pg_begin_revolving_shard.h (1928B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 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 exchangedb/pg_begin_revolving_shard.h 18 * @brief implementation of the begin_revolving_shard function for Postgres 19 * @author Christian Grothoff 20 */ 21 #ifndef PG_BEGIN_REVOLVING_SHARD_H 22 #define PG_BEGIN_REVOLVING_SHARD_H 23 24 #include "taler/taler_util.h" 25 #include "taler/taler_json_lib.h" 26 #include "taler/taler_exchangedb_plugin.h" 27 28 29 /** 30 * Function called to grab a revolving work shard on an operation @a op. Runs 31 * in its own transaction. Returns the oldest inactive shard. 32 * 33 * @param cls the @e cls of this struct with the plugin-specific state 34 * @param job_name name of the operation to grab a revolving shard for 35 * @param shard_size desired shard size 36 * @param shard_limit exclusive end of the shard range 37 * @param[out] start_row inclusive start row of the shard (returned) 38 * @param[out] end_row inclusive end row of the shard (returned) 39 * @return transaction status code 40 */ 41 enum GNUNET_DB_QueryStatus 42 TEH_PG_begin_revolving_shard (void *cls, 43 const char *job_name, 44 uint32_t shard_size, 45 uint32_t shard_limit, 46 uint32_t *start_row, 47 uint32_t *end_row); 48 49 #endif