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-recoup_refresh.sql | 76 ++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 src/exchangedb/0002-recoup_refresh.sql

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

diff --git a/src/exchangedb/0002-recoup_refresh.sql b/src/exchangedb/0002-recoup_refresh.sql
new file mode 100644
index 000000000..859d6dd8e
--- /dev/null
+++ b/src/exchangedb/0002-recoup_refresh.sql
@@ -0,0 +1,76 @@
+--
+-- 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_recoup_refresh(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'recoup_refresh';
+BEGIN
+
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(recoup_refresh_uuid BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
+      ',coin_pub BYTEA NOT NULL CHECK (LENGTH(coin_pub)=32)' -- REFERENCES known_coins (coin_pub)
+      ',known_coin_id BIGINT NOT NULL' -- REFERENCES known_coins (known_coin_id) ON DELETE CASCADE
+      ',coin_sig BYTEA NOT NULL CHECK(LENGTH(coin_sig)=64)'
+      ',coin_blind BYTEA NOT NULL CHECK(LENGTH(coin_blind)=32)'
+      ',amount_val INT8 NOT NULL'
+      ',amount_frac INT4 NOT NULL'
+      ',recoup_timestamp INT8 NOT NULL'
+      ',rrc_serial INT8 NOT NULL' -- REFERENCES refresh_revealed_coins (rrc_serial) ON DELETE CASCADE -- UNIQUE'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (coin_pub)'
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+  -- FIXME: any query using this index will be slow. Materialize index or change query?
+  -- Also: which query uses this index?
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_rrc_serial_index '
+    'ON ' || table_name || ' '
+    '(rrc_serial);'
+  );
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_coin_pub_index '
+    'ON ' || table_name || ' '
+    '(coin_pub);'
+  );
+
+END
+$$;
+
+CREATE OR REPLACE FUNCTION add_constraints_to_recoup_refresh_partition(
+  IN partition_suffix VARCHAR
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE recoup_refresh_' || partition_suffix || ' '
+      'ADD CONSTRAINT recoup_refresh_' || partition_suffix || '_recoup_refresh_uuid_key '
+        'UNIQUE (recoup_refresh_uuid) '
+  );
+END
+$$;
-- 
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