mirror of
https://github.com/balena-io/balena-cli.git
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565 lines
16 KiB
TypeScript
565 lines
16 KiB
TypeScript
/**
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* @license
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* Copyright 2016-2020 Balena Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import Command from '../command';
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import { ExpectedError } from '../errors';
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import * as cf from '../utils/common-flags';
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import {
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getBalenaSdk,
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getCliForm,
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getVisuals,
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stripIndent,
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} from '../utils/lazy';
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import { applicationIdInfo } from '../utils/messages';
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import type { DockerConnectionCliFlags } from '../utils/docker';
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import { dockerConnectionCliFlags } from '../utils/docker';
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import { parseAsInteger } from '../utils/validation';
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import { flags } from '@oclif/command';
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import * as _ from 'lodash';
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import type { Application, BalenaSDK, PineExpand, Release } from 'balena-sdk';
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import type { Preloader } from 'balena-preload';
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interface FlagsDef extends DockerConnectionCliFlags {
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fleet?: string;
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commit?: string;
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'splash-image'?: string;
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'dont-check-arch': boolean;
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'pin-device-to-release': boolean;
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'additional-space'?: number;
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'add-certificate'?: string[];
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help: void;
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}
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interface ArgsDef {
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image: string;
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}
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export default class PreloadCmd extends Command {
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public static description = stripIndent`
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Preload a release on a disk image (or Edison zip archive).
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Preload a release (service images/containers) from a balena fleet, and optionally
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a balenaOS splash screen, in a previously downloaded '.img' balenaOS image file
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in the local disk (a zip file is only accepted for the Intel Edison device type).
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After preloading, the balenaOS image file can be flashed to a device's SD card.
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When the device boots, it will not need to download the release, as it was
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preloaded. This is usually combined with release pinning
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(https://www.balena.io/docs/learn/deploy/release-strategy/release-policy/)
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to avoid the device downloading a newer release straight away, if available.
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Check also the Preloading and Preregistering section of the balena CLI's advanced
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masterclass document:
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https://www.balena.io/docs/learn/more/masterclasses/advanced-cli/#5-preloading-and-preregistering
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${applicationIdInfo.split('\n').join('\n\t\t')}
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Note that the this command requires Docker to be installed, as further detailed
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in the balena CLI's installation instructions:
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https://github.com/balena-io/balena-cli/blob/master/INSTALL.md
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The \`--dockerHost\` and \`--dockerPort\` flags allow a remote Docker engine to
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be used, however the image file must be accessible to the remote Docker engine
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on the same path given on the command line. This is because Docker's bind mount
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feature is used to "share" the image with a container that performs the preload.
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`;
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public static examples = [
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'$ balena preload balena.img --fleet MyFleet --commit e1f2592fc6ee949e68756d4f4a48e49bff8d72a0',
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'$ balena preload balena.img --fleet myorg/myfleet --splash-image image.png',
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'$ balena preload balena.img',
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];
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public static args = [
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{
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name: 'image',
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description: 'the image file path',
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required: true,
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},
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];
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public static usage = 'preload <image>';
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public static flags: flags.Input<FlagsDef> = {
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fleet: cf.fleet,
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commit: flags.string({
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description: `\
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The commit hash of the release to preload. Use "current" to specify the current
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release (ignored if no appId is given). The current release is usually also the
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latest, but can be pinned to a specific release. See:
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https://www.balena.io/docs/learn/deploy/release-strategy/release-policy/
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https://www.balena.io/docs/learn/more/masterclasses/fleet-management/#63-pin-using-the-api
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https://github.com/balena-io-examples/staged-releases\
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`,
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char: 'c',
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}),
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'splash-image': flags.string({
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description: 'path to a png image to replace the splash screen',
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char: 's',
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}),
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'dont-check-arch': flags.boolean({
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default: false,
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description:
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'disable architecture compatibility check between image and fleet',
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}),
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'pin-device-to-release': flags.boolean({
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default: false,
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description:
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'pin the preloaded device to the preloaded release on provision',
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char: 'p',
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}),
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'additional-space': flags.integer({
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description:
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'expand the image by this amount of bytes instead of automatically estimating the required amount',
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parse: (x) => parseAsInteger(x, 'additional-space'),
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}),
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'add-certificate': flags.string({
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description: `\
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Add the given certificate (in PEM format) to /etc/ssl/certs in the preloading container.
