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/*
** Zabbix
** Copyright (C) 2001-2022 Zabbix SIA
**
** This program 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 2 of the License, or
** (at your option) any later version.
**
** This program 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 this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "zbxmocktest.h"
#include "zbxmockdata.h"
#include "zbxmockdb.h"
/* make sure that __wrap_*() prototypes match unwrapped counterparts */
#define zbx_db_vselect __wrap_zbx_db_vselect
#define zbx_db_fetch __wrap_zbx_db_fetch
#define DBfree_result __wrap_DBfree_result
#include "zbxdb.h"
#undef zbx_db_vselect
#undef zbx_db_fetch
#undef DBfree_result
#define __zbx_DBexecute __wrap___zbx_DBexecute
#define DBexecute_multiple_query __wrap_DBexecute_multiple_query
#define DBbegin __wrap_DBbegin
#define DBcommit __wrap_DBcommit
#include "db.h"
#undef __zbx_DBexecute
#undef DBexecute_multiple_query
#undef DBbegin
#undef DBcommit
#define ZBX_MOCK_DB_RESULT_COLUMNS_MAX 128
typedef struct
{
char *data_source;
int num;
}
zbx_mockdb_query_t;
typedef struct
{
zbx_hashset_t queries;
}
zbx_mockdb_t;
static zbx_mockdb_t mockdb;
struct zbx_db_result
{
DB_ROW row;
char *data_source; /* for error messages */
zbx_mock_handle_t rows;
int row_to_fetch; /* for error messages */
int columns; /* to make sure that rows have identical number of columns */
};
DB_RESULT __fwd_zbx_db_select(const char *fmt, ...);
DB_RESULT __wrap_zbx_db_select_n(const char *query, int n);
int __wrap___zbx_DBexecute(const char *fmt, ...);
/* zbx_mockdb_t:queries hashset support */
static zbx_hash_t mockdb_query_hash(const void *data)
{
const zbx_mockdb_query_t *query = (const zbx_mockdb_query_t *)data;
return ZBX_DEFAULT_STRING_HASH_FUNC(query->data_source);
}
static int mockdb_query_compare(const void *d1, const void *d2)
{
const zbx_mockdb_query_t *q1 = (const zbx_mockdb_query_t *)d1;
const zbx_mockdb_query_t *q2 = (const zbx_mockdb_query_t *)d2;
return strcmp(q1->data_source, q2->data_source);
}
static void mockdb_query_clear(void *data)
{
zbx_mockdb_query_t *query = (zbx_mockdb_query_t *)data;
zbx_free(query->data_source);
}
/* <data_source> = <table name> , { "_" , <table name> } */
static char *generate_data_source(const char *sql)
{
int found = 0;
char *data_source = NULL, *ptr_ds;
const char *ptr_sql = sql, *ptr_tmp;
data_source = zbx_calloc(NULL, 64, sizeof(char *));
ptr_ds = data_source;
while ('\0' != *ptr_sql)
{
if (0 != found)
{
if (' ' == *ptr_sql || ';' == *ptr_sql)
{
found = 0;
*(ptr_ds++) = ' ';
}
else
*(ptr_ds++) = *ptr_sql;
ptr_sql++;
}
else if (NULL != (ptr_tmp = strstr(ptr_sql, "from ")))
{
found = 1;
ptr_sql = ptr_tmp + strlen("from ");
}
else if (NULL != (ptr_tmp = strstr(ptr_sql, "join ")))
{
found = 1;
ptr_sql = ptr_tmp + strlen("join ");
}
else
break;
}
if (ptr_ds == data_source)
zbx_free(data_source); /* failed to generate data_source */
else
*(ptr_ds - 1) = '\0';
return data_source;
}
DB_RESULT __wrap_zbx_db_vselect(const char *fmt, va_list args)
{
char *sql = NULL, *data_source = NULL;
zbx_mock_error_t error;
zbx_mock_handle_t rows;
zbx_mockdb_query_t *query, query_local;
DB_RESULT result = NULL;
sql = zbx_dvsprintf(sql, fmt, args);
printf("\tSQL: %s\n", sql);
if (NULL == (query_local.data_source = generate_data_source(sql)))
fail_msg("Cannot generate data source string from SQL query: %s", sql);
zbx_free(sql);
if (NULL == (query = zbx_hashset_search(&mockdb.queries, &query_local)))
{
query_local.num = 1;
query = zbx_hashset_insert(&mockdb.queries, &query_local, sizeof(query_local));
data_source = zbx_strdup(NULL, query->data_source);
}
else
{
query->num++;
zbx_free(query_local.data_source);
data_source = zbx_dsprintf(NULL, "%s (%d)", query->data_source, query->num);
}
if (ZBX_MOCK_SUCCESS != (error = zbx_mock_db_rows(data_source, &rows)))
fail_msg("Cannot find data for data source \"%s\": %s", data_source, zbx_mock_error_string(error));
result = zbx_malloc(result, sizeof(struct zbx_db_result));
result->row = zbx_malloc(NULL, ZBX_MOCK_DB_RESULT_COLUMNS_MAX * sizeof(char *));
result->data_source = data_source;
result->rows = rows;
result->row_to_fetch = 1;
result->columns = -1;
return result;
}
DB_RESULT __fwd_zbx_db_select(const char *fmt, ...)
