mirror of
https://github.com/balena-io/balena-cli.git
synced 2024-12-21 06:33:28 +00:00
275 lines
8.5 KiB
TypeScript
275 lines
8.5 KiB
TypeScript
/*
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Copyright 2016-2019 Balena
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 BalenaSdk = require('balena-sdk');
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import Bluebird = require('bluebird');
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import chalk from 'chalk';
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import _ = require('lodash');
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import os = require('os');
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import visuals = require('resin-cli-visuals');
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import rindle = require('rindle');
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import { InitializeEmitter, OperationState } from 'balena-device-init';
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const waitStreamAsync = Bluebird.promisify(rindle.wait);
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const balena = BalenaSdk.fromSharedOptions();
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export function getGroupDefaults(group: {
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options: Array<{ name: string; default?: string }>;
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}): { [name: string]: string | undefined } {
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return _.chain(group)
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.get('options')
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.map(question => [question.name, question.default])
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.fromPairs()
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.value();
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}
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export function stateToString(state: OperationState) {
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const percentage = _.padStart(`${state.percentage}`, 3, '0');
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const result = `${chalk.blue(percentage + '%')} ${chalk.cyan(
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state.operation.command,
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)}`;
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switch (state.operation.command) {
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case 'copy':
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return `${result} ${state.operation.from.path} -> ${
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state.operation.to.path
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}`;
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case 'replace':
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return `${result} ${state.operation.file.path}, ${
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state.operation.copy
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} -> ${state.operation.replace}`;
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case 'run-script':
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return `${result} ${state.operation.script}`;
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default:
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throw new Error(`Unsupported operation: ${state.operation.command}`);
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}
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}
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export function sudo(
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command: string[],
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{ stderr, msg }: { stderr?: NodeJS.WritableStream; msg?: string } = {},
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) {
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const { executeWithPrivileges } = require('./sudo');
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if (os.platform() !== 'win32') {
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console.log(
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msg || 'If asked please type your computer password to continue',
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);
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}
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return executeWithPrivileges(command, stderr);
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}
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export function runCommand(command: string): Bluebird<void> {
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const capitano = require('capitano');
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return Bluebird.fromCallback(resolver => capitano.run(command, resolver));
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}
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export async function getManifest(
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image: string,
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deviceType: string,
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): Promise<BalenaSdk.DeviceType> {
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const init = await import('balena-device-init');
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const manifest = await init.getImageManifest(image);
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if (manifest != null) {
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return manifest;
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}
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return balena.models.device.getManifestBySlug(deviceType);
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}
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export const areDeviceTypesCompatible = (
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deviceTypeA: BalenaSdk.DeviceType,
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deviceTypeB: BalenaSdk.DeviceType,
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) =>
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deviceTypeA.arch === deviceTypeB.arch &&
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!!deviceTypeA.isDependent === !!deviceTypeB.isDependent;
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export async function getOsVersion(
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image: string,
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manifest: BalenaSdk.DeviceType,
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): Promise<string | null> {
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const init = await import('balena-device-init');
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return init.getImageOsVersion(image, manifest);
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}
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export function osProgressHandler(step: InitializeEmitter) {
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step.on('stdout', process.stdout.write.bind(process.stdout));
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step.on('stderr', process.stderr.write.bind(process.stderr));
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step.on('state', function(state) {
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if (state.operation.command === 'burn') {
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return;
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}
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console.log(exports.stateToString(state));
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});
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const progressBars = {
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write: new visuals.Progress('Writing Device OS'),
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check: new visuals.Progress('Validating Device OS'),
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};
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step.on('burn', state => progressBars[state.type].update(state));
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return waitStreamAsync(step);
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}
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export function getArchAndDeviceType(
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applicationName: string,
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): Bluebird<{ arch: string; device_type: string }> {
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return Bluebird.join(
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getApplication(applicationName),
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balena.models.config.getDeviceTypes(),
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function(app, deviceTypes) {
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const config = _.find<BalenaSdk.DeviceType>(deviceTypes, {
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slug: app.device_type,
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});
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if (!config) {
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throw new Error('Could not read application information!');
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}
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return { device_type: app.device_type, arch: config.arch };
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},
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);
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}
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export function getApplication(applicationName: string) {
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// Check for an app of the form `user/application`, and send
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// that off to a special handler (before importing any modules)
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const match = applicationName.split('/');
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const extraOptions: BalenaSdk.PineOptionsFor<BalenaSdk.Application> = {
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$expand: {
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application_type: {
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$select: ['name', 'slug', 'supports_multicontainer', 'is_legacy'],
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},
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},
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};
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if (match.length > 1) {
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return balena.models.application.getAppByOwner(
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match[1],
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match[0],
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extraOptions,
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);
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}
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return balena.models.application.get(applicationName, extraOptions);
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}
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// A function to reliably execute a command
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// in all supported operating systems, including
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// different Windows environments like `cmd.exe`
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// and `Cygwin`.
