slack-notification

#!/usr/bin/perl

use strict;
use warnings;
use WebService::Slack::WebApi;
use Env;
use Config::IniFiles;
use Switch;


#    "NOTIFICATIONTYPE" = "$notification.type$"
#    "SERVICEDESC" = "$service.name$"
#    "HOSTALIAS" = "$host.display_name$",
#    "HOSTNAME" = "$host.name$",
#    "HOSTADDRESS" = "$address$",
#    "SERVICESTATE" = "$service.state$",
#    "LONGDATETIME" = "$icinga.long_date_time$",
#    "SERVICEOUTPUT" = "$service.output$",
#    "NOTIFICATIONAUTHORNAME" = "$notification.author$",
#    "NOTIFICATIONCOMMENT" = "$notification.comment$",
#    "HOSTDISPLAYNAME" = "$host.display_name$",
#    "SERVICEDISPLAYNAME" = "$service.display_name$",

# this uses the webapi. use https://api.slack.com/web to get a token

my $cfg_file = shift;
if (! -f $cfg_file) {
    print STDERR "No configuration given or file not found.\nUsage: slack-notification <config.ini>\n";
    exit 1;
}

my $cfg = Config::IniFiles->new( -file => $cfg_file );

if (! defined($cfg->val('Authentication', 'Token'))) {
    print STDERR "Token not defined in configfile";
    exit 1;
}

my $servicestate = $ENV{SERVICESTATE};

my $icon = '';
switch ($servicestate) {
    case "CRITICAL" { 
        $icon = defined($cfg->val('Format', 'CRITICAL')) ? 
            $cfg->val('Format', 'CRITICAL') : ''; }
    case "WARNING" {
        $icon = defined($cfg->val('Format', 'WARNING')) ?
            $cfg->val('Format', 'WARNING') : ''; }
    case "OK" {
        $icon = defined($cfg->val('Format', 'OK')) ?
            $cfg->val('Format', 'WARNING') : ''; }
    case "UNKNOWN" {
        $icon = defined($cfg->val('Format', 'UNKNOWN')) ?
            $cfg->val('Format', 'WARNING') : ''; }

}

my $icinga_hostname = $cfg->val('General', 'WebHostname');

my $slack = WebService::Slack::WebApi->new(token => $cfg->val('Authentication', 'Token'));

my $posted_message = $slack->chat->post_message(
    channel => $cfg->val('General', 'Channel') || '#general',
    text => sprintf (
    '%s HOST: <http://%s/icingaweb2/monitoring/host/services?host=%s|%s>   SERVICE: <http://%s/icingaweb2/monitoring/service/show?host=%s&service=%s|%s>  STATE: %s',
    $icon,
    $icinga_hostname,
    $ENV{HOSTNAME},
    $ENV{HOSTALIAS},
    $icinga_hostname,
    $ENV{HOSTNAME},
    $ENV{SERVICEDESC},
    $ENV{SERVICEDISPLAYNAME},
    $servicestate ),
    username => 'icinga'
);