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/*
This file is part of GNUnet
Copyright (C) 2017 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet 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
Affero General Public License for more details.
*/
/**
* @file pq/pq_exec.c
* @brief functions to execute plain SQL statements (PostGres)
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_pq_lib.h"
/**
* Create a `struct GNUNET_PQ_ExecuteStatement` where errors are fatal.
*
* @param sql actual SQL statement
* @return initialized struct
*/
struct GNUNET_PQ_ExecuteStatement
GNUNET_PQ_make_execute (const char *sql)
{
struct GNUNET_PQ_ExecuteStatement es = {
.sql = sql,
.ignore_errors = GNUNET_NO
};
return es;
}
/**
* Create a `struct GNUNET_PQ_ExecuteStatement` where errors should
* be tolerated.
*
* @param sql actual SQL statement
* @return initialized struct
*/
struct GNUNET_PQ_ExecuteStatement
GNUNET_PQ_make_try_execute (const char *sql)
{
struct GNUNET_PQ_ExecuteStatement es = {
.sql = sql,
.ignore_errors = GNUNET_YES
};
return es;
}
/**
* Request execution of an array of statements @a es from Postgres.
*
* @param connection connection to execute the statements over
* @param es #GNUNET_PQ_PREPARED_STATEMENT_END-terminated array of prepared
* statements.
* @return #GNUNET_OK on success (modulo statements where errors can be ignored)
* #GNUNET_SYSERR on error
*/
int
GNUNET_PQ_exec_statements (PGconn *connection,
const struct GNUNET_PQ_ExecuteStatement *es)
{
for (unsigned int i=0; NULL != es[i].sql; i++)
{
PGresult *result;
result = PQexec (connection,
es[i].sql);
if ( (GNUNET_NO == es[i].ignore_errors) &&
(PGRES_COMMAND_OK != PQresultStatus (result)) )
{
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
"pq",
"Failed to execute `%s': %s/%s/%s/%s/%s",
es[i].sql,
PQresultErrorField (result,
PG_DIAG_MESSAGE_PRIMARY),
PQresultErrorField (result,
PG_DIAG_MESSAGE_DETAIL),
PQresultErrorMessage (result),
PQresStatus (PQresultStatus (result)),
PQerrorMessage (connection));
PQclear (result);
return GNUNET_SYSERR;
}
PQclear (result);
}
return GNUNET_OK;
}
/* end of pq/pq_exec.c */
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