Class: Inspec::Metadata

Inherits:
Object
  • Object
show all
Defined in:
lib/inspec/metadata.rb

Overview

Extract metadata.rb information A Metadata object may be created and finalized with invalid data. This allows the check CLI command to analyse the issues. Use valid? to determine if the metadata is coherent.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ref, logger = nil) ⇒ Metadata

Returns a new instance of Metadata.



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# File 'lib/inspec/metadata.rb', line 18

def initialize(ref, logger = nil)
  @ref = ref
  @logger = logger || Logger.new(nil)
  @content = ''
  @params = {}
  @missing_methods = []
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sth, *args) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 115

def method_missing(sth, *args)
  @logger.warn "#{ref} doesn't support: #{sth} #{args}"
  @missing_methods.push(sth)
end

Instance Attribute Details

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/inspec/metadata.rb', line 17

def content
  @content
end

#params ⇒ Object

Returns the value of attribute params.



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# File 'lib/inspec/metadata.rb', line 17

def params
  @params
end

#ref ⇒ Object (readonly)

Returns the value of attribute ref.



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# File 'lib/inspec/metadata.rb', line 16

def ref
  @ref
end

Class Method Details

.finalize(metadata, profile_id, options, logger = nil) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 186

def self.finalize(metadata, profile_id, options, logger = nil)
  return nil if metadata.nil?
  param = metadata.params || {}
  options ||= {}
  param['version'] = param['version'].to_s unless param['version'].nil?
  metadata.params = symbolize_keys(param)
  metadata.params[:supports] = finalize_supports(metadata.params[:supports], logger)
  finalize_name(metadata, profile_id, options[:target])

  metadata
end

.finalize_name(metadata, profile_id, original_target) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 165

def self.finalize_name(metadata, profile_id, original_target)
  # profile_id always overwrites whatever already exists as the name
  unless profile_id.to_s.empty?
    metadata.params[:name] = profile_id.to_s
    return
  end

  # don't overwrite an existing name
  return unless metadata.params[:name].nil?

  # if there's a title, there is no need to set a name too
  return unless metadata.params[:title].nil?

  # create a new name based on the original target if it exists
  # Crudely slug the target to not contain slashes, to avoid breaking
  # unit tests that look for warning sequences
  return if original_target.to_s.empty?
  metadata.params[:title] = "tests from #{original_target}"
  metadata.params[:name] = metadata.params[:title].gsub(%r{[\/\\]}, '.')
end

.finalize_supports(supports, logger) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 157

def self.finalize_supports(supports, logger)
  case x = supports
  when Hash   then [finalize_supports_elem(x, logger)]
  when Array  then x.map { |e| finalize_supports_elem(e, logger) }.compact
  when nil    then []
  end
end

.finalize_supports_elem(elem, logger) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 135

def self.finalize_supports_elem(elem, logger)
  case x = elem
  when Hash
    x[:release] = x[:release].to_s if x[:release]
    x
  when Array
    logger.warn(
      'Failed to read supports entry that is an array. Please use '\
      'the `supports: {os-family: xyz}` syntax.',
    )
    nil
  when nil then nil
  else
    logger ||= Logger.new(nil)
    logger.warn(
      "Do not use deprecated `supports: #{x}` syntax. Instead use:\n"\
      "supports:\n  - os-family: #{x}\n\n",
    )
    { :'os-family' => x } # rubocop:disable Style/HashSyntax
  end
end

.from_file(path, profile_id, logger = nil) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 228

def self.from_file(path, profile_id, logger = nil)
  unless File.file?(path)
    logger ||= Logger.new(nil)
    logger.error "Can't find metadata file #{path}"
    return nil
  end

  from_ref(File.basename(path), File.read(path), profile_id, logger)
end

.from_ref(ref, content, profile_id, logger = nil) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 213

def self.from_ref(ref, content, profile_id, logger = nil)
  # NOTE there doesn't have to exist an actual file, it may come from an
  # archive (i.e., content)
  case File.basename(ref)
  when 'inspec.yml'
    from_yaml(ref, content, profile_id, logger)
  when 'metadata.rb'
    from_ruby(ref, content, profile_id, logger)
  else
    logger ||= Logger.new(nil)
    logger.error "Don't know how to handle metadata in #{ref}"
    nil
  end
end

