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add notification logic on purse deletion

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This commit is contained in:
Christian Grothoff 2022-12-28 23:44:17 +01:00
parent 5533bcbf65
commit 880c14909b
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GPG Key ID: 939E6BE1E29FC3CC
8 changed files with 61 additions and 14 deletions
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2
contrib/gana

@ -1 +1 @@
Subproject commit f603a795963748040e41693daceae343b3a972ed
Subproject commit df1d198918cbdd03c18723d818979c8d09f8f231

11
src/auditor/taler-helper-auditor-purses.c
View File

@ -308,6 +308,14 @@ struct PurseSummary
*/
bool had_pi;
/**
* Was the purse deleted? FIXME: Not yet handled (do we need to? purse
* might just appear as expired eventually; but in the meantime, exchange
* may seem to have refunded the coins for no good reason...), also we do
* not yet check the deletion signature.
*/
bool purse_deleted;
};
@ -407,7 +415,8 @@ setup_purse (struct PurseContext *pc,
&ps->total_value,
&ps->exchange_balance,
&ps->h_contract_terms,
&ps->merge_timestamp);
&ps->merge_timestamp,
&ps->purse_deleted);
if (0 >= qs)
{
GNUNET_free (ps);

18
src/exchange/taler-exchange-httpd_purses_delete.c
View File

@ -24,6 +24,7 @@
#include <gnunet/gnunet_json_lib.h>
#include <jansson.h>
#include <microhttpd.h>
#include "taler_dbevents.h"
#include "taler_json_lib.h"
#include "taler_mhd_lib.h"
#include "taler-exchange-httpd_common_deposit.h"
@ -131,6 +132,23 @@ TEH_handler_purses_delete (
TALER_EC_EXCHANGE_PURSE_DELETE_ALREADY_DECIDED,
NULL);
}
{
/* Possible minor optimization: integrate notification with
transaction above... */
struct TALER_PurseEventP rep = {
.header.size = htons (sizeof (rep)),
.header.type = htons (TALER_DBEVENT_EXCHANGE_PURSE_DEPOSITED),
.purse_pub = purse_pub
};
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Notifying about purse deletion %s\n",
TALER_B2S (&purse_pub));
TEH_plugin->event_notify (TEH_plugin->cls,
&rep.header,
NULL,
0);
}
/* success */
return TALER_MHD_reply_static (connection,
MHD_HTTP_NO_CONTENT,

18
src/exchange/taler-exchange-httpd_purses_deposit.c
View File

@ -374,6 +374,7 @@ TEH_handler_purses_deposit (
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_TIME_Timestamp create_timestamp;
struct GNUNET_TIME_Timestamp merge_timestamp;
bool was_deleted;
qs = TEH_plugin->select_purse (
TEH_plugin->cls,
@ -383,7 +384,8 @@ TEH_handler_purses_deposit (
&pcc.amount,
&pcc.deposit_total,
&pcc.h_contract_terms,
&merge_timestamp);
&merge_timestamp,
&was_deleted);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
@ -406,12 +408,16 @@ TEH_handler_purses_deposit (
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
break; /* handled below */
}
if (GNUNET_TIME_absolute_is_past (pcc.purse_expiration.abs_time))
if (GNUNET_TIME_absolute_is_past (pcc.purse_expiration.abs_time) ||
was_deleted)
{
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_GONE,
TALER_EC_EXCHANGE_GENERIC_PURSE_EXPIRED,
NULL);
return TALER_MHD_reply_with_error (
connection,
MHD_HTTP_GONE,
was_deleted
? TALER_EC_EXCHANGE_GENERIC_PURSE_DELETED
: TALER_EC_EXCHANGE_GENERIC_PURSE_EXPIRED,
GNUNET_TIME_timestamp2s (pcc.purse_expiration));
}
}

