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

1 files changed, 60 insertions, 0 deletions

diff --git a/src/exchangedb/0003-purse_actions.sql b/src/exchangedb/0003-purse_actions.sql
new file mode 100644
index 000000000..df8eecea7
--- /dev/null
+++ b/src/exchangedb/0003-purse_actions.sql
@@ -0,0 +1,60 @@
+--
+-- 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 TABLE IF NOT EXISTS purse_actions
+  (purse_pub BYTEA NOT NULL PRIMARY KEY CHECK(LENGTH(purse_pub)=32)
+  ,action_date INT8 NOT NULL
+  ,partner_serial_id INT8
+  );
+COMMENT ON TABLE purse_actions
+  IS 'purses awaiting some action by the router';
+COMMENT ON COLUMN purse_actions.purse_pub
+  IS 'public (contract) key of the purse';
+COMMENT ON COLUMN purse_actions.action_date
+  IS 'when is the purse ready for action';
+COMMENT ON COLUMN purse_actions.partner_serial_id
+  IS 'wad target of an outgoing wire transfer, 0 for local, NULL if the purse is unmerged and thus the target is still unknown';
+
+CREATE INDEX IF NOT EXISTS purse_action_by_target
+  ON purse_actions
+  (partner_serial_id,action_date);
+
+
+CREATE OR REPLACE FUNCTION purse_requests_insert_trigger()
+  RETURNS trigger
+  LANGUAGE plpgsql
+  AS $$
+BEGIN
+  INSERT INTO
+    purse_actions
+    (purse_pub
+    ,action_date)
+  VALUES
+    (NEW.purse_pub
+    ,NEW.purse_expiration);
+  RETURN NEW;
+END $$;
+COMMENT ON FUNCTION purse_requests_insert_trigger()
+  IS 'When a purse is created, insert it into the purse_action table to take action when the purse expires.';
+
+CREATE TRIGGER purse_requests_on_insert
+  AFTER INSERT
+   ON purse_requests
+   FOR EACH ROW EXECUTE FUNCTION purse_requests_insert_trigger();
+COMMENT ON TRIGGER purse_requests_on_insert
+        ON purse_requests
+  IS 'Here we install an entry for the purse expiration.';