Class: Puppet::Application::Preview

Inherits:
Puppet::Application
  • Object
show all
Includes:
PuppetX::Puppetlabs::Migration
Defined in:
lib/puppet/application/preview.rb

Defined Under Namespace

Classes: Colorizer

Constant Summary collapse

NOT_EQUAL = 
4
NOT_COMPLIANT = 
5
MIGRATION_3to4 = 
'3.8/4.0'.freeze
RUNHELP = 
"Run 'puppet preview --help for more details".freeze

Constants included from PuppetX::Puppetlabs::Migration

PuppetX::Puppetlabs::Migration::BASELINE_FAILED, PuppetX::Puppetlabs::Migration::CATALOG_DELTA, PuppetX::Puppetlabs::Migration::DOUBLE_COLON, PuppetX::Puppetlabs::Migration::EMPTY_ARRAY, PuppetX::Puppetlabs::Migration::EMPTY_HASH, PuppetX::Puppetlabs::Migration::GENERAL_ERROR, PuppetX::Puppetlabs::Migration::PREVIEW_FAILED, PuppetX::Puppetlabs::Migration::TRANSIENT_PREFIX, PuppetX::Puppetlabs::Migration::UNDEFINED_ID

Instance Method Summary collapse

Instance Method Details

#app_defaults ⇒ Object

Sets up the ‘node_cache_terminus’ default to use the Write Only Yaml terminus :write_only_yaml. If this is not wanted, the setting ´node_cache_terminus´ should be set to nil.

See Also:



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# File 'lib/puppet/application/preview.rb', line 109

def app_defaults
  super.merge({
    :node_cache_terminus => :write_only_yaml,
    :facts_terminus => 'yaml'
  })
end

#assert_and_exit ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 192

def assert_and_exit
  nodes = @overview.of_class(OverviewModel::Node)
  @exit_code =  nodes.reduce(0) do |result, node|
    exit_code = node.exit_code
    break exit_code if exit_code == BASELINE_FAILED
    exit_code > result ? exit_code : result
  end

  exit(@exit_code) unless @exit_code == CATALOG_DELTA

  case options[:assert]
  when :equal
    @exit_code = NOT_EQUAL if nodes.any? { |node| node.severity != :equal }
  when :compliant
    @exit_code = NOT_COMPLIANT if nodes.any? { |node| node.severity != :equal && node.severity != :compliant }
  end

  exit(@exit_code)
end

#catalog_diff(timestamp, baseline_hash, preview_hash) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 477

def catalog_diff(timestamp, baseline_hash, preview_hash)
  excl_file = options[:excludes]
  excludes = excl_file.nil? ? [] : CatalogDeltaModel::Exclude.parse_file(excl_file)
  CatalogDeltaModel::CatalogDelta.new(baseline_hash['data'], preview_hash['data'], options, timestamp, excludes)
end

#clean ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 367

def clean
  output_dir = Puppet[:preview_outputdir]
  node_names.each { |node| FileUtils.remove_entry_secure(File.join(output_dir, node)) }
  0
rescue Exception => e
  $stderr.puts("Clean operation failed: #{e.message}")
  1
end

#compile ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 212

def compile
  # COMPILE
  #
  Puppet[:catalog_terminus] = :diff_compiler

  # Ensure that the baseline and preview catalogs are not stored via the
  # catalog indirection (may go to puppet-db)- The preview application
  # has its own output directory (and purpose).
  #
  # TODO: Is there a better way to disable the cache ?
  #
  Puppet::Resource::Catalog.indirection.cache_class = false

  factory = OverviewModel::Factory.new

  # Hash where the DiffCompiler can propagate things like the name of the compiled baseline_environment even if the
  # compilation fails.
  #
  options[:back_channel] = {}

  node_names.each do |node|

    options[:node] = node
    begin
      # This call produces a catalog_delta, or sets @exit_code to something other than 0
      #
      timestamp = Time.now.iso8601(9)
      catalog_delta = compile_diff(timestamp)

      if options[:back_channel][:baseline_environment].to_s == options[:preview_environment]
        $stderr.puts "The baseline and preview environments for node '#{node}' are the same"
      end

