cdk8s-cli
Version:
This is the command line tool for Cloud Development Kit (CDK) for Kubernetes (cdk8s).
186 lines • 31.8 kB
JavaScript
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const os = __importStar(require("os"));
const path_1 = __importDefault(require("path"));
const fs = __importStar(require("fs-extra"));
const semver = __importStar(require("semver"));
const sscaff_1 = require("sscaff");
const yaml = __importStar(require("yaml"));
const config_1 = require("../../config");
const dispatch_1 = require("../../import/dispatch");
const _manager_1 = require("../../plugins/_manager");
const util_1 = require("../../util");
const CHART_YAML_FILE = 'Chart.yaml';
const README = 'README.md';
const DEFAULT_OUTPUT_DIR = 'dist';
const DEFAULT_PLUGINS_DIR = path_1.default.join(os.homedir(), '.cdk8s', 'plugins');
const config = (0, config_1.readConfigSync)();
class Command {
constructor() {
this.command = 'synth';
this.describe = 'Synthesizes Kubernetes manifests for all charts in your app.';
this.aliases = ['synthesize'];
this.builder = (args) => args
.option('app', { required: true, default: config?.app, desc: 'Command to use in order to execute cdk8s app', alias: 'a' })
.option('output', { required: false, desc: 'Output directory', alias: 'o' })
.option('stdout', { type: 'boolean', required: false, desc: 'Write synthesized manifests to STDOUT instead of the output directory', alias: 'p' })
.option('plugins-dir', { required: false, desc: 'Directory to store cdk8s plugins.' })
.option('validate', { type: 'boolean', required: false, desc: 'Apply validation plugins on the resulting manifests (use --no-validate to disable)' })
.option('validation-reports-output-file', { required: false, desc: 'File to write a JSON representation of the validation reports to' })
.option('format', { required: false, desc: 'Synthesis format for Kubernetes manifests. The default synthesis format is plain kubernetes manifests.', type: 'string' })
.option('chart-api-version', { required: false, desc: 'Chart API version of helm chart. The default value would be \'v2\' api version when synthesis format is helm. There is no default set when synthesis format is plain.', type: 'string' })
.option('chart-version', { required: false, desc: 'Chart version of helm chart. This is required if synthesis format is helm.' });
}
async handler(argv) {
const command = argv.app;
const stdout = argv.stdout;
const outdir = argv.output ?? config?.output ?? (!stdout ? DEFAULT_OUTPUT_DIR : undefined);
const validate = argv.validate ?? true;
const reportFile = argv.validationReportsOutputFile;
const pluginsDir = argv.pluginsDir ?? config?.pluginsDirectory ?? DEFAULT_PLUGINS_DIR;
const format = argv.format ?? config?.synthConfig?.format ?? config_1.SynthesisFormat.PLAIN;
const chartVersion = argv.chartVersion ?? config?.synthConfig?.chartVersion;
const chartApiVersion = argv.chartApiVersion ?? config?.synthConfig?.chartApiVersion ?? getDefaultChartApiVersion(format);
if (outdir && outdir !== config?.output && stdout) {
throw new Error('\'--output\' and \'--stdout\' are mutually exclusive. Please only use one.');
}
if (outdir) {
fs.rmSync(outdir, { recursive: true, force: true });
}
if (format != config_1.SynthesisFormat.PLAIN && format != config_1.SynthesisFormat.HELM) {
throw new Error(`You need to specify synthesis format either as ${config_1.SynthesisFormat.PLAIN} or ${config_1.SynthesisFormat.HELM} but received: ${format}`);
}
if (chartApiVersion && (chartApiVersion != config_1.HelmChartApiVersion.V1 && chartApiVersion != config_1.HelmChartApiVersion.V2)) {
throw new Error(`You need to specify helm chart api version either as ${config_1.HelmChartApiVersion.V1} or ${config_1.HelmChartApiVersion.V2} but received: ${chartApiVersion}`);
}
if (format === config_1.SynthesisFormat.HELM && !chartVersion) {
throw new Error('You need to specify \'--chart-version\' when \'--format\' is set as \'helm\'.');
}
if (chartVersion && !semver.valid(chartVersion)) {
throw new Error(`The value specified for '--chart-version': ${chartVersion} does not follow SemVer-2(https://semver.org/).`);
}
if (stdout && format === config_1.SynthesisFormat.HELM) {
throw new Error('Helm format synthesis does not support \'stdout\'. Please use \'outdir\' instead.');
}
if (format === config_1.SynthesisFormat.PLAIN && chartApiVersion) {
