slack notifier for nagios/shinken in bash

commands.cfg

define command {
  command_name  notify_host_by_slack
  command_line  $NAGIOSPLUGINSDIR$/post_to_slack.sh host $HOSTSTATE$ $NOTIFICATIONTYPE$ $HOSTNAME$ nil "$HOSTOUTPUT$" $CONTACT_PAGER$ 
}

define command {
  command_name  notify_service_by_slack
  command_line  $NAGIOSPLUGINSDIR$/post_to_slack.sh service $SERVICESTATE$ $NOTIFICATIONTYPE$ $HOSTNAME$ "$SERVICEDESC$" "$SERVICEOUTPUT$" $CONTACTPAGER$
}

contacts.cfg

define contact {
  contact_name                   slack
  alias                          slack
  pager                          https://hooks.slack.com/services/<webhook-id>
  notificationways               slack
}

notificationways.cfg

define notificationway{
     notificationway_name            slack
     service_notification_period     24x7
     host_notification_period        24x7
     service_notification_options    w,u,c,r,f
     host_notification_options       d,u,r,f,s
     service_notification_commands   notify_service_by_slack
     host_notification_commands      notify_host_by_slack
}

post_to_slack.sh

#!/bin/bash

TYPE="$1"
STATE="$2"
NOTIFICATION="$3"
HOST="$4"
DESC="$5"
OUTPUT="$6"

SLACK_URL="$7"

case "$STATE" in
 OK)
   SLACK_ICON=':smile_cat:'
   ;;
 UP)
   SLACK_ICON=':sunglasses:'
   ;;
 DOWN)
   SLACK_ICON=':fire:'
   ;;
 UNKNOWN)
   SLACK_ICON=':scream_cat:'
   ;;
 WARNING)
   SLACK_ICON=':crying_cat_face:'
   ;;
 CRITICAL)
   SLACK_ICON=':skull:'
   ;;
 *)
   SLACK_ICON=':robot_face:'
   ;;
esac

INFO="\`${OUTPUT}\`"

case "$NOTIFICATION" in
 ACKNOWLEDGEMENT)
   SLACK_ICON=':thumbsup:'
   STATE='ACKNOWLEDGED'  
   INFO=
   ;;
 RECOVERY)
   SLACK_ICON=':thumbsup:'
   STATE='RECOVERED'  
   ;;
esac

case "$TYPE" in 
 host)
   SLACK_MESSAGE="${STATE} HOST *_${HOST}_* ${INFO}"
   ;;
 service)
   SLACK_MESSAGE="${STATE} *${DESC}* on *_${HOST}_* ${INFO}"
   ;;
esac

echo $SLACK_MESSAGE

curl -X POST --data "payload={\"text\": \"${SLACK_ICON} ${SLACK_MESSAGE}\"}" ${SLACK_URL}

exit 0