138 lines
3.7 KiB
PL/PgSQL
138 lines
3.7 KiB
PL/PgSQL
--
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-- This file is part of TALER
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-- Copyright (C) 2014--2022 Taler Systems SA
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--
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-- TALER is free software; you can redistribute it and/or modify it under the
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-- terms of the GNU General Public License as published by the Free Software
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-- Foundation; either version 3, or (at your option) any later version.
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--
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-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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-- A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License along with
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-- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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--
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CREATE FUNCTION create_table_known_coins(
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IN partition_suffix VARCHAR DEFAULT NULL
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)
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RETURNS VOID
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LANGUAGE plpgsql
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AS $$
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DECLARE
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table_name VARCHAR default 'known_coins';
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BEGIN
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PERFORM create_partitioned_table(
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'CREATE TABLE %I'
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'(known_coin_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
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',denominations_serial INT8 NOT NULL'
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',coin_pub BYTEA NOT NULL PRIMARY KEY CHECK (LENGTH(coin_pub)=32)'
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',age_commitment_hash BYTEA CHECK (LENGTH(age_commitment_hash)=32)'
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',denom_sig BYTEA NOT NULL'
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',remaining_val INT8 NOT NULL DEFAULT(0)'
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',remaining_frac INT4 NOT NULL DEFAULT(0)'
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') %s ;'
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,table_name
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,'PARTITION BY HASH (coin_pub)'
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,partition_suffix
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);
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PERFORM comment_partitioned_table(
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'information about coins and their signatures, so we do not have to store the signatures more than once if a coin is involved in multiple operations'
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,table_name
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,partition_suffix
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);
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PERFORM comment_partitioned_column(
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'Denomination of the coin, determines the value of the original coin and applicable fees for coin-specific operations.'
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,'denominations_serial'
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,table_name
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,partition_suffix
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);
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PERFORM comment_partitioned_column(
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'EdDSA public key of the coin'
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,'coin_pub'
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,table_name
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,partition_suffix
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);
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PERFORM comment_partitioned_column(
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'Value of the coin that remains to be spent'
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,'remaining_val'
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,table_name
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,partition_suffix
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);
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PERFORM comment_partitioned_column(
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'Optional hash of the age commitment for age restrictions as per DD 24 (active if denom_type has the respective bit set)'
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,'age_commitment_hash'
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,table_name
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,partition_suffix
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);
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PERFORM comment_partitioned_column(
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'This is the signature of the exchange that affirms that the coin is a valid coin. The specific signature type depends on denom_type of the denomination.'
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,'denom_sig'
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,table_name
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,partition_suffix
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);
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END
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$$;
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CREATE FUNCTION constrain_table_known_coins(
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IN partition_suffix VARCHAR
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)
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RETURNS void
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LANGUAGE plpgsql
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AS $$
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DECLARE
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table_name VARCHAR default 'known_coins';
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BEGIN
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table_name = concat_ws('_', table_name, partition_suffix);
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EXECUTE FORMAT (
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'ALTER TABLE ' || table_name ||
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' ADD CONSTRAINT ' || table_name || '_known_coin_id_key'
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' UNIQUE (known_coin_id)'
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);
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END
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$$;
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CREATE FUNCTION foreign_table_known_coins()
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RETURNS void
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LANGUAGE plpgsql
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AS $$
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DECLARE
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table_name VARCHAR default 'known_coins';
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BEGIN
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EXECUTE FORMAT (
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'ALTER TABLE ' || table_name ||
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' ADD CONSTRAINT ' || table_name || '_foreign_denominations'
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' FOREIGN KEY (denominations_serial) '
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' REFERENCES denominations (denominations_serial) ON DELETE CASCADE'
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);
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END
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$$;
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INSERT INTO exchange_tables
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(name
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,version
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,action
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,partitioned
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,by_range)
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VALUES
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('known_coins'
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,'exchange-0002'
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,'create'
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,TRUE
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,FALSE),
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('known_coins'
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,'exchange-0002'
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,'constrain'
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,TRUE
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,FALSE),
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('known_coins'
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,'exchange-0002'
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,'foreign'
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,TRUE
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,FALSE);
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