Class: APICache::AbstractStore

Inherits:
Object
  • Object
show all
Defined in:
lib/api_cache/abstract_store.rb

Direct Known Subclasses

DalliStore, MemoryStore, MonetaStore, NullStore

Instance Method Summary collapse

Constructor Details

#initialize ⇒ AbstractStore

Returns a new instance of AbstractStore.



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# File 'lib/api_cache/abstract_store.rb', line 3

def initialize
  raise "Method not implemented. Called abstract class."
end

Instance Method Details

#created_at(key) ⇒ Object

created_at returns the time when the key was last set



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# File 'lib/api_cache/abstract_store.rb', line 28

def created_at(key)
  raise "Method not implemented. Called abstract class."
end

#delete(key) ⇒ Object

Delete the given key. The return value is not used.



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# File 'lib/api_cache/abstract_store.rb', line 18

def delete(key)
  raise "Method not implemented. Called abstract class."
end

#exists?(key) ⇒ Boolean

Does a given key exist in the cache?

Returns:

  • (Boolean) 


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# File 'lib/api_cache/abstract_store.rb', line 23

def exists?(key)
  raise "Method not implemented. Called abstract class."
end

#expired?(key, timeout) ⇒ Boolean

expired? returns true if the given timeout has passed since the key was set. It has nothing to say about the existence or otherwise of said key.

Returns:

  • (Boolean) 


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# File 'lib/api_cache/abstract_store.rb', line 34

def expired?(key, timeout)
  if (created_at = created_at(key))
    Time.now - created_at > timeout
  else
    # If the created_at data is missing assume expired
    true
  end
end

#get(key) ⇒ Object

Get value.



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# File 'lib/api_cache/abstract_store.rb', line 13

def get(key)
  raise "Method not implemented. Called abstract class."
end

#set(key, value) ⇒ Object

Set value. Returns true if success.



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# File 'lib/api_cache/abstract_store.rb', line 8

def set(key, value)
  raise "Method not implemented. Called abstract class."
end