Class: Quebert::Controller::Beanstalk

Inherits:
Base
  • Object
show all
Includes:
Logging
Defined in:
lib/quebert/controller/beanstalk.rb

Overview

Handle interactions between a job and a Beanstalk queue.

Constant Summary collapse

MAX_TIMEOUT_RETRY_DELAY = 
300
TIMEOUT_RETRY_DELAY_SEED = 
2
TIMEOUT_RETRY_GROWTH_RATE = 
3

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(beanstalk_job) ⇒ Beanstalk

Returns a new instance of Beanstalk.



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# File 'lib/quebert/controller/beanstalk.rb', line 15

def initialize(beanstalk_job)
  @beanstalk_job = beanstalk_job
  @job = Job.from_json(beanstalk_job.body)
rescue Job::Delete
  beanstalk_job.delete
  job_log "Deleted on initialization", :error
rescue Job::Release
  beanstalk_job.release job.priority, job.delay
  job_log "Released on initialization with priority: #{job.priority} and delay: #{job.delay}", :error
rescue Job::Bury
  beanstalk_job.bury
  job_log "Buried on initialization", :error
rescue => e
  beanstalk_job.bury
  job_log "Error caught on initialization. #{e.inspect}", :error
  raise
end

Instance Attribute Details

#beanstalk_job ⇒ Object (readonly)

Returns the value of attribute beanstalk_job.



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# File 'lib/quebert/controller/beanstalk.rb', line 9

def beanstalk_job
  @beanstalk_job
end

#job ⇒ Object (readonly)

Returns the value of attribute job.



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# File 'lib/quebert/controller/beanstalk.rb', line 9

def job
  @job
end

Instance Method Details

#perform ⇒ Object 



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# File 'lib/quebert/controller/beanstalk.rb', line 33

def perform
  job_log "Performing with args #{job.args.inspect}"
  job_log "Beanstalk Job Stats: #{beanstalk_job.stats.inspect}"

  result = false
  time = Benchmark.realtime do
    result = job.perform!
    beanstalk_job.delete
  end

  job_log "Completed in #{(time*1000*1000).to_i/1000.to_f} ms\n"
  result
rescue Job::Delete
  job_log "Deleting job", :error
  beanstalk_job.delete
  job_log "Job deleted", :error
rescue Job::Release
  job_log "Releasing with priority: #{job.priority} and delay: #{job.delay}", :error
  beanstalk_job.release :pri => job.priority, :delay => job.delay
  job_log "Job released", :error
rescue Job::Bury
  job_log "Burrying job", :error
  beanstalk_job.bury
  job_log "Job burried", :error
rescue Job::Timeout => e
  job_log "Job timed out. Retrying with delay. #{e.inspect} #{e.backtrace.join("\n")}", :error
  retry_with_delay
  raise
rescue Job::Retry
  # The difference between the Retry and Timeout class is that
  # Retry does not job_log an exception where as Timeout does
  job_log "Manually retrying with delay"
  retry_with_delay
rescue => e
  job_log "Error caught on perform. Burying job. #{e.inspect} #{e.backtrace.join("\n")}", :error
  beanstalk_job.bury
  job_log "Job buried", :error
  raise
end