include/sql/0002-purse_merges.sql

@@ -0,0 +1,140 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2014--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/>
+--
+
+CREATE FUNCTION create_table_purse_merges(
+  IN partition_suffix TEXT DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name TEXT DEFAULT 'purse_merges';
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE %I '
+    '(purse_merge_request_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+    ',partner_serial_id INT8'
+    ',reserve_pub BYTEA NOT NULL CHECK(length(reserve_pub)=32)'
+    ',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
+    ',merge_sig BYTEA NOT NULL CHECK (LENGTH(merge_sig)=64)'
+    ',merge_timestamp INT8 NOT NULL'
+    ',PRIMARY KEY (purse_pub)'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (purse_pub)'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'Merge requests where a purse-owner requested merging the purse into the account'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'identifies the partner exchange, NULL in case the target reserve lives at this exchange'
+    ,'partner_serial_id'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'public key of the target reserve'
+    ,'reserve_pub'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'public key of the purse'
+    ,'purse_pub'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'signature by the purse private key affirming the merge, of type TALER_SIGNATURE_WALLET_PURSE_MERGE'
+    ,'merge_sig'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'when was the merge message signed'
+    ,'merge_timestamp'
+    ,table_name
+    ,partition_suffix
+  );
+END
+$$;
+
+
+CREATE FUNCTION constrain_table_purse_merges(
+  IN partition_suffix TEXT
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name TEXT DEFAULT 'purse_merges';
+BEGIN
+  table_name = concat_ws('_', table_name, partition_suffix);
+
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_purse_merge_request_serial_id_key'
+    ' UNIQUE (purse_merge_request_serial_id) '
+  );
+END
+$$;
+
+
+CREATE FUNCTION foreign_table_purse_merges()
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name TEXT DEFAULT 'purse_merges';
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_foreign_partner_serial_id'
+    ' FOREIGN KEY (partner_serial_id) '
+    ' REFERENCES partners(partner_serial_id) ON DELETE CASCADE'
+    ',ADD CONSTRAINT ' || table_name || '_foreign_purse_pub'
+    ' FOREIGN KEY (purse_pub) '
+    ' REFERENCES purse_requests (purse_pub) ON DELETE CASCADE'
+  );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('purse_merges'
+    ,'exchange-0002'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('purse_merges'
+    ,'exchange-0002'
+    ,'constrain'
+    ,TRUE
+    ,FALSE),
+    ('purse_merges'
+    ,'exchange-0002'
+    ,'foreign'
+    ,TRUE
+    ,FALSE);