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db: Add DB_reserve_get() to get a summary of the reserve

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This commit is contained in:
Sree Harsha Totakura 2015-03-05 16:16:38 +01:00
parent b6484371fb
commit 363773698a
2 changed files with 76 additions and 0 deletions
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60
src/mint/mint_db.c
View File

@ -848,6 +848,66 @@ TALER_MINT_DB_commit (PGconn *db_conn)
}
/**
* Get the summary of a reserve.
*
* @param db the database connection handle
* @param reserve_pub the public key identifying the reserve
* @param balance the amount existing in the reserve (will be filled)
* @param expiry expiration of the reserve (will be filled)
* @return #GNUNET_OK upon success; #GNUNET_NO when the given reserve is not
* found; #GNUNET_SYSERR upon failure
*/
int
TALER_MINT_DB_reserve_get (PGconn *db,
struct GNUNET_CRYPTO_EddsaPublicKey *reserve_pub,
struct TALER_Amount *balance,
struct GNUNET_TIME_Absolute *expiry)
{
PGresult *result;
uint64_t expiration_date_nbo;
struct TALER_DB_QueryParam params[] = {
TALER_DB_QUERY_PARAM_PTR(reserve_pub),
TALER_DB_QUERY_PARAM_END
};
result = TALER_DB_exec_prepared (db,
"get_reserve",
params);
if (PGRES_TUPLES_OK != PQresultStatus (result))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Query failed: %s\n",
PQresultErrorMessage (result));
PQclear (result);
return GNUNET_SYSERR;
}
if (0 == PQntuples (result))
{
PQclear (result);
return GNUNET_NO;
}
struct TALER_DB_ResultSpec rs[] = {
TALER_DB_RESULT_SPEC("expiration_date", &expiration_date_nbo),
TALER_DB_RESULT_SPEC_END
};
EXITIF (GNUNET_OK != TALER_DB_extract_result (result, rs, 0));
EXITIF (GNUNET_OK !=
TALER_DB_extract_amount (result, 0,
"current_balance_value",
"current_balance_fraction",
"current_balance_currency",
balance));
expiry->abs_value_us = GNUNET_ntohll (expiration_date_nbo);
PQclear (result);
return GNUNET_OK;
EXITIF_exit:
PQclear (result);
return GNUNET_SYSERR;
}

16
src/mint/mint_db.h
View File

@ -169,6 +169,22 @@ struct CollectableBlindcoin
};
/**
* Get the summary of a reserve.
*
* @param db the database connection handle
* @param reserve_pub the public key identifying the reserve
* @param balance the amount existing in the reserve (will be filled)
* @param expiry expiration of the reserve (will be filled)
* @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure
*/
int
TALER_MINT_DB_reserve_get (PGconn *db,
struct GNUNET_CRYPTO_EddsaPublicKey *reserve_pub,
struct TALER_Amount *balance,
struct GNUNET_TIME_Absolute *expiry);
/* FIXME: need call to convert CollectableBlindcoin to JSON (#3527) */