exchange/src/exchangedb/0002-purse_decision.sql

--
-- This file is part of TALER
-- Copyright (C) 2014--2022 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
--


CREATE FUNCTION create_table_purse_decision(
  IN shard_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'purse_decision';
BEGIN
  PERFORM create_partitioned_table(
    'CREATE TABLE %I '
      '(purse_decision_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
      ',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
      ',action_timestamp INT8 NOT NULL'
      ',refunded BOOL NOT NULL'
      ',PRIMARY KEY (purse_pub)'
    ') %s ;'
    ,table_name
    ,'PARTITION BY HASH (purse_pub)'
    ,shard_suffix
  );
  PERFORM comment_partitioned_table(
     'Purses that were decided upon (refund or merge)'
    ,table_name
    ,shard_suffix
  );
  PERFORM comment_partitioned_column(
     'Public key of the purse'
    ,'purse_pub'
    ,table_name
    ,shard_suffix
  );
END
$$;

CREATE FUNCTION constrain_table_purse_decision(
  IN partition_suffix VARCHAR
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'purse_decision';
BEGIN
  table_name = concat_ws('_', table_name, shard_suffix);
  EXECUTE FORMAT (
    'ALTER TABLE ' || table_name ||
    ' ADD CONSTRAINT ' || table_name || '_purse_action_serial_id_key'
    ' UNIQUE (purse_decision_serial_id) '
  );
END
$$;


INSERT INTO exchange_tables
    (name
    ,version
    ,action
    ,partitioned
    ,by_range)
  VALUES
    ('purse_decision'
    ,'exchange-0002'
    ,'create'
    ,TRUE
    ,FALSE),
    ('purse_decision'
    ,'exchange-0002'
    ,'constrain'
    ,TRUE
    ,FALSE);