Class: ActiveModelCachers::CacheService

Inherits:
Object
  • Object
show all
Defined in:
lib/active_model_cachers/cache_service.rb

Constant Summary collapse

@@column_value_cache = 
ActiveModelCachers::ColumnValueCache.new

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id) ⇒ CacheService

● instance methods



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# File 'lib/active_model_cachers/cache_service.rb', line 74

def initialize(id)
  @id = id
end

Class Attribute Details

.cache_key ⇒ Object

Returns the value of attribute cache_key.



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# File 'lib/active_model_cachers/cache_service.rb', line 9

def cache_key
  @cache_key
end

.query_mapping ⇒ Object

Returns the value of attribute query_mapping.



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# File 'lib/active_model_cachers/cache_service.rb', line 10

def query_mapping
  @query_mapping
end

Class Method Details

.clean_at(id) ⇒ Object 



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# File 'lib/active_model_cachers/cache_service.rb', line 17

def clean_at(id)
  instance(id).clean_cache
end

.define_callback_for_cleaning_cache(class_name, column, foreign_key, with_id, on: nil) ⇒ Object 



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# File 'lib/active_model_cachers/cache_service.rb', line 22

def define_callback_for_cleaning_cache(class_name, column, foreign_key, with_id, on: nil)
  return if @callbacks_defined
  @callbacks_defined = true

  clean = ->(id){ clean_at(with_id ? id : nil) }
  clean_ids = []
  fire_on = Array(on) if on

  ActiveRecord::Extension.global_callbacks.instance_exec do
    on_nullify(class_name) do |nullified_column, get_ids|
      get_ids.call.each{|s| clean.call(s) } if nullified_column == column
    end

    after_touch1(class_name) do
      clean.call(@@column_value_cache.add(self.class, class_name, id, foreign_key, self).call)
    end

    after_touch2(class_name) do
      @@column_value_cache.clean_cache
    end

    after_commit1(class_name) do
      next if fire_on and not transaction_include_any_action?(fire_on)
      changed = column ? previous_changes.key?(column) : previous_changes.present?
       if changed || destroyed?
         clean.call(@@column_value_cache.add(self.class, class_name, id, foreign_key, self).call)
       end
    end

    after_commit2(class_name) do
      @@column_value_cache.clean_cache
    end

    before_delete1(class_name) do |id, model|
      clean_ids << @@column_value_cache.add(self, class_name, id, foreign_key, model)
    end

    before_delete2(class_name) do |_, model|
      clean_ids.each{|s| clean.call(s.call) }
      clean_ids = []
    end

    after_delete(class_name) do
      @@column_value_cache.clean_cache
    end
  end
end

.instance(id) ⇒ Object 



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# File 'lib/active_model_cachers/cache_service.rb', line 12

def instance(id)
  hash = (RequestStore.store[self] ||= {})
  return hash[id] ||= new(id)
end

Instance Method Details

#clean_cache(binding: nil, reflect: nil) ⇒ Object 



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# File 'lib/active_model_cachers/cache_service.rb', line 88

def clean_cache(binding: nil, reflect: nil)
  @cached_data = nil
  Rails.cache.delete(cache_key)
  return nil
end

#get(binding: nil, reflect: nil) ⇒ Object 



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# File 'lib/active_model_cachers/cache_service.rb', line 78

def get(binding: nil, reflect: nil)
  @cached_data ||= fetch_from_cache(binding: binding, reflect: reflect)
  return cache_to_raw_data(@cached_data)
end

#peek(binding: nil, reflect: nil) ⇒ Object 



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# File 'lib/active_model_cachers/cache_service.rb', line 83

def peek(binding: nil, reflect: nil)
  @cached_data ||= get_from_cache
  return cache_to_raw_data(@cached_data)
end