diff options
Diffstat (limited to 'src/exchangedb/exchange_do_deposit.sql')
| -rw-r--r-- | src/exchangedb/exchange_do_deposit.sql | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/exchangedb/exchange_do_deposit.sql b/src/exchangedb/exchange_do_deposit.sql new file mode 100644 index 000000000..c89e9e470 --- /dev/null +++ b/src/exchangedb/exchange_do_deposit.sql @@ -0,0 +1,206 @@ +-- +-- This file is part of TALER +-- Copyright (C) 2014--2023 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 exchange_do_deposit( + -- For batch_deposits + IN in_shard INT8, + IN in_merchant_pub BYTEA, + IN in_wallet_timestamp INT8, + IN in_exchange_timestamp INT8, + IN in_refund_deadline INT8, + IN in_wire_deadline INT8, + IN in_h_contract_terms BYTEA, + IN in_wallet_data_hash BYTEA, -- can be NULL + IN in_wire_salt BYTEA, + IN in_wire_target_h_payto BYTEA, + IN in_policy_details_serial_id INT8, -- can be NULL + IN in_policy_blocked BOOLEAN, + -- For wire_targets + IN in_receiver_wire_account TEXT, + -- For coin_deposits + IN ina_coin_pub BYTEA[], + IN ina_coin_sig BYTEA[], + IN ina_amount_with_fee taler_amount[], + OUT out_exchange_timestamp INT8, + OUT out_insufficient_balance_coin_index INT4, -- index of coin with bad balance, NULL if none + OUT out_conflict BOOL + ) +LANGUAGE plpgsql +AS $$ +DECLARE + wtsi INT8; -- wire target serial id + bdsi INT8; -- batch_deposits serial id + i INT4; + ini_amount_with_fee taler_amount; + ini_coin_pub BYTEA; + ini_coin_sig BYTEA; +BEGIN +-- Shards: +-- INSERT wire_targets (by h_payto), ON CONFLICT DO NOTHING; +-- INSERT batch_deposits (by shard, merchant_pub), ON CONFLICT idempotency check; +-- INSERT[] coin_deposits (by coin_pub), ON CONFLICT idempotency check; +-- UPDATE[] known_coins (by coin_pub) + + +-- First, get or create the 'wtsi' +INSERT INTO wire_targets + (wire_target_h_payto + ,payto_uri) + VALUES + (in_wire_target_h_payto + ,in_receiver_wire_account) + ON CONFLICT DO NOTHING -- for CONFLICT ON (wire_target_h_payto) + RETURNING + wire_target_serial_id + INTO + wtsi; + +IF NOT FOUND +THEN + SELECT + wire_target_serial_id + INTO + wtsi + FROM wire_targets + WHERE + wire_target_h_payto=in_wire_target_h_payto; +END IF; + + +-- Second, create the batch_deposits entry +INSERT INTO batch_deposits + (shard + ,merchant_pub + ,wallet_timestamp + ,exchange_timestamp + ,refund_deadline + ,wire_deadline + ,h_contract_terms + ,wallet_data_hash + ,wire_salt + ,wire_target_h_payto + ,policy_details_serial_id + ,policy_blocked + ) + VALUES + (in_shard + ,in_merchant_pub + ,in_wallet_timestamp + ,in_exchange_timestamp + ,in_refund_deadline + ,in_wire_deadline + ,in_h_contract_terms + ,in_wallet_data_hash + ,in_wire_salt + ,in_wire_target_h_payto + ,in_policy_details_serial_id + ,in_policy_blocked) + ON CONFLICT DO NOTHING -- for CONFLICT ON (merchant_pub, h_contract_terms) + RETURNING + batch_deposit_serial_id + INTO + bdsi; + +IF NOT FOUND +THEN + -- Idempotency check: see if an identical record exists. + -- We do select over merchant_pub, h_contract_terms and wire_target_h_payto + -- first to maximally increase the chance of using the existing index. + SELECT + exchange_timestamp + ,batch_deposit_serial_id + INTO + out_exchange_timestamp + ,bdsi + FROM batch_deposits + WHERE shard=in_shard + AND merchant_pub=in_merchant_pub + AND h_contract_terms=in_h_contract_terms + AND wire_target_h_payto=in_wire_target_h_payto + -- now check the rest, too + AND ( (wallet_data_hash=in_wallet_data_hash) OR + (wallet_data_hash IS NULL AND in_wallet_data_hash IS NULL) ) + AND wire_salt=in_wire_salt + AND wallet_timestamp=in_wallet_timestamp + AND refund_deadline=in_refund_deadline + AND wire_deadline=in_wire_deadline + AND ( (policy_details_serial_id=in_policy_details_serial_id) OR + (policy_details_serial_id IS NULL AND in_policy_details_serial_id IS NULL) ); + IF NOT FOUND + THEN + -- Deposit exists, but with *strange* differences. Not allowed. + out_conflict=TRUE; + RETURN; + END IF; +END IF; + +out_conflict=FALSE; + +-- Deposit each coin + +FOR i IN 1..array_length(ina_coin_pub,1) +LOOP + ini_coin_pub = ina_coin_pub[i]; + ini_coin_sig = ina_coin_sig[i]; + ini_amount_with_fee = ina_amount_with_fee[i]; + + INSERT INTO coin_deposits + (batch_deposit_serial_id + ,coin_pub + ,coin_sig + ,amount_with_fee + ) + VALUES + (bdsi + ,ini_coin_pub + ,ini_coin_sig + ,ini_amount_with_fee + ) + ON CONFLICT DO NOTHING; + + IF FOUND + THEN + -- Insert did happen, update balance in known_coins! + + UPDATE known_coins kc + SET + remaining.frac=(kc.remaining).frac-ini_amount_with_fee.frac + + CASE + WHEN (kc.remaining).frac < ini_amount_with_fee.frac + THEN 100000000 + ELSE 0 + END, + remaining.val=(kc.remaining).val-ini_amount_with_fee.val + - CASE + WHEN (kc.remaining).frac < ini_amount_with_fee.frac + THEN 1 + ELSE 0 + END + WHERE coin_pub=ini_coin_pub + AND ( ((kc.remaining).val > ini_amount_with_fee.val) OR + ( ((kc.remaining).frac >= ini_amount_with_fee.frac) AND + ((kc.remaining).val >= ini_amount_with_fee.val) ) ); + + IF NOT FOUND + THEN + -- Insufficient balance. + -- Note: C arrays are 0 indexed, but i started at 1 + out_insufficient_balance_coin_index=i-1; + RETURN; + END IF; + END IF; +END LOOP; -- end FOR all coins + +END $$; |