include/sql/0002-cs_nonce_locks.sql

@@ -0,0 +1,97 @@
+--
+-- 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_cs_nonce_locks(
+  partition_suffix TEXT DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE %I'
+      '(cs_nonce_lock_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+      ',nonce BYTEA PRIMARY KEY CHECK (LENGTH(nonce)=32)'
+      ',op_hash BYTEA NOT NULL CHECK (LENGTH(op_hash)=64)'
+      ',max_denomination_serial INT8 NOT NULL'
+    ') %s ;'
+    ,'cs_nonce_locks'
+    ,'PARTITION BY HASH (nonce)'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'ensures a Clause Schnorr client nonce is locked for use with an operation identified by a hash'
+    ,'cs_nonce_locks'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'actual nonce submitted by the client'
+    ,'nonce'
+    ,'cs_nonce_locks'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'hash (RC for refresh, blind coin hash for withdraw) the nonce may be used with'
+    ,'op_hash'
+    ,'cs_nonce_locks'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Maximum number of a CS denomination serial the nonce could be used with, for GC'
+    ,'max_denomination_serial'
+    ,'cs_nonce_locks'
+    ,partition_suffix
+  );
+END
+$$;
+
+
+CREATE FUNCTION constrain_table_cs_nonce_locks(
+  IN partition_suffix TEXT
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name TEXT DEFAULT 'cs_nonce_locks';
+BEGIN
+  table_name = concat_ws('_', table_name, partition_suffix);
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_cs_nonce_lock_serial_id_key'
+    ' UNIQUE (cs_nonce_lock_serial_id)'
+  );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('cs_nonce_locks'
+    ,'exchange-0002'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('cs_nonce_locks'
+    ,'exchange-0002'
+    ,'constrain'
+    ,TRUE
+    ,FALSE);