throw new Error('You need to specify \'--format\' as \'helm\' when \'--chart-api-version\' is set.');
}
if (format === config_1.SynthesisFormat.PLAIN && chartVersion) {
throw new Error('You need to specify \'--format\' as \'helm\' when \'--chart-version\' is set.');
}
if (chartApiVersion === config_1.HelmChartApiVersion.V1 && (0, util_1.crdsArePresent)(config?.imports)) {
throw new Error(`Your application uses CRDs, which are not supported when '--chart-api-version' is set to ${config_1.HelmChartApiVersion.V1}. Please either set '--chart-api-version' to ${config_1.HelmChartApiVersion.V2}, or remove the CRDs from your cdk8s.yaml configuration file`);
}
const validations = validate ? await fetchValidations() : undefined;
const recordConstructMetadata = !(validations == undefined || validations.length == 0);
if (stdout) {
await (0, util_1.mkdtemp)(async (tempDir) => {
const app = await (0, util_1.synthApp)(command, tempDir, stdout, recordConstructMetadata);
for (const f of app.manifests) {
fs.createReadStream(f).pipe(process.stdout);
}
if (validations) {
const pluginManager = new _manager_1.PluginManager(pluginsDir);
await (0, util_1.validateApp)(app, stdout, validations, pluginManager, reportFile);
}
});
}
else {
let manifests;
if (format === config_1.SynthesisFormat.HELM) {
await createHelmScaffolding(chartApiVersion, chartVersion, outdir);
const templateDir = path_1.default.join(outdir, 'templates');
manifests = await (0, util_1.synthApp)(command, templateDir, stdout, recordConstructMetadata);
}
else {
manifests = await (0, util_1.synthApp)(command, outdir, stdout, recordConstructMetadata);
}
if (validations) {
const pluginManager = new _manager_1.PluginManager(pluginsDir);
await (0, util_1.validateApp)(manifests, stdout, validations, pluginManager, reportFile);
}
}
}
}
async function fetchValidations() {
if (typeof (config?.validations) === 'string') {
const content = await (0, util_1.download)(config.validations);
return yaml.parse(content);
}
else {
return config?.validations;
}
}
async function createHelmScaffolding(apiVersion, chartVersion, outdir) {
const tempHelmStructure = createFolderStructure();
const substituteValues = {
apiVersion: apiVersion,
version: chartVersion,
app: path_1.default.basename(path_1.default.resolve()),
};
try {
await (0, sscaff_1.sscaff)(tempHelmStructure, outdir, substituteValues);
}
finally {
fs.rmSync(tempHelmStructure, { recursive: true });
}
if (apiVersion === config_1.HelmChartApiVersion.V2 && (0, util_1.crdsArePresent)(config?.imports)) {
await addCrdsToHelmChart(outdir);
}
function createFolderStructure() {
const root = fs.mkdtempSync(path_1.default.join(os.tmpdir(), 'helm-scaffolding-'));
fs.mkdirSync(path_1.default.join(root, 'templates'));
const chartYamlFile = {
apiVersion: '{{ apiVersion }}',
name: '{{ app }}',
version: '{{ version }}',
description: 'Generated chart for {{ app }}',
type: 'application',
};
fs.outputFileSync(path_1.default.join(root, CHART_YAML_FILE), yaml.stringify(chartYamlFile));
const readmeFile = 'This Helm chart is generated using cdk8s. Any manual changes to the chart would be discarded once cdk8s app is synthesized again with `--format helm`.';
fs.outputFileSync(path_1.default.join(root, README), readmeFile);
return root;
}
}
async function addCrdsToHelmChart(chartDir) {
const crds = (config?.imports ?? []).filter((imprt) => (!(0, util_1.isK8sImport)(imprt) && !(0, util_1.isHelmImport)(imprt)));
for (const crd of crds) {
const importSpec = (0, util_1.parseImports)(crd);
const importedCrdDef = await (0, dispatch_1.matchImporter)(importSpec, process.argv);
const manifest = importedCrdDef.rawManifest;
const filename = (0, util_1.deriveFileName)(importSpec.source);
fs.outputFileSync(path_1.default.join(chartDir, 'crds', `${filename}.yaml`), manifest);
}
}
function getDefaultChartApiVersion(synthFormat) {
return (synthFormat === config_1.SynthesisFormat.HELM) ? config_1.HelmChartApiVersion.V2 : undefined;
}
module.exports = new Command();
