Class: Textus::Background::Worker

Inherits:
Object
  • Object
show all
Defined in:
lib/textus/background/worker.rb

Defined Under Namespace

Classes: Summary

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(queue:, container:, lease_ttl: 60) ⇒ Worker

Returns a new instance of Worker.



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# File 'lib/textus/background/worker.rb', line 11

def initialize(queue:, container:, lease_ttl: 60)
  @queue     = queue
  @container = container
  @lease_ttl = lease_ttl
end

Class Method Details

.for(container:, queue:) ⇒ Object 



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# File 'lib/textus/background/worker.rb', line 6

def self.for(container:, queue:)
  new(queue: queue, container: container,
      lease_ttl: container.manifest.data.worker_config[:lease_ttl])
end

Instance Method Details

#drain(worker_id: "drain-#{Process.pid}") ⇒ Object 



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# File 'lib/textus/background/worker.rb', line 17

def drain(worker_id: "drain-#{Process.pid}")
  completed = 0
  failed    = 0
  loop do
    leased = @queue.lease(worker_id: worker_id, lease_ttl: @lease_ttl)
    break unless leased

    case run_one(leased)
    when :completed     then completed += 1
    when :dead_lettered then failed += 1
    end
  end
  Summary.new(completed: completed, failed: failed)
end

#drain_pool(pool: 4) ⇒ Object 



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# File 'lib/textus/background/worker.rb', line 32

def drain_pool(pool: 4)
  summaries = []
  mutex     = Mutex.new
  threads   = Array.new(pool) do |i|
    Thread.new do
      s = drain(worker_id: "pool-#{Process.pid}-#{i}")
      mutex.synchronize { summaries << s }
    end
  end
  threads.each(&:join)
  Summary.new(completed: summaries.sum(&:completed), failed: summaries.sum(&:failed))
end