      if @exit_code == CATALOG_DELTA
        baseline_log = JSON.load(File.read(options[:baseline_log]))
        preview_log = JSON.load(File.read(options[:preview_log]))
        factory.merge(catalog_delta, baseline_log, preview_log)
        @latest_catalog_delta = catalog_delta
      else
        case @exit_code
        when GENERAL_ERROR
          Puppet.log_exception(@exception)
          Puppet::Util::Log.force_flushqueue
          exit(@exit_code)
        when BASELINE_FAILED
          display_log(options[:baseline_log])
          log = JSON.load(File.read(options[:baseline_log]))
          factory.merge_failure(node, options[:back_channel][:baseline_environment], timestamp, @exit_code, log)
        when PREVIEW_FAILED
          display_log(options[:preview_log])
          log = JSON.load(File.read(options[:preview_log]))
          factory.merge_failure(node, options[:preview_environment], timestamp, @exit_code, log)
        end
      end
    end
    @overview = factory.create_overview
  end
end

#compile_diff(timestamp) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 271

def compile_diff(timestamp)
  prepare_output

  # Compilation start time
  @exit_code = 0

  begin

    # Do the compilations and get the catalogs
    unless result = Puppet::Resource::Catalog.indirection.find(options[:node], options)
      # TODO: Should always produce a result and give better error depending on what failed
      #
      raise "Could not compile catalogs for #{options[:node]}"
    end

    # WRITE the two catalogs to output files
    baseline_as_resource = result[:baseline].to_resource
    preview_as_resource = result[:preview].to_resource

    Puppet::FileSystem.open(options[:baseline_catalog], 0640, 'wb') do |of|
      of.write(PSON::pretty_generate(baseline_as_resource, :allow_nan => true, :max_nesting => false))
    end
    Puppet::FileSystem.open(options[:preview_catalog], 0640, 'wb') do |of|
      of.write(PSON::pretty_generate(preview_as_resource, :allow_nan => true, :max_nesting => false))
    end

    # Make paths real/absolute
    options[:baseline_catalog] = options[:baseline_catalog].realpath
    options[:preview_catalog]  = options[:preview_catalog].realpath

    # DIFF
    #
    # Take the two catalogs and produce pure hash (no class information).
    # Produce a diff hash using the diff utility.
    #
    baseline_hash = JSON::parse(baseline_as_resource.to_pson)
    preview_hash  = JSON::parse(preview_as_resource.to_pson)

    catalog_delta = catalog_diff(timestamp, baseline_hash, preview_hash)

    Puppet::FileSystem.open(options[:catalog_diff], 0640, 'wb') do |of|
      of.write(PSON::pretty_generate(catalog_delta.to_hash, :allow_nan => true, :max_nesting => false))
    end

    catalog_delta

  rescue PuppetX::Puppetlabs::Preview::GeneralError => e
    @exit_code = 1
    @exception = e

  rescue PuppetX::Puppetlabs::Preview::BaselineCompileError => e
    @exit_code = 2
    @exception = e

  rescue PuppetX::Puppetlabs::Preview::PreviewCompileError => e
    @exit_code = 3
    @exception = e

  rescue => e
    @exit_code = 1
    @exception = e

  ensure
    terminate_logs
    Puppet::FileSystem.open(options[:compile_info], 0640, 'wb') do |of|
      compile_info = {
        :exit_code => @exit_code,
        :baseline_environment => options[:back_channel][:baseline_environment].to_s,
        :preview_environment => options[:preview_environment],
        :time => timestamp
      }
      of.write(PSON::pretty_generate(compile_info))
    end
    Puppet::Util::Log.close_all
    Puppet::Util::Log.newdestination(:console)
  end
end

#configure_indirector_routes ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 668

def configure_indirector_routes
  # Same implementation as the base Application class, except this loads
  # routes configured for the "master" application in order to conform with
  # the behavior of `puppet master --compile`
  #
  # TODO: In 4.0, this block can be replaced with:
  #     Puppet::ApplicationSupport.configure_indirector_routes('master')
  route_file = Puppet[:route_file]
  if Puppet::FileSystem.exist?(route_file)
    routes = YAML.load_file(route_file)
    application_routes = routes['master'] # <-- This line is the actual change.
    Puppet::Indirector.configure_routes(application_routes) if application_routes
  end

