1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
<?php
/*
** Zabbix
** Copyright (C) 2001-2016 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.
**/
/**
* Class to perform low level history related actions.
*/
class CHistoryManager {
/**
* Returns the last $limit history objects for the given items.
*
* @param array $items an array of items with the 'itemid' and 'value_type' properties
* @param int $limit
* @param int $period the maximum period to retrieve data for
*
* @return array an array with items IDs as keys and arrays of history objects as values
*/
public function getLast(array $items, $limit = 1, $period = null) {
$rs = [];
foreach ($items as $item) {
$values = DBfetchArray(DBselect(
'SELECT *'.
' FROM '.self::getTableName($item['value_type']).' h'.
' WHERE h.itemid='.zbx_dbstr($item['itemid']).
($period ? ' AND h.clock>'.(time() - $period) : '').
' ORDER BY h.clock DESC',
$limit
));
if ($values) {
$rs[$item['itemid']] = $values;
}
}
return $rs;
}
/**
* Return the name of the table where the data for the given value type is stored.
*
* @param int $valueType
*
* @return string
*/
public static function getTableName($valueType) {
$tables = [
ITEM_VALUE_TYPE_LOG => 'history_log',
ITEM_VALUE_TYPE_TEXT => 'history_text',
ITEM_VALUE_TYPE_STR => 'history_str',
ITEM_VALUE_TYPE_FLOAT => 'history',
ITEM_VALUE_TYPE_UINT64 => 'history_uint'
];
return $tables[$valueType];
}
}
|