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The file name must end with '.crt' and must not be already contained in the preloader's
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/etc/ssl/certs folder.
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Can be repeated to add multiple certificates.\
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`,
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multiple: true,
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}),
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...dockerConnectionCliFlags,
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// Redefining --dockerPort here (defined already in dockerConnectionCliFlags)
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// without -p alias, to avoid clash with -p alias of pin-device-to-release
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dockerPort: flags.integer({
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description:
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'Docker daemon TCP port number (hint: 2375 for balena devices)',
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parse: (p) => parseAsInteger(p, 'dockerPort'),
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}),
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// Not supporting -h for help, because of clash with -h in DockerCliFlags
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// Revisit this in future release.
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help: flags.help({}),
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};
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public static authenticated = true;
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public static primary = true;
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public async run() {
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const { args: params, flags: options } = this.parse<FlagsDef, ArgsDef>(
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PreloadCmd,
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);
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const balena = getBalenaSdk();
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const balenaPreload = await import('balena-preload');
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const visuals = getVisuals();
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const nodeCleanup = await import('node-cleanup');
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const { instanceOf } = await import('../errors');
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// Check image file exists
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try {
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const fs = await import('fs');
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await fs.promises.access(params.image);
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const path = await import('path');
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if (path.extname(params.image) === '.zip') {
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console.warn(stripIndent`
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------------------------------------------------------------------------------
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Warning: A zip file is only accepted for the Intel Edison device type.
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------------------------------------------------------------------------------
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`);
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}
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} catch (error) {
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throw new ExpectedError(
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`The provided image path does not exist: ${params.image}`,
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);
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}
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// balena-preload currently does not work with numerical app IDs
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// Load app here, and use app slug from hereon
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const fleetSlug: string | undefined = options.fleet
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? await (await import('../utils/sdk')).getFleetSlug(balena, options.fleet)
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: undefined;
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const progressBars: {
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[key: string]: ReturnType<typeof getVisuals>['Progress'];
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} = {};
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const progressHandler = function (event: {
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name: string;
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percentage: number;
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}) {
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const progressBar = (progressBars[event.name] ??= new visuals.Progress(
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event.name,
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));
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return progressBar.update({ percentage: event.percentage });
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};
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const spinners: {
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[key: string]: ReturnType<typeof getVisuals>['Spinner'];
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} = {};
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const spinnerHandler = function (event: { name: string; action: string }) {
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const spinner = (spinners[event.name] ??= new visuals.Spinner(
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event.name,
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));
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if (event.action === 'start') {
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return spinner.start();
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} else {
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console.log();
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return spinner.stop();
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}
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};
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const commit = this.isCurrentCommit(options.commit || '')
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? 'latest'
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: options.commit;
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const image = params.image;
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const splashImage = options['splash-image'];
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const additionalSpace = options['additional-space'];
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const dontCheckArch = options['dont-check-arch'] || false;
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const pinDevice = options['pin-device-to-release'] || false;
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if (dontCheckArch && !fleetSlug) {
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throw new ExpectedError(
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'You need to specify a fleet if you disable the architecture check.',
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);
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}
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const certificates: string[] = options['add-certificate'] || [];
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for (const certificate of certificates) {
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if (!certificate.endsWith('.crt')) {
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throw new ExpectedError('Certificate file name must end with ".crt"');
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}
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}
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// Get a configured dockerode instance
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const dockerUtils = await import('../utils/docker');
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const docker = await dockerUtils.getDocker(options);
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const preloader = new balenaPreload.Preloader(
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null,
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docker,
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fleetSlug,
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commit,
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image,
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splashImage,
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undefined, // TODO: Currently always undefined, investigate approach in ssh command.
