Class: QueuePulse::Checks::QueueLatency

Inherits:
Base
  • Object
show all
Defined in:
lib/queue_pulse/checks/queue_latency.rb

Overview

Alerts when the oldest ready job in a queue has been waiting longer than queue_latency_threshold — i.e. work is backing up before users feel it. Cooldown is per-queue. (Requirements US-3.1, US-3.3, US-3.4.)

Instance Method Summary collapse

Methods inherited from Base

#initialize

Constructor Details

This class inherits a constructor from QueuePulse::Checks::Base

Instance Method Details

#call ⇒ Object 



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# File 'lib/queue_pulse/checks/queue_latency.rb', line 9

def call
  threshold = config.queue_latency_threshold
  now = source.now

  source.queue_stats.filter_map do |stat|
    next unless stat.oldest_enqueued_at

    latency = (now - stat.oldest_enqueued_at).to_i
    next if latency < threshold

    with_cooldown("queue_latency:#{stat.queue_name}") do
      latency_alert(stat, latency)
    end
  end
end