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_out.sql | 111 +++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 src/exchangedb/0002-reserves_out.sql

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

diff --git a/src/exchangedb/0002-reserves_out.sql b/src/exchangedb/0002-reserves_out.sql
new file mode 100644
index 000000000..ea8cabbc4
--- /dev/null
+++ b/src/exchangedb/0002-reserves_out.sql
@@ -0,0 +1,111 @@
+--
+-- 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_out(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR default 'reserves_out';
+BEGIN
+
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(reserve_out_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
+      ',h_blind_ev BYTEA CHECK (LENGTH(h_blind_ev)=64) UNIQUE'
+      ',denominations_serial INT8 NOT NULL' -- REFERENCES denominations (denominations_serial)'
+      ',denom_sig BYTEA NOT NULL'
+      ',reserve_uuid INT8 NOT NULL' -- REFERENCES reserves (reserve_uuid) ON DELETE CASCADE'
+      ',reserve_sig BYTEA NOT NULL CHECK (LENGTH(reserve_sig)=64)'
+      ',execution_date INT8 NOT NULL'
+      ',amount_with_fee_val INT8 NOT NULL'
+      ',amount_with_fee_frac INT4 NOT NULL'
+    ') %s ;'
+    ,'reserves_out'
+    ,'PARTITION BY HASH (h_blind_ev)'
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_reserve_out_serial_id_index '
+    'ON ' || table_name || ' '
+    '(reserve_out_serial_id);'
+  );
+  -- FIXME: change query to use reserves_out_by_reserve instead and materialize execution_date there as well???
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_reserve_uuid_and_execution_date_index '
+    'ON ' || table_name || ' '
+    '(reserve_uuid, execution_date);'
+  );
+  EXECUTE FORMAT (
+    'COMMENT ON INDEX ' || table_name || '_by_reserve_uuid_and_execution_date_index '
+    'IS ' || quote_literal('for get_reserves_out and exchange_do_withdraw_limit_check') || ';'
+  );
+
+END
+$$;
+
+
+
+CREATE OR REPLACE FUNCTION add_constraints_to_reserves_out_partition(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE reserves_out_' || partition_suffix || ' '
+      'ADD CONSTRAINT reserves_out_' || partition_suffix || '_reserve_out_serial_id_key '
+        'UNIQUE (reserve_out_serial_id)'
+  );
+END
+$$;
+
+CREATE OR REPLACE FUNCTION create_table_reserves_out_by_reserve(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'reserves_out_by_reserve';
+BEGIN
+
+  PERFORM create_partitioned_table(
+  'CREATE TABLE IF NOT EXISTS %I'
+    '(reserve_uuid INT8 NOT NULL' -- REFERENCES reserves (reserve_uuid) ON DELETE CASCADE
+    ',h_blind_ev BYTEA CHECK (LENGTH(h_blind_ev)=64)'
+    ') %s '
+    ,table_name
+    ,'PARTITION BY HASH (reserve_uuid)'
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_main_index '
+    'ON ' || table_name || ' '
+    '(reserve_uuid);'
+  );
+
+END
+$$;
-- 
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