lookup_statistics_amount_by_bucket2.h (3697B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2025 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file src/include/merchant-database/lookup_statistics_amount_by_bucket2.h 18 * @brief implementation of the lookup_statistics_amount_by_bucket2 function for Postgres 19 * @author Christian Grothoff 20 */ 21 #ifndef MERCHANT_DATABASE_LOOKUP_STATISTICS_AMOUNT_BY_BUCKET2_H 22 #define MERCHANT_DATABASE_LOOKUP_STATISTICS_AMOUNT_BY_BUCKET2_H 23 24 #include <taler/taler_util.h> 25 #include <taler/taler_json_lib.h> 26 #include "merchantdb_lib.h" 27 28 29 struct TALER_MERCHANTDB_PostgresContext; 30 /* Callback typedefs */ 31 /** 32 * Returns amount-valued statistics by bucket. 33 * Called by `lookup_statistics_amount_by_bucket`. 34 * 35 * @param cls closure 36 * @param description description of the statistic 37 * @param bucket_start start time of the bucket 38 * @param bucket_end end time of the bucket 39 * @param bucket_range range of the bucket 40 * @param cumulative_amounts_len the length of @a cumulative_amounts 41 * @param cumulative_amounts the cumulative amounts array 42 */ 43 typedef void 44 (*TALER_MERCHANTDB_AmountByBucketStatisticsCallback)( 45 void *cls, 46 const char *description, 47 struct GNUNET_TIME_Timestamp bucket_start, 48 struct GNUNET_TIME_Timestamp bucket_end, 49 const char *bucket_range, 50 unsigned int cumulative_amounts_len, 51 const struct TALER_Amount cumulative_amounts[static cumulative_amounts_len]); 52 53 /** 54 * Returns amount-valued statistics by bucket. 55 * Called by `lookup_statistics_amount_by_bucket2`. 56 * 57 * @param cls closure 58 * @param bucket_start start time of the bucket 59 * @param cumulative_amounts_len the length of @a cumulative_amounts 60 * @param cumulative_amounts the cumulative amounts array 61 */ 62 typedef void 63 (*TALER_MERCHANTDB_AmountByBucketStatisticsCallback2)( 64 void *cls, 65 struct GNUNET_TIME_Timestamp bucket_start, 66 unsigned int cumulative_amounts_len, 67 const struct TALER_Amount cumulative_amounts[static cumulative_amounts_len]); 68 69 /** 70 * Lookup amount statistics for instance and slug by bucket, 71 * restricting to a fixed number of buckets at a given granularity. 72 * 73 * @param pg database context 74 * @param instance_id instance to lookup statistics for 75 * @param slug instance to lookup statistics for 76 * @param granularity limit to buckets of this size 77 * @param counter requested number of buckets 78 * @param cb function to call on all token families found 79 * @param cb_cls closure for @a cb 80 * @return database result code 81 */ 82 enum GNUNET_DB_QueryStatus 83 TALER_MERCHANTDB_lookup_statistics_amount_by_bucket2 (struct TALER_MERCHANTDB_PostgresContext *pg, 84 const char *instance_id, 85 const char *slug, 86 const char *granularity, 87 uint64_t counter, 88 TALER_MERCHANTDB_AmountByBucketStatisticsCallback2 89 cb, 90 void *cb_cls); 91 92 #endif