Class: MCollective::Util::Playbook::Nodes::TerraformNodes

Inherits:
Object
  • Object
show all
Defined in:
lib/mcollective/util/playbook/nodes/terraform_nodes.rb

Instance Method Summary collapse

Instance Method Details

#choria ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 54

def choria
  @_choria ||= Util::Choria.new(false)
end

#discover ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 58

def discover
  output_data
end

#from_hash(data) ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 19

def from_hash(data)
  @state = data["statefile"]
  @output = data["output"]
  @terraform = data.fetch("terraform", choria.which("terraform"))

  self
end

#output_data ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 40

def output_data
  return @_data if @_data

  data = JSON.parse(tf_output)

  raise("Only terraform outputs of type list is supported") unless data["type"] == "list"

  data["value"].each do |result|
    raise("%s is not a valid hostname" % result) unless valid_hostname?(result)
  end

  @_data = data["value"]
end

#prepare ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 6

def prepare; end

#tf_output ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 31

def tf_output
  shell = Shell.new("%s output -state %s -json %s 2>&1" % [@terraform, @state, @output])
  shell.runcommand

  raise("Terraform exited with code %d: %s" % [shell.status.exitstatus, shell.stdout]) unless shell.status.exitstatus == 0

  shell.stdout
end

#valid_hostname?(host) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 27

def valid_hostname?(host)
  host =~ /^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$/
end

#validate_configuration! ⇒ Object 



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# File 'lib/mcollective/util/playbook/nodes/terraform_nodes.rb', line 8

def validate_configuration!
  raise("The supplied terraform path %s is not executable" % @terraform) if @terraform && !File.executable?(@terraform)
  raise("A terraform state file is needed") unless @state
  raise("The terraform statefile %s is not readable" % @state) unless File.readable?(@state)
  raise("An output name is needed") unless @output

  Validator.validate(@terraform, :shellsafe)
  Validator.validate(@state, :shellsafe)
  Validator.validate(@output, :shellsafe)
end