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* as os from 'os';\nimport path from 'path';\nimport * as fs from 'fs-extra';\nimport * as semver from 'semver';\nimport { sscaff } from 'sscaff';\nimport * as yaml from 'yaml';\nimport * as yargs from 'yargs';\nimport { HelmChartApiVersion, SynthesisFormat, ValidationConfig, readConfigSync } from '../../config';\nimport { ImportCustomResourceDefinition } from '../../import/crd';\nimport { matchImporter } from '../../import/dispatch';\nimport { PluginManager } from '../../plugins/_manager';\nimport { SynthesizedApp, crdsArePresent, deriveFileName, download, isHelmImport, isK8sImport, mkdtemp, parseImports, synthApp, validateApp } from '../../util';\n\nconst CHART_YAML_FILE = 'Chart.yaml';\nconst README = 'README.md';\nconst DEFAULT_OUTPUT_DIR = 'dist';\nconst DEFAULT_PLUGINS_DIR = path.join(os.homedir(), '.cdk8s', 'plugins');\n\nconst config = readConfigSync();\n\nclass Command implements yargs.CommandModule {\n  public readonly command = 'synth';\n  public readonly describe = 'Synthesizes Kubernetes manifests for all charts in your app.';\n  public readonly aliases = ['synthesize'];\n\n  public readonly builder = (args: yargs.Argv) => args\n    .option('app', { required: true, default: config?.app, desc: 'Command to use in order to execute cdk8s app', alias: 'a' })\n    .option('output', { required: false, desc: 'Output directory', alias: 'o' })\n    .option('stdout', { type: 'boolean', required: false, desc: 'Write synthesized manifests to STDOUT instead of the output directory', alias: 'p' })\n    .option('plugins-dir', { required: false, desc: 'Directory to store cdk8s plugins.' })\n    .option('validate', { type: 'boolean', required: false, desc: 'Apply validation plugins on the resulting manifests (use --no-validate to disable)' })\n    .option('validation-reports-output-file', { required: false, desc: 'File to write a JSON representation of the validation reports to' })\n    .option('format', { required: false, desc: 'Synthesis format for Kubernetes manifests. The default synthesis format is plain kubernetes manifests.', type: 'string' })\n    .option('chart-api-version', { required: false, desc: 'Chart API version of helm chart. The default value would be \\'v2\\' api version when synthesis format is helm. There is no default set when synthesis format is plain.', type: 'string' })\n    .option('chart-version', { required: false, desc: 'Chart version of helm chart. This is required if synthesis format is helm.' });\n\n  public async handler(argv: any) {\n\n    const command = argv.app;\n    const stdout = argv.stdout;\n    const outdir = argv.output ?? config?.output ?? (!stdout ? DEFAULT_OUTPUT_DIR : undefined);\n    const validate = argv.validate ?? true;\n    const reportFile = argv.validationReportsOutputFile;\n    const pluginsDir = argv.pluginsDir ?? config?.pluginsDirectory ?? DEFAULT_PLUGINS_DIR;\n    const format = argv.format ?? config?.synthConfig?.format ?? SynthesisFormat.PLAIN;\n    const chartVersion = argv.chartVersion ?? config?.synthConfig?.chartVersion;\n    const chartApiVersion = argv.chartApiVersion ?? config?.synthConfig?.chartApiVersion ?? getDefaultChartApiVersion(format);\n\n    if (outdir && outdir !== config?.output && stdout) {\n      throw new Error('\\'--output\\' and \\'--stdout\\' are mutually exclusive. Please only use one.');\n    }\n\n    if (outdir) {\n      fs.rmSync(outdir, { recursive: true, force: true });\n    }\n\n    if (format != SynthesisFormat.PLAIN && format != SynthesisFormat.HELM) {\n      throw new Error(`You need to specify synthesis format either as ${SynthesisFormat.PLAIN} or ${SynthesisFormat.HELM} but received: ${format}`);\n    }\n\n    if (chartApiVersion && (chartApiVersion != HelmChartApiVersion.V1 && chartApiVersion != HelmChartApiVersion.V2)) {\n      throw new Error(`You need to specify helm chart api version either as ${HelmChartApiVersion.V1} or ${HelmChartApiVersion.V2} but received: ${chartApiVersion}`);\n    }\n\n    if (format === SynthesisFormat.HELM && !chartVersion) {\n      throw new Error('You need to specify \\'--chart-version\\' when \\'--format\\' is set as \\'helm\\'.');\n    }\n\n    if (chartVersion && !semver.valid(chartVersion)) {\n      throw new Error(`The value specified for '--chart-version': ${chartVersion} does not follow SemVer-2(https://semver.org/).