From 42e2726f43fcc497ca905fcd5f61758aa528f353 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <grothoff@gnunet.org>
Date: Tue, 27 Dec 2022 02:25:45 +0100
Subject: -work on v3 exchangedb schema

---
 src/exchangedb/0003-aml_history.sql | 127 ++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 src/exchangedb/0003-aml_history.sql

(limited to 'src/exchangedb/0003-aml_history.sql')

diff --git a/src/exchangedb/0003-aml_history.sql b/src/exchangedb/0003-aml_history.sql
new file mode 100644
index 000000000..60382cc26
--- /dev/null
+++ b/src/exchangedb/0003-aml_history.sql
@@ -0,0 +1,127 @@
+--
+-- 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 OR REPLACE FUNCTION create_table_aml_history(
+  IN partition_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'aml_history';
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(aml_history_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+      ',h_payto BYTEA PRIMARY KEY CHECK (LENGTH(h_payto)=32)'
+      ',new_threshold_val INT8 NOT NULL DEFAULT(0)'
+      ',new_threshold_frac INT4 NOT NULL DEFAULT(0)'
+      ',new_status INT4 NOT NULL DEFAULT(0)'
+      ',decision_time INT8 NOT NULL DEFAULT(0)'
+      ',justification VARCHAR NOT NULL'
+      ',decider VARCHAR NOT NULL'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (h_payto)'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'AML decision history for a particular payment destination'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'hash of the payto://-URI this AML history is about'
+    ,'h_payto'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'new monthly inbound transaction limit below which we are OK'
+    ,'new_threshold_val'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     '0 for AML decision required, 1 for AML is OK, -1 for account is frozen (prevents further transactions)'
+    ,'new_status'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'when was the status changed'
+    ,'decision_time'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'human-readable justification for the status change'
+    ,'justification'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Name of the staff member who made the AML decision'
+    ,'decider'
+    ,table_name
+    ,partition_suffix
+  );
+END $$;
+
+COMMENT ON FUNCTION create_table_aml_history
+  IS 'Creates the aml_history table';
+
+
+CREATE OR REPLACE FUNCTION constrain_table_aml_history(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'aml_history';
+BEGIN
+  table_name = concat_ws('_', table_name, partition_suffix);
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+      ' ADD CONSTRAINT ' || table_name || '_serial_key '
+        'UNIQUE (aml_history_serial_id)'
+  );
+  EXECUTE FORMAT (
+    'CREATE INDEX ' || table_name || '_main_index '
+    'ON ' || table_name || ' '
+    '(h_payto ASC, decision_time ASC);'
+  );
+END $$;
+
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('aml_history'
+    ,'exchange-0003'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('aml_history'
+    ,'exchange-0003'
+    ,'constrain'
+    ,TRUE
+    ,FALSE);
-- 
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