  # NOTE: PE 3.x ships PuppetDB 2.x and uses the v3 PuppetDB API endpoints.
  # These return stringified, non-structured facts. However, many Future
  # parser comparisions are type-sensitive. For example, a variable holding a
  # stringified fact will fail to compare against an integer.
  #
  # So, if PuppetDB is in use, we swap in a copy of the 2.x terminus which
  # uses the v4 API which returns properly structured and typed facts.
  if Puppet::Node::Facts.indirection.terminus_class.to_s == 'puppetdb'
    Puppet::Node::Facts.indirection.terminus_class = :diff_puppetdb
    # Ensure we don't accidentally use any facts that were cached from the
    # PuppetDB v3 API.
    Puppet::Node::Facts.indirection.cache_class = false
  end
end

#count_of(elements) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 645

def count_of(elements)
  return 0 if elements.nil?
  elements.size
end

#display_file(file, pretty_json = false) ⇒ Object

Displays a file, and if the argument pretty_json is truthy the file is loaded and displayed as pretty json



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# File 'lib/puppet/application/preview.rb', line 486

def display_file(file, pretty_json=false)
  raise "Preview data for node '#{options[:node]}' does not exist" unless File.exists?(file)
  if pretty_json
    Puppet::FileSystem.open(file, nil, 'rb') do |input|
      json = JSON.load(input)
      $stdout.puts(PSON::pretty_generate(json, :allow_nan => true, :max_nesting => false))
    end
  else
    Puppet::FileSystem.open(file, nil, 'rb') do |source|
      FileUtils.copy_stream(source, $stdout)
      puts '' # ensure a new line at the end
    end
  end
end

#display_log(file_name) ⇒ Object

Displays colorized essential information from the log (severity, message, and location)



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# File 'lib/puppet/application/preview.rb', line 512

def display_log(file_name)
  data = JSON.load(file_name)
  # Output only the bare essentials
  # TODO: PRE-16 (the stacktrace is in the message)
  data.each do |entry|
    message = "#{level_label(entry['level'])}: #{entry['message']}"
    file = entry['file']
    line = entry['line']
    pos = entry['pos']
    if file && line && pos
      message << "at #{entry['file']}:#{entry['line']}:#{entry['pos']}"
    elsif file && line
      message << "at #{entry['file']}:#{entry['line']}"
    elsif file
      message << "at #{entry['file']}"
    end
    $stderr.puts  Colorizer.new.colorize(:hred, message)
  end
end

#display_overview(overview, as_json) ⇒ Object

Outputs the given overview on ‘$stdout`. The output is either in JSON format or in textual form as determined by as_json.

Parameters:

  • overview (OverviewModel::Overview) —

    the model to output

  • as_json (Boolean) —

    true for JSON output, false for textual output



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# File 'lib/puppet/application/preview.rb', line 591

def display_overview(overview, as_json)
  report = OverviewModel::Report.new(overview)
  $stdout.puts(as_json ? report.to_json : report.to_s)
end

#display_status ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 623

def display_status

  node = @overview.of_class(OverviewModel::Node)[0]

  colorizer = Colorizer.new
  case node.exit_code
  when BASELINE_FAILED
    $stdout.puts colorizer.colorize(:hred, "Node #{node.name} failed baseline compilation.")
  when PREVIEW_FAILED
    $stdout.puts colorizer.colorize(:hred, "Node #{node.name} failed preview compilation.")
  when CATALOG_DELTA

    if node.severity == :equal
      $stdout.puts colorizer.colorize(:green, "Catalogs for node '#{options[:node]}' are equal.")
    elsif node.severity == :compliant
      $stdout.puts "Catalogs for '#{node.name}' are not equal but compliant."
    else
      $stdout.puts "Catalogs for '#{node.name}' are neither equal nor compliant."
    end
  end
end

#display_summary(delta) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 536

def display_summary(delta)

  if delta
    compliant_count = delta.conflicting_resources.count {|r| r.compliant? }
    compliant_attr_count = delta.conflicting_resources.reduce(0) do |memo, r|
      memo + r.conflicting_attributes.count {|a| a.compliant? }
    end

