def call(env)
          provider_config = env[:machine].provider_config

          # Build fog config
          fog_config = {
            :provider            => :google,
            :google_project      => provider_config.google_project_id,
          }

          unless provider_config.google_json_key_location.nil?
            fog_config[:google_json_key_location] = find_key(provider_config.google_json_key_location, env)
          else
            fog_config[:google_application_default] = true
          end

          @logger.info("Creating Google API client and adding to Vagrant environment")
          env[:google_compute] = Fog::Compute.new(fog_config)
          @app.call(env)
        end
Initialize Fog::Compute and add it to the environment