Module: ChefApply::CLI::Validation

Included in:
ChefApply::CLI
Defined in:
lib/chef_apply/cli/validation.rb

Constant Summary collapse

PROPERTY_MATCHER = 
/^([a-zA-Z0-9_]+)=(.+)$/.freeze
CB_MATCHER = 
'[\w\-]+'.freeze

Instance Method Summary collapse

Instance Method Details

#properties_from_string(string_props) ⇒ Object

Convert properties in the form k1=v1,k2=v2,kn=vn into a hash, while validating correct form and format



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# File 'lib/chef_apply/cli/validation.rb', line 56

def properties_from_string(string_props)
  properties = {}
  string_props.each do |a|
    key, value = PROPERTY_MATCHER.match(a)[1..-1]
    value = transform_property_value(value)
    properties[key] = value
  end
  properties
end

#transform_property_value(value) ⇒ Object

Incoming properties are always read as a string from the command line. Depending on their type we should transform them so we do not try and pass a string to a resource property that expects an integer or boolean.



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# File 'lib/chef_apply/cli/validation.rb', line 69

def transform_property_value(value)
  case value
  when /^0/
    # when it is a zero leading value like "0777" don't turn
    # it into a number (this is a mode flag)
    value
  when /^\d+$/
    value.to_i
  when /^\d+\.\d*$/, /^\d*\.\d+$/
    value.to_f
  when /^[:].+$/
    value.split(":").last.to_sym
  when /true/i
    true
  when /false/i
    false
  else
    value
  end
end

#validate_params(params) ⇒ Object

The first param is always hostname. Then we either have

  1. A recipe designation

  2. A resource type and resource name followed by any properties



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# File 'lib/chef_apply/cli/validation.rb', line 29

def validate_params(params)
  if params.size < 2
    raise OptionValidationError.new("CHEFVAL002", self)
  end

  if params.size == 2
    # Trying to specify a recipe to run remotely, no properties
    cb = params[1]
    if File.exist?(cb)
      # This is a path specification, and we know it is valid
    elsif cb =~ /^#{CB_MATCHER}$/ || cb =~ /^#{CB_MATCHER}::#{CB_MATCHER}$/
      # They are specifying a cookbook as 'cb_name' or 'cb_name::recipe'
    else
      raise OptionValidationError.new("CHEFVAL004", self, cb)
    end
  elsif params.size >= 3
    properties = params[3..-1]
    properties.each do |property|
      unless property =~ PROPERTY_MATCHER
        raise OptionValidationError.new("CHEFVAL003", self, property)
      end
    end
  end
end