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chore(spec2cdk): fix cli not working for single services (#27892)
Fixes an issue with the CLI version of `spec2cdk` not working for single services anymore. This used to be implicitly tested by being included in the hot path. However after a refactor, we were not using it anymore and thus didn't notice the breaking. Added a test to ensure future functionality. Replaced to custom options parser with Node's built-in parser for increased usability and support for list options (calling the same option multiple time). ---- *By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| import * as path from 'node:path'; | ||
| import { parseArgs } from 'node:util'; | ||
| import { PositionalArg, showHelp } from './help'; | ||
| import { GenerateModuleMap, PatternKeys, generate, generateAll } from '../generate'; | ||
| import { log, parsePattern } from '../util'; | ||
|
|
||
| const command = 'spec2cdk'; | ||
| const args: PositionalArg[] = [{ | ||
| name: 'output-path', | ||
| required: true, | ||
| description: 'The directory the generated code will be written to', | ||
| }]; | ||
| const config = { | ||
| 'help': { | ||
| short: 'h', | ||
| type: 'boolean', | ||
| description: 'Show this help', | ||
| }, | ||
| 'debug': { | ||
| type: 'boolean', | ||
| description: 'Show additional debug output', | ||
| }, | ||
| 'pattern': { | ||
| type: 'string', | ||
| default: '%moduleName%/%serviceShortName%.generated.ts', | ||
| description: 'File and path pattern for generated files', | ||
| }, | ||
| 'augmentations': { | ||
| type: 'string', | ||
| default: '%moduleName%/%serviceShortName%-augmentations.generated.ts', | ||
| description: 'File and path pattern for generated augmentations files', | ||
| }, | ||
| 'metrics': { | ||
| type: 'string', | ||
| default: '%moduleName%/%serviceShortName%-canned-metrics.generated.ts', | ||
| description: 'File and path pattern for generated canned metrics files ', | ||
| }, | ||
| 'service': { | ||
| short: 's', | ||
| type: 'string', | ||
| description: 'Generate files only for a specific service, e.g. AWS::S3', | ||
| multiple: true, | ||
| }, | ||
| 'clear-output': { | ||
| type: 'boolean', | ||
| default: false, | ||
| description: 'Completely delete the output path before generating new files', | ||
| }, | ||
| 'augmentations-support': { | ||
| type: 'boolean', | ||
| default: false, | ||
| description: 'Generates additional files required for augmentation files to compile. Use for testing only', | ||
| }, | ||
| } as const; | ||
|
|
||
| const helpText = `Path patterns can use the following variables: | ||
| %moduleName% The name of the module, e.g. aws-lambda | ||
| %serviceName% The full name of the service, e.g. aws-lambda | ||
| %serviceShortName% The short name of the service, e.g. lambda | ||
| Note that %moduleName% and %serviceName% can be different if multiple services are generated into a single module.`; | ||
|
|
||
| const help = () => showHelp(command, args, config, helpText); | ||
| export const shortHelp = () => showHelp(command, args); | ||
|
|
||
| export async function main(argv: string[]) { | ||
| const { | ||
| positionals, | ||
| values: options, | ||
| } = parseArgs({ | ||
| args: argv, | ||
| allowPositionals: true, | ||
| options: config, | ||
| }); | ||
|
|
||
| if (options.help) { | ||
| help(); | ||
| return; | ||
| } | ||
|
|
||
| if (options.debug) { | ||
| process.env.DEBUG = '1'; | ||
| } | ||
| log.debug('CLI args', positionals, options); | ||
|
|
||
| const outputDir = positionals[0]; | ||
| if (!outputDir) { | ||
| throw new EvalError('Please specify the output-path'); | ||
| } | ||
|
|
||
| const pss: Record<PatternKeys, true> = { moduleName: true, serviceName: true, serviceShortName: true }; | ||
|
|
||
| const outputPath = outputDir ?? path.join(__dirname, '..', 'services'); | ||
| const resourceFilePattern = parsePattern( | ||
| stringOr(options.pattern, path.join('%moduleName%', '%serviceShortName%.generated.ts')), | ||
| pss, | ||
| ); | ||
|
|
||
| const augmentationsFilePattern = parsePattern( | ||
| stringOr(options.augmentations, path.join('%moduleName%', '%serviceShortName%-augmentations.generated.ts')), | ||
| pss, | ||
