Class: Cardiac::ResourceCache

Inherits:
Object
  • Object
show all
Defined in:
lib/cardiac/resource/cache.rb

Defined Under Namespace

Modules: ClassMethods, InstanceMethods Classes: Middleware

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ResourceCache

Returns a new instance of ResourceCache.



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# File 'lib/cardiac/resource/cache.rb', line 121

def initialize
  @resource_cache         = Hash.new { |h,url| h[url] = {} }
  @resource_cache_enabled = false
end

Class Method Details

.configured? ⇒ Boolean

Until the load hooks run, we do without a resource cache.

Returns:

  • (Boolean) 


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# File 'lib/cardiac/resource/cache.rb', line 132

def self.configured?
end

Instance Method Details

#cache ⇒ Object

Enable the resource cache within the block.



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# File 'lib/cardiac/resource/cache.rb', line 12

def cache
  old, @resource_cache_enabled = @resource_cache_enabled, true
  yield
ensure
  clear_resource_cache
  @resource_cache_enabled = old
end

#clear_resource_cache ⇒ Object 



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# File 'lib/cardiac/resource/cache.rb', line 36

def clear_resource_cache
  @resource_cache.clear
end

#configured? ⇒ Boolean

Checks if the resource cache has been initialized.

Returns:

  • (Boolean) 


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# File 'lib/cardiac/resource/cache.rb', line 127

def configured?
  ! @resource_cache.nil?
end

#disable_resource_cache! ⇒ Object 



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# File 'lib/cardiac/resource/cache.rb', line 24

def disable_resource_cache!
  @resource_cache_enabled = false
end

#enable_resource_cache! ⇒ Object 



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# File 'lib/cardiac/resource/cache.rb', line 20

def enable_resource_cache!
  @resource_cache_enabled = true
end

#resource_cache_enabled?(verb = nil) ⇒ Boolean

Checks if the resource cache is currently enabled and, optionally, if it applies to the given verb.

Returns:

  • (Boolean) 


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# File 'lib/cardiac/resource/cache.rb', line 7

def resource_cache_enabled?(verb=nil)
  @resource_cache_enabled && case verb when NilClass, 'GET', 'HEAD' then true end
end

#uncached ⇒ Object

Disable the resource cache within the block.



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# File 'lib/cardiac/resource/cache.rb', line 29

def uncached
  old, @resource_cache_enabled = @resource_cache_enabled, false
  yield
ensure
  @resource_cache_enabled = old
end