[taler-exchange] branch master updated: added schema for withdraw with age restriction

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oec pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 23626c02 added schema for withdraw with age restriction
23626c02 is described below

commit 23626c02c7cbb980c0aa46ecc9fe3b55bbb55aa4
Author: Özgür Kesim <oec-taler@kesim.org>
AuthorDate: Tue Jan 10 21:56:56 2023 +0100

    added schema for withdraw with age restriction
---
 src/exchangedb/0003-withdraw_age_commitments.sql | 143 +++++++++++++++++++++++
 src/exchangedb/0003-withdraw_age_reveals.sql     | 109 +++++++++++++++++
 2 files changed, 252 insertions(+)

diff --git a/src/exchangedb/0003-withdraw_age_commitments.sql 
b/src/exchangedb/0003-withdraw_age_commitments.sql
new file mode 100644
index 00000000..6ef118c8
--- /dev/null
+++ b/src/exchangedb/0003-withdraw_age_commitments.sql
@@ -0,0 +1,143 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 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_withdraw_age_commitments(
+  IN partition_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'withdraw_age_commitments';
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE %I'
+      '(withdraw_age_commitment_id BIGINT GENERATED BY DEFAULT AS IDENTITY' -- 
UNIQUE'
+      ',h_commitment BYTEA PRIMARY KEY CHECK (LENGTH(h_commitment)=64)'
+      ',amount_with_fee_val INT8 NOT NULL'
+      ',amount_with_fee_frac INT4 NOT NULL'
+      ',noreveal_index INT4 NOT NULL'
+      ',reserve_uuid INT8 NOT NULL' -- TODO: can here be the foreign key 
reference?
+      ',reserve_sig BYTEA CHECK (LENGTH(reserve_sig)=64)'
+      ',timestamp INT8 NOT NULL'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (reserve_uuid)' -- TODO: does that make sense?
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'Commitments made when withdrawing coins with age restriction and the 
gamma value chosen by the exchange.'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'The gamma value chosen by the exchange in the cut-and-choose protocol'
+    ,'noreveal_index'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Commitment made by the client, hash over the various client inputs in 
the cut-and-choose protocol'
+    ,'h_commitment'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Reference to the reserve from which the coins are goin to be withdrawn'
+    ,'reserve_uuid'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Signature of the reserve''s private key over the withdraw-age request'
+    ,'reserve_sig'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Timestamp of when the withdraw-age resquest was received by the exchange'
+    ,'timestamp'
+    ,table_name
+    ,partition_suffix
+  );
+END
+$$;
+
+
+CREATE FUNCTION constrain_table_withdraw_age_commitments(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'withdraw_age_commitments';
+BEGIN
+  table_name = concat_ws('_', table_name, partition_suffix);
+
+  EXECUTE FORMAT (
+    'CREATE INDEX ' || table_name || '_by_reserve_uuid'
+    ' ON ' || table_name ||
+    ' (reserve_uuid);'
+  );
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_withdraw_age_commitment_id_key'
+    ' UNIQUE (withdraw_age_commitment_id)'
+  );
+END
+$$;
+
+
+CREATE FUNCTION foreign_table_withdraw_age_commitments()
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'withdraw_age_commitments';
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_foreign_reserve_uuid'
+    ' FOREIGN KEY (reserve_uuid) '
+    ' REFERENCES reserves (reserve_uuid) ON DELETE CASCADE'
+  );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('withdraw_age_commitments'
+    ,'exchange-0003'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('withdraw_age_commitments'
+    ,'exchange-0003'
+    ,'constrain'
+    ,TRUE
+    ,FALSE),
+    ('withdraw_age_commitments'
+    ,'exchange-0003'
+    ,'foreign'
+    ,TRUE
+    ,FALSE);
diff --git a/src/exchangedb/0003-withdraw_age_reveals.sql 
b/src/exchangedb/0003-withdraw_age_reveals.sql
new file mode 100644
index 00000000..9e421c9b
--- /dev/null
+++ b/src/exchangedb/0003-withdraw_age_reveals.sql
@@ -0,0 +1,109 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 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_withdraw_age_reveals(
+  IN partition_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'withdraw_age_reveals';
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE %I'
+      '(withdraw_age_commitments_id INT8 NOT NULL' -- TODO: can here be the 
foreign key reference?
+      ',freshcoin_index INT4 NOT NULL'
+      ',denominations_serial INT8 NOT NULL' -- TODO: can here be the foreign 
key reference?
+      ',h_coin_ev BYTEA CHECK (LENGTH(h_coin_ev)=32)'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (withdraw_age_commitments_id)' -- TODO: does that make 
sense?
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'Reveal of proofs of the correct age restriction after the commitment 
when withdrawing coins with age restriction'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Foreign key reference to the corresponding commitment'
+    ,'withdraw_age_commitments_id'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Index of the coin in the withdraw-age request, which is implicitly a 
batch request'
+    ,'freshcoin_index'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Foreign key reference to the denominations'
+    ,'denominations_serial'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Hash of the blinded coins'
+    ,'h_coin_ev'
+    ,table_name
+    ,partition_suffix
+  );
+END
+$$;
+
+
+CREATE FUNCTION foreign_table_withdraw_age_reveals()
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'withdraw_age_reveals';
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_foreign_withdraw_age_commitment_id'
+    ' FOREIGN KEY (withdraw_age_commitments_id) '
+    ' REFERENCES withdraw_age_commitments (withdraw_age_commitment_id) ON 
DELETE CASCADE'
+  );
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_foreign_denominations_serial'
+    ' FOREIGN KEY (denominations_serial) '
+    ' REFERENCES denominations (denominations_serial) ON DELETE CASCADE'
+  );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('withdraw_age_reveals'
+    ,'exchange-0003'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('withdraw_age_reveals'
+    ,'exchange-0003'
+    ,'foreign'
+    ,TRUE
+    ,FALSE);

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