balena-cli/lib/utils/config.ts

/*
Copyright 2016-2017 Resin.io

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
import Promise = require('bluebird');
import ResinSdk = require('resin-sdk');
import _ = require('lodash');
import deviceConfig = require('resin-device-config');

const resin = ResinSdk.fromSharedOptions();

export function generateBaseConfig(
	application: ResinSdk.Application,
	options: { appUpdatePollInterval?: number },
) {
	options = _.mapValues(options, function(value, key) {
		if (key === 'appUpdatePollInterval') {
			return value! * 60 * 1000;
		} else {
			return value;
		}
	});

	return Promise.props({
		userId: resin.auth.getUserId(),
		username: resin.auth.whoami(),
		apiUrl: resin.settings.get('apiUrl'),
		vpnUrl: resin.settings.get('vpnUrl'),
		registryUrl: resin.settings.get('registryUrl'),
		deltaUrl: resin.settings.get('deltaUrl'),
		apiConfig: resin.models.config.getAll(),
	}).then(results => {
		return deviceConfig.generate(
			{
				application,
				user: {
					id: results.userId,
					username: results.username,
				},
				endpoints: {
					api: results.apiUrl,
					vpn: results.vpnUrl,
					registry: results.registryUrl,
					delta: results.deltaUrl,
				},
				pubnub: results.apiConfig.pubnub,
				mixpanel: {
					token: results.apiConfig.mixpanelToken,
				},
			},
			options,
		);
	});
}

export function generateApplicationConfig(
	application: ResinSdk.Application,
	options: {},
) {
	return generateBaseConfig(application, options).tap(config =>
		addApplicationKey(config, application.id),
	);
}

export function generateDeviceConfig(
	device: ResinSdk.Device & { application_name: string },
	deviceApiKey: string | null,
	options: {},
) {
	return resin.models.application
		.get(device.application_name)
		.then(application => {
			return generateBaseConfig(application, options).tap(config => {
				// Device API keys are only safe for ResinOS 2.0.3+. We could somehow obtain
				// the expected version for this config and generate one when we know it's safe,
				// but instead for now we fall back to app keys unless the user has explicitly opted in.
				if (deviceApiKey) {
					return addDeviceKey(config, device.uuid, deviceApiKey);
				} else {
					return addApplicationKey(config, application.id);
				}
			});
		})
		.then(config => {
			// Associate a device, to prevent the supervisor
			// from creating another one on its own.
			config.registered_at = Math.floor(Date.now() / 1000);
			config.deviceId = device.id;
			config.uuid = device.uuid;

			return config;
		});
}

function addApplicationKey(config: any, applicationNameOrId: string | number) {
	return resin.models.application
		.generateApiKey(applicationNameOrId)
		.tap(apiKey => {
			config.apiKey = apiKey;
		});
}

function addDeviceKey(config: any, uuid: string, customDeviceApiKey: string) {
	return Promise.try(() => {
		return customDeviceApiKey || resin.models.device.generateDeviceKey(uuid);
	}).tap(deviceApiKey => {
		config.deviceApiKey = deviceApiKey;
	});
}