Method: TFWrapper::RakeTasks#check_tf_version

Defined in:
lib/tfwrapper/raketasks.rb

#check_tf_version ⇒ Object

Check that the terraform version is compatible



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# File 'lib/tfwrapper/raketasks.rb', line 428

def check_tf_version
  # run: terraform -version
  all_out_err, exit_status = TFWrapper::Helpers.run_cmd_stream_output(
    'terraform version', @tf_dir
  )
  unless exit_status.zero?
    raise StandardError, "ERROR: 'terraform -version' exited " \
      "#{exit_status}: #{all_out_err}"
  end
  all_out_err = all_out_err.strip
  # Find the terraform version string
  m = /Terraform v(\d+\.\d+\.\d+).*/.match(all_out_err)
  unless m
    raise StandardError, 'ERROR: could not determine terraform version ' \
      "from 'terraform -version' output: #{all_out_err}"
  end
  # the version will be a string like:
  # Terraform v0.9.2
  # or:
  # Terraform v0.9.3-dev (<GIT SHA><+CHANGES>)
  tf_ver = Gem::Version.new(m[1])
  unless tf_ver >= min_tf_version
    raise StandardError, "ERROR: tfwrapper #{TFWrapper::VERSION} is only " \
      "compatible with Terraform >= #{min_tf_version} but your terraform " \
      "binary reports itself as #{m[1]} (#{all_out_err})"
  end
  puts "Running with: #{all_out_err}"
  tf_ver
end