Class: Makara::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/makara/context.rb

Class Method Summary collapse

Class Method Details

.generate(seed = nil) ⇒ Object 



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# File 'lib/makara/context.rb', line 10

def generate(seed = nil)
  seed ||= "#{Time.now.to_i}#{Thread.current.object_id}#{rand(99999)}"
  Digest::MD5.hexdigest(seed)
end

.get_current ⇒ Object 



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# File 'lib/makara/context.rb', line 24

def get_current
  fetch(:makara_context_current) { generate }
end

.get_previous ⇒ Object 



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# File 'lib/makara/context.rb', line 15

def get_previous
  fetch(:makara_context_previous) { generate }
end

.previously_stuck?(config_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/makara/context.rb', line 32

def previously_stuck?(config_id)
  previously_sticky.fetch(config_id) do
    stuck?(Makara::Context.get_previous, config_id)
  end
end

.set_current(context) ⇒ Object 



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# File 'lib/makara/context.rb', line 28

def set_current(context)
  set(:makara_context_current,context)
end

.set_previous(context) ⇒ Object 



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# File 'lib/makara/context.rb', line 19

def set_previous(context)
  previously_sticky.clear
  set(:makara_context_previous,context)
end

.stick(context, config_id, ttl) ⇒ Object

Called by ‘Proxy#stick_to_master!` to stick subsequent requests to master. They’ll see the current context as their previous context when they’re asking whether they should be stuck to master.



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# File 'lib/makara/context.rb', line 41

def stick(context, config_id, ttl)
  Makara::Cache.write(cache_key_for(context, config_id), '1', ttl)
end

.stuck?(context, config_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/makara/context.rb', line 45

def stuck?(context, config_id)
  !!Makara::Cache.read(cache_key_for(context, config_id))
end