96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
#ifndef THIN_DEVICE_CHECKER_H
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#define THIN_DEVICE_CHECKER_H
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#include "base/run.h"
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#include "persistent-data/data-structures/btree.h"
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//----------------------------------------------------------------
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namespace thin_provisioning {
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namespace device_tree_detail {
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struct device_details_disk {
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le64 mapped_blocks_;
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le64 transaction_id_; /* when created */
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le32 creation_time_;
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le32 snapshotted_time_;
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} __attribute__ ((packed));
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struct device_details {
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device_details();
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device_details(uint64_t tid, uint32_t time);
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uint64_t mapped_blocks_;
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uint64_t transaction_id_; /* when created */
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uint32_t creation_time_;
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uint32_t snapshotted_time_;
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};
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inline bool operator==(device_details const& lhs, device_details const& rhs) {
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return false; // device_details are not compariable
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}
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inline bool operator!=(device_details const& lhs, device_details const& rhs) {
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return !(lhs == rhs);
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}
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struct device_details_traits {
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typedef device_details_disk disk_type;
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typedef device_details value_type;
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typedef persistent_data::no_op_ref_counter<device_details> ref_counter;
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static void unpack(device_details_disk const &disk, device_details &value);
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static void pack(device_details const &value, device_details_disk &disk);
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};
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class damage_visitor;
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struct damage {
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virtual ~damage() {}
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virtual void visit(damage_visitor &v) const = 0;
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};
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struct missing_devices : public damage {
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missing_devices(std::string const &desc, run<uint64_t> const &keys);
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virtual void visit(damage_visitor &v) const;
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std::string desc_;
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run<uint64_t> keys_;
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};
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class damage_visitor {
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public:
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typedef std::shared_ptr<damage_visitor> ptr;
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virtual ~damage_visitor() {}
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void visit(damage const &d) {
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d.visit(*this);
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}
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virtual void visit(missing_devices const &d) = 0;
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};
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// FIXME: need to add some more damage types for bad leaf data
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class device_visitor {
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public:
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virtual ~device_visitor() {}
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virtual void visit(block_address dev_id, device_details const &v) = 0;
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};
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};
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typedef persistent_data::btree<1, device_tree_detail::device_details_traits> device_tree;
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void walk_device_tree(device_tree const &tree,
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device_tree_detail::device_visitor &dev_v,
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device_tree_detail::damage_visitor &dv,
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bool ignore_non_fatal = false);
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void check_device_tree(device_tree const &tree,
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device_tree_detail::damage_visitor &visitor,
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bool ignore_non_fatal = false);
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}
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//----------------------------------------------------------------
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#endif
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