJECT_MAP_UPDATE_REQUEST_H