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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_refresh_revealed_coins(
IN partition_suffix TEXT DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'refresh_revealed_coins';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I'
'(rrc_serial BIGINT GENERATED BY DEFAULT AS IDENTITY'
',melt_serial_id INT8 NOT NULL'
',freshcoin_index INT4 NOT NULL'
',link_sig BYTEA NOT NULL CHECK(LENGTH(link_sig)=64)'
',denominations_serial INT8 NOT NULL'
',coin_ev BYTEA NOT NULL'
',h_coin_ev BYTEA NOT NULL CHECK(LENGTH(h_coin_ev)=64)'
',ev_sig BYTEA NOT NULL'
',ewv BYTEA NOT NULL'
') %s ;'
,table_name
,'PARTITION BY HASH (melt_serial_id)'
,partition_suffix
);
PERFORM comment_partitioned_table(
'Revelations about the new coins that are to be created during a melting session.'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'needed for exchange-auditor replication logic'
,'rrc_serial'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Identifies the refresh commitment (rc) of the melt operation.'
,'melt_serial_id'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'index of the fresh coin being created (one melt operation may result in multiple fresh coins)'
,'freshcoin_index'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Signature of type WALLET_COIN_LINK, proves exchange did not tamper with the link data'
,'link_sig'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'envelope of the new coin to be signed'
,'coin_ev'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'exchange contributed values in the creation of the fresh coin (see /csr)'
,'ewv'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'hash of the envelope of the new coin to be signed (for lookups)'
,'h_coin_ev'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'exchange signature over the envelope'
,'ev_sig'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_refresh_revealed_coins(
IN partition_suffix TEXT
)
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'refresh_revealed_coins';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_coins_by_melt_serial_id_index '
'ON ' || table_name || ' '
'(melt_serial_id);'
);
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_rrc_serial_key'
' UNIQUE (rrc_serial) '
',ADD CONSTRAINT ' || table_name || '_coin_ev_key'
' UNIQUE (coin_ev) '
',ADD CONSTRAINT ' || table_name || '_h_coin_ev_key'
' UNIQUE (h_coin_ev) '
',ADD PRIMARY KEY (melt_serial_id, freshcoin_index)'
);
END
$$;
CREATE FUNCTION foreign_table_refresh_revealed_coins()
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'refresh_revealed_coins';
BEGIN
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_foreign_melt'
' FOREIGN KEY (melt_serial_id)'
' REFERENCES refresh_commitments (melt_serial_id) ON DELETE CASCADE'
',ADD CONSTRAINT ' || table_name || '_foreign_denom'
' FOREIGN KEY (denominations_serial)'
' REFERENCES denominations (denominations_serial) ON DELETE CASCADE'
);
END
$$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('refresh_revealed_coins'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('refresh_revealed_coins'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE),
('refresh_revealed_coins'
,'exchange-0002'
,'foreign'
,TRUE
,FALSE);
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