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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_account_merges(
IN partition_suffix TEXT DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'account_merges';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE IF NOT EXISTS %I '
'(account_merge_request_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
',reserve_pub BYTEA NOT NULL CHECK (LENGTH(reserve_pub)=32)'
',reserve_sig BYTEA NOT NULL CHECK (LENGTH(reserve_sig)=64)'
',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
',wallet_h_payto BYTEA NOT NULL CHECK (LENGTH(wallet_h_payto)=32)'
',PRIMARY KEY (purse_pub)'
') %s ;'
,table_name
,'PARTITION BY HASH (purse_pub)'
,partition_suffix
);
PERFORM comment_partitioned_table(
'Merge requests where a purse- and account-owner requested merging the purse into the account'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'public key of the target reserve'
,'reserve_pub'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'public key of the purse'
,'purse_pub'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'signature by the reserve private key affirming the merge, of type TALER_SIGNATURE_WALLET_ACCOUNT_MERGE'
,'reserve_sig'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_account_merges(
IN partition_suffix TEXT
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'account_merges';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
-- Note: this index *may* be useful in
-- pg_get_reserve_history depending on how
-- smart the DB is when computing the JOIN.
-- Removing it MAY boost performance slightly, at
-- the expense of trouble if the "merge_by_reserve"
-- query planner goes off the rails. Needs benchmarking
-- to be sure.
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_by_reserve_pub '
'ON ' || table_name || ' '
'(reserve_pub);'
);
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_account_merge_request_serial_id_key'
' UNIQUE (account_merge_request_serial_id) '
);
END
$$;
CREATE FUNCTION foreign_table_account_merges()
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'account_merges';
BEGIN
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_foreign_reserve_pub'
' FOREIGN KEY (reserve_pub) '
' REFERENCES reserves (reserve_pub) ON DELETE CASCADE'
',ADD CONSTRAINT ' || table_name || '_foreign_purse_pub'
' FOREIGN KEY (purse_pub) '
' REFERENCES purse_requests (purse_pub)'
);
END
$$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('account_merges'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('account_merges'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE),
('account_merges'
,'exchange-0002'
,'foreign'
,TRUE
,FALSE);
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