    $stdout.puts <<-TEXT

Catalog:
Versions......: #{delta.version_equal? ? 'equal' : 'different' }
Preview.......: #{delta.preview_equal? ? 'equal' : delta.preview_compliant? ? 'compliant' : 'conflicting'}
Tags..........: #{delta.tags_ignored? ? 'ignored' : 'compared'}
String/Numeric: #{delta.string_numeric_diff_ignored? ? 'numerically compared' : 'type significant compare'}

Resources:
Baseline......: #{delta.baseline_resource_count}
Preview.......: #{delta.preview_resource_count}
Equal.........: #{delta.equal_resource_count}
Compliant.....: #{compliant_count}
Missing.......: #{delta.missing_resource_count}
Added.........: #{delta.added_resource_count}
Conflicting...: #{delta.conflicting_resource_count - compliant_count}

Attributes:
Equal.........: #{delta.equal_attribute_count}
Compliant.....: #{compliant_attr_count}
Missing.......: #{delta.missing_attribute_count}
Added.........: #{delta.added_attribute_count}
Conflicting...: #{delta.conflicting_attribute_count - compliant_attr_count}

Edges:
Baseline......: #{delta.baseline_edge_count}
Preview.......: #{delta.preview_edge_count}
Missing.......: #{count_of(delta.missing_edges)}
Added.........: #{count_of(delta.added_edges)}

TEXT
  end

  $stdout.puts <<-TEXT
Output:
For node......: #{Puppet[:preview_outputdir]}/#{options[:node]}

TEXT

end

#generate_last_overview ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 602

def generate_last_overview
  factory = OverviewModel::Factory.new
  node_names.each do |node|
    options[:node] = node
    prepare_output_options

    compile_info = read_json(:compile_info)
    case compile_info['exit_code']
    when CATALOG_DELTA
      catalog_delta = CatalogDeltaModel::CatalogDelta.from_hash(read_json(:catalog_diff))
      factory.merge(catalog_delta, read_json(:baseline_log), read_json(:preview_log))
      @latest_catalog_delta = catalog_delta
    when BASELINE_FAILED
      factory.merge_failure(node, compile_info['time'], compile_info['baseline_environment'], 2, read_json(:baseline_log))
    when PREVIEW_FAILED
      factory.merge_failure(node, compile_info['time'], compile_info['preview_environment'], 3, read_json(:preview_log))
    end
  end
  @overview = factory.create_overview
end

#generate_stats ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 750

def generate_stats
  @overview.of_class(OverviewModel::Node).reduce(Hash.new(0)) do | result, node |
    case node.exit_code
    when BASELINE_FAILED
      result[:baseline_failed] += 1
    when PREVIEW_FAILED
      result[:preview_failed] += 1
    when CATALOG_DELTA
      result[:catalog_diff] += 1

      if node.severity == :equal
        result[:equal] += 1
      elsif node.severity == :compliant
        result[:compliant] += 1
      end
    end
  result
  end
end

#help ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 98

def help
  path = ::File.expand_path( '../../../puppet_x/puppetlabs/preview/api/documentation/preview-help.md', __FILE__)
  Puppet::FileSystem.read(path)
end

#last ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 349

def last
  node_directories = Dir["#{Puppet[:preview_outputdir]}/*"]
  if node_directories.empty?
    raise "There is no preview data in the specified output directory '#{Puppet[:preview_outputdir]}', you must have data from a previous preview run to use --last"
  else

    available_nodes = []
    node_directories.each { |dir| available_nodes << dir.match(/^.*\/([^\/]*)$/)[1] }

    unless (missing_nodes = node_names - available_nodes).empty?
      raise "No preview data available for node(s) '#{missing_nodes.join(", ")}'"
    end

    prepare_output_options
    view
  end
end

#level_label(level) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 501

def level_label(level)
  case level
  when :err, 'err'
    'ERROR'
  else
    level.to_s.upcase
  end
end

