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283ac7fefe
The functions which prepare schema change mutations (such as `prepare_new_column_family_announcement`) would use internally generated timestamps for these mutations. When schema changes are managed by group 0 we want to ensure that timestamps of mutations applied through Raft are monotonic. We will generate these timestamps at call sites and pass them into the `prepare_` functions. This commit prepares the APIs.
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
/*
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*/
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/*
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* Copyright (C) 2017-present ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
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*/
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#pragma once
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#include "cql3/statements/schema_altering_statement.hh"
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#include <seastar/core/shared_ptr.hh>
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#include <optional>
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#include <memory>
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#include "schema_fwd.hh"
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namespace cql3 {
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class query_processor;
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class index_name;
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namespace statements {
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class drop_index_statement : public schema_altering_statement {
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sstring _index_name;
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// A "drop index" statement does not specify the base table's name, just an
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// index name. Nevertheless, the virtual column_family() method is supposed
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// to return a reasonable table name. If the index doesn't exist, we return
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// an empty name (this commonly happens with "if exists").
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mutable std::optional<sstring> _cf_name;
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bool _if_exists;
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cql_stats* _cql_stats = nullptr;
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public:
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drop_index_statement(::shared_ptr<index_name> index_name, bool if_exists);
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virtual const sstring& column_family() const override;
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virtual future<> check_access(query_processor& qp, const service::client_state& state) const override;
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virtual void validate(query_processor&, const service::client_state& state) const override;
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future<std::pair<::shared_ptr<cql_transport::event::schema_change>, std::vector<mutation>>> prepare_schema_mutations(query_processor& qp, api::timestamp_type) const override;
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virtual std::unique_ptr<prepared_statement> prepare(data_dictionary::database db, cql_stats& stats) override;
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private:
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schema_ptr lookup_indexed_table(query_processor& qp) const;
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schema_ptr make_drop_idex_schema(query_processor& qp) const;
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};
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}
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}
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