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dontCheckArch,
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pinDevice,
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certificates,
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additionalSpace,
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);
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let gotSignal = false;
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nodeCleanup(function (_exitCode, signal) {
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if (signal) {
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gotSignal = true;
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nodeCleanup.uninstall(); // don't call cleanup handler again
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preloader
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.cleanup()
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.then(() => {
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// calling process.exit() won't inform parent process of signal
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process.kill(process.pid, signal);
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})
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.catch((e) => {
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if (process.env.DEBUG) {
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console.error(e);
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}
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});
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return false;
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}
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});
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if (process.env.DEBUG) {
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preloader.stderr.pipe(process.stderr);
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}
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preloader.on('progress', progressHandler);
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preloader.on('spinner', spinnerHandler);
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try {
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await new Promise((resolve, reject) => {
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preloader.on('error', reject);
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resolve(
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this.prepareAndPreload(preloader, balena, {
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appId: fleetSlug,
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commit,
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pinDevice,
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}),
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);
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});
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} catch (err) {
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if (instanceOf(err, balena.errors.BalenaError)) {
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const code = err.code ? `(${err.code})` : '';
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throw new ExpectedError(`${err.message} ${code}`);
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} else {
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throw err;
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}
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} finally {
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if (!gotSignal) {
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await preloader.cleanup();
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}
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}
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}
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readonly applicationExpandOptions: PineExpand<Application> = {
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owns__release: {
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$select: ['id', 'commit', 'end_timestamp', 'composition'],
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$expand: {
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contains__image: {
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$select: ['image'],
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$expand: {
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image: {
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$select: ['image_size', 'is_stored_at__image_location'],
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},
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},
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},
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},
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$filter: {
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status: 'success',
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},
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$orderby: [{ end_timestamp: 'desc' }, { id: 'desc' }],
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},
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should_be_running__release: {
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$select: 'commit',
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},
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};
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isCurrentCommit(commit: string) {
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return commit === 'latest' || commit === 'current';
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}
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async getApplicationsWithSuccessfulBuilds(deviceTypeSlug: string) {
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const balena = getBalenaSdk();
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try {
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await balena.models.deviceType.get(deviceTypeSlug);
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} catch {
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throw new Error(`Device type "${deviceTypeSlug}" not found in API query`);
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}
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return (await balena.models.application.getAll({
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$select: ['id', 'app_name', 'should_track_latest_release'],
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$expand: this.applicationExpandOptions,
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$filter: {
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// get the apps that are of the same arch as the device type of the image
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is_for__device_type: {
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$any: {
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$alias: 'dt',
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$expr: {
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dt: {
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is_of__cpu_architecture: {
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$any: {
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$alias: 'ioca',
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$expr: {
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ioca: {
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is_supported_by__device_type: {
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$any: {
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$alias: 'isbdt',
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$expr: {
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isbdt: {
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slug: deviceTypeSlug,
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},
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},
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},
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},
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},
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},
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},
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},
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},
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},
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},
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},
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owns__release: {
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$any: {
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$alias: 'r',
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$expr: {
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r: {
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status: 'success',
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},
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},
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},
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},
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},
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$orderby: 'app_name asc',
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})) as Array<
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ApplicationWithDeviceType & {
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should_be_running__release: [Release?];
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}
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>;
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}
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async selectApplication(deviceTypeSlug: string) {
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const visuals = getVisuals();
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const applicationInfoSpinner = new visuals.Spinner(
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'Downloading list of applications and releases.',
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);
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applicationInfoSpinner.start();
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const applications = await this.getApplicationsWithSuccessfulBuilds(
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deviceTypeSlug,
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);
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applicationInfoSpinner.stop();
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if (applications.length === 0) {
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throw new ExpectedError(
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`No fleets found with successful releases for device type '${deviceTypeSlug}'`,
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);
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}
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return getCliForm().ask({
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message: 'Select a fleet',
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type: 'list',
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choices: applications.map((app) => ({
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name: app.app_name,
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value: app,
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})),
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});
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}
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selectApplicationCommit(releases: Release[]) {
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if (releases.length === 0) {
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throw new ExpectedError('This fleet has no successful releases.');
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}
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const DEFAULT_CHOICE = { name: 'current', value: 'current' };
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const choices = [DEFAULT_CHOICE].concat(
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releases.map((release) => ({
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name: `${release.end_timestamp} - ${release.commit}`,
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value: release.commit,
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})),
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);
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return getCliForm().ask({
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message: 'Select a release',
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type: 'list',
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default: 'current',
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choices,
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});
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}
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async offerToDisableAutomaticUpdates(
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application: Application,
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commit: string,
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pinDevice: boolean,
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) {
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const balena = getBalenaSdk();
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if (
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this.isCurrentCommit(commit) ||
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!application.should_track_latest_release ||
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pinDevice
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) {
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return;
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}
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const message = `\
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This fleet is set to track the latest release, and non-pinned devices
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are automatically updated when a new release is available. This may lead to
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unexpected behavior: The preloaded device will download and install the latest
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release once it is online.
