sensu-plugins/sensu-plugins-qmail

#! /usr/bin/env ruby
#
#   check-qmailq
#
# DESCRIPTION:
#   This is a simple check script which checks the number of mails in qmail queue for Sensu,
#   Uses `qmail-qread` binary to find out the mals in queue
#
# OUTPUT:
#   plain text
#
# PLATFORMS:
#   Linux
#
# DEPENDENCIES:
#   gem: sensu-plugin
#   gem: <?>
#
# USAGE:
#   check-qmailq.rb -h host -w warn -c critcal -t type
#   Type can be "local" and "remote"
#
# NOTES:
#   Does it behave differently on specific platforms, specific use cases, etc
#
# LICENSE:
#   Deepak Mohan Dass   <deepakmdass88@gmail.com>
#   Released under the same terms as Sensu (the MIT license); see LICENSE
#   for details.
#

require 'sensu-plugin/check/cli'

#
#
#
class CheckQMAILQ < Sensu::Plugin::Check::CLI
  option :host,
         short: '-h host',
         default: '127.0.0.1'

  option :warn,
         short: '-w warn',
         default: '100'

  option :critical,
         short: '-c critical',
         default: '200'

  option :type,
         short: '-t type',
         default: 'remote'

  def checkq(qtype)
    queue = `/var/qmail/bin/qmail-qread | grep #{qtype} | grep -v done | wc -l`
    queue.to_i
  end

  def run
    msg_ct = checkq(config[:type].to_s)
    if msg_ct >= config[:critical].to_s.to_i
      critical "#{msg_ct} messages in the #{config[:type]} queue"
    elsif msg_ct >= config[:warn].to_s.to_i
      warning "#{msg_ct} messages in the #{config[:type]} queue"
    else
      ok "#{msg_ct} messages in the #{config[:type]} queue"
    end
  end
end