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export function getSubShellCommand(command: string) {
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if (os.platform() === 'win32') {
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return {
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program: 'cmd.exe',
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args: ['/s', '/c', command],
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};
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} else {
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return {
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program: '/bin/sh',
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args: ['-c', command],
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};
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}
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}
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/**
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* Call `func`, and if func() throws an error or returns a promise that
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* eventually rejects, retry it `times` many times, each time printing a
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* log message including the given `label` and the error that led to
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* retrying. Wait delayMs before the first retry, multiplying the wait
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* by backoffScaler for each further attempt.
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* @param func: The function to call and, if needed, retry calling
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* @param times: How many times to retry calling func()
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* @param label: Label to include in the retry log message
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* @param delayMs: How long to wait before the first retry
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* @param backoffScaler: Multiplier to previous wait time
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* @param count: Used "internally" for the recursive calls
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*/
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export function retry<T>(
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func: () => T,
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times: number,
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label: string,
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delayMs = 1000,
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backoffScaler = 2,
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count = 0,
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): Bluebird<T> {
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let promise = Bluebird.try(func);
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if (count < times) {
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promise = promise.catch((err: Error) => {
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const delay = backoffScaler ** count * delayMs;
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console.log(
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`Retrying "${label}" after ${(delay / 1000).toFixed(2)}s (${count +
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1} of ${times}) due to: ${err}`,
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);
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return Bluebird.delay(delay).then(() =>
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retry(func, times, label, delayMs, backoffScaler, count + 1),
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);
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});
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}
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return promise;
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}
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/**
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* Return a compare(a, b) function suitable for use as the argument for the
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* sort() method of an array. That function will use the given manuallySortedArray
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* as "sorting guidance":
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* - If both a and b are found in the manuallySortedArray, the returned
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* compare(a, b) function will follow that ordering.
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* - If neither a nor b are found in the manuallySortedArray, the returned
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* compare(a, b) function will compare a and b using the standard '<' and
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* '>' Javascript operators.
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* - If only a or only b are found in the manuallySortedArray, the returned
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* compare(a, b) function will treat the element that was found as being
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* "smaller than" the not-found element (i.e. found elements appear before
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* not-found elements in sorted order).
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*
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* The equalityFunc(a, x) argument is a function used to compare the items
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* being sorted against the items in the manuallySortedArray. For example, if
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* equalityFunc was (a, x) => a.startsWith(x), where a is an item being sorted
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* and x is an item in the manuallySortedArray, then the manuallySortedArray
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* could contain prefix substrings to guide the sorting.
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*
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* @param manuallySortedArray A pre-sorted array to guide the sorting
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* @param equalityFunc An optional function used to compare the items being
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* sorted against items in manuallySortedArray. It should return true if
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* the two items compare equal, otherwise false. The arguments are the
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* same as provided by the standard Javascript array.findIndex() method.
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*/
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export function getManualSortCompareFunction<T, U = T>(
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manuallySortedArray: U[],
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equalityFunc: (a: T, x: U, index: number, array: U[]) => boolean,
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): (a: T, b: T) => number {
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return function(a: T, b: T): number {
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const indexA = manuallySortedArray.findIndex((x, index, array) =>
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equalityFunc(a, x, index, array),
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);
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const indexB = manuallySortedArray.findIndex((x, index, array) =>
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equalityFunc(b, x, index, array),
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);
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if (indexA >= 0 && indexB >= 0) {
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return indexA - indexB;
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} else if (indexA < 0 && indexB < 0) {
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return a < b ? -1 : a > b ? 1 : 0;
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} else {
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return indexA < 0 ? 1 : -1;
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}
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};
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}
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