Class: Bolt::Inventory::Group2

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/inventory/group2.rb

Constant Summary collapse

NAME_REGEX =

Regex used to validate group names and target aliases.

/\A[a-z0-9_][a-z0-9_-]*\Z/.freeze
DATA_KEYS = 
%w[config facts vars features plugin_hooks].freeze
TARGET_KEYS = 
DATA_KEYS + %w[name alias uri]
GROUP_KEYS = 
DATA_KEYS + %w[name groups targets]
CONFIG_KEYS = 
Bolt::TRANSPORTS.keys.map(&:to_s) + ['transport']

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input, plugins) ⇒ Group2

Returns a new instance of Group2.

Raises:



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# File 'lib/bolt/inventory/group2.rb', line 20

def initialize(input, plugins)
  @logger = Logging.logger[self]
  @plugins = plugins

  input = @plugins.resolve_top_level_references(input) if @plugins.reference?(input)

  raise ValidationError.new("Group does not have a name", nil) unless input.key?('name')

  @name = @plugins.resolve_references(input['name'])

  raise ValidationError.new("Group name must be a String, not #{@name.inspect}", nil) unless @name.is_a?(String)
  raise ValidationError.new("Invalid group name #{@name}", @name) unless @name =~ NAME_REGEX

  validate_group_input(input)

  @input = input

  validate_data_keys(@input)

  targets = @plugins.resolve_top_level_references(input.fetch('targets', []))

  @unresolved_targets = {}
  @resolved_targets = {}

  @aliases = {}
  @string_targets = []

  Array(targets).each do |target|
    # If target is a string, it can either be trivially defining a target
    # or it could be a name/alias of a target defined in another group.
    # We can't tell the difference until all groups have been resolved,
    # so we store the string on its own here and process it later.
    if target.is_a?(String)
      @string_targets << target
    # Handle plugins at this level so that lookups cannot trigger recursive lookups
    elsif target.is_a?(Hash)
      add_target_definition(target)
    else
      raise ValidationError.new("Target entry must be a String or Hash, not #{target.class}", @name)
    end
  end

  groups = input.fetch('groups', [])
  # 'groups' can be a _plugin reference, in which case we want to resolve
  # it. That can itself return a reference, so we want to keep resolving
  # them until we have a value. We don't just use resolve_references
  # though, since that will resolve any nested references and we want to
  # leave it to the group to do that lazily.
  groups = @plugins.resolve_top_level_references(groups)

  @groups = Array(groups).map { |g| Group2.new(g, plugins) }
end

Instance Attribute Details

#groups ⇒ Object

Returns the value of attribute groups.



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# File 'lib/bolt/inventory/group2.rb', line 10

def groups
  @groups
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/bolt/inventory/group2.rb', line 10

def name
  @name
end

Instance Method Details

#add_target(target) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 150

def add_target(target)
  @resolved_targets[target.name] = { 'name' => target.name }
end

#add_target_definition(target) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 93

def add_target_definition(target)
  # This check ensures target lookup plugins do not returns bare strings.
  # Remove it if we decide to allows task plugins to return string Target
  # names.
  unless target.is_a?(Hash)
    raise ValidationError.new("Target entry must be a Hash, not #{target.class}", @name)
  end

  target['name'] = @plugins.resolve_references(target['name']) if target.key?('name')
  target['uri'] = @plugins.resolve_references(target['uri']) if target.key?('uri')
  target['alias'] = @plugins.resolve_references(target['alias']) if target.key?('alias')

  t_name = target['name'] || target['uri']

  if t_name.nil? || t_name.empty?
    raise ValidationError.new("No name or uri for target: #{target}", @name)
  end

  unless t_name.is_a? String
    raise ValidationError.new("Target name must be a String, not #{t_name.class}", @name)
  end

  unless t_name.ascii_only?
    raise ValidationError.new("Target name must be ASCII characters: #{target}", @name)
  end

  if local_targets.include?(t_name)
    @logger.warn("Ignoring duplicate target in #{@name}: #{target}")
    return
  end

  unless (unexpected_keys = target.keys - TARGET_KEYS).empty?
    msg = "Found unexpected key(s) #{unexpected_keys.join(', ')} in target #{t_name}"
    @logger.warn(msg)
  end

  validate_data_keys(target, t_name)

  if target.include?('alias')
    aliases = target['alias']
    aliases = [aliases] if aliases.is_a?(String)
    unless aliases.is_a?(Array)
      msg = "Alias entry on #{t_name} must be a String or Array, not #{aliases.class}"
      raise ValidationError.new(msg, @name)
    end

    insert_alia(t_name, aliases)
  end

  @unresolved_targets[t_name] = target
end

#all_target_names ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 89

def all_target_names
  @unresolved_targets.keys + @resolved_targets.keys
end

#all_targets ⇒ Object

Returns all targets contained within the group, which includes targets from subgroups.



