Module: Ant::Nanoservice::MetaTypes

Extended by:
DRY::ResourceInjector, Storage::Exceptions
Defined in:
lib/ant/nanoservice/metatypes.rb

Overview

This module is a factory of types. This will provide a class from the configurations, attaching all the validations requested. Currently it only plugs the validations and the repository inside the factory so you can start using them on your code

Class Method Summary collapse

Class Method Details

.build(name, fields, _configs) ⇒ Object 



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# File 'lib/ant/nanoservice/metatypes.rb', line 63

def build(name, fields, _configs)
  validations = validation_builder(fields)
  klass = Class.new(Ant::Storage::Datasource::Model)
  build_constructor(klass)
  build_validation_errors_method(klass)
  class_name = name.split('_').collect(&:capitalize).join
  MetaTypes.const_set(class_name, klass)
  klass.const_set('VALIDATIONS', validations)
  klass.const_set('NAME', name)
  klass.const_set('PRIMARY_KEY', primary_keys(fields))
  klass
end

.build_constructor(klass) ⇒ Object 



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# File 'lib/ant/nanoservice/metatypes.rb', line 25

def build_constructor(klass)
  klass.define_method :initialize do |data|
    @data = {}
    data.each do |key, val|
      case key
      when Symbol
        @data[key] = val if self.class::VALIDATIONS.key?(key)
      when String
        if self.class::VALIDATIONS.keys.map(&:to_s).include?(key)
          @data[key.to_sym] = val
        end
      end
    end
  end
end

.build_validation_errors_method(klass) ⇒ Object 



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# File 'lib/ant/nanoservice/metatypes.rb', line 41

def build_validation_errors_method(klass)
  klass.define_method :validation_errors do
    result = {}
    self.class::VALIDATIONS.each do |key, validation|
      problems = validation.map { |val| val.call(@data[key]) }.compact
      result[key] = problems unless problems.empty?
    end
    result
  end
  klass.define_method :run_validations! do
    errors = validation_errors
    raise ValidationErrors, errors unless errors.empty?
  end
end

.primary_keys(fields) ⇒ Object 



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# File 'lib/ant/nanoservice/metatypes.rb', line 56

def primary_keys(fields)
  fields.select { |_, conf| conf['keys'] && conf['keys']['primary'] }
        .keys
        .first
        &.to_sym
end

.validation_builder(fields) ⇒ Object 



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# File 'lib/ant/nanoservice/metatypes.rb', line 17

def validation_builder(fields)
  fields.each_with_object({}) do |(field, plugins), obj|
    obj[field.to_sym] = plugins.map do |plug, conf|
      Validator.validator(plug).curry.call(conf)
    end
  end
end