{
va_list args;
DB_RESULT result;
va_start(args, fmt);
result = __wrap_zbx_db_vselect(fmt, args);
va_end(args);
return result;
}
DB_RESULT __wrap_zbx_db_select_n(const char *query, int n)
{
return __fwd_zbx_db_select("%s limit %d", query, n);
}
DB_ROW __wrap_zbx_db_fetch(DB_RESULT result)
{
zbx_mock_error_t error;
zbx_mock_handle_t row, field;
int column = 0;
if (NULL == result || ZBX_MOCK_END_OF_VECTOR == (error = zbx_mock_vector_element(result->rows, &row)))
return NULL;
if (ZBX_MOCK_SUCCESS != error)
{
fail_msg("Cannot fetch row %d for data source \"%s\": %s", result->row_to_fetch, result->data_source,
zbx_mock_error_string(error));
}
while (ZBX_MOCK_SUCCESS == (error = zbx_mock_vector_element(row, &field)))
{
if (ZBX_MOCK_DB_RESULT_COLUMNS_MAX <= column)
fail_msg("Too many columns for data source \"%s\".", result->data_source);
if (ZBX_MOCK_SUCCESS != (error = zbx_mock_string(field, (const char **)&result->row[column])))
break;
column++;
}
if (ZBX_MOCK_END_OF_VECTOR != error)
{
fail_msg("Cannot get value of column %d, row %d for data source \"%s\": %s", column + 1,
result->row_to_fetch, result->data_source, zbx_mock_error_string(error));
}
if (0 <= result->columns)
{
if (column < result->columns)
{
fail_msg("Too few columns in row %d for data source \"%s\".", result->row_to_fetch,
result->data_source);
}
if (column > result->columns)
{
fail_msg("Too many columns in row %d for data source \"%s\".", result->row_to_fetch,
result->data_source);
}
}
else
result->columns = column;
while (column < ZBX_MOCK_DB_RESULT_COLUMNS_MAX)
result->row[column++] = NULL;
result->row_to_fetch++;
return result->row;
}
void __wrap_DBfree_result(DB_RESULT result)
{
if (NULL != result)
{
zbx_free(result->row);
zbx_free(result->data_source);
}
zbx_free(result);
}
int __wrap___zbx_DBexecute(const char *fmt, ...)
{
ZBX_UNUSED(fmt);
return 0;
}
int __wrap_DBexecute_multiple_query(const char *query, const char *field_name, zbx_vector_uint64_t *ids)
{
ZBX_UNUSED(query);
ZBX_UNUSED(field_name);
ZBX_UNUSED(ids);
return SUCCEED;
}
void __wrap_DBbegin(void)
{
}
int __wrap_DBcommit(void)
{
return ZBX_DB_OK;
}
void zbx_mockdb_init(void)
{
zbx_hashset_create_ext(&mockdb.queries, 0, mockdb_query_hash, mockdb_query_compare, mockdb_query_clear,
ZBX_DEFAULT_MEM_MALLOC_FUNC, ZBX_DEFAULT_MEM_REALLOC_FUNC, ZBX_DEFAULT_MEM_FREE_FUNC);
}
void zbx_mockdb_destroy(void)
{
zbx_hashset_destroy(&mockdb.queries);
}
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