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f64d8ecb77
Aligned the copyright notice to match the format used in other files. Updated Copyright (c) 2022-2024 to Copyright (c) 2024 to ensure consistency.
42 lines
1.9 KiB
C++
42 lines
1.9 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of clio: https://github.com/XRPLF/clio
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Copyright (c) 2024, the clio developers.
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Permission to use, copy, modify, and distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#pragma once
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#include "migration/cassandra/CassandraMigrationTestBackend.hpp"
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#include "util/newconfig/ObjectView.hpp"
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#include <memory>
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/**
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* @brief Example migrator for the ledgers table. In this example, we show how to migrate the data from table without
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* full table scan. We create an index table called "ledger_example" which maintains the map of ledger
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* sequence to account hash. Because ledger sequence is the partition key of ledgers table, we can just fetch the data
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* via ledger sequence without full table scan.
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*/
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struct ExampleLedgerMigrator {
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static constexpr char const* kNAME = "ExampleLedgerMigrator";
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static constexpr char const* kDESCRIPTION = "The migrator for ledgers table";
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using Backend = CassandraMigrationTestBackend;
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static void
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runMigration(std::shared_ptr<Backend> const& backend, util::config::ObjectView const& config);
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};
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