Class: Cacher::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/zipcoder/cacher/base.rb

Overview

The cacher base class places all of the objects in memory. The abstraction will later allow us to override for MemCacher and Redis implementations

Instance Method Summary collapse

Constructor Details

#initialize(**kwargs) ⇒ Base

endregion



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# File 'lib/zipcoder/cacher/base.rb', line 38

def initialize(**kwargs)
  self._init_cache **kwargs
end

Instance Method Details

#_empty_cache ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 12

def _empty_cache
  @cache.clear
end

#_init_cache(**kwargs) ⇒ Object

region Override These



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# File 'lib/zipcoder/cacher/base.rb', line 8

def _init_cache(**kwargs)
  @cache = {}
end

#_iterate_keys(**kwargs, &block) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 24

def _iterate_keys(**kwargs, &block)
  return if block == nil

  start_with = kwargs[:start_with]

  @cache.keys.each do |key|
    if start_with == nil or key.start_with?(start_with)
      block.call(key)
    end
  end
end

#_read_cache(key) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 20

def _read_cache(key)
  @cache[key]
end

#_write_cache(key, value) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 16

def _write_cache(key, value)
  @cache[key] = value
end

#iterate_cities(&block) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 118

def iterate_cities(&block)
  return if block == nil
  _iterate_keys(start_with: "zipcoder:city") do |key|
    info = _read_cache(key)
    block.call(info) if block != nil
  end
end

#iterate_zips(&block) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 110

def iterate_zips(&block)
  return if block == nil
  _iterate_keys(start_with: "zipcoder:zip") do |key|
    info = _read_cache(key)
    block.call(info) if block != nil
  end
end

#load ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 42

def load
  this_dir = File.expand_path(File.dirname(__FILE__))

  # Load zip cache from file
  zip_data = File.join(this_dir, '..', '..', 'data', 'zip_data.yml')
  zip_codes = YAML.load(File.open(zip_data))

  # Initialize
  _empty_cache
  city_states = {}
  state_lookup = {}

  # Add the zip codes to the cache
  zip_codes.each do |zip, info|
    city = info[:city].capitalize_all
    info[:city] = city
    state = info[:state]

    # Iterate through the zip codes and add them to the zip cache
    _write_cache _zip_cache(zip), info

    # Create the city lookups
    city_state = "#{city.upcase},#{state.upcase}"
    infos = city_states[city_state] || []
    infos << info
    city_states[city_state] = infos
  end

  # Normalize each city and populate the state cache
  city_states.each do |city_state, infos|
    city = infos[0][:city]
    state = infos[0][:state]

    # Populate the City Cache
    normalized = _normalize_city(infos)
    _write_cache _city_cache(city_state), normalized

    # Populate the State Cache
    cities = state_lookup[state] || []
    cities << city
    state_lookup[state] = cities
  end

  # Set the cities cache
  state_lookup.each do |state, cities|
    _write_cache _state_cache(state), cities.sort
  end

  # Set the states cache
  self._write_cache _states, state_lookup.keys.sort
end

#read_city_cache(city_state) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 98

def read_city_cache(city_state)
  _read_cache _city_cache(city_state)
end

#read_state_cache(state) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 102

def read_state_cache(state)
  _read_cache _state_cache(state)
end

#read_states ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 106

def read_states
  _read_cache _states
end

#read_zip_cache(zip) ⇒ Object 



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# File 'lib/zipcoder/cacher/base.rb', line 94

def read_zip_cache(zip)
  _read_cache _zip_cache(zip)
end