CloudRadar - mailq check with Python

To create a custom check for CloudRadar to check you mailq size.

This check allows to create a custom check at CloudRadar to check the mailq size. This is only about the number of mails in the queue. If this exceeds a limit, a warning or an error will be send to CloudRadar.

#!/usr/bin/env python

import requests
import json
import sys
import subprocess

#
# Mailqueue check
#

# Your token of the custom check
token = 'XXXXXXX'

# Name of the custom check. Needs to be created on my.cloduradar.io first!
check = 'mailq'

# URL of cloudradars data hub. No need to change.
url = "https://hub.cloudradar.io/cct/"

# Max numbers of mails in queue before warning
threshold = 4

alerts = []
warnings = []
payload = dict()

p = subprocess.Popen('mailq | grep -c "^[A-F0-9]"', stdout=subprocess.PIPE, shell=True)
(output, err) = p.communicate()

payload[check+'.mailq'] = int(output)

if int(output) > threshold:
  alerts.append("%s mails in queue - ERROR / threshold: %d" % (output, threshold))
if int(output) == threshold:
  warnings.append("%s mails in queue - WARNING" % output)
if len(alerts) > 0:
  # Include alerts that will trigger a message on cloudradar
  payload[check+'.alert'] = ",".join(alerts)
if len(warnings) > 0:
  # Include warnings that will trigger a message on cloudradar
  payload[check+'.warning'] = ",".join(warnings)

headers = { 'X-CustomCheck-Token': token }

response = requests.request("POST", url, data=json.dumps(payload), headers=headers)

if response.status_code != 204:
  sys.stderr.write("Sending data failed. " + response.text + "\n" )
  sys.exit(response.status_code)

print("All data sent.")