diff options
Diffstat (limited to 'src/auditordb/pg_get_auditor_progress.c')
| -rw-r--r-- | src/auditordb/pg_get_auditor_progress.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/auditordb/pg_get_auditor_progress.c b/src/auditordb/pg_get_auditor_progress.c new file mode 100644 index 000000000..3742d2eb6 --- /dev/null +++ b/src/auditordb/pg_get_auditor_progress.c @@ -0,0 +1,178 @@ +/* + This file is part of TALER + Copyright (C) 2024 Taler Systems SA + + TALER is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + TALER is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ +/** + * @file pg_get_auditor_progress.c + * @brief Implementation of get_auditor_progress function + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_error_codes.h" +#include "taler_dbevents.h" +#include "taler_pq_lib.h" +#include "pg_get_auditor_progress.h" +#include "pg_helper.h" + + +/** + * Closure for #auditor_progress_cb(). + */ +struct AuditorProgressContext +{ + + /** + * Where to store results. + */ + uint64_t **dst; + + /** + * Offset in @e dst. + */ + unsigned int off; + + /** + * Length of array at @e dst. + */ + unsigned int len; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Set to true on failure. + */ + bool failure; +}; + + +/** + * Helper function for #TAH_PG_get_auditor_progress(). + * To be called with the results of a SELECT statement + * that has returned @a num_results results. + * + * @param cls closure of type `struct AuditorProgressContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +auditor_progress_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct AuditorProgressContext *ctx = cls; + + GNUNET_assert (num_results <= ctx->len); + for (unsigned int i = 0; i < num_results; i++) + { + bool is_missing = false; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_allow_null ( + GNUNET_PQ_result_spec_uint64 ("progress_offset", + ctx->dst[i]), + &is_missing), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + ctx->failure = true; + return; + } + if (is_missing) + *ctx->dst[i] = 0; + ctx->off++; + } +} + + +enum GNUNET_DB_QueryStatus +TAH_PG_get_auditor_progress (void *cls, + const char *progress_key, + uint64_t *progress_offset, + ...) +{ + struct PostgresClosure *pg = cls; + unsigned int cnt = 1; + va_list ap; + + va_start (ap, + progress_offset); + while (NULL != va_arg (ap, + const char *)) + { + cnt++; + (void) va_arg (ap, + uint64_t *); + } + va_end (ap); + { + const char *keys[cnt]; + uint64_t *dsts[cnt]; + unsigned int off = 1; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_array_ptrs_string (cnt, + keys, + pg->conn), + GNUNET_PQ_query_param_end + }; + struct AuditorProgressContext ctx = { + .dst = dsts, + .len = cnt, + .pg = pg + }; + enum GNUNET_DB_QueryStatus qs; + + keys[0] = progress_key; + dsts[0] = progress_offset; + + va_start (ap, + progress_offset); + while (off < cnt) + { + keys[off] = va_arg (ap, + const char *); + dsts[off] = va_arg (ap, + uint64_t *); + off++; + } + GNUNET_assert (NULL == va_arg (ap, + const char *)); + va_end (ap); + + PREPARE (pg, + "get_auditor_progress", + "SELECT" + " auditor_do_get_auditor_progress AS progress_offset" + " FROM auditor_do_get_auditor_progress " + "($1);"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "get_auditor_progress", + params, + &auditor_progress_cb, + &ctx); + GNUNET_PQ_cleanup_query_params_closures (params); + if (ctx.failure) + return GNUNET_DB_STATUS_HARD_ERROR; + if (qs < 0) + return qs; + return qs; + } +} |