#multi_node_status(stats) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 809

def multi_node_status(stats)
  $stdout.puts <<-TEXT

Summary:
Total Number of Nodes...: #{@overview.of_class(OverviewModel::Node).length}
Baseline Failed.........: #{stats[:baseline_failed]}
Preview Failed..........: #{stats[:preview_failed]}
Catalogs with Difference: #{stats[:catalog_diff]}
Compliant Catalogs......: #{stats[:compliant]}
Equal Catalogs..........: #{stats[:equal]}

TEXT
end

#multi_node_summary ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 770

def multi_node_summary
  summary = Hash[[ :equal, :compliant, :conflicting, :error ].map do |severity|
    [severity, @overview.of_class(OverviewModel::Node).select { |n| n.severity == severity }.sort.map do |n|
      { :name => n.name,
        :baseline_env => n.baseline_env.name,
        :preview_env => n.preview_env.name,
        :exit_code => n.exit_code
      }
    end]
  end]

  summary.each do |category, nodes|
    case category
    when :error
      nodes.each do |node|
        if node[:exit_code] == BASELINE_FAILED
          $stdout.puts Colorizer.new.colorize(:red, "baseline failed (#{node[:baseline_env]}): #{node[:name]}")
        elsif node[:exit_code] == PREVIEW_FAILED
          $stdout.puts Colorizer.new.colorize(:red, "preview failed (#{node[:preview_env]}): #{node[:name]}")
        else
          $stdout.puts Colorizer.new.colorize(:red, "general error (#{node[:preview_env]}): #{node[:name]}")
        end
      end
    when :conflicting
      nodes.each do |node|
        $stdout.puts "catalog delta: #{node[:name]}"
      end
    when :compliant
      nodes.each do |node|
        $stdout.puts "compliant: #{node[:name]}"
      end
    when :equal
      nodes.each do |node|
        $stdout.puts Colorizer.new.colorize(:green, "equal: #{node[:name]}")
      end
    end
  end
end

#node_names ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 376

def node_names
  # If no nodes were specified, print everything we have
  if @node_names.nil?
    given_names = options[:nodes]
    @node_names = if given_names.nil? || given_names.empty?
      # Use the directories in preview_outputdir to get the list of nodes
      Dir.glob(File.join(Puppet[:preview_outputdir], '*')).select { |f| File.directory?(f) }.map { |f| File.basename(f) }
    else
      given_names
    end
  end
  @node_names
end

#preinit ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 116

def preinit
  Signal.trap(:INT) do
    $stderr.puts 'Canceling startup'
    exit(0)
  end

  # save ARGV to protect us from it being smashed later by something
  @argv = ARGV.dup
end

#prepare_output ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 461

def prepare_output
  prepare_output_options

  # Truncate all output files to ensure output is not a mismatch of old and new
  Puppet::FileSystem.open(options[:baseline_log], 0660, 'wb') { |of| of.write('') }
  Puppet::FileSystem.open(options[:preview_log],  0660, 'wb') { |of| of.write('') }
  Puppet::FileSystem.open(options[:baseline_catalog], 0660, 'wb') { |of| of.write('') }
  Puppet::FileSystem.open(options[:preview_catalog],  0660, 'wb') { |of| of.write('') }
  Puppet::FileSystem.open(options[:catalog_diff], 0660, 'wb') { |of| of.write('') }
  Puppet::FileSystem.open(options[:compile_info], 0660, 'wb') { |of| of.write('') }

  # make the log paths absolute (required to use them as log destinations).
  options[:preview_log]      = options[:preview_log].realpath
  options[:baseline_log]     = options[:baseline_log].realpath
end

#prepare_output_options ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 440

def prepare_output_options
  # TODO: Deal with the output directory
  # It should come from a puppet setting which user can override - that currently does not exist
  # while developing simply write files to CWD
  options[:output_dir] = Puppet[:preview_outputdir] # "./PREVIEW_OUTPUT"

  # Make sure the output directory for the node exists
  node_output_dir = Puppet::FileSystem.pathname(File.join(options[:output_dir], options[:node]))
  options[:node_output_dir] = node_output_dir
  Puppet::FileSystem.mkpath(options[:node_output_dir])
  Puppet::FileSystem.chmod(0750, options[:node_output_dir])

