exchange/src/exchangedb/0002-wire_out.sql

--
-- 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 FUNCTION create_table_wire_out(
  IN partition_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'wire_out';
BEGIN
  PERFORM create_partitioned_table(
    'CREATE TABLE IF NOT EXISTS %I'
      '(wireout_uuid BIGINT GENERATED BY DEFAULT AS IDENTITY'
      ',execution_date INT8 NOT NULL'
      ',wtid_raw BYTEA UNIQUE NOT NULL CHECK (LENGTH(wtid_raw)=32)'
      ',wire_target_h_payto BYTEA CHECK (LENGTH(wire_target_h_payto)=32)'
      ',exchange_account_section TEXT NOT NULL'
      ',amount_val INT8 NOT NULL'
      ',amount_frac INT4 NOT NULL'
    ') %s ;'
    ,table_name
    ,'PARTITION BY HASH (wtid_raw)'
    ,partition_suffix
  );
  PERFORM comment_partitioned_table(
     'wire transfers the exchange has executed'
    ,table_name
    ,partition_suffix
  );
  PERFORM comment_partitioned_column(
     'identifies the configuration section with the debit account of this payment'
    ,'exchange_account_section'
    ,table_name
    ,partition_suffix
  );
  PERFORM comment_partitioned_column(
     'Identifies the credited bank account and KYC status'
    ,'wire_target_h_payto'
    ,table_name
    ,partition_suffix
  );
END
$$;


CREATE FUNCTION constrain_table_wire_out(
  IN partition_suffix VARCHAR
)
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'wire_out';
BEGIN
  table_name = concat_ws('_', table_name, partition_suffix);
  EXECUTE FORMAT (
    'CREATE INDEX ' || table_name || '_by_wire_target_h_payto_index '
    'ON ' || table_name || ' '
    '(wire_target_h_payto);'
  );
  EXECUTE FORMAT (
    'ALTER TABLE ' || table_name ||
    ' ADD CONSTRAINT ' || table_name || '_wireout_uuid_pkey'
    ' PRIMARY KEY (wireout_uuid)'
  );
END
$$;


CREATE FUNCTION wire_out_delete_trigger()
  RETURNS trigger
  LANGUAGE plpgsql
  AS $$
BEGIN
  DELETE FROM exchange.aggregation_tracking
   WHERE wtid_raw = OLD.wtid_raw;
  RETURN OLD;
END $$;
COMMENT ON FUNCTION wire_out_delete_trigger()
  IS 'Replicate reserve_out deletions into aggregation_tracking. This replaces an earlier use of an ON DELETE CASCADE that required a DEFERRABLE constraint and conflicted with nice partitioning.';


CREATE FUNCTION master_table_wire_out()
RETURNS void
LANGUAGE plpgsql
AS $$
BEGIN
  CREATE TRIGGER wire_out_on_delete
    AFTER DELETE
      ON wire_out
     FOR EACH ROW EXECUTE FUNCTION wire_out_delete_trigger();
END $$;


INSERT INTO exchange_tables
    (name
    ,version
    ,action
    ,partitioned
    ,by_range)
  VALUES
    ('wire_out'
    ,'exchange-0002'
    ,'create'
    ,TRUE
    ,FALSE),
    ('wire_out'
    ,'exchange-0002'
    ,'constrain'
    ,TRUE
    ,FALSE),
    ('wire_out'
    ,'exchange-0002'
    ,'master'
    ,TRUE
    ,FALSE);