Class: OctocatalogDiff::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/octocatalog-diff/cli.rb,
lib/octocatalog-diff/cli/diffs.rb,
lib/octocatalog-diff/cli/options.rb,
lib/octocatalog-diff/cli/printer.rb

Overview

This is the CLI for catalog-diff. It’s responsible for parsing the command line arguments and then handing off to appropriate methods to perform the catalog-diff.

Defined Under Namespace

Classes: Diffs, Options, Printer

Constant Summary collapse

VERSION =

Version number

OctocatalogDiff::Version::VERSION
EXITCODE_SUCCESS_NO_DIFFS =

Exit codes

0
EXITCODE_FAILURE = 
1
EXITCODE_SUCCESS_WITH_DIFFS = 
2
DEFAULT_IGNORES =

The default type+title+attribute to ignore in catalog-diff.

[
  { type: 'Class' } # Don't care about classes themselves, only what they actually do!
].freeze
DEFAULT_OPTIONS =

The default options.

{
  from_env: 'origin/master',
  to_env: '.',
  colors: true,
  debug: false,
  quiet: false,
  format: :color_text,
  display_source_file_line: false,
  compare_file_text: true,
  display_datatype_changes: true,
  parallel: true,
  suppress_absent_file_details: true,
  hiera_path: 'hieradata'
}.freeze

Class Method Summary collapse

Class Method Details

.bootstrap_then_exit(logger, catalogs_obj) ⇒ Object

–bootstrap-then-exit command



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# File 'lib/octocatalog-diff/cli.rb', line 187

def self.bootstrap_then_exit(logger, catalogs_obj)
  catalogs_obj.bootstrap_then_exit
  return EXITCODE_SUCCESS_NO_DIFFS
rescue OctocatalogDiff::Errors::BootstrapError => exc
  logger.fatal("--bootstrap-then-exit error: bootstrap failed (#{exc})")
  return EXITCODE_FAILURE
end

.catalog_only(logger, options) ⇒ Object

Compile the catalog only



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# File 'lib/octocatalog-diff/cli.rb', line 168

def self.catalog_only(logger, options)
  opts = options.merge(logger: logger)
  to_catalog = OctocatalogDiff::API::V1.catalog(opts)

  # If the catalog compilation failed, an exception would have been thrown. So if
  # we get here, the catalog succeeded. Dump the catalog to the appropriate place
  # and exit successfully.
  if options[:output_file]
    File.open(options[:output_file], 'w') { |f| f.write(to_catalog.to_json) }
    logger.info "Wrote catalog to #{options[:output_file]}"
  else
    puts to_catalog.to_json
  end

  return { exitcode: EXITCODE_SUCCESS_NO_DIFFS, to: to_catalog } if options[:INTEGRATION] # For integration testing
  EXITCODE_SUCCESS_NO_DIFFS
end

.cli(argv = ARGV, logger = Logger.new(STDERR), opts = {}) ⇒ Integer

This method is the one to call externally. It is possible to specify alternate command line arguments, for testing.

Parameters:

  • argv (Array) (defaults to: ARGV) —

    Use specified arguments (defaults to ARGV)

  • logger (Logger) (defaults to: Logger.new(STDERR)) —

    Logger object

  • opts (Hash) (defaults to: {}) —

    Additional options

Returns:

  • (Integer) —

    Exit code: 0=no diffs, 1=something went wrong, 2=worked but there are diffs



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# File 'lib/octocatalog-diff/cli.rb', line 54

def self.cli(argv = ARGV, logger = Logger.new(STDERR), opts = {})
  # Save a copy of argv to print out later in debugging
  argv_save = argv.dup

  # Are there additional ARGV to munge, e.g. that have been supplied in the options from a
  # configuration file?
  if opts.key?(:additional_argv)
    raise ArgumentError, ':additional_argv must be array!' unless opts[:additional_argv].is_a?(Array)
    argv.concat opts[:additional_argv]
  end

  # Parse command line
  options = parse_opts(argv)

  # Additional options from hard-coded specified options. These are only processed if
  # there are not already values defined from command line options.
  # Note: do NOT use 'options[k] ||= v' here because if the value of options[k] is boolean(false)
  # it will then be overridden. Whereas the intent is to define values only for those keys that don't exist.
  opts.each { |k, v| options[k] = v unless options.key?(k) }
  veto_options = %w(enc header hiera_config include_tags)
  veto_options.each { |x| options.delete(x.to_sym) if options["no_#{x}".to_sym] }
  options[:ignore].concat opts.fetch(:additional_ignores, [])

