mirror of
https://github.com/balena-io/balena-cli.git
synced 2024-12-21 06:33:28 +00:00
282 lines
8.1 KiB
TypeScript
282 lines
8.1 KiB
TypeScript
/**
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* @license
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* Copyright 2019 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 { flags } from '@oclif/command';
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import type * as BalenaSdk from 'balena-sdk';
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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 { getBalenaSdk, stripIndent } from '../../utils/lazy';
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interface FlagsDef {
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application?: string; // application name
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device?: string; // device UUID
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help: void;
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quiet: boolean;
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service?: string; // service name
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}
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interface ArgsDef {
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name: string;
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value?: string;
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}
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export default class EnvAddCmd extends Command {
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public static description = stripIndent`
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Add env or config variable to application(s), device(s) or service(s).
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Add an environment or config variable to one or more applications, devices
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or services, as selected by the respective command-line options. Either the
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--application or the --device option must be provided, and either may be be
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used alongside the --service option to define a service-specific variable.
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(A service is an application container in a "microservices" application.)
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When the --service option is used in conjunction with the --device option,
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the service variable applies to the selected device only. Otherwise, it
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applies to all devices of the selected application (i.e., the application's
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fleet). If the --service option is omitted, the variable applies to all
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services.
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If VALUE is omitted, the CLI will attempt to use the value of the environment
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variable of same name in the CLI process' environment. In this case, a warning
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message will be printed. Use \`--quiet\` to suppress it.
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'BALENA_' or 'RESIN_' are reserved variable name prefixes used to identify
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"configuration variables". Configuration variables control balena platform
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features and are treated specially by balenaOS and the balena supervisor
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running on devices. They are also stored differently in the balenaCloud API
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database. Configuration variables cannot be set for specific services,
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therefore the --service option cannot be used when the variable name starts
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with a reserved prefix. When defining custom application variables, please
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avoid the reserved prefixes.
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`;
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public static examples = [
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'$ balena env add TERM --application MyApp',
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'$ balena env add EDITOR vim --application MyApp',
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'$ balena env add EDITOR vim --application MyApp,MyApp2',
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'$ balena env add EDITOR vim --application MyApp --service MyService',
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'$ balena env add EDITOR vim --application MyApp,MyApp2 --service MyService,MyService2',
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'$ balena env add EDITOR vim --device 7cf02a6',
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'$ balena env add EDITOR vim --device 7cf02a6,d6f1433',
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'$ balena env add EDITOR vim --device 7cf02a6 --service MyService',
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'$ balena env add EDITOR vim --device 7cf02a6,d6f1433 --service MyService,MyService2',
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];
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public static args = [
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{
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name: 'name',
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required: true,
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description: 'environment or config variable name',
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},
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{
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name: 'value',
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required: false,
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description:
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"variable value; if omitted, use value from this process' environment",
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},
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];
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public static usage = 'env add <name> [value]';
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public static flags: flags.Input<FlagsDef> = {
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application: { exclusive: ['device'], ...cf.application },
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device: { exclusive: ['application'], ...cf.device },
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help: cf.help,
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quiet: cf.quiet,
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service: cf.service,
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};
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public async run() {
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const { args: params, flags: options } = this.parse<FlagsDef, ArgsDef>(
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EnvAddCmd,
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);
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const cmd = this;
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if (!options.application && !options.device) {
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throw new ExpectedError(
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'Either the --application or the --device option must always be used',
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);
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}
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await Command.checkLoggedIn();
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if (params.value == null) {
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params.value = process.env[params.name];
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if (params.value == null) {
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throw new ExpectedError(
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`Value not found for environment variable: ${params.name}`,
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);
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} else if (!options.quiet) {
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cmd.warn(
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`Using ${params.name}=${params.value} from CLI process environment`,
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);
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}
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}
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const balena = getBalenaSdk();
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const reservedPrefixes = await getReservedPrefixes(balena);
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const isConfigVar = reservedPrefixes.some((prefix) =>
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params.name.startsWith(prefix),
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);
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if (options.service) {
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if (isConfigVar) {
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throw new ExpectedError(stripIndent`
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Configuration variables prefixed with "${reservedPrefixes.join(
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'" or "',
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)}" cannot be set per service.
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Hint: remove the --service option or rename the variable.
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`);
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}
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await setServiceVars(balena, params, options);
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return;
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}
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const varType = isConfigVar ? 'configVar' : 'envVar';
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if (options.application) {
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for (const app of options.application.split(',')) {
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try {
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await balena.models.application[varType].set(
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app,
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params.name,
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params.value,
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);
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} catch (err) {
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console.error(`${err.message}, app: ${app}`);
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process.exitCode = 1;
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}
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}
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} else if (options.device) {
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for (const device of options.device.split(',')) {
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try {
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await balena.models.device[varType].set(
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device,
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params.name,
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params.value,
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);
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} catch (err) {
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console.error(`${err.message}, device: ${device}`);
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process.exitCode = 1;
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}
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}
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}
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}
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}
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/**
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* Add service variables for a device or application.
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*/
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async function setServiceVars(
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sdk: BalenaSdk.BalenaSDK,
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params: ArgsDef,
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options: FlagsDef,
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) {
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if (options.application) {
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for (const app of options.application.split(',')) {
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for (const service of options.service!.split(',')) {
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try {
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const serviceId = await getServiceIdForApp(sdk, app, service);
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await sdk.models.service.var.set(
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serviceId,
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params.name,
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params.value!,
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);
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} catch (err) {
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console.error(`${err.message}, application: ${app}`);
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process.exitCode = 1;
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}
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}
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}
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} else if (options.device) {
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const { getDeviceAndAppFromUUID } = await import('../../utils/cloud');
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for (const uuid of options.device.split(',')) {
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let device;
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let app;
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try {
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[device, app] = await getDeviceAndAppFromUUID(
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sdk,
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uuid,
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['id'],
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['app_name'],
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);
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} catch (err) {
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console.error(`${err.message}, device: ${uuid}`);
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process.exitCode = 1;
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continue;
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}
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for (const service of options.service!.split(',')) {
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try {
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const serviceId = await getServiceIdForApp(
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sdk,
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app.app_name,
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service,
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);
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await sdk.models.device.serviceVar.set(
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device.id,
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serviceId,
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params.name,
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params.value!,
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);
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} catch (err) {
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console.error(`${err.message}, service: ${service}`);
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process.exitCode = 1;
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}
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}
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}
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}
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}
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/**
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* Return a sevice ID for the given app name and service name.
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*/
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async function getServiceIdForApp(
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sdk: BalenaSdk.BalenaSDK,
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appName: string,
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serviceName: string,
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): Promise<number> {
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let serviceId: number | undefined;
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const services = await sdk.models.service.getAllByApplication(appName, {
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$filter: { service_name: serviceName },
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});
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if (services.length > 0) {
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serviceId = services[0].id;
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}
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if (serviceId === undefined) {
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throw new ExpectedError(
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`Cannot find service ${serviceName} for application ${appName}`,
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);
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}
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return serviceId;
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}
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/**
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* Return an array of variable name prefixes like: [ 'RESIN_', 'BALENA_' ].
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* These prefixes can be used to identify "configuration variables".
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*/
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async function getReservedPrefixes(
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balena: BalenaSdk.BalenaSDK,
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): Promise<string[]> {
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const settings = await balena.settings.getAll();
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const response = await balena.request.send({
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baseUrl: settings.apiUrl,
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url: '/config/vars',
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});
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return response.body.reservedNamespaces;
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}
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