1
|
|
|
<?php |
2
|
|
|
/** |
3
|
|
|
* SLA.php |
4
|
|
|
* |
5
|
|
|
* This program is free software: you can redistribute it and/or modify |
6
|
|
|
* it under the terms of the GNU General Public License as published by |
7
|
|
|
* the Free Software Foundation, either version 3 of the License, or |
8
|
|
|
* (at your option) any later version. |
9
|
|
|
* |
10
|
|
|
* This program is distributed in the hope that it will be useful, |
11
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
12
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the |
13
|
|
|
* GNU General Public License for more details. |
14
|
|
|
* |
15
|
|
|
* You should have received a copy of the GNU General Public License |
16
|
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>. |
17
|
|
|
* |
18
|
|
|
* @link https://www.librenms.org |
19
|
|
|
*/ |
20
|
|
|
|
21
|
|
|
namespace LibreNMS\Modules; |
22
|
|
|
|
23
|
|
|
use App\Models\Sla; |
24
|
|
|
use App\Observers\ModuleModelObserver; |
25
|
|
|
use LibreNMS\DB\SyncsModels; |
26
|
|
|
use LibreNMS\Interfaces\Discovery\SlaDiscovery; |
27
|
|
|
use LibreNMS\Interfaces\Module; |
28
|
|
|
use LibreNMS\Interfaces\Polling\SlaPolling; |
29
|
|
|
use LibreNMS\OS; |
|
|
|
|
30
|
|
|
|
31
|
|
|
class Slas implements Module |
32
|
|
|
{ |
33
|
|
|
use SyncsModels; |
|
|
|
|
34
|
|
|
|
35
|
|
|
/** |
36
|
|
|
* Discover this module. Heavier processes can be run here |
37
|
|
|
* Run infrequently (default 4 times a day) |
38
|
|
|
* |
39
|
|
|
* @param OS $os |
40
|
|
|
*/ |
41
|
|
|
public function discover(OS $os) |
42
|
|
|
{ |
43
|
|
|
if ($os instanceof SlaDiscovery) { |
44
|
|
|
$slas = $os->discoverSlas(); |
45
|
|
|
ModuleModelObserver::observe(Sla::class); |
46
|
|
|
$this->syncModels($os->getDevice(), 'slas', $slas); |
47
|
|
|
} |
48
|
|
|
} |
49
|
|
|
|
50
|
|
|
/** |
51
|
|
|
* Poll data for this module and update the DB / RRD. |
52
|
|
|
* Try to keep this efficient and only run if discovery has indicated there is a reason to run. |
53
|
|
|
* Run frequently (default every 5 minutes) |
54
|
|
|
* |
55
|
|
|
* @param OS $os |
56
|
|
|
*/ |
57
|
|
|
public function poll(OS $os) |
58
|
|
|
{ |
59
|
|
|
if ($os instanceof SlaPolling) { |
60
|
|
|
// Gather our SLA's from the DB. |
61
|
|
|
$slas = $os->getDevice()->slas() |
62
|
|
|
->where('deleted', 0)->get(); |
63
|
|
|
|
64
|
|
|
if ($slas->isNotEmpty()) { |
65
|
|
|
// We have SLA's, lets go!!! |
66
|
|
|
$os->pollSlas($slas); |
67
|
|
|
$os->getDevice()->slas()->saveMany($slas); |
68
|
|
|
} |
69
|
|
|
} |
70
|
|
|
} |
71
|
|
|
|
72
|
|
|
/** |
73
|
|
|
* Remove all DB data for this module. |
74
|
|
|
* This will be run when the module is disabled. |
75
|
|
|
* |
76
|
|
|
* @param OS $os |
77
|
|
|
*/ |
78
|
|
|
public function cleanup(OS $os) |
79
|
|
|
{ |
80
|
|
|
$os->getDevice()->slas()->delete(); |
81
|
|
|
} |
82
|
|
|
} |
83
|
|
|
|
Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: