exchange/src/exchangedb/0003-purse_actions.sql

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-- This file is part of TALER
-- Copyright (C) 2014--2022 Taler Systems SA
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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.';


INSERT INTO exchange_tables
    (name
    ,version
    ,action
    ,partitioned
    ,by_range)
  VALUES
    ('purse_actions'
    ,'exchange-0002'
    ,'create'
    ,FALSE
    ,FALSE);