11
src/exchange/taler-exchange-httpd_purses_get.c
View File

@ -207,6 +207,7 @@ TEH_handler_purses_get (struct TEH_RequestContext *rc,
const char *const args[2])
{
struct GetContext *gc = rc->rh_ctx;
bool purse_deleted;
MHD_RESULT res;
if (NULL == gc)
@ -312,7 +313,8 @@ TEH_handler_purses_get (struct TEH_RequestContext *rc,
&gc->amount,
&gc->deposited,
&gc->h_contract,
&gc->merge_timestamp);
&gc->merge_timestamp,
&purse_deleted);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
@ -367,11 +369,14 @@ TEH_handler_purses_get (struct TEH_RequestContext *rc,
gc->eh = eh2;
}
}
if (GNUNET_TIME_absolute_is_past (gc->purse_expiration.abs_time))
if (GNUNET_TIME_absolute_is_past (gc->purse_expiration.abs_time) ||
purse_deleted)
{
return TALER_MHD_reply_with_error (rc->connection,
MHD_HTTP_GONE,
TALER_EC_EXCHANGE_GENERIC_PURSE_EXPIRED,
purse_deleted
? TALER_EC_EXCHANGE_GENERIC_PURSE_DELETED
: TALER_EC_EXCHANGE_GENERIC_PURSE_EXPIRED,
GNUNET_TIME_timestamp2s (
gc->purse_expiration));
}

7
src/exchangedb/pg_select_purse.c
View File

@ -35,7 +35,8 @@ TEH_PG_select_purse (
struct TALER_Amount *amount,
struct TALER_Amount *deposited,
struct TALER_PrivateContractHashP *h_contract_terms,
struct GNUNET_TIME_Timestamp *merge_timestamp)
struct GNUNET_TIME_Timestamp *merge_timestamp,
bool *purse_deleted)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
@ -57,6 +58,8 @@ TEH_PG_select_purse (
GNUNET_PQ_result_spec_timestamp ("merge_timestamp",
merge_timestamp),
NULL),
GNUNET_PQ_result_spec_bool ("purse_deleted",
purse_deleted),
GNUNET_PQ_result_spec_end
};
@ -72,8 +75,10 @@ TEH_PG_select_purse (
",balance_val"
",balance_frac"
",merge_timestamp"
",purse_sig IS NOT NULL AS purse_deleted"
" FROM purse_requests"
" LEFT JOIN purse_merges USING (purse_pub)"
" LEFT JOIN purse_deletion USING (purse_pub)"
" WHERE purse_pub=$1;");
*merge_timestamp = GNUNET_TIME_UNIT_FOREVER_TS;
return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,

4
src/exchangedb/pg_select_purse.h
View File

@ -37,6 +37,7 @@
* @param[out] deposited set to actual amount put into the purse so far
* @param[out] h_contract_terms set to hash of the contract for the purse
* @param[out] merge_timestamp set to time when the purse was merged, or NEVER if not
* @param[out] purse_deleted set to true if purse was deleted
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
@ -48,7 +49,8 @@ TEH_PG_select_purse (
struct TALER_Amount *amount,
struct TALER_Amount *deposited,
struct TALER_PrivateContractHashP *h_contract_terms,
struct GNUNET_TIME_Timestamp *merge_timestamp);
struct GNUNET_TIME_Timestamp *merge_timestamp,
bool *purse_deleted);
#endif

4
src/include/taler_exchangedb_plugin.h
View File

@ -5827,6 +5827,7 @@ struct TALER_EXCHANGEDB_Plugin
* @param[out] deposited set to actual amount put into the purse so far
* @param[out] h_contract_terms set to hash of the contract for the purse
* @param[out] merge_timestamp set to time when the purse was merged, or NEVER if not
* @param[out] purse_deleted set to true if purse was deleted
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
@ -5838,7 +5839,8 @@ struct TALER_EXCHANGEDB_Plugin
struct TALER_Amount *amount,
struct TALER_Amount *deposited,
struct TALER_PrivateContractHashP *h_contract_terms,
struct GNUNET_TIME_Timestamp *merge_timestamp);
struct GNUNET_TIME_Timestamp *merge_timestamp,
bool *purse_deleted);
/**