| ); | ||
|
|
||
| const cannedMetricsFilePattern = parsePattern( | ||
| stringOr(options.metrics, path.join('%moduleName%', '%serviceShortName%-canned-metrics.generated.ts')), | ||
| pss, | ||
| ); | ||
|
|
||
| const generatorOptions = { | ||
| outputPath, | ||
| filePatterns: { | ||
| resources: resourceFilePattern, | ||
| augmentations: augmentationsFilePattern, | ||
| cannedMetrics: cannedMetricsFilePattern, | ||
| }, | ||
| clearOutput: options['clear-output'], | ||
| augmentationsSupport: options['augmentations-support'], | ||
| debug: options.debug as boolean, | ||
| }; | ||
|
|
||
| if (options.service?.length) { | ||
| const moduleMap: GenerateModuleMap = {}; | ||
| for (const service of options.service) { | ||
| if (!service.includes('::')) { | ||
| throw new EvalError(`Each service must be in the form <Partition>::<Service>, e.g. AWS::S3. Got: ${service}`); | ||
| } | ||
| moduleMap[service.toLocaleLowerCase().split('::').join('-')] = { services: [service] }; | ||
| } | ||
| await generate(moduleMap, generatorOptions); | ||
| return; | ||
| } | ||
|
|
||
| await generateAll(generatorOptions); | ||
| } | ||
|
|
||
| function stringOr(pat: unknown, def: string) { | ||
| if (!pat) { | ||
| return def; | ||
| } | ||
| if (typeof pat !== 'string') { | ||
| throw new Error(`Expected string, got: ${JSON.stringify(pat)}`); | ||
| } | ||
| return pat; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /* eslint-disable no-console */ | ||
|
|
||
| export interface PositionalArg { | ||
| name: string; | ||
| description?: string; | ||
| required?: boolean | ||
| } | ||
|
|
||
| export interface Option { | ||
| type: 'string' | 'boolean', | ||
| short?: string; | ||
| default?: string | boolean; | ||
| multiple?: boolean; | ||
| description?: string; | ||
| } | ||
|
|
||
| const TAB = ' '.repeat(4); | ||
|
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| export function showHelp(command: string, args: PositionalArg[] = [], options: { | ||
| [longOption: string]: Option | ||
| } = {}, text?: string) { | ||
| console.log('Usage:'); | ||
| console.log(`${TAB}${command} ${renderArgsList(args)} [--option=value]`); | ||
|
|
||
| const leftColSize = 6 + longest([ | ||
| ...args.map(a => a.name), | ||
| ...Object.entries(options).map(([name, def]) => renderOptionName(name, def.short)), | ||
| ]); | ||
|
|
||
| if (args.length) { | ||
| console.log('\nArguments:'); | ||
| for (const arg of args) { | ||
| console.log(`${TAB}${arg.name.toLocaleUpperCase().padEnd(leftColSize)}\t${arg.description}`); | ||
| } | ||
| } | ||
|
|
||
| if (Object.keys(options).length) { | ||
| console.log('\nOptions:'); | ||
| const ordered = Object.entries(options).sort(([a], [b]) => a.localeCompare(b)); | ||
| for (const [option, def] of ordered) { | ||
| console.log(`${TAB}${renderOptionName(option, def.short).padEnd(leftColSize)}\t${renderOptionText(def)}`); | ||
| } | ||
| } | ||
| console.log(); | ||
|
|
||
| if (text) { | ||
| console.log(text + '\n'); | ||
| } | ||
| } | ||
|
|
||
| function renderArgsList(args: PositionalArg[] = []) { | ||
| return args.map(arg => { | ||
| const brackets = arg.required ? ['<', '>'] : ['[', ']']; | ||
| return `${brackets[0]}${arg.name.toLocaleUpperCase()}${brackets[1]}`; | ||
| }).join(' '); | ||
| } | ||
|
|
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| function renderOptionName(option: string, short?: string): string { | ||
| if (short) { | ||
| return `-${short}, --${option}`; | ||
| } | ||
|
|
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| return `${' '.repeat(4)}--${option}`; | ||
| } | ||
|
|
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| function renderOptionText(def: Option): string { | ||
| const out = new Array<string>; | ||
|
|
||
| out.push(`[${def.multiple ? 'array' : def.type}]`); | ||
|
|
||
| if (def.default) { | ||
| out.push(` [default: ${def.default}]`); | ||
| } | ||
| if (def.description) { | ||
| out.push(`\n${TAB.repeat(2)} ${def.description}`); | ||
| } | ||
|
|
||
| return out.join(''); | ||
| } | ||
|
|
||
| function longest(xs: string[]): number { | ||
| return xs.sort((a, b) => b.length - a.length).at(0)?.length ?? 0; | ||
| } |
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