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+/*
+ This file is part of TALER
+ Copyright (C) 2022 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 exchangedb/pg_begin_shard.h
+ * @brief implementation of the begin_shard function for Postgres
+ * @author Christian Grothoff
+ */
+#ifndef PG_BEGIN_SHARD_H
+#define PG_BEGIN_SHARD_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+/**
+ * Function called to grab a work shard on an operation @a op. Runs in its
+ * own transaction.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param job_name name of the operation to grab a word shard for
+ * @param delay minimum age of a shard to grab
+ * @param shard_size desired shard size
+ * @param[out] start_row inclusive start row of the shard (returned)
+ * @param[out] end_row exclusive end row of the shard (returned)
+ * @return transaction status code
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_begin_shard (void *cls,
+ const char *job_name,
+ struct GNUNET_TIME_Relative delay,
+ uint64_t shard_size,
+ uint64_t *start_row,
+ uint64_t *end_row);
+
+#endif