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https://github.com/scylladb/scylladb.git
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467d466f7e
Previously, the tablet information was sent to the drivers in two pieces within the custom_payload. We had information about the replicas under the `tablet_replicas` key and token range information under `token_range`. These names were quite generic and might have caused problems for other custom_payload users. Additionally, dividing the information into two pieces raised the question of what to do if one key is present while the other is missing. This commit changes the serialization mechanism to pack all information under one specific name, `tablets-routing-v1`. From: Sylwia Szunejko <sylwia.szunejko@scylladb.com> Closes scylladb/scylladb#16148
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* Copyright (C) 2023-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "types/types.hh"
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#include "types/tuple.hh"
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#include "types/list.hh"
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#include "timestamp.hh"
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#include "locator/tablets.hh"
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#include "schema/schema_fwd.hh"
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#include "mutation/mutation.hh"
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#include "mutation/canonical_mutation.hh"
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#include "replica/database_fwd.hh"
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#include <seastar/core/future.hh>
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#include <vector>
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namespace cql3 {
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class query_processor;
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}
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namespace replica {
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data_type get_replica_set_type();
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data_type get_tablet_info_type();
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schema_ptr make_tablets_schema();
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std::vector<data_value> replicas_to_data_value(const locator::tablet_replica_set& replicas);
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/// Converts information in tablet_map to mutations of system.tablets.
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///
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/// The mutations will delete any older tablet information for the same table.
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/// The provided timestamp should be strictly monotonically increasing
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/// between calls for the overriding to work correctly.
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future<mutation> tablet_map_to_mutation(const locator::tablet_map&,
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table_id,
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const sstring& keyspace_name,
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const sstring& table_name,
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api::timestamp_type);
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mutation make_drop_tablet_map_mutation(const sstring& keyspace_name, table_id, api::timestamp_type);
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/// Stores a given tablet_metadata in system.tablets.
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///
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/// Overrides tablet maps for tables present in the given tablet metadata.
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/// Does not delete tablet maps for tables which are absent in the given tablet metadata.
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/// The provided timestamp should be strictly monotonically increasing
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/// between calls for tablet map overriding to work correctly.
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/// The timestamp must be greater than api::min_timestamp.
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future<> save_tablet_metadata(replica::database&, const locator::tablet_metadata&, api::timestamp_type);
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/// Reads tablet metadata from system.tablets.
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future<locator::tablet_metadata> read_tablet_metadata(cql3::query_processor&);
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/// Reads tablet metadata from system.tablets in the form of mutations.
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future<std::vector<canonical_mutation>> read_tablet_mutations(seastar::sharded<database>&);
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} // namespace replica
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