Class: Resque::Plugins::BatchedLogger

Inherits:
Job
  • Object
show all
Defined in:
lib/resque/plugins/batched_logger.rb

Constant Summary collapse

LOG_FILE = 
"log/batched_jobs.log"
@@logger = 
nil

Class Method Summary collapse

Class Method Details

.perform(batch_name) ⇒ Object 



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# File 'lib/resque/plugins/batched_logger.rb', line 19

def self.perform(batch_name)
  begin
    FileUtils.mkdir_p(File.dirname(LOG_FILE))
    FileUtils.touch(LOG_FILE)

    if !batch_to_log?(batch_name)
      logger.puts("No jobs to log for '#{batch_name}'")
    elsif jobs_pending?(batch_name)
      sleep 5                          # Wait 5 seconds
      Resque.enqueue(self, batch_name) # Requeue, to check again
    else
      # Start processing the logs
      # Pull in the info stored in redis
      job_stats = {
        :processing_time => 0,      :longest_processing_time => 0,
        :processed_job_count => 0,  :enqueued_job_count => Resque.redis.get("#{batch_name}:jobcount"),
        :start_time => nil,         :finish_time => nil
      }
      Resque.redis.del("#{batch_name}:jobcount") # Stop any other logging processes picking up the same job
      # lpop pops the first element off the list in redis
      while job = Resque.redis.lpop("batch_stats:#{batch_name}")
        job = decode_job(job) # Decode from string format
        # job => [run_time, start_time, end_time]
        job_stats[:processing_time] += job[0]                                                           # run_time
        job_stats[:longest_processing_time] = job[0] if job[0] > job_stats[:longest_processing_time]
        job_stats[:start_time] ||= job[1]                                                               # start_time
        job_stats[:finish_time] ||= job[2]
        job_stats[:finish_time] = job[2] if job[2] > job_stats[:finish_time]                            # end_time
        job_stats[:processed_job_count] += 1
      end
      Resque.redis.del("batch_stats:#{batch_name}") # Cleanup the array of stats we've just processed (it should be empty now)

      if job_stats[:processed_job_count].zero?
        log_empty_batch(batch_name)
      else
        log_stats(batch_name, job_stats)
      end
    end
  ensure
    logger.close
    @@logger = nil
  end
end

.requeue_all ⇒ Object

Requeue’s all loggers



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# File 'lib/resque/plugins/batched_logger.rb', line 13

def self.requeue_all
  Resque.redis.keys("*:jobcount").each do |key|
    Resque.enqueue(self, key.gsub(":jobcount", ""))
  end
end