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# File 'lib/bolt/inventory/group2.rb', line 357

def all_targets
  @groups.inject(local_targets) do |acc, g|
    acc.merge(g.all_targets)
  end
end

#clear_alia(target_name) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 165

def clear_alia(target_name)
  @aliases.reject! { |_alias, name| name == target_name }
end

#collect_groups ⇒ Object

Return a mapping of group names to group.



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# File 'lib/bolt/inventory/group2.rb', line 371

def collect_groups
  @groups.inject(name => self) do |acc, g|
    acc.merge(g.collect_groups)
  end
end

#data_merge(data1, data2) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 169

def data_merge(data1, data2)
  if data2.nil? || data1.nil?
    return data2 || data1
  end

  {
    'config' => Bolt::Util.deep_merge(data1['config'], data2['config']),
    'name' => data1['name'] || data2['name'],
    'uri' => data1['uri'] || data2['uri'],
    # Collect all aliases across all groups for each target uri
    'alias' => [*data1['alias'], *data2['alias']],
    # Shallow merge instead of deep merge so that vars with a hash value
    # are assigned a new hash, rather than merging the existing value
    # with the value meant to replace it
    'vars' => data1['vars'].merge(data2['vars']),
    'facts' => Bolt::Util.deep_merge(data1['facts'], data2['facts']),
    'features' => data1['features'] | data2['features'],
    'plugin_hooks' => data1['plugin_hooks'].merge(data2['plugin_hooks']),
    'groups' => data2['groups'] + data1['groups']
  }
end

#group_collect(target_name) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 387

def group_collect(target_name)
  child_data = @groups.map { |group| group.group_collect(target_name) }
  # Data from earlier groups wins
  child_result = child_data.inject do |acc, group_data|
    data_merge(group_data, acc)
  end

  # If this group has the target or one of the child groups has the
  # target, return the data, otherwise return nil
  if child_result || local_targets.include?(target_name)
    # Children override the parent
    data_merge(group_data, child_result)
  end
end

#group_data ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 347

def group_data
  @group_data ||= resolve_data_keys(@input).merge('groups' => [@name])
end

#insert_alia(target_name, aliases) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 154

def insert_alia(target_name, aliases)
  aliases.each do |alia|
    raise ValidationError.new("Invalid alias #{alia}", @name) unless alia =~ NAME_REGEX

    if (found = @aliases[alia])
      raise ValidationError.new(alias_conflict(alia, found, target_name), @name)
    end
    @aliases[alia] = target_name
  end
end

#local_targets ⇒ Object

Returns targets contained directly within the group, ignoring subgroups



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# File 'lib/bolt/inventory/group2.rb', line 352

def local_targets
  Set.new(@unresolved_targets.keys) + Set.new(@resolved_targets.keys)
end

#remove_target(target) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 145

def remove_target(target)
  @resolved_targets.delete(target.name)
  @unresolved_targets.delete(target.name)
end

#resolve_data_keys(data, target = nil) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 309

def resolve_data_keys(data, target = nil)
  result = {
    'config' => @plugins.resolve_references(data.fetch('config', {})),
    'vars' => @plugins.resolve_references(data.fetch('vars', {})),
    'facts' => @plugins.resolve_references(data.fetch('facts', {})),
    'features' => @plugins.resolve_references(data.fetch('features', [])),
    'plugin_hooks' => @plugins.resolve_references(data.fetch('plugin_hooks', {}))
  }
  validate_data_keys(result, target)
  result['features'] = Set.new(result['features'].flatten)
  result
end

#resolve_string_targets(aliases, known_targets) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 191

def resolve_string_targets(aliases, known_targets)
  @string_targets.each do |string_target|
    # If this is the name of a target defined elsewhere, then insert the
    # target into this group as just a name. Otherwise, add a new target
    # with the string as the URI.
    if known_targets.include?(string_target)
      @unresolved_targets[string_target] = { 'name' => string_target }
    # If this is an alias for an existing target, then add it to this group
    elsif (canonical_name = aliases[string_target])
      if local_targets.include?(canonical_name)
        @logger.warn("Ignoring duplicate target in #{@name}: #{canonical_name}")
      else
        @unresolved_targets[canonical_name] = { 'name' => canonical_name }
      end
    # If it's not the name or alias of an existing target, then make a
    # new target using the string as the URI
    elsif local_targets.include?(string_target)
      @logger.warn("Ignoring duplicate target in #{@name}: #{string_target}")
    else
      @unresolved_targets[string_target] = { 'uri' => string_target }
    end
  end

  @groups.each { |g| g.resolve_string_targets(aliases, known_targets) }
end

#target_aliases ⇒ Object

Returns a mapping of aliases to targets contained within the group, which includes subgroups.



