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--
-- 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_recoup(
IN partition_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'recoup';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I'
'(recoup_uuid BIGINT GENERATED BY DEFAULT AS IDENTITY'
',coin_pub BYTEA NOT NULL CHECK (LENGTH(coin_pub)=32)'
',coin_sig BYTEA NOT NULL CHECK(LENGTH(coin_sig)=64)'
',coin_blind BYTEA NOT NULL CHECK(LENGTH(coin_blind)=32)'
',amount taler_amount NOT NULL'
',recoup_timestamp INT8 NOT NULL'
',reserve_out_serial_id INT8 NOT NULL'
') %s ;'
,table_name
,'PARTITION BY HASH (coin_pub);'
,partition_suffix
);
PERFORM comment_partitioned_table(
'Information about recoups that were executed between a coin and a reserve. In this type of recoup, the amount is credited back to the reserve from which the coin originated.'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Coin that is being debited in the recoup. Do not CASCADE ON DROP on the coin_pub, as we may keep the coin alive!'
,'coin_pub'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Identifies the h_blind_ev of the recouped coin and provides the link to the credited reserve.'
,'reserve_out_serial_id'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Signature by the coin affirming the recoup, of type TALER_SIGNATURE_WALLET_COIN_RECOUP'
,'coin_sig'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Denomination blinding key used when creating the blinded coin from the planchet. Secret revealed during the recoup to provide the linkage between the coin and the withdraw operation.'
,'coin_blind'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_recoup(
IN partition_suffix VARCHAR
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'recoup';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_by_coin_pub_index '
'ON ' || table_name || ' '
'(coin_pub);'
);
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_recoup_uuid_key'
' UNIQUE (recoup_uuid) '
);
END
$$;
CREATE FUNCTION foreign_table_recoup()
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'recoup';
BEGIN
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_foreign_reserves_out'
' FOREIGN KEY (reserve_out_serial_id) '
' REFERENCES reserves_out (reserve_out_serial_id) ON DELETE CASCADE'
',ADD CONSTRAINT ' || table_name || '_foreign_coin_pub'
' FOREIGN KEY (coin_pub) '
' REFERENCES known_coins (coin_pub)'
);
END
$$;
CREATE FUNCTION create_table_recoup_by_reserve(
IN partition_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'recoup_by_reserve';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I'
'(reserve_out_serial_id INT8 NOT NULL' -- REFERENCES reserves (reserve_out_serial_id) ON DELETE CASCADE
',coin_pub BYTEA CHECK (LENGTH(coin_pub)=32)' -- REFERENCES known_coins (coin_pub)
') %s ;'
,table_name
,'PARTITION BY HASH (reserve_out_serial_id)'
,partition_suffix
);
PERFORM comment_partitioned_table(
'Information in this table is strictly redundant with that of recoup, but saved by a different primary key for fast lookups by reserve_out_serial_id.'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_recoup_by_reserve(
IN partition_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'recoup_by_reserve';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_main_index '
'ON ' || table_name || ' '
'(reserve_out_serial_id);'
);
END
$$;
CREATE FUNCTION recoup_insert_trigger()
RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
INSERT INTO exchange.recoup_by_reserve
(reserve_out_serial_id
,coin_pub)
VALUES
(NEW.reserve_out_serial_id
,NEW.coin_pub);
RETURN NEW;
END $$;
COMMENT ON FUNCTION recoup_insert_trigger()
IS 'Replicate recoup inserts into recoup_by_reserve table.';
CREATE FUNCTION recoup_delete_trigger()
RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
DELETE FROM exchange.recoup_by_reserve
WHERE reserve_out_serial_id = OLD.reserve_out_serial_id
AND coin_pub = OLD.coin_pub;
RETURN OLD;
END $$;
COMMENT ON FUNCTION recoup_delete_trigger()
IS 'Replicate recoup deletions into recoup_by_reserve table.';
CREATE FUNCTION master_table_recoup()
RETURNS VOID
LANGUAGE plpgsql
AS $$
BEGIN
CREATE TRIGGER recoup_on_insert
AFTER INSERT
ON recoup
FOR EACH ROW EXECUTE FUNCTION recoup_insert_trigger();
CREATE TRIGGER recoup_on_delete
AFTER DELETE
ON recoup
FOR EACH ROW EXECUTE FUNCTION recoup_delete_trigger();
END
$$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('recoup'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('recoup'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE),
('recoup'
,'exchange-0002'
,'foreign'
,TRUE
,FALSE),
('recoup_by_reserve'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('recoup_by_reserve'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE),
('recoup'
,'exchange-0002'
,'master'
,TRUE
,FALSE);
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