1 files changed, 155 insertions, 0 deletions
diff --git a/src/exchangedb/0003-age_withdraw.sql b/src/exchangedb/0003-age_withdraw.sql
new file mode 100644
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+++ b/src/exchangedb/0003-age_withdraw.sql
@@ -0,0 +1,155 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2023 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/>
+--
+-- @author Özgür Kesim
+
+CREATE FUNCTION create_table_age_withdraw(
+  IN partition_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'age_withdraw';
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE %I'
+      '(age_withdraw_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+      ',h_commitment BYTEA NOT NULL CONSTRAINT h_commitment_length CHECK(LENGTH(h_commitment)=64)'
+      ',max_age SMALLINT NOT NULL CONSTRAINT max_age_positive CHECK(max_age>=0)'
+      ',reserve_pub BYTEA NOT NULL CONSTRAINT reserve_pub_length CHECK(LENGTH(reserve_pub)=32)'
+      ',reserve_sig BYTEA NOT NULL CONSTRAINT reserve_sig_length CHECK(LENGTH(reserve_sig)=64)'
+      ',noreveal_index SMALLINT NOT NULL CONSTRAINT noreveal_index_positive CHECK(noreveal_index>=0)'
+      ',h_blind_evs BYTEA[] NOT NULL CONSTRAINT h_blind_evs_length CHECK(cardinality(h_blind_evs)=cardinality(denomination_serials))'
+      ',denom_serials INT8[] NOT NULL CONSTRAINT denominations_serial_array_length CHECK(cardinality(denom_serials)=cardinality(denom_sigs))'
+      ',denom_sigs BYTEA[] NOT NULL CONSTRAINT denom_sigs_array_length CHECK(cardinality(denom_sigs)=cardinality(denom_serials))'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (reserve_pub)'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'Commitments made when withdrawing coins with age restriction and the gamma value chosen by the exchange. '
+     'It also contains the blindly signed coins, their signatures and denominations.'
+    ,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(
+     'The maximum age (in years) that the client commits to with this request'
+    ,'max_age'
+    ,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 public key of the reserve from which the coins are going to be withdrawn'
+    ,'reserve_pub'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Signature of the reserve''s private key over the age-withdraw request'
+    ,'reserve_sig'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Array of references to the denominations'
+    ,'denom_serials'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Array of the blinded envelopes of the chosen fresh coins, with value as given by the denomination in the corresponding slot in denom_serials'
+    ,'h_blind_evs'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Array of signatures over each blinded envelope'
+    ,'denom_sigs'
+    ,table_name
+    ,partition_suffix
+  );
+END
+$$;
+
+
+CREATE FUNCTION constrain_table_age_withdraw(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'age_withdraw';
+BEGIN
+  table_name = concat_ws('_', table_name, partition_suffix);
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD PRIMARY KEY (h_commitment);'
+  );
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_h_commitment_reserve_pub_key'
+    ' UNIQUE (h_commitment, reserve_pub);'
+  );
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_age_withdraw_id_key'
+    ' UNIQUE (age_withdraw_id);'
+  );
+END
+$$;
+
+
+CREATE FUNCTION foreign_table_age_withdraw()
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'age_withdraw';
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_foreign_reserve_pub'
+    ' FOREIGN KEY (reserve_pub)'
+    ' REFERENCES reserves(reserve_pub);' -- ON DELETE CASCADE;'
+  );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+  (name
+  ,version
+  ,action
+  ,partitioned
+  ,by_range)
+VALUES
+  ('age_withdraw', 'exchange-0003', 'create',   TRUE ,FALSE),
+  ('age_withdraw', 'exchange-0003', 'constrain',TRUE ,FALSE),
+  ('age_withdraw', 'exchange-0003', 'foreign',  TRUE ,FALSE);