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# File 'lib/bolt/inventory/group2.rb', line 364

def target_aliases
  @groups.inject(@aliases) do |acc, g|
    acc.merge(g.target_aliases)
  end
end

#target_collect(target_name) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 377

def target_collect(target_name)
  child_data = @groups.map { |group| group.target_collect(target_name) }
  # Data from earlier groups wins
  child_result = child_data.inject do |acc, group_data|
    data_merge(group_data, acc)
  end
  # Children override the parent
  data_merge(target_data(target_name), child_result)
end

#target_data(target_name) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 73

def target_data(target_name)
  if @unresolved_targets.key?(target_name)
    target = @unresolved_targets.delete(target_name)
    resolved_data = resolve_data_keys(target, target_name).merge(
      'name' => target['name'],
      'uri' => target['uri'],
      'alias' => target['alias'],
      # groups come from group_data
      'groups' => []
    )
    @resolved_targets[target_name] = resolved_data
  else
    @resolved_targets[target_name]
  end
end

#validate(used_group_names = Set.new, used_target_names = Set.new, used_aliases = {}) ⇒ Object

Raises:



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# File 'lib/bolt/inventory/group2.rb', line 256

def validate(used_group_names = Set.new, used_target_names = Set.new, used_aliases = {})
  # Test if this group name conflicts with anything used before.
  raise ValidationError.new("Tried to redefine group #{@name}", @name) if used_group_names.include?(@name)
  raise ValidationError.new(group_target_conflict(@name), @name) if used_target_names.include?(@name)
  raise ValidationError.new(group_alias_conflict(@name), @name) if used_aliases.include?(@name)

  used_group_names << @name

  # Collect target names and aliases into a list used to validate that subgroups don't conflict.
  # Used names validate that previously used group names don't conflict with new target names/aliases.
  @unresolved_targets.merge(@resolved_targets).each do |t_name, t_data|
    # Require targets to be parseable as a Target.
    begin
      # Catch malformed URI here
      Bolt::Inventory::Target.parse_uri(t_data['uri'])
    rescue Bolt::ParseError => e
      @logger.debug(e)
      raise ValidationError.new("Invalid target uri #{t_data['uri']}", @name)
    end

    raise ValidationError.new(group_target_conflict(t_name), @name) if used_group_names.include?(t_name)
    if used_aliases.include?(t_name)
      raise ValidationError.new(alias_target_conflict(t_name), @name)
    end

    used_target_names << t_name
  end

  @aliases.each do |n, target|
    raise ValidationError.new(group_alias_conflict(n), @name) if used_group_names.include?(n)
    if used_target_names.include?(n)
      raise ValidationError.new(alias_target_conflict(n), @name)
    end

    if used_aliases.include?(n)
      raise ValidationError.new(alias_conflict(n, target, used_aliases[n]), @name)
    end

    used_aliases[n] = target
  end

  @groups.each do |g|
    begin
      g.validate(used_group_names, used_target_names, used_aliases)
    rescue ValidationError => e
      e.add_parent(@name)
      raise e
    end
  end

  nil
end

#validate_data_keys(data, target = nil) ⇒ Object 



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# File 'lib/bolt/inventory/group2.rb', line 322

def validate_data_keys(data, target = nil)
  {
    'config' => Hash,
    'vars' => Hash,
    'facts' => Hash,
    'features' => Array,
    'plugin_hooks' => Hash
  }.each do |key, expected_type|
    next if !data.key?(key) || data[key].is_a?(expected_type) || @plugins.reference?(data[key])

    msg = +"Expected #{key} to be of type #{expected_type}, not #{data[key].class}"
    msg << " for target #{target}" if target
    raise ValidationError.new(msg, @name)
  end
  unless @plugins.reference?(data['config'])
    unexpected_keys = data.fetch('config', {}).keys - CONFIG_KEYS
    if unexpected_keys.any?
      msg = +"Found unexpected key(s) #{unexpected_keys.join(', ')} in config for"
      msg << " target #{target} in" if target
      msg << " group #{@name}"
      @logger.warn(msg)
    end
  end
end

#validate_group_input(input) ⇒ Object

Raises:



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# File 'lib/bolt/inventory/group2.rb', line 233

def validate_group_input(input)
  raise ValidationError.new("Expected group to be a Hash, not #{input.class}", nil) unless input.is_a?(Hash)

  # DEPRECATION : remove this before finalization
  if input.key?('target-lookups')
    msg = "'target-lookups' are no longer a separate key. Merge 'target-lookups' and 'targets' lists and replace 'plugin' with '_plugin'" # rubocop:disable Metrics/LineLength
    raise ValidationError.new(msg, @name)
  end

  unless (unexpected_keys = input.keys - GROUP_KEYS).empty?
    msg = "Found unexpected key(s) #{unexpected_keys.join(', ')} in group #{@name}"
    @logger.warn(msg)
  end

  Bolt::Util.walk_keys(input) do |key|
    if @plugins.reference?(key)
      raise ValidationError.new("Group keys cannot be specified as _plugin references", @name)
    else
      key
    end
  end
end