Class: GetTypeHandler

Inherits:
AbstractCommandHandler show all
Defined in:
lib/javonet-ruby-sdk/core/handler/get_type_handler.rb

Instance Method Summary collapse

Methods inherited from AbstractCommandHandler

#handle_command, #iterate

Constructor Details

#initialize ⇒ GetTypeHandler

Returns a new instance of GetTypeHandler.



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# File 'lib/javonet-ruby-sdk/core/handler/get_type_handler.rb', line 8

def initialize
  @required_parameters_count = 1
  @namespace_cache = NamespaceCache.instance
  @type_cache = TypeCache.instance
end

Instance Method Details

#process(command) ⇒ Object 



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# File 'lib/javonet-ruby-sdk/core/handler/get_type_handler.rb', line 14

def process(command)
  raise "#{self.class.name} parameters mismatch!" if command.payload.length < @required_parameters_count

  type_to_return = _get_type_from_payload(command)

  if type_to_return.nil?
    message = "Type #{command.payload[0]} not found.\n"
    message += "\nLoaded libraries:\n"
    loaded_libraries = LoadLibraryHandler.get_loaded_libraries
    # find types in loaded libraries

    loaded_libraries.each do |library|
      message += "#{library}\n"
    end
    raise ArgumentError, message
  end

  if (@namespace_cache.is_namespace_cache_empty? && @type_cache.is_type_cache_empty?) || # both caches are empty

     @namespace_cache.is_type_allowed(type_to_return) || # namespace is allowed

     @type_cache.is_type_allowed(type_to_return)
    # continue - type is allowed

  else
    allowed_namespaces = @namespace_cache.get_cached_namespaces.join(', ')
    allowed_types = @type_cache.get_cached_types.join(', ')
    raise "Type #{type_to_return.name} not allowed. \nAllowed namespaces: #{allowed_namespaces}\nAllowed types: #{allowed_types}"
  end

  type_to_return
rescue NameError => e
  message = e.message
  message += "\nLoaded libraries:\n"
  loaded_libraries = LoadLibraryHandler.get_loaded_libraries
  # find types in loaded libraries

  loaded_libraries.each do |library|
    message += "#{library}\n"
  end
  raise ArgumentError, message
end