.from_ruby(ref, content, profile_id, logger = nil) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 206

def self.from_ruby(ref, content, profile_id, logger = nil)
  res = Metadata.new(ref, logger)
  res.instance_eval(content, ref, 1)
  res.content = content
  finalize(res, profile_id, {}, logger)
end

.from_yaml(ref, content, profile_id, logger = nil) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 198

def self.from_yaml(ref, content, profile_id, logger = nil)
  res = Metadata.new(ref, logger)
  require 'erb'
  res.params = YAML.load(ERB.new(content).result)
  res.content = content
  finalize(res, profile_id, {}, logger)
end

.symbolize_keys(obj) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 124

def self.symbolize_keys(obj)
  return obj.map { |i| symbolize_keys(i) } if obj.is_a?(Array)
  return obj unless obj.is_a?(Hash)

  obj.each_with_object({}) do |(k, v), h|
    v = symbolize_keys(v) if v.is_a?(Hash)
    v = symbolize_keys(v) if v.is_a?(Array)
    h[k.to_sym] = v
  end
end

Instance Method Details

#dependencies ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 44

def dependencies
  params[:depends] || []
end

#inspec_requirement ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 54

def inspec_requirement
  # using Gem::Requirement here to allow nil values which
  # translate to [">= 0"]
  Gem::Requirement.create(params[:inspec_version])
end

#supports(sth, version = nil) ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 48

def supports(sth, version = nil)
  # Ignore supports with metadata.rb. This file is legacy and the way it
  # it handles `supports` deprecated. A deprecation warning will be printed
  # already.
end

#supports_platform?(backend) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/inspec/metadata.rb', line 65

def supports_platform?(backend)
  backend.platform.supported?(params[:supports])
end

#supports_runtime? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/inspec/metadata.rb', line 60

def supports_runtime?
  running = Gem::Version.new(Inspec::VERSION)
  inspec_requirement.satisfied_by?(running)
end

#unsupported ⇒ Object 



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# File 'lib/inspec/metadata.rb', line 120

def unsupported
  @missing_methods
end

#valid ⇒ Object

return all warn and errors



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# File 'lib/inspec/metadata.rb', line 70

def valid # rubocop:disable Metrics/AbcSize
  errors = []
  warnings = []

  %w{name version}.each do |field|
    next unless params[field.to_sym].nil?
    errors.push("Missing profile #{field} in #{ref}")
  end

  if %r{[\/\\]} =~ params[:name]
    errors.push("The profile name (#{params[:name]}) contains a slash" \
                  ' which is not permitted. Please remove all slashes from `inspec.yml`.')
  end

  # if version is set, ensure it is correct
  if !params[:version].nil? && !valid_version?(params[:version])
    errors.push('Version needs to be in SemVer format')
  end

  %w{title summary maintainer copyright license}.each do |field|
    next unless params[field.to_sym].nil?
    warnings.push("Missing profile #{field} in #{ref}")
  end

  # if version is set, ensure it is in SPDX format
  if !params[:license].nil? && !Spdx.valid_license?(params[:license])
    warnings.push("License '#{params[:license]}' needs to be in SPDX format. See https://spdx.org/licenses/.")
  end

  [errors, warnings]
end

#valid? ⇒ Boolean

returns true or false

Returns:

  • (Boolean) 


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# File 'lib/inspec/metadata.rb', line 103

def valid?
  errors, _warnings = valid
  errors.empty? && unsupported.empty?
end

#valid_version?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/inspec/metadata.rb', line 108

def valid_version?(value)
  Semverse::Version.new(value)
  true
rescue Semverse::InvalidVersionFormat
  false
end