`);\n    }\n\n    if (stdout && format === SynthesisFormat.HELM) {\n      throw new Error('Helm format synthesis does not support \\'stdout\\'. Please use \\'outdir\\' instead.');\n    }\n\n    if (format === SynthesisFormat.PLAIN && chartApiVersion) {\n      throw new Error('You need to specify \\'--format\\' as \\'helm\\' when \\'--chart-api-version\\' is set.');\n    }\n\n    if (format === SynthesisFormat.PLAIN && chartVersion) {\n      throw new Error('You need to specify \\'--format\\' as \\'helm\\' when \\'--chart-version\\' is set.');\n    }\n\n    if (chartApiVersion === HelmChartApiVersion.V1 && crdsArePresent(config?.imports)) {\n      throw new Error(`Your application uses CRDs, which are not supported when '--chart-api-version' is set to ${HelmChartApiVersion.V1}. Please either set '--chart-api-version' to ${HelmChartApiVersion.V2}, or remove the CRDs from your cdk8s.yaml configuration file`);\n    }\n\n    const validations = validate ? await fetchValidations() : undefined;\n    const recordConstructMetadata = !(validations == undefined || validations.length == 0);\n\n    if (stdout) {\n      await mkdtemp(async tempDir => {\n        const app = await synthApp(command, tempDir, stdout, recordConstructMetadata);\n        for (const f of app.manifests) {\n          fs.createReadStream(f).pipe(process.stdout);\n        }\n        if (validations) {\n          const pluginManager = new PluginManager(pluginsDir);\n          await validateApp(app, stdout, validations, pluginManager, reportFile);\n        }\n      });\n    } else {\n      let manifests: SynthesizedApp;\n\n      if (format === SynthesisFormat.HELM) {\n        await createHelmScaffolding(chartApiVersion, chartVersion, outdir);\n        const templateDir = path.join(outdir, 'templates');\n\n        manifests = await synthApp(command, templateDir, stdout, recordConstructMetadata);\n      } else {\n        manifests = await synthApp(command, outdir, stdout, recordConstructMetadata);\n      }\n\n      if (validations) {\n        const pluginManager = new PluginManager(pluginsDir);\n        await validateApp(manifests, stdout, validations, pluginManager, reportFile);\n      }\n    }\n  }\n\n}\n\nasync function fetchValidations(): Promise<ValidationConfig[] | undefined> {\n  if (typeof(config?.validations) === 'string') {\n    const content = await download(config.validations);\n    return yaml.parse(content) as ValidationConfig[];\n  } else {\n    return config?.validations;\n  }\n}\n\nasync function createHelmScaffolding(apiVersion: string, chartVersion: string, outdir: string) {\n  const tempHelmStructure = createFolderStructure();\n\n  const substituteValues = {\n    apiVersion: apiVersion,\n    version: chartVersion,\n    app: path.basename(path.resolve()),\n  };\n\n  try {\n    await sscaff(tempHelmStructure, outdir, substituteValues);\n  } finally {\n    fs.rmSync(tempHelmStructure, { recursive: true });\n  }\n\n\n  if (apiVersion === HelmChartApiVersion.V2 && crdsArePresent(config?.imports)) {\n    await addCrdsToHelmChart(outdir);\n  }\n\n  function createFolderStructure(): string {\n    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'helm-scaffolding-'));\n\n    fs.mkdirSync(path.join(root, 'templates'));\n\n    const chartYamlFile = {\n      apiVersion: '{{ apiVersion }}',\n      name: '{{ app }}',\n      version: '{{ version }}',\n      description: 'Generated chart for {{ app }}',\n      type: 'application',\n    };\n\n    fs.outputFileSync(path.join(root, CHART_YAML_FILE), yaml.stringify(chartYamlFile));\n\n    const readmeFile = 'This Helm chart is generated using cdk8s. Any manual changes to the chart would be discarded once cdk8s app is synthesized again with `--format helm`.';\n\n    fs.outputFileSync(path.join(root, README), readmeFile);\n\n    return root;\n  }\n}\n\nasync function addCrdsToHelmChart(chartDir: string) {\n  const crds = (config?.imports ?? []).filter((imprt) => (!isK8sImport(imprt) && !isHelmImport(imprt)));\n\n  for (const crd of crds) {\n    const importSpec = parseImports(crd);\n    const importedCrdDef = await matchImporter(importSpec, process.argv) as ImportCustomResourceDefinition;\n    const manifest = importedCrdDef.rawManifest;\n\n    const filename = deriveFileName(importSpec.source);\n\n    fs.outputFileSync(path.join(chartDir, 'crds', `${filename}.yaml`), manifest);\n  }\n}\n\nfunction getDefaultChartApiVersion(synthFormat: string): string | undefined {\n  return (synthFormat === SynthesisFormat.HELM) ? HelmChartApiVersion.V2: undefined;\n}\n\nmodule.exports = new Command();"]}