Module: Tairu::Configuration

Included in:
Tairu
Defined in:
lib/tairu/configuration.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#cache ⇒ Object

Returns the value of attribute cache.



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# File 'lib/tairu/configuration.rb', line 5

def cache
  @cache
end

#layers ⇒ Object

Returns the value of attribute layers.



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# File 'lib/tairu/configuration.rb', line 5

def layers
  @layers
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/tairu/configuration.rb', line 5

def name
  @name
end

#tilesets ⇒ Object

Returns the value of attribute tilesets.



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# File 'lib/tairu/configuration.rb', line 5

def tilesets
  @tilesets
end

Instance Method Details

#add_layers(layers = {}) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/tairu/configuration.rb', line 31

def add_layers(layers={})
  raise RuntimeError.new('No layers specified') if layers.empty?
  
  layers.each do |k,v|
    unless self.layers.include?(k)
      self.layers[k] = v
      self.tilesets[k] = Tairu::Store::TYPES[v['provider'].downcase].new(k)
    end
  end
end

#config_from_file(file) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/tairu/configuration.rb', line 54

def config_from_file(file)
  file = File.expand_path(file)

  if File.exists?(file)
    data = YAML.load_file(file)
  else
    raise 'Configuration file not found at specified location.'
  end

  raise RuntimeError.new('At least one layer must be specified') unless data['layers']

  configure do |config|
    config.name = data['name']
    config.layers = data['layers']
    config.cache = data['cache']
  end
end

#configure {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/tairu/configuration.rb', line 7

def configure
  yield self
  configure_layers
  configure_cache
  configure_tilesets
end

#configure_cache ⇒ Object 



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# File 'lib/tairu/configuration.rb', line 14

def configure_cache
  if self.cache
    unless self.cache.instance_of? Tairu::Cache
      if self.cache.instance_of? Hash
        if self.cache['type']
          options = self.cache['options'] || nil
          self.cache = start_cache(self.cache['type'], options)
        else
          raise RuntimeError.new('No cache type sepecified')
        end
      end
    end
  else
    self.cache = start_cache
  end
end

#configure_layers ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/tairu/configuration.rb', line 42

def configure_layers
  raise RuntimeError.new('At least one layer must be specified') unless self.layers
end

#configure_tilesets ⇒ Object 



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# File 'lib/tairu/configuration.rb', line 46

def configure_tilesets
  self.tilesets = {}

  self.layers.each do |k,v|
    self.tilesets[k] = Tairu::Store::TYPES[v['provider'].downcase].new(k)
  end
end

#start_cache(cache_type = nil, options = nil) ⇒ Object 



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# File 'lib/tairu/configuration.rb', line 72

def start_cache(cache_type=nil, options=nil)
  if cache_type
    Tairu::Cache::TYPES[cache_type].new(options)
  else
    Tairu::Cache::Memory.new
  end
end