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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_contracts(
IN partition_suffix TEXT DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'contracts';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I '
'(contract_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
',pub_ckey BYTEA NOT NULL CHECK (LENGTH(pub_ckey)=32)'
',contract_sig BYTEA NOT NULL CHECK (LENGTH(contract_sig)=64)'
',e_contract BYTEA NOT NULL'
',purse_expiration INT8 NOT NULL'
',PRIMARY KEY (purse_pub)'
') %s ;'
,table_name
,'PARTITION BY HASH (purse_pub)'
,partition_suffix
);
PERFORM comment_partitioned_table(
'encrypted contracts associated with purses'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'public key of the purse that the contract is associated with'
,'purse_pub'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'signature over the encrypted contract by the purse contract key'
,'contract_sig'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Public ECDH key used to encrypt the contract, to be used with the purse private key for decryption'
,'pub_ckey'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'AES-GCM encrypted contract terms (contains gzip compressed JSON after decryption)'
,'e_contract'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_contracts(
IN partition_suffix TEXT
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'contracts';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_contract_serial_id_key'
' UNIQUE (contract_serial_id) '
);
END
$$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('contracts'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('contracts'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE);
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