intermediate step in major SQL refactoring (not done at all)

1 files changed, 61 insertions, 0 deletions

diff --git a/src/exchangedb/0002-known_coins.sql b/src/exchangedb/0002-known_coins.sql
new file mode 100644
index 000000000..786d2a6ca
--- /dev/null
+++ b/src/exchangedb/0002-known_coins.sql
@@ -0,0 +1,61 @@
+--
+-- 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_known_coins(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR default 'known_coins';
+BEGIN
+
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(known_coin_id BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
+      ',denominations_serial INT8 NOT NULL' -- REFERENCES denominations (denominations_serial) ON DELETE CASCADE'
+      ',coin_pub BYTEA NOT NULL PRIMARY KEY CHECK (LENGTH(coin_pub)=32)'
+      ',age_commitment_hash BYTEA CHECK (LENGTH(age_commitment_hash)=32)'
+      ',denom_sig BYTEA NOT NULL'
+      ',remaining_val INT8 NOT NULL DEFAULT(0)'
+      ',remaining_frac INT4 NOT NULL DEFAULT(0)'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (coin_pub)' -- FIXME: or include denominations_serial? or multi-level partitioning?;
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+END
+$$;
+
+CREATE OR REPLACE FUNCTION add_constraints_to_known_coins_partition(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE known_coins_' || partition_suffix || ' '
+      'ADD CONSTRAINT known_coins_' || partition_suffix || '_known_coin_id_key '
+        'UNIQUE (known_coin_id)'
+  );
+END
+$$;