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72cec22932
these unused includes were identified by clangd. see https://clangd.llvm.org/guides/include-cleaner#unused-include-warning for more details on the "Unused include" warning. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com> Closes scylladb/scylladb#16993
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
#pragma once
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#include "repair/decorated_key_with_hash.hh"
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#include "readers/evictable.hh"
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#include "dht/sharder.hh"
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#include "reader_permit.hh"
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#include "utils/phased_barrier.hh"
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#include "readers/mutation_fragment_v1_stream.hh"
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class repair_reader {
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public:
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enum class read_strategy {
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local,
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multishard_split,
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multishard_filter
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};
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friend std::ostream& operator<<(std::ostream& out, read_strategy s) {
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switch (s) {
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case read_strategy::local:
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return out << "local";
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case read_strategy::multishard_split:
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return out << "multishard_split";
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case read_strategy::multishard_filter:
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return out << "multishard_filter";
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};
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return out << "unknown";
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}
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private:
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schema_ptr _schema;
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reader_permit _permit;
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dht::partition_range _range;
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// Used to find the range that repair master will work on
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dht::selective_token_range_sharder _sharder;
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// Seed for the repair row hashing
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uint64_t _seed;
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// Pin the table while the reader is alive.
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// Only needed for local readers, the multishard reader takes care
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// of pinning tables on used shards.
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std::optional<utils::phased_barrier::operation> _local_read_op;
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std::optional<evictable_reader_handle_v2> _reader_handle;
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// Fragment stream of either local or multishard reader for the range
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mutation_fragment_v1_stream _reader;
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// Current partition read from disk
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lw_shared_ptr<const decorated_key_with_hash> _current_dk;
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uint64_t _reads_issued = 0;
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uint64_t _reads_finished = 0;
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flat_mutation_reader_v2 make_reader(
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seastar::sharded<replica::database>& db,
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replica::column_family& cf,
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read_strategy strategy,
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const dht::sharder& remote_sharder,
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unsigned remote_shard,
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gc_clock::time_point compaction_time);
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public:
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repair_reader(
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seastar::sharded<replica::database>& db,
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replica::column_family& cf,
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schema_ptr s,
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reader_permit permit,
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dht::token_range range,
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const dht::sharder& remote_sharder,
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unsigned remote_shard,
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uint64_t seed,
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read_strategy strategy,
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gc_clock::time_point compaction_time);
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future<mutation_fragment_opt>
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read_mutation_fragment();
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future<> on_end_of_stream() noexcept;
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future<> close() noexcept;
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lw_shared_ptr<const decorated_key_with_hash>& get_current_dk() {
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return _current_dk;
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}
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void set_current_dk(const dht::decorated_key& key);
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void clear_current_dk();
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void check_current_dk();
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void pause();
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};
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