  # Incorporate default options where needed.
  # Note: do NOT use 'options[k] ||= v' here because if the value of options[k] is boolean(false)
  # it will then be overridden. Whereas the intent is to define values only for those keys that don't exist.
  DEFAULT_OPTIONS.each { |k, v| options[k] = v unless options.key?(k) }
  veto_with_none_options = %w(hiera_path hiera_path_strip)
  veto_with_none_options.each { |x| options.delete(x.to_sym) if options[x.to_sym] == :none }

  # Fact and ENC overrides come in here - 'options' is modified
  setup_fact_overrides(options)
  setup_enc_overrides(options)

  # Configure the logger and logger.debug initial information
  # 'logger' is modified and used
  setup_logger(logger, options, argv_save)

  # --catalog-only is a special case that compiles the catalog for the "to" branch
  # and then exits, without doing any 'diff' whatsoever. Support that option.
  return catalog_only(logger, options) if options[:catalog_only]

  # Set up the cached master directory - maintain it, adjust options if needed. However, if we
  # are getting the 'from' catalog from PuppetDB, then don't do this.
  unless options[:cached_master_dir].nil? || options[:from_puppetdb]
    OctocatalogDiff::CatalogUtil::CachedMasterDirectory.run(options, logger)
  end

  # bootstrap_then_exit is a special case that only prepares directories and does not
  # depend on facts. This happens within the 'catalogs' object, since bootstrapping and
  # preparing catalogs are tightly coupled operations. However this does not actually
  # build catalogs.
  if options[:bootstrap_then_exit]
    catalogs_obj = OctocatalogDiff::Util::Catalogs.new(options, logger)
    return bootstrap_then_exit(logger, catalogs_obj)
  end

  # Compile catalogs and do catalog-diff
  catalog_diff = OctocatalogDiff::API::V1.catalog_diff(options.merge(logger: logger))
  diffs = catalog_diff.diffs

  # Display diffs
  printer_obj = OctocatalogDiff::Cli::Printer.new(options, logger)
  printer_obj.printer(diffs, catalog_diff.from.compilation_dir, catalog_diff.to.compilation_dir)

  # Return the resulting diff object if requested (generally for testing) or otherwise return exit code
  return catalog_diff if opts[:INTEGRATION]
  diffs.any? ? EXITCODE_SUCCESS_WITH_DIFFS : EXITCODE_SUCCESS_NO_DIFFS
end

.parse_opts(argv) ⇒ Hash

Parse command line options with ‘optparse’. Returns a hash with the parsed arguments.

Parameters:

  • argv (Array) —

    Command line arguments (MUST be specified)

Returns:

  • (Hash) —

    Options



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# File 'lib/octocatalog-diff/cli.rb', line 127

def self.parse_opts(argv)
  options = { ignore: DEFAULT_IGNORES.dup }
  Options.parse_options(argv, options)
end

.setup_enc_overrides(options) ⇒ Object

ENC parameter overrides come in here



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# File 'lib/octocatalog-diff/cli.rb', line 148

def self.setup_enc_overrides(options)
  setup_overrides(:from_enc_override, options)
  setup_overrides(:to_enc_override, options)
end

.setup_fact_overrides(options) ⇒ Object

Fact overrides come in here



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# File 'lib/octocatalog-diff/cli.rb', line 142

def self.setup_fact_overrides(options)
  setup_overrides(:from_fact_override, options)
  setup_overrides(:to_fact_override, options)
end

.setup_logger(logger, options, argv_save) ⇒ Object

Helper method: Configure and setup logger



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# File 'lib/octocatalog-diff/cli.rb', line 154

def self.setup_logger(logger, options, argv_save)
  # Configure the logger
  logger.level = Logger::INFO
  logger.level = Logger::DEBUG if options[:debug]
  logger.level = Logger::ERROR if options[:quiet]

  # Some debugging information up front
  version_display = ENV['OCTOCATALOG_DIFF_CUSTOM_VERSION'] || VERSION
  logger.debug "Running octocatalog-diff #{version_display} with ruby #{RUBY_VERSION}"
  logger.debug "Command line arguments: #{argv_save.inspect}"
  logger.debug "Running on host #{Socket.gethostname} (#{RUBY_PLATFORM})"
end

.setup_overrides(key, options) ⇒ Object

Generic overrides



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# File 'lib/octocatalog-diff/cli.rb', line 133

def self.setup_overrides(key, options)
  o = options["#{key}_in".to_sym]
  return unless o.is_a?(Array)
  return unless o.any?
  options[key] ||= []
  options[key].concat o.map { |x| OctocatalogDiff::API::V1::Override.create_from_input(x) }
end