sensu-plugins/sensu-plugins-ponymailer

#!/usr/bin/env ruby
#
# Sensu Handler: ponymailer
#
# This handler formats alerts as mails and sends them off to a pre-defined recipient.
#
# Copyright 2012 Panagiotis Papadomitsos <pj@ezgr.net>
#
# Released under the same terms as Sensu (the MIT license); see LICENSE
# for details.

require 'sensu-handler'
require 'timeout'
require 'pony'
require 'date'

class PonyMailer < Sensu::Handler
  STATUSES = {
    0 => 'OK',
    1 => 'WARNING',
    2 => 'CRITICAL'
  }.freeze

  def short_name
    @event['client']['name'] + '/' + @event['check']['name']
  end

  def action_to_string
    @event['action'].eql?('resolve') ? 'RESOLVED' : 'ALERT'
  end

  def handle
    mail_options = {
      subject: "Sensu Monitoring Alert: #{action_to_string} :: #{short_name}",
      from: "#{settings['ponymailer']['fromname']} <#{settings['ponymailer']['from']}>",
      via: :smtp,
      via_options: {
        address: settings['ponymailer']['hostname'],
        port: settings['ponymailer']['port'],
        enable_starttls_auto: settings['ponymailer']['tls']
      },
      charset: 'utf-8',
      sender: settings['ponymailer']['from']
    }
    mail_options[:via_options] = {
      address: settings['ponymailer']['hostname'],
      port: settings['ponymailer']['port'],
      enable_starttls_auto: settings['ponymailer']['tls'],
      user_name: settings['ponymailer']['username'],
      password: settings['ponymailer']['password'],
      authentication: :plain
    } if settings['ponymailer']['authenticate']

    mail_options[:body] = %(Sensu has detected a failed check. Event analysis follows:

Event Timestamp:    #{Time.at(@event['check']['issued'].to_i)}

Check That Failed:  #{@event['check']['name']}
Check Command:      #{@event['check']['command']}
Check Flapping:     #{@event['check']['flapping']}
Check Occurrences:  #{@event['occurrences']}
Check History:      #{@event['check']['history'].map { |h| STATUSES[h.to_i] }.join(' => ')}

Node Name:          #{@event['client']['name']}
Node IP Address:    #{@event['client']['address']}
Node LPOL:          #{Time.at(@event['client']['timestamp'].to_i)}
Node Subscriptions: #{@event['client']['subscriptions'].join(', ')}

====================
=== Check Output ===
====================

#{@event['check']['output']}


)
    Pony.options = mail_options

    # #YELLOW
    unless settings['ponymailer']['recipients'].empty?
      settings['ponymailer']['recipients'].each do |to|
        begin
          Timeout.timeout 10 do
            Pony.mail(to: to)
            puts 'mail -- sent alert for ' + short_name + ' to ' + to
          end
        rescue Timeout::Error
          puts 'mail -- timed out while attempting to ' + @event['action'] + ' an incident -- ' + short_name
        end
      end
    end
  end
end