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minimize idle in transaction from wirewatcher

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This commit is contained in:
Christian Grothoff 2021-12-09 14:05:23 +01:00
parent ce28d3b8e4
commit a7b4cc97ec
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 41 additions and 17 deletions
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48
src/exchange/taler-exchange-wirewatch.c
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@ -125,6 +125,11 @@ struct WireAccount
*/
bool delay;
/**
* Did we start a transaction yet?
*/
bool started_transaction;
};
@ -293,7 +298,7 @@ add_account_cb (void *cls,
*
* @return #GNUNET_OK on success
*/
static int
static enum GNUNET_GenericReturnValue
exchange_serve_process_config (void)
{
if (GNUNET_OK !=
@ -473,7 +478,7 @@ do_commit (struct WireAccount *wa)
* @param json raw JSON response
* @return #GNUNET_OK to continue, #GNUNET_SYSERR to abort iteration
*/
static int
static enum GNUNET_GenericReturnValue
history_cb (void *cls,
unsigned int http_status,
enum TALER_ErrorCode ec,
@ -495,9 +500,13 @@ history_cb (void *cls,
(unsigned int) ec,
http_status);
}
if (wa->started_transaction)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"End of list. Committing progress!\n");
wa->started_transaction = false;
do_commit (wa);
}
return GNUNET_OK; /* will be ignored anyway */
}
if (serial_id < wa->latest_row_off)
@ -507,7 +516,11 @@ history_cb (void *cls,
"Serial ID %llu not monotonic (got %llu before). Failing!\n",
(unsigned long long) serial_id,
(unsigned long long) wa->latest_row_off);
if (wa->started_transaction)
{
wa->started_transaction = false;
db_plugin->rollback (db_plugin->cls);
}
GNUNET_SCHEDULER_shutdown ();
wa->hh = NULL;
return GNUNET_SYSERR;
@ -521,10 +534,31 @@ history_cb (void *cls,
(unsigned long long) wa->shard_end);
wa->latest_row_off = serial_id - 1;
wa->delay = false;
if (wa->started_transaction)
{
wa->started_transaction = false;
do_commit (wa);
}
else
GNUNET_break (0); /* how did this happen */
wa->hh = NULL;
return GNUNET_SYSERR;
}
if (! wa->started_transaction)
{
if (GNUNET_OK !=
db_plugin->start_read_committed (db_plugin->cls,
"wirewatch check for incoming wire transfers"))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to start database transaction!\n");
global_ret = EXIT_FAILURE;
GNUNET_SCHEDULER_shutdown ();
wa->hh = NULL;
return GNUNET_SYSERR;
}
wa->started_transaction = true;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Adding wire transfer over %s with (hashed) subject `%s'\n",
TALER_amount2s (&details->amount),
@ -645,16 +679,6 @@ find_transfers (void *cls)
break;
}
}
if (GNUNET_OK !=
db_plugin->start_read_committed (db_plugin->cls,
"wirewatch check for incoming wire transfers"))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to start database transaction!\n");
global_ret = EXIT_FAILURE;
GNUNET_SCHEDULER_shutdown ();
return;
}
limit = GNUNET_MIN (wa_pos->batch_size,
wa_pos->shard_end - wa_pos->batch_start);