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b2e2ad6e04
Send journal lsn to replica and compare the lsn value against number of records received in replica side Signed-off-by: kostas <kostas@dragonflydb.io> Co-authored-by: adi_holden <adi@dragonflydb.io>
46 lines
1,011 B
C++
46 lines
1,011 B
C++
// Copyright 2022, DragonflyDB authors. All rights reserved.
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// See LICENSE for licensing terms.
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//
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#pragma once
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#include "server/journal/types.h"
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#include "util/proactor_pool.h"
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namespace dfly {
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class Transaction;
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namespace journal {
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class Journal {
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public:
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using Span = absl::Span<const std::string_view>;
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Journal();
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void StartInThread();
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std::error_code Close();
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//******* The following functions must be called in the context of the owning shard *********//
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uint32_t RegisterOnChange(ChangeCallback cb);
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void UnregisterOnChange(uint32_t id);
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bool HasRegisteredCallbacks() const;
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bool IsLSNInBuffer(LSN lsn) const;
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std::string_view GetEntry(LSN lsn) const;
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LSN GetLsn() const;
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void RecordEntry(TxId txid, Op opcode, DbIndex dbid, unsigned shard_cnt,
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std::optional<SlotId> slot, Entry::Payload payload, bool await);
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private:
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mutable util::fb2::Mutex state_mu_;
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time_t last_lsn_joural_time_ = 0;
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};
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} // namespace journal
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} // namespace dfly
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