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-purse_requests.sql | 85 ++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 src/exchangedb/0002-purse_requests.sql

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

diff --git a/src/exchangedb/0002-purse_requests.sql b/src/exchangedb/0002-purse_requests.sql
new file mode 100644
index 000000000..135b36df8
--- /dev/null
+++ b/src/exchangedb/0002-purse_requests.sql
@@ -0,0 +1,85 @@
+--
+-- 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_purse_requests(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR DEFAULT 'purse_requests';
+BEGIN
+
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I '
+      '(purse_requests_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY' --UNIQUE
+      ',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
+      ',merge_pub BYTEA NOT NULL CHECK (LENGTH(merge_pub)=32)'
+      ',purse_creation INT8 NOT NULL'
+      ',purse_expiration INT8 NOT NULL'
+      ',h_contract_terms BYTEA NOT NULL CHECK (LENGTH(h_contract_terms)=64)'
+      ',age_limit INT4 NOT NULL'
+      ',flags INT4 NOT NULL'
+      ',in_reserve_quota BOOLEAN NOT NULL DEFAULT(FALSE)'
+      ',amount_with_fee_val INT8 NOT NULL'
+      ',amount_with_fee_frac INT4 NOT NULL'
+      ',purse_fee_val INT8 NOT NULL'
+      ',purse_fee_frac INT4 NOT NULL'
+      ',balance_val INT8 NOT NULL DEFAULT (0)'
+      ',balance_frac INT4 NOT NULL DEFAULT (0)'
+      ',purse_sig BYTEA NOT NULL CHECK(LENGTH(purse_sig)=64)'
+      ',PRIMARY KEY (purse_pub)'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (purse_pub)'
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+  -- FIXME: change to materialized index by merge_pub!
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_merge_pub '
+    'ON ' || table_name || ' '
+    '(merge_pub);'
+  );
+
+  -- FIXME: drop index on master (crosses shards)?
+  -- Or use materialized index? (needed?)
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_purse_expiration '
+    'ON ' || table_name || ' '
+    '(purse_expiration);'
+  );
+
+END
+$$;
+
+CREATE OR REPLACE FUNCTION add_constraints_to_purse_requests_partition(
+  IN partition_suffix VARCHAR
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE purse_requests_' || partition_suffix || ' '
+      'ADD CONSTRAINT purse_requests_' || partition_suffix || '_purse_requests_serial_id_key '
+        'UNIQUE (purse_requests_serial_id) '
+  );
+END
+$$;
-- 
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