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--
-- This file is part of TALER
-- Copyright (C) 2014--2023 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_history_requests(
IN shard_suffix TEXT DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'history_requests';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I '
'(history_request_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
',reserve_pub BYTEA NOT NULL CHECK (LENGTH(reserve_pub)=32)'
',request_timestamp INT8 NOT NULL'
',reserve_sig BYTEA NOT NULL CHECK (LENGTH(reserve_sig)=64)'
',history_fee taler_amount NOT NULL'
',PRIMARY KEY (reserve_pub,request_timestamp)'
') %s ;'
,table_name
,'PARTITION BY HASH (reserve_pub)'
,shard_suffix
);
PERFORM comment_partitioned_table(
'Paid history requests issued by a client against a reserve'
,table_name
,shard_suffix
);
PERFORM comment_partitioned_column(
'When was the history request made'
,'request_timestamp'
,table_name
,shard_suffix
);
PERFORM comment_partitioned_column(
'Signature approving payment for the history request'
,'reserve_sig'
,table_name
,shard_suffix
);
PERFORM comment_partitioned_column(
'History fee approved by the signature'
,'history_fee'
,table_name
,shard_suffix
);
END $$;
CREATE FUNCTION constrain_table_history_requests(
IN partition_suffix TEXT
)
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
partition_name TEXT;
BEGIN
partition_name = concat_ws('_', 'history_requests', partition_suffix);
EXECUTE FORMAT (
'ALTER TABLE ' || partition_name ||
' ADD CONSTRAINT ' || partition_name || '_serial_id'
' UNIQUE (history_request_serial_id)'
);
END
$$;
CREATE FUNCTION foreign_table_history_requests()
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'history_requests';
BEGIN
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_foreign_reserve_pub'
' FOREIGN KEY (reserve_pub) '
' REFERENCES reserves(reserve_pub) ON DELETE CASCADE'
);
END $$;
CREATE OR REPLACE FUNCTION history_requests_insert_trigger()
RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
INSERT INTO reserve_history
(reserve_pub
,table_name
,serial_id)
VALUES
(NEW.reserve_pub
,'history_requests'
,NEW.history_request_serial_id);
RETURN NEW;
END $$;
COMMENT ON FUNCTION history_requests_insert_trigger()
IS 'Automatically generate reserve history entry.';
CREATE FUNCTION master_table_history_requests()
RETURNS VOID
LANGUAGE plpgsql
AS $$
BEGIN
CREATE TRIGGER history_requests_on_insert
AFTER INSERT
ON history_requests
FOR EACH ROW EXECUTE FUNCTION history_requests_insert_trigger();
END $$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('history_requests'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('history_requests'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE),
('history_requests'
,'exchange-0002'
,'foreign'
,TRUE
,FALSE),
('history_requests'
,'exchange-0002'
,'master'
,TRUE
,FALSE);
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