Example of monitoring a ruby background job with New Relic

account.rb

class Account
   include NewRelic::Agent::MethodTracer   

   def check_usage
   end

   def send_invoice
   end

   add_method_tracer :check_usage
   add_method_tracer :send_invoice
end

job.rb

require File.expand_path('../../config/application', __FILE__)
JobsExample::Application.initialize!

require 'optparse'
require_dependency 'script/task_instrumentation'
options = {}
OptionParser.new do |opts|
  opts.banner = "Usage: #{$0} [options]"
  opts.on("-v", "--verbose", "Run with extra logging") { options[:verbose] = true }
end

class Job
   include NewRelic::Agent::Instrumentation::ControllerInstrumentation

   def initialize(options={})
      @verbose = options[:verbose]
   end
 
   def run
     Account.all.each do | account |
        process_account(account)
     end
   end

   private

   def process_account
     account.check_usage
     account.send_invoice
   end

   add_transaction_tracer :process_account,
                          :name => 'process_one_account',   # Change the label from "process_account" to "process_one_account"
                          :category => "OtherTransaction/nightly" # Put in the background tasks under "Nightly"
end

# Start the New Relic agent synchronously
NewRelic::Agent.manual_start :app_name => 'Background Jobs', :transaction_tracer => { :transaction_threshold => 1.5 }

status = Job.new(options).run
exit status