Class: Justifi::InMemoryCache

Inherits:
Object
  • Object
show all
Defined in:
lib/justifi/in_memory_cache.rb

Constant Summary collapse

HALF_DAY_IN_SECONDS = 
43200

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ InMemoryCache

Returns a new instance of InMemoryCache.



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# File 'lib/justifi/in_memory_cache.rb', line 7

def initialize
  @data = {}
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/justifi/in_memory_cache.rb', line 3

def data
  @data
end

Instance Method Details

#clear_cache ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 50

def clear_cache
  @data = {}
end

#expirable_value(value, expiration) ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 28

def expirable_value(value, expiration)
  {value: value, expiration: expiration}
end

#expire_key!(key) ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 46

def expire_key!(key)
  @data.delete(key.to_s)
end

#expired?(expiration) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/justifi/in_memory_cache.rb', line 42

def expired?(expiration)
  !expiration.nil? && Time.now > expiration
end

#get(key) ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 32

def get(key)
  expire_key!(key) if expired?(@data[key.to_s]&.fetch(:expiration))
  @data[key.to_s]&.fetch(:value)
end

#get_expiration(key) ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 37

def get_expiration(key)
  expire_key!(key) if expired?(@data[key.to_s]&.fetch(:expiration))
  @data[key.to_s]&.fetch(:expiration)
end

#init(data) ⇒ Object

preload data into the cache



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# File 'lib/justifi/in_memory_cache.rb', line 12

def init(data)
  data.map do |key, value|
    set(key, value)
  end
end

#set(key, value, expiration: nil) ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 18

def set(key, value, expiration: nil)
  expiration ||= Time.now + HALF_DAY_IN_SECONDS
  @data[key.to_s] = expirable_value(value, expiration)
end

#set_and_return(key, value, expiration: nil) ⇒ Object 



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# File 'lib/justifi/in_memory_cache.rb', line 23

def set_and_return(key, value, expiration: nil)
  set(key, value, expiration: expiration)
  value
end