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author | Christian Grothoff <christian@grothoff.org> | 2018-08-19 17:50:28 +0200 |
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committer | Christian Grothoff <christian@grothoff.org> | 2018-08-19 17:50:28 +0200 |
commit | 121a0692ea76ef40a4ad3f97f558139053fc7a2e (patch) | |
tree | 0008fbeeceb73fd34302ff50fa5812d9b4535ba5 | |
parent | e2ac27fe380ece0213e354099b29f850b5e8b768 (diff) | |
download | exchange-121a0692ea76ef40a4ad3f97f558139053fc7a2e.tar.xz |
use existing reserve balance table instead of recomputing reserve balance each time
-rw-r--r-- | src/exchange/taler-exchange-httpd_reserve_withdraw.c | 138 |
1 files changed, 23 insertions, 115 deletions
diff --git a/src/exchange/taler-exchange-httpd_reserve_withdraw.c b/src/exchange/taler-exchange-httpd_reserve_withdraw.c index 16214577a..beb44e31e 100644 --- a/src/exchange/taler-exchange-httpd_reserve_withdraw.c +++ b/src/exchange/taler-exchange-httpd_reserve_withdraw.c @@ -181,13 +181,9 @@ withdraw_transaction (void *cls, int *mhd_ret) { struct WithdrawContext *wc = cls; - struct TALER_EXCHANGEDB_ReserveHistory *rh; - struct TALER_Amount deposit_total; - struct TALER_Amount withdraw_total; - struct TALER_Amount balance; - struct TALER_Amount fee_withdraw; - int res; + struct TALER_EXCHANGEDB_Reserve r; enum GNUNET_DB_QueryStatus qs; + struct TALER_Amount fee_withdraw; struct TALER_DenominationSignature denom_sig; #if OPTIMISTIC_SIGN @@ -221,11 +217,13 @@ withdraw_transaction (void *cls, GNUNET_assert (0 == qs); wc->collectable.sig = denom_sig; + + /* Check if balance is sufficient */ - qs = TEH_plugin->get_reserve_history (TEH_plugin->cls, - session, - &wc->wsrd.reserve_pub, - &rh); + r.pub = wc->wsrd.reserve_pub; + qs = TEH_plugin->reserve_get (TEH_plugin->cls, + session, + &r); if (0 > qs) { if (GNUNET_DB_STATUS_HARD_ERROR == qs) @@ -233,7 +231,7 @@ withdraw_transaction (void *cls, TALER_EC_WITHDRAW_DB_FETCH_ERROR); return qs; } - if (NULL == rh) + if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs) { *mhd_ret = TEH_RESPONSE_reply_arg_unknown (connection, TALER_EC_WITHDRAW_RESERVE_UNKNOWN, @@ -241,119 +239,29 @@ withdraw_transaction (void *cls, return GNUNET_DB_STATUS_HARD_ERROR; } - /* calculate balance of the reserve */ - res = 0; - for (const struct TALER_EXCHANGEDB_ReserveHistory *pos = rh; - NULL != pos; - pos = pos->next) - { - switch (pos->type) - { - case TALER_EXCHANGEDB_RO_BANK_TO_EXCHANGE: - if (0 == (res & 1)) - deposit_total = pos->details.bank->amount; - else - if (GNUNET_OK != - TALER_amount_add (&deposit_total, - &deposit_total, - &pos->details.bank->amount)) - { - *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, - TALER_EC_WITHDRAW_AMOUNT_DEPOSITS_OVERFLOW); - return GNUNET_DB_STATUS_HARD_ERROR; - } - res |= 1; - break; - case TALER_EXCHANGEDB_RO_WITHDRAW_COIN: - { - if (0 == (res & 2)) - withdraw_total = pos->details.withdraw->amount_with_fee; - else - if (GNUNET_OK != - TALER_amount_add (&withdraw_total, - &withdraw_total, - &pos->details.withdraw->amount_with_fee)) - { - *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, - TALER_EC_WITHDRAW_AMOUNT_WITHDRAWALS_OVERFLOW); - return GNUNET_DB_STATUS_HARD_ERROR; - } - res |= 2; - break; - } - case TALER_EXCHANGEDB_RO_PAYBACK_COIN: - if (0 == (res & 1)) - deposit_total = pos->details.payback->value; - else - if (GNUNET_OK != - TALER_amount_add (&deposit_total, - &deposit_total, - &pos->details.payback->value)) - { - *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, - TALER_EC_WITHDRAW_AMOUNT_DEPOSITS_OVERFLOW); - return GNUNET_DB_STATUS_HARD_ERROR; - } - res |= 1; - break; - - case TALER_EXCHANGEDB_RO_EXCHANGE_TO_BANK: - if (0 == (res & 2)) - withdraw_total = pos->details.closing->amount; - else - if (GNUNET_OK != - TALER_amount_add (&withdraw_total, - &withdraw_total, - &pos->details.closing->amount)) - { - *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, - TALER_EC_WITHDRAW_AMOUNT_WITHDRAWALS_OVERFLOW); - return GNUNET_DB_STATUS_HARD_ERROR; - } - - res |= 2; - break; - } - } - if (0 == (res & 1)) - { - /* did not encounter any wire transfer operations, how can we have a reserve? */ - GNUNET_break (0); - *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, - TALER_EC_WITHDRAW_RESERVE_WITHOUT_WIRE_TRANSFER); - return GNUNET_DB_STATUS_HARD_ERROR; - } - if (0 == (res & 2)) - { - /* did not encounter any withdraw operations, set to zero */ - GNUNET_assert (GNUNET_OK == - TALER_amount_get_zero (deposit_total.currency, - &withdraw_total)); - } - /* All reserve balances should be non-negative */ - if (GNUNET_SYSERR == - TALER_amount_subtract (&balance, - &deposit_total, - &withdraw_total)) - { - GNUNET_break (0); /* database inconsistent */ - *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, - TALER_EC_WITHDRAW_RESERVE_HISTORY_IMPOSSIBLE); - return GNUNET_DB_STATUS_HARD_ERROR; - } - if (0 < TALER_amount_cmp (&wc->amount_required, - &balance)) + &r.balance)) { + struct TALER_EXCHANGEDB_ReserveHistory *rh; + GNUNET_break_op (0); + qs = TEH_plugin->get_reserve_history (TEH_plugin->cls, + session, + &wc->wsrd.reserve_pub, + &rh); + if (0 >= qs) + { + if (GNUNET_DB_STATUS_HARD_ERROR == qs) + *mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection, + TALER_EC_WITHDRAW_DB_FETCH_ERROR); + return qs; + } *mhd_ret = reply_reserve_withdraw_insufficient_funds (connection, rh); TEH_plugin->free_reserve_history (TEH_plugin->cls, rh); return GNUNET_DB_STATUS_HARD_ERROR; } - TEH_plugin->free_reserve_history (TEH_plugin->cls, - rh); /* Balance is good, sign the coin! */ #if !OPTIMISTIC_SIGN |