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This prompt gives you the opportunity to disable automatic updates for
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this fleet now. Note that this would result in the fleet being pinned to
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the current latest release, rather than some other release that may have
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been selected for preloading. The pinned released may be further managed
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through the web dashboard or programatically through the balena API / SDK.
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Documentation about release policies and pinning can be found at:
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https://www.balena.io/docs/learn/deploy/release-strategy/release-policy/
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Alternatively, the --pin-device-to-release flag may be used to pin only the
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preloaded device to the selected release.
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Would you like to disable automatic updates for this fleet now?\
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`;
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const update = await getCliForm().ask({
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message,
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type: 'confirm',
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});
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if (!update) {
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return;
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}
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return await balena.pine.patch({
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resource: 'application',
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id: application.id,
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body: {
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should_track_latest_release: false,
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},
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});
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}
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async getAppWithReleases(balenaSdk: BalenaSDK, appId: string | number) {
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const { getApplication } = await import('../utils/sdk');
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return (await getApplication(balenaSdk, appId, {
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$expand: this.applicationExpandOptions,
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})) as Application & { should_be_running__release: [Release?] };
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}
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async prepareAndPreload(
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preloader: Preloader,
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balenaSdk: BalenaSDK,
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options: {
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appId?: string;
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commit?: string;
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pinDevice: boolean;
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},
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) {
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await preloader.prepare();
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const application = options.appId
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? await this.getAppWithReleases(balenaSdk, options.appId)
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: await this.selectApplication(preloader.config.deviceType);
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let commit: string; // commit hash or the strings 'latest' or 'current'
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const appCommit = application.should_be_running__release[0]?.commit;
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// Use the commit given as --commit or show an interactive commit selection menu
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if (options.commit) {
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if (this.isCurrentCommit(options.commit)) {
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if (!appCommit) {
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throw new Error(
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`Unexpected empty commit hash for fleet ID "${application.id}"`,
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);
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}
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// handle `--commit current` (and its `--commit latest` synonym)
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commit = 'latest';
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} else {
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const release = _.find(application.owns__release, (r) =>
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r.commit.startsWith(options.commit!),
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);
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if (!release) {
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throw new ExpectedError(
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`There is no release matching commit "${options.commit}"`,
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);
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}
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commit = release.commit;
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}
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} else {
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// this could have the value 'current'
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commit = await this.selectApplicationCommit(
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|
application.owns__release as Release[],
|
|
);
|
|
}
|
|
|
|
await preloader.setAppIdAndCommit(
|
|
application.id,
|
|
this.isCurrentCommit(commit) ? appCommit! : commit,
|
|
);
|
|
|
|
// Propose to disable automatic app updates if the commit is not the current release
|
|
await this.offerToDisableAutomaticUpdates(
|
|
application,
|
|
commit,
|
|
options.pinDevice,
|
|
);
|
|
|
|
// All options are ready: preload the image.
|
|
await preloader.preload();
|
|
}
|
|
}
|