Class: VagrantPlugins::TerraformProvider::Action::ReadState

Inherits:
Object
  • Object
show all
Includes:
Util::MachineNames, Util::TerraformExecute
Defined in:
lib/vagrant-terraform/action/read_state.rb

Overview

This action reads the state of the machine and puts it in the ‘:machine_state_id` key in the environment.

Constant Summary

Constants included from Util::MachineNames

Util::MachineNames::DEFAULT_NAME

Instance Method Summary collapse

Methods included from Util::MachineNames

machine_hostname, machine_vmname

Methods included from Util::TerraformExecute

terraform_execute

Constructor Details

#initialize(app, env) ⇒ ReadState

Returns a new instance of ReadState.



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# File 'lib/vagrant-terraform/action/read_state.rb', line 16

def initialize(app, env)
  @app    = app
  @logger = Log4r::Logger.new("vagrant_terraform::action::read_state")
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vagrant-terraform/action/read_state.rb', line 21

def call(env)
  env[:machine_state_id] = read_state(env)
  @app.call(env)
end

#read_state(env) ⇒ Object 



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# File 'lib/vagrant-terraform/action/read_state.rb', line 26

def read_state(env)
  env[:machine_tf_dir] = ".vagrant/terraform/#{machine_vmname(env[:machine])}"
  terraform_state_file = "#{env[:machine_tf_dir]}/terraform.tfstate"
  if File.exist?(env[:machine_tf_dir]) && File.exist?(terraform_state_file)
    # read_state might get called several times. Avoid refreshing 5 times in a row
    # for example during "vagrant up" for no obvious reason.
    if $terraform_refreshed.nil?
      terraform_execute(env, 'terraform refresh')
      $terraform_refreshed = true
    end

    json_data = File.read(terraform_state_file)
    data = JSON.parse(json_data)

    # Navigate to the "vm_state" value
    resources = data["resources"]
    return :not_created if resources.nil? || resources.empty?

    first_resource = resources.first  # TODO: find by name
    instances = first_resource["instances"]
    return :not_created if instances.nil? || instances.empty?

    attributes = instances.first["attributes"]
    return :not_created if attributes.nil?
    return :not_created if attributes["vm_state"].nil?

    ip_addr = attributes["default_ipv4_address"]
    unless ip_addr.nil?
      env[:ip_address] = ip_addr
    end

    return attributes["vm_state"].to_sym
  else
    return :not_created
  end
end