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author | Christian Grothoff <christian@grothoff.org> | 2022-12-30 21:28:19 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2022-12-30 21:28:19 +0100 |
commit | b1d9745545ff528729b53312947ba768c336a1d8 (patch) | |
tree | 114bc999f01ac638dc0110167babda305d2fd7cb /src/exchangedb/pg_select_aml_process.c | |
parent | 5754adc414eaca8dcc2de47b6fcc12e9d1979c12 (diff) | |
download | exchange-b1d9745545ff528729b53312947ba768c336a1d8.tar.xz |
-work on new DB queries
Diffstat (limited to 'src/exchangedb/pg_select_aml_process.c')
-rw-r--r-- | src/exchangedb/pg_select_aml_process.c | 132 |
1 files changed, 130 insertions, 2 deletions
diff --git a/src/exchangedb/pg_select_aml_process.c b/src/exchangedb/pg_select_aml_process.c index 9b5dedb39..2105308fc 100644 --- a/src/exchangedb/pg_select_aml_process.c +++ b/src/exchangedb/pg_select_aml_process.c @@ -26,6 +26,87 @@ #include "pg_helper.h" +/** + * Closure for #handle_aml_result. + */ +struct AmlProcessResultContext +{ + /** + * Function to call on each result. + */ + TALER_EXCHANGEDB_AmlStatusCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Set to #GNUNET_SYSERR on serious errors. + */ + enum GNUNET_GenericReturnValue status; +}; + + +/** + * Function to be called with the results of a SELECT statement + * that has returned @a num_results results. Helper function + * for #TEH_PG_select_aml_process(). + * + * @param cls closure of type `struct AmlProcessResultContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +handle_aml_result (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct AmlProcessResultContext *ctx = cls; + struct PostgresClosure *pg = ctx->pg; + + for (unsigned int i = 0; i<num_results; i++) + { + struct TALER_PaytoHashP h_payto; + struct TALER_Amount threshold; + uint64_t rowid; + uint32_t sv; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_uint64 ("aml_status_serial_id", + &rowid), + GNUNET_PQ_result_spec_auto_from_type ("h_payto", + &h_payto), + TALER_PQ_RESULT_SPEC_AMOUNT ("threshold", + &threshold), + GNUNET_PQ_result_spec_uint32 ("status", + &sv), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + ctx->status = GNUNET_SYSERR; + return; + } + ctx->cb (ctx->cb_cls, + rowid, + &h_payto, + &threshold, + (enum TALER_AmlDecisionState) sv); + GNUNET_PQ_cleanup_result (rs); + } +} + + enum GNUNET_DB_QueryStatus TEH_PG_select_aml_process ( void *cls, @@ -35,6 +116,53 @@ TEH_PG_select_aml_process ( TALER_EXCHANGEDB_AmlStatusCallback cb, void *cb_cls) { - GNUNET_break (0); // FIXME: not implemeted! - return GNUNET_DB_STATUS_HARD_ERROR; + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_uint32 (&decision), + GNUNET_PQ_query_param_uint64 (&row_off), + GNUNET_PQ_query_param_end + }; + struct AmlProcessResultContext ctx = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg, + .status = GNUNET_OK + }; + enum GNUNET_DB_QueryStatus qs; + const char *stmt = forward + ? "select_aml_process_inc" + : "select_aml_process_dec"; + + PREPARE (pg, + "select_aml_process_inc", + "SELECT" + " aml_status_serial_id" + ",h_payto" + ",threshold_var" + ",threshold_frac" + ",status" + " FROM aml_status" + " WHERE aml_status_serial_id > $2" + " AND $1 = status & $1" + " ORDER BY aml_status_serial_id INC"); + PREPARE (pg, + "select_aml_process_dec", + "SELECT" + " aml_status_serial_id" + ",h_payto" + ",threshold_var" + ",threshold_frac" + ",status" + " FROM aml_status" + " WHERE aml_status_serial_id < $2" + " AND $1 = status & $1" + " ORDER BY aml_status_serial_id DESC"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + stmt, + params, + &handle_aml_result, + &ctx); + if (GNUNET_OK != ctx.status) + return GNUNET_DB_STATUS_HARD_ERROR; + return qs; } |