Class: Heimdall::Database

Inherits:
Object show all
Defined in:
lib/heimdall/heimdall_database.rb

Instance Method Summary collapse

Instance Method Details

#add(job_class, opts = {}) ⇒ Object 



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# File 'lib/heimdall/heimdall_database.rb', line 16

def add job_class, opts = {}
  opts = opts.dup
  uid  = nil

  job_cattr = job_class.cattr

  # job unique ID, unique accross all jobs. Genareate complicated SHA1 on many keys?
  # used to define UID on jobs that last long
  # example: PDF generation that last a long time. user hits page refresh multiple times, only one job is added
  # [@uique_id_string, @time_to_be_valid_in_seconds or 0 for inf]
  if (ttl_seconds = (opts.delete(:_unique_for) || job_cattr.unique_for))
    unless ttl_seconds.is_numeric?
      raise ArgumentError, '_ttl argument is not numneric'
    end

    uid = Digest::SHA1.hexdigest((job_class.to_s + opts.to_s).chars.sort.join)

    if db[:tasks].where(uid: uid).where(Sequel.lit('created_at > ?', Time.now - ttl_seconds.to_i.seconds)).first
      Heimdall.logger.info '%s skipped add by TTL check' % job_class
    end
  end

  batch   = opts.delete :_batch
  retries = job_class.cattr.retries.to_i
  retries = 1 if retries < 1

  scheduled_at = opts.delete(:_scheduled_at).to_i

  task = Task.create({
    created_at: Time.now,
    scheduled_at: Time.at(scheduled_at),
    job: job_class.to_s,
    opts: opts.to_json,
    uid: uid,
    batch: batch,
    remaining_runs: retries,
    total_runs: 0,
    status_sid: 'a'
  })

  task.logger 'ADDED - %s' % opts.to_json

  task
end

#available_ids ⇒ Object 



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# File 'lib/heimdall/heimdall_database.rb', line 76

def available_ids
  available_base.select(:id).to_a.map{|el| el[:id] }
end

#db ⇒ Object 



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# File 'lib/heimdall/heimdall_database.rb', line 12

def db
  CONFIG[:db]
end

#pop ⇒ Object 



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# File 'lib/heimdall/heimdall_database.rb', line 61

def pop
  if (task = available_base.first)
    task.total_runs     += 1
    task.update({
      status_sid: 'r',
      started_at: Time.now,
      restart_at: Time.now + task.job_class.cattr.timeout.to_i.seconds,
      finished_at: nil,
      total_runs: task.total_runs
    })

    task
  end
end