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wirewatch: ensure wirewatch doesn't busy-loop even if the server errors or ignores long-polling

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Christian Grothoff 2023-01-07 13:53:59 +01:00
parent 854e9fda1e
commit d782dd7f54
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 29 additions and 1 deletions
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30
src/exchange/taler-exchange-wirewatch.c
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@ -1,6 +1,6 @@
/*
This file is part of TALER
Copyright (C) 2016--2022 Taler Systems SA
Copyright (C) 2016--2023 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free Software
@ -51,6 +51,17 @@ static const struct TALER_EXCHANGEDB_AccountInfo *ai;
*/
static struct TALER_BANK_CreditHistoryHandle *hh;
/**
* Set to true if the request for history did actually
* return transaction items.
*/
static bool hh_returned_data;
/**
* When did we start the last @e hh request?
*/
static struct GNUNET_TIME_Absolute hh_start_time;
/**
* Until when is processing this wire plugin delayed?
*/
@ -455,6 +466,18 @@ transaction_completed (void)
GNUNET_SCHEDULER_shutdown ();
return;
}
if (! hh_returned_data)
{
/* Enforce long polling delay even if the server ignored it
and returned earlier */
struct GNUNET_TIME_Relative latency;
struct GNUNET_TIME_Relative left;
latency = GNUNET_TIME_absolute_get_duration (hh_start_time);
left = GNUNET_TIME_relative_subtract (LONGPOLL_TIMEOUT,
latency);
delayed_until = GNUNET_TIME_relative_to_absolute (left);
}
GNUNET_assert (NULL == task);
schedule_transfers ();
}
@ -482,6 +505,7 @@ process_reply (const struct TALER_BANK_CreditDetails *details,
transaction_completed ();
return;
}
hh_returned_data = true;
/* check serial IDs for range constraints */
for (unsigned int i = 0; i<details_length; i++)
{
@ -720,6 +744,7 @@ process_reply_batched (const struct TALER_BANK_CreditDetails *details,
enum GNUNET_DB_QueryStatus qss[details_length];
struct TALER_EXCHANGEDB_ReserveInInfo reserves[details_length];
hh_returned_data = true;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Importing %u transactions\n",
details_length);
@ -865,6 +890,7 @@ process_reply_batched2 (unsigned int batch_size,
transaction_completed ();
return;
}
hh_returned_data = true;
/* check serial IDs for range constraints */
for (unsigned int i = 0; i<details_length; i++)
{
@ -1121,6 +1147,8 @@ continue_with_shard (void *cls)
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Requesting credit history staring from %llu\n",
(unsigned long long) latest_row_off);
hh_start_time = GNUNET_TIME_absolute_get ();
hh_returned_data = false;
hh = TALER_BANK_credit_history (ctx,
ai->auth,
latest_row_off,