LibreNMS/Alert/Transport/Slack.php
<?php
/* Copyright (C) 2014 Daniel Preussker <f0o@devilcode.org>
* 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 3 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, see <https://www.gnu.org/licenses/>. */
/**
* API Transport
*
* @author f0o <f0o@devilcode.org>
* @copyright 2014 f0o, LibreNMS
* @license GPL
*/
namespace LibreNMS\Alert\Transport;
use Illuminate\Support\Str;
use LibreNMS\Alert\Transport;
use LibreNMS\Exceptions\AlertTransportDeliveryException;
use LibreNMS\Util\Http;
class Slack extends Transport
{
public function deliverAlert(array $alert_data): bool
{
$slack_opts = $this->parseUserOptions($this->config['slack-options'] ?? '');
$icon = $this->config['slack-icon_emoji'] ?? $slack_opts['icon_emoji'] ?? null;
$slack_msg = html_entity_decode(strip_tags($alert_data['msg'] ?? ''), ENT_QUOTES);
/*
* Normalize spaces since you might want to do logic in your template, and Slack is
* very sensitive to spaces. This turns every instance of two or more spaces into
* one space.
*/
$slack_msg = preg_replace('/ {2,}/', ' ', $slack_msg);
/*
* Replace "standard" markdown links with Slack-specific markdown.
* This has to be done after strip_tags() because these are actually tags.
* So [Target](https://mysite.example.com) becomes <https://mysite.example.com|Target>
*/
$slack_msg = preg_replace('/\[([^\]]+)\]\(((https?|mailto|ftp):[^\)]+)\)/', '<$2|$1>', $slack_msg);
$data = [
'attachments' => [
0 => [
'fallback' => $slack_msg,
'color' => self::getColorForState($alert_data['state']),
'title' => $alert_data['title'] ?? null,
'text' => $slack_msg,
'mrkdwn_in' => ['text', 'fallback'],
'author_name' => $this->config['slack-author'] ?? $slack_opts['author'] ?? null,
],
],
'channel' => $this->config['slack-channel'] ?? $slack_opts['channel'] ?? null,
'icon_emoji' => $icon ? Str::finish(Str::start($icon, ':'), ':') : null,
];
$res = Http::client()->post($this->config['slack-url'] ?? '', $data);
if ($res->successful()) {
return true;
}
throw new AlertTransportDeliveryException($alert_data, $res->status(), $res->body(), $slack_msg, $data);
}
public static function configTemplate(): array
{
return [
'config' => [
[
'title' => 'Webhook URL',
'name' => 'slack-url',
'descr' => 'Slack Webhook URL',
'type' => 'text',
],
[
'title' => 'Channel',
'name' => 'slack-channel',
'descr' => 'Channel to post to',
'type' => 'text',
],
[
'title' => 'Author Name',
'name' => 'slack-author',
'descr' => 'Name of author',
'type' => 'text',
'default' => 'LibreNMS',
],
[
'title' => 'Icon',
'name' => 'slack-icon_emoji',
'descr' => 'Name of emoji for icon',
'type' => 'text',
],
],
'validation' => [
'slack-url' => 'required|url',
'slack-channel' => 'string',
'slack-author' => 'string',
'slack-icon_emoji' => 'string',
],
];
}
}