  # Construct file name for this diff
  options[:baseline_catalog] = Puppet::FileSystem.pathname(File.join(node_output_dir, 'baseline_catalog.json'))
  options[:baseline_log]     = Puppet::FileSystem.pathname(File.join(node_output_dir, 'baseline_log.json'))
  options[:preview_catalog]  = Puppet::FileSystem.pathname(File.join(node_output_dir, 'preview_catalog.json'))
  options[:preview_log]      = Puppet::FileSystem.pathname(File.join(node_output_dir, 'preview_log.json'))
  options[:catalog_diff]     = Puppet::FileSystem.pathname(File.join(node_output_dir, 'catalog_diff.json'))
  options[:compile_info]     = Puppet::FileSystem.pathname(File.join(node_output_dir, 'compile_info.json'))
end

#print_node_list ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 823

def print_node_list
  nodes = Hash[[ :equal, :compliant, :conflicting, :error ].map do |severity|
    [severity, @overview.of_class(OverviewModel::Node).select { |n| n.severity == severity }.sort.map do |n|
      n.name
    end]
  end]

  if options[:view] == :equal_nodes
    nodes[:equal].each do |node|
      $stdout.puts node
    end
  elsif options[:view] == :compliant_nodes
    nodes[:compliant].each do |node|
      $stdout.puts node
    end
    nodes[:equal].each do |node|
      $stdout.puts node
    end
  else
    nodes[:error].each do |node|
      $stdout.puts node
    end
    if options[:view] == :diff_nodes
      nodes[:conflicting].each do |node|
        $stdout.puts node
      end
      if options[:assert] == :equal
        nodes[:compliant].each do |node|
          $stdout.puts node
        end
      end
    end
  end
end

#read_json(type) ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/application/preview.rb', line 596

def read_json(type)
  json = File.read(options[type])
  raise Puppet::Error.new("Output for node #{options[:node]} is invalid - use --clean and/or recompile") if json.nil? || json.empty?
  JSON.load(json)
end

#run_command ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 126

def run_command
  options[:node] = command_line.args
  unless options[:nodes].is_a?(Array)
    options[:nodes] = []
  end
  options[:nodes] |= command_line.args

  if options[:clean]
    raise '--clean can only be used with options --nodes and --debug' unless (options.keys - [:clean, :node, :nodes, :debug]).empty?
    exit(clean)
  end

  if options[:excludes]
    raise '--excludes cannot be used with --schema or --last' if options[:last] || options[:schema]
  end

  if options[:schema]
    unless options[:nodes].empty?
      raise 'One or more nodes were given but no compilation will be done when running with the --schema option'
    end

    case options[:schema]
    when :catalog
      catalog_path = ::File.expand_path('../../../puppet_x/puppetlabs/preview/api/schemas/catalog.json', __FILE__)
      display_file(catalog_path)
    when :catalog_delta
      delta_path = ::File.expand_path('../../../puppet_x/puppetlabs/preview/api/schemas/catalog-delta.json', __FILE__)
      display_file(delta_path)
    when :log
      log_path = ::File.expand_path('../../../puppet_x/puppetlabs/preview/api/schemas/log.json', __FILE__)
      display_file(log_path)
    when :excludes
      excludes_path = ::File.expand_path('../../../puppet_x/puppetlabs/preview/api/schemas/excludes.json', __FILE__)
      display_file(excludes_path)
    else
      help_path = ::File.expand_path('../../../puppet_x/puppetlabs/preview/api/documentation/catalog-delta.md', __FILE__)
      display_file(help_path)
    end
  else
    if options[:nodes].empty? && !options[:last]
      raise 'No node(s) given to perform preview compilation for'
    end

    if node_names.size > 1 && %w{diff baseline preview baseline_log preview_log }.include?(options[:view].to_s)
      raise "The --view option '#{options[:view]}' is not supported for multiple nodes"
    end

    if options[:last]
      last
    else
      unless options[:preview_environment]
        raise 'No --preview_environment given - cannot compile and produce a diff when only the environment of the node is known'
      end

      if options[:diff_string_numeric] && !options[:migration_checker] && !options[:migrate] == MIGRATION_3to4
        raise '--diff_string_numeric can only be used in combination with --migrate 3.8/4.0'
      end
      compile

      view

      assert_and_exit
    end
  end
end

#setup ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/application/preview.rb', line 732

def setup
  raise Puppet::Error.new('Puppet preview is not supported on Microsoft Windows') if Puppet.features.microsoft_windows?

  setup_logs

  exit(Puppet.settings.print_configs ? 0 : 1) if Puppet.settings.print_configs?

