Class: Bolt::Plugin::Puppetdb

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/plugin/puppetdb.rb

Defined Under Namespace

Classes: FactLookupError

Constant Summary collapse

TEMPLATE_OPTS = 
%w[alias config facts features name uri vars].freeze
PLUGIN_OPTS = 
%w[_plugin _cache query target_mapping].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config:, context:) ⇒ Puppetdb

Returns a new instance of Puppetdb.



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# File 'lib/bolt/plugin/puppetdb.rb', line 19

def initialize(config:, context:)
  pdb_config = Bolt::PuppetDB::Config.load_config(config, context.boltdir)
  @puppetdb_client = Bolt::PuppetDB::Client.new(pdb_config)
  @logger = Bolt::Logger.logger(self)
end

Instance Attribute Details

#puppetdb_client ⇒ Object (readonly)

Returns the value of attribute puppetdb_client.



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# File 'lib/bolt/plugin/puppetdb.rb', line 17

def puppetdb_client
  @puppetdb_client
end

Instance Method Details

#fact_path(raw_fact) ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 43

def fact_path(raw_fact)
  fact_path = raw_fact.split(".")
  fact_path = fact_path.map do |segment|
    # Turn it into an integer if we can
    Integer(segment)
  rescue ArgumentError
    # Otherwise return the value
    segment
  end
  if fact_path[0] == 'facts'
    fact_path.drop(1)
  elsif fact_path == ['certname']
    fact_path
  else
    raise FactLookupError.new(raw_fact, "fact lookups must start with 'facts.'")
  end
end

#hook_descriptions ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 33

def hook_descriptions
  {
    resolve_reference: 'Query PuppetDB for a group of targets.'
  }
end

#hooks ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 29

def hooks
  hook_descriptions.keys
end

#name ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 25

def name
  'puppetdb'
end

#resolve_facts(config, certname, target_data) ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 99

def resolve_facts(config, certname, target_data)
  Bolt::Util.walk_vals(config) do |value|
    case value
    when String
      if value == 'certname'
        certname
      else
        data = target_data&.detect { |d| d['path'] == fact_path(value) }
        warn_missing_fact(certname, value) if data.nil?
        # If there's no fact data this will be nil
        data&.fetch('value', nil)
      end
    when Array, Hash
      value
    else
      raise FactLookupError.new(value, "fact lookups must be a string")
    end
  end
end

#resolve_reference(opts) ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 61

def resolve_reference(opts)
  targets = @puppetdb_client.query_certnames(opts['query'])
  facts = []

  template = opts.delete('target_mapping') || {}

  keys = Set.new(TEMPLATE_OPTS) & opts.keys
  unless keys.empty?
    raise Bolt::ValidationError, "PuppetDB plugin expects keys #{keys.to_a} to be set under 'target_mapping'"
  end

  keys = Set.new(opts.keys) - PLUGIN_OPTS
  unless keys.empty?
    raise Bolt::ValidationError, "Unknown keys in PuppetDB plugin: #{keys.to_a}"
  end

  Bolt::Util.walk_vals(template) do |value|
    # This is done in parts instead of in place so that we only need to
    # make one puppetDB query
    if value.is_a?(String)
      facts << fact_path(value)
    end
    value
  end

  facts.uniq!
  # Returns {'mycertname' => [{'path' => ['nested', 'fact'], 'value' => val'}], ... }
  fact_values = @puppetdb_client.fact_values(targets, facts)

  targets.map do |certname|
    target_data = fact_values[certname]
    target = resolve_facts(template, certname, target_data) || {}
    target['uri'] = certname unless target['uri'] || target['name']

    target
  end
end

#warn_missing_fact(certname, fact) ⇒ Object 



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# File 'lib/bolt/plugin/puppetdb.rb', line 39

def warn_missing_fact(certname, fact)
  Bolt::Logger.warn("puppetdb_missing_fact", "Could not find fact #{fact} for node #{certname}")
end