Class: Sidekiq::PowerFetch::Heartbeat

Inherits:
Object
  • Object
show all
Defined in:
lib/sidekiq/power_fetch/heartbeat.rb

Constant Summary collapse

LIFESPAN =

seconds

60

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Heartbeat

Returns a new instance of Heartbeat.



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# File 'lib/sidekiq/power_fetch/heartbeat.rb', line 20

def initialize(config)
  raise "#{self.class} already started" if self.class.started?

  @config = config

  # Must pulse on startup, else races: other workers think the current
  # process is dead, but it just didn't heartbeat yet.
  @config.on(:startup) { pulse }
  @config.on(:heartbeat) { pulse }
  self.class.started = true
end

Class Method Details

.key(identity) ⇒ Object 



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# File 'lib/sidekiq/power_fetch/heartbeat.rb', line 32

def self.key(identity)
  id = identity.tr(":", "-")
  "sidekiq-power-fetch-heartbeat-#{id}"
end

.start(config) ⇒ Object 



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# File 'lib/sidekiq/power_fetch/heartbeat.rb', line 8

def self.start(config)
  new(config)
end

.started=(value) ⇒ Object 



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# File 'lib/sidekiq/power_fetch/heartbeat.rb', line 16

def self.started=(value)
  @started = value
end

.started? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sidekiq/power_fetch/heartbeat.rb', line 12

def self.started?
  @started
end

Instance Method Details

#pulse ⇒ Object 



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# File 'lib/sidekiq/power_fetch/heartbeat.rb', line 37

def pulse
  @config.redis do |conn|
    conn.set(key, 1, ex: LIFESPAN)
  end

  @config.logger.debug("[PowerFetch] Heartbeat for #{PowerFetch.identity}")
end