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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_reserves(
IN partition_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'reserves';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I'
'(reserve_uuid BIGINT GENERATED BY DEFAULT AS IDENTITY'
',reserve_pub BYTEA PRIMARY KEY CHECK(LENGTH(reserve_pub)=32)'
',current_balance_val INT8 NOT NULL DEFAULT(0)'
',current_balance_frac INT4 NOT NULL DEFAULT(0)'
',purses_active INT8 NOT NULL DEFAULT(0)'
',purses_allowed INT8 NOT NULL DEFAULT(0)'
',max_age INT4 NOT NULL DEFAULT(120)'
',expiration_date INT8 NOT NULL'
',gc_date INT8 NOT NULL'
') %s ;'
,table_name
,'PARTITION BY HASH (reserve_pub)'
,partition_suffix
);
PERFORM comment_partitioned_table(
'Summarizes the balance of a reserve. Updated when new funds are added or withdrawn.'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'EdDSA public key of the reserve. Knowledge of the private key implies ownership over the balance.'
,'reserve_pub'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Current balance remaining with the reserve.'
,'current_balance_val'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Number of purses that were created by this reserve that are not expired and not fully paid.'
,'purses_active'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Number of purses that this reserve is allowed to have active at most.'
,'purses_allowed'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Used to trigger closing of reserves that have not been drained after some time'
,'expiration_date'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Used to forget all information about a reserve during garbage collection'
,'gc_date'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_reserves(
IN partition_suffix VARCHAR
)
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
table_name VARCHAR DEFAULT 'reserves';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_unique_uuid'
' UNIQUE (reserve_uuid)'
);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_by_expiration_index '
'ON ' || table_name || ' '
'(expiration_date'
',current_balance_val'
',current_balance_frac'
');'
);
EXECUTE FORMAT (
'COMMENT ON INDEX ' || table_name || '_by_expiration_index '
'IS ' || quote_literal('used in get_expired_reserves') || ';'
);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_by_reserve_uuid_index '
'ON ' || table_name || ' '
'(reserve_uuid);'
);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_by_gc_date_index '
'ON ' || table_name || ' '
'(gc_date);'
);
EXECUTE FORMAT (
'COMMENT ON INDEX ' || table_name || '_by_gc_date_index '
'IS ' || quote_literal('for reserve garbage collection') || ';'
);
END
$$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('reserves'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('reserves'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE);
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