Class: Sidekiq::Queue

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/sidekiq/api.rb

Overview

Represents a queue within Sidekiq. Allows enumeration of all jobs within the queue and deletion of jobs. NB: this queue data is real-time and is changing within Redis moment by moment.

queue = Sidekiq::Queue.new("mailer")
queue.each do |job|
  job.klass # => 'MyWorker'
  job.args # => [1, 2, 3]
  job.delete if job.jid == 'abcdef1234567890'
end

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name = "default") ⇒ Queue

Returns a new instance of Queue.

Parameters:

  • name (String) (defaults to: "default") —

    the name of the queue



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# File 'lib/sidekiq/api.rb', line 250

def initialize(name = "default")
  @name = name.to_s
  @rname = "queue:#{name}"
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/sidekiq/api.rb', line 247

def name
  @name
end

Class Method Details

.all ⇒ Array<Sidekiq::Queue>

Fetch all known queues within Redis.

Returns:



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# File 'lib/sidekiq/api.rb', line 243

def self.all
  Sidekiq.redis { |c| c.sscan("queues").to_a }.sort.map { |q| Sidekiq::Queue.new(q) }
end

Instance Method Details

#clear ⇒ Boolean Also known as: 💣

delete all jobs within this queue

Returns:

  • (Boolean) —

    true



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# File 'lib/sidekiq/api.rb', line 331

def clear
  Sidekiq.redis do |conn|
    conn.multi do |transaction|
      transaction.unlink(@rname)
      transaction.srem("queues", [name])
    end
  end
  true
end

#each ⇒ Object 



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# File 'lib/sidekiq/api.rb', line 295

def each
  initial_size = size
  deleted_size = 0
  page = 0
  page_size = 50

  loop do
    range_start = page * page_size - deleted_size
    range_end = range_start + page_size - 1
    entries = Sidekiq.redis { |conn|
      conn.lrange @rname, range_start, range_end
    }
    break if entries.empty?
    page += 1
    entries.each do |entry|
      yield JobRecord.new(entry, @name)
    end
    deleted_size = initial_size - size
  end
end

#find_job(jid) ⇒ Sidekiq::JobRecord?

Find the job with the given JID within this queue.

This is a *slow, inefficient* operation. Do not use under normal conditions.

Parameters:

  • jid (String) —

    the job_id to look for

Returns:



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# File 'lib/sidekiq/api.rb', line 325

def find_job(jid)
  detect { |j| j.jid == jid }
end

#latency ⇒ Float

Calculates this queue’s latency, the difference in seconds since the oldest job in the queue was enqueued.

Returns:

  • (Float) —

    in seconds



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# File 'lib/sidekiq/api.rb', line 273

def latency
  entry = Sidekiq.redis { |conn|
    conn.lindex(@rname, -1)
  }
  return 0.0 unless entry

  job = Sidekiq.load_json(entry)
  enqueued_at = job["enqueued_at"]
  if enqueued_at
    if enqueued_at.is_a?(Float)
      # old format
      now = Time.now.to_f
      now - enqueued_at
    else
      now = ::Process.clock_gettime(::Process::CLOCK_REALTIME, :millisecond)
      (now - enqueued_at) / 1000.0
    end
  else
    0.0
  end
end

#paused? ⇒ Boolean

Returns if the queue is currently paused.

Returns:

  • (Boolean) —

    if the queue is currently paused



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# File 'lib/sidekiq/api.rb', line 264

def paused?
  false
end

#size ⇒ Integer

The current size of the queue within Redis. This value is real-time and can change between calls.

Returns:

  • (Integer) —

    the size



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# File 'lib/sidekiq/api.rb', line 259

def size
  Sidekiq.redis { |con| con.llen(@rname) }
end