From 9580dd19c23e5591cc022dce717eca7bc745c5b0 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 27 Nov 2022 00:16:00 +0100
Subject: intermediate step in major SQL refactoring (not done at all)

---
 src/exchangedb/0002-reserves.sql | 74 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 src/exchangedb/0002-reserves.sql

(limited to 'src/exchangedb/0002-reserves.sql')

diff --git a/src/exchangedb/0002-reserves.sql b/src/exchangedb/0002-reserves.sql
new file mode 100644
index 000000000..7cb561a90
--- /dev/null
+++ b/src/exchangedb/0002-reserves.sql
@@ -0,0 +1,74 @@
+--
+-- 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_reserves(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'reserves';
+BEGIN
+
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(reserve_uuid BIGINT GENERATED BY DEFAULT AS IDENTITY'
+      ',reserve_pub BYTEA PRIMARY KEY CHECK(LENGTH(reserve_pub)=32)'
+      ',current_balance_val INT8 NOT NULL DEFAULT(0)'
+      ',current_balance_frac INT4 NOT NULL DEFAULT(0)'
+      ',purses_active INT8 NOT NULL DEFAULT(0)'
+      ',purses_allowed INT8 NOT NULL DEFAULT(0)'
+      ',max_age INT4 NOT NULL DEFAULT(120)'
+      ',expiration_date INT8 NOT NULL'
+      ',gc_date INT8 NOT NULL'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (reserve_pub)'
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_expiration_index '
+    'ON ' || table_name || ' '
+    '(expiration_date'
+    ',current_balance_val'
+    ',current_balance_frac'
+    ');'
+  );
+  EXECUTE FORMAT (
+    'COMMENT ON INDEX ' || table_name || '_by_expiration_index '
+    'IS ' || quote_literal('used in get_expired_reserves') || ';'
+  );
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_reserve_uuid_index '
+    'ON ' || table_name || ' '
+    '(reserve_uuid);'
+  );
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_gc_date_index '
+    'ON ' || table_name || ' '
+    '(gc_date);'
+  );
+  EXECUTE FORMAT (
+    'COMMENT ON INDEX ' || table_name || '_by_gc_date_index '
+    'IS ' || quote_literal('for reserve garbage collection') || ';'
+  );
+
+END
+$$;
-- 
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