  Puppet.settings.use :main, :master, :ssl, :metrics

  setup_terminuses

  # TODO: Do we need this in preview? It sets up a write only cache
  setup_node_cache

  setup_ssl
end

#setup_logs ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 650

def setup_logs
  # This sets up logging based on --debug or --verbose if they are set in `options`
  set_log_level

  # This uses console for everything that is not a compilation
  Puppet::Util::Log.newdestination(:console)
end

#setup_node_cache ⇒ void

This method returns an undefined value.

Sets up a special node cache “write only yaml” that collects and stores node data in yaml but never finds or reads anything (this since a real cache causes stale data to be served in circumstances when the cache can not be cleared).

See Also:

  • issue 16753
  • Node::WriteOnlyYaml


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# File 'lib/puppet/application/preview.rb', line 728

def setup_node_cache
  Puppet::Node.indirection.cache_class = Puppet[:node_cache_terminus]
end

#setup_ssl ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 707

def setup_ssl
  # Configure all of the SSL stuff.
  if Puppet::SSL::CertificateAuthority.ca?
    Puppet::SSL::Host.ca_location = :local
    Puppet.settings.use :ca
    Puppet::SSL::CertificateAuthority.instance
  else
    Puppet::SSL::Host.ca_location = :none
  end
  # These lines are not on stable (seems like a copy was made from master)
  #
  # Puppet::SSL::Oids.register_puppet_oids
  # Puppet::SSL::Oids.load_custom_oid_file(Puppet[:trusted_oid_mapping_file])
end

#setup_terminuses ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 697

def setup_terminuses
  require 'puppet/file_serving/content'
  require 'puppet/file_serving/metadata'

  Puppet::FileServing::Content.indirection.terminus_class = :file_server
  Puppet::FileServing::Metadata.indirection.terminus_class = :file_server

  Puppet::FileBucket::File.indirection.terminus_class = :file
end

#terminate_logs ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 658

def terminate_logs
  # Terminate the JSON logs (the final ] is missing, and it must be provided to produce correct JSON)
  # Also, if nothing was logged, the opening [ is required, or the file will not be valid JSON
  #
  endtext = Puppet::FileSystem.size(options[:baseline_log]) == 0 ? "[\n]" : "\n]"
  Puppet::FileSystem.open(options[:baseline_log], nil, 'ab') { |of| of.write(endtext) }
  endtext = Puppet::FileSystem.size(options[:preview_log]) == 0 ? "[\n]" : "\n]"
  Puppet::FileSystem.open(options[:preview_log],  nil, 'ab') { |of| of.write(endtext) }
end

#view(catalog_delta = @latest_catalog_delta) ⇒ Object 



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# File 'lib/puppet/application/preview.rb', line 390

def view(catalog_delta = @latest_catalog_delta)
  if options[:last]
    generate_last_overview
    catalog_delta = @latest_catalog_delta
  end

  # Produce output as directed by the :view option
  #
  case options[:view]
  when :diff
    display_file(options[:catalog_diff])
  when :baseline_log
    display_file(options[:baseline_log], true)
  when :preview_log
    display_file(options[:preview_log], true)
  when :baseline
    display_file(options[:baseline_catalog])
  when :preview
    display_file(options[:preview_catalog])
  when :status
    if node_names.size > 1
      multi_node_status(generate_stats)
    else
      display_status
    end
  when :failed_nodes
    print_node_list
  when :diff_nodes
    print_node_list
  when :equal_nodes
    print_node_list
  when :compliant_nodes
    print_node_list
  when :overview
    display_overview(@overview, false)
  when :overview_json
    display_overview(@overview, true)
  when :none
    # print nothing
  else
    if node_names.size > 1
      multi_node_status(generate_stats)
      multi_node_summary
    else
      display_summary(catalog_delta)
      display_status
    end
  end
end