feat(phase-5): WS5 — Developer Experience
Implements scaffold ZIP generator, Stoplight Elements API explorer, and CLI scaffold command: Scaffold API: - 25 template files for TypeScript/Python/Go/Java/Rust in src/templates/scaffold/ - ScaffoldService: in-memory ZIP via archiver, variable injection (AGENT_ID/NAME/CLIENT_ID/API_URL) - ScaffoldController: tenant ownership check (403), language validation (400), ZIP stream response - Route GET /sdk/scaffold/:agentId with rate limiter (10 req/min per tenant) - Prometheus: scaffold_generated_total + scaffold_generation_duration_ms histogram Portal: - Replaced swagger-ui-react with @stoplight/elements API component - Dynamic import (ssr: false) for browser-only DOM dependency - Type declarations for @stoplight/elements and CSS module CLI: - sentryagent scaffold --agent-id <id> [--language typescript] [--out .] - Raw fetch for binary ZIP stream → unzipper.Extract() → prints next steps - Human-readable 400/403/404 error messages Tests: 19 tests (unit + integration), ScaffoldService 80%+ branch coverage Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
SentryAgent.ai Developer
173
cli/src/commands/scaffold.ts
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173
cli/src/commands/scaffold.ts
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import * as fs from 'fs';
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import * as path from 'path';
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import { Command } from 'commander';
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import chalk from 'chalk';
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import unzipper from 'unzipper';
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import { requireConfig } from '../config';
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const VALID_LANGUAGES = ['typescript', 'python', 'go', 'java', 'rust'] as const;
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type ScaffoldLanguage = (typeof VALID_LANGUAGES)[number];
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function isValidLanguage(lang: string): lang is ScaffoldLanguage {
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return (VALID_LANGUAGES as readonly string[]).includes(lang);
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}
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export function registerScaffold(program: Command): void {
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program
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.command('scaffold')
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.description('Download a starter project scaffold pre-wired with your agent credentials')
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.requiredOption('--agent-id <id>', 'Agent ID to scaffold for')
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.option(
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'--language <lang>',
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`SDK language (${VALID_LANGUAGES.join(', ')})`,
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'typescript',
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)
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.option('--out <directory>', 'Output directory for the extracted scaffold', '.')
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.action(async (opts: { agentId: string; language: string; out: string }) => {
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const { agentId, language, out: outDir } = opts;
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if (!isValidLanguage(language)) {
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console.error(
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chalk.red('Error:'),
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`Unsupported language '${language}'. Choose: ${VALID_LANGUAGES.join(', ')}`,
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);
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process.exit(1);
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}
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const config = requireConfig();
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// Resolve and create output directory
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const resolvedOut = path.resolve(outDir);
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if (!fs.existsSync(resolvedOut)) {
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fs.mkdirSync(resolvedOut, { recursive: true });
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}
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console.log(
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chalk.dim(`Downloading ${language} scaffold for agent ${agentId}...`),
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);
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try {
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// We need a raw binary response — fetch the token via apiRequest pattern
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// then make a raw fetch for the ZIP stream.
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const token = await getToken(config);
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const url = `${config.apiUrl}/sdk/scaffold/${encodeURIComponent(agentId)}?language=${encodeURIComponent(language)}`;
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const res = await fetch(url, {
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headers: { Authorization: `Bearer ${token}` },
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});
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if (!res.ok) {
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const text = await res.text();
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handleHttpError(res.status, text);
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process.exit(1);
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}
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if (res.body === null) {
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console.error(chalk.red('Error:'), 'Empty response body from server.');
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process.exit(1);
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}
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// Pipe the response body through unzipper into the output directory
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await new Promise<void>((resolve, reject) => {
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const nodeStream = streamFromWeb(res.body!);
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nodeStream
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.pipe(unzipper.Extract({ path: resolvedOut }))
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.on('close', resolve)
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.on('error', reject);
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});
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console.log(chalk.green('Scaffold extracted to:'), chalk.bold(resolvedOut));
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console.log('');
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console.log('Next steps:');
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console.log(
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` 1. ${chalk.cyan('cd')} ${resolvedOut}`,
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);
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if (language === 'typescript') {
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console.log(` 2. ${chalk.cyan('npm install')}`);
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console.log(` 3. Copy ${chalk.yellow('.env.example')} to ${chalk.yellow('.env')} and fill in your client secret`);
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console.log(` 4. ${chalk.cyan('npm run dev')}`);
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} else if (language === 'python') {
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console.log(` 2. ${chalk.cyan('pip install -r requirements.txt')}`);
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console.log(` 3. Copy ${chalk.yellow('.env.example')} to ${chalk.yellow('.env')} and fill in your client secret`);
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console.log(` 4. ${chalk.cyan('python main.py')}`);
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} else if (language === 'go') {
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console.log(` 2. ${chalk.cyan('go mod download')}`);
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console.log(` 3. Copy ${chalk.yellow('.env.example')} to ${chalk.yellow('.env')} and fill in your client secret`);
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console.log(` 4. ${chalk.cyan('go run main.go')}`);
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} else if (language === 'java') {
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console.log(` 2. ${chalk.cyan('mvn install')}`);
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console.log(` 3. Copy ${chalk.yellow('.env.example')} to ${chalk.yellow('.env')} and fill in your client secret`);
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console.log(` 4. ${chalk.cyan('mvn exec:java')}`);
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} else if (language === 'rust') {
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console.log(` 2. Copy ${chalk.yellow('.env.example')} to ${chalk.yellow('.env')} and fill in your client secret`);
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console.log(` 3. ${chalk.cyan('cargo run')}`);
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}
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} catch (err) {
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console.error(
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chalk.red('Error:'),
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err instanceof Error ? err.message : String(err),
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);
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process.exit(1);
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}
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});
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}
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/** Obtain a bearer token by making a dummy apiRequest that uses the token cache. */
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async function getToken(config: import('../config').Config): Promise<string> {
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// apiRequest internally calls fetchToken which caches tokens.
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// We retrieve the token by triggering any valid request, but that's wasteful.
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// Instead, duplicate the token fetch logic inline to avoid making an extra API call.
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const body = new URLSearchParams({
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grant_type: 'client_credentials',
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client_id: config.clientId,
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client_secret: config.clientSecret,
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});
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const res = await fetch(`${config.apiUrl}/oauth2/token`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: body.toString(),
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});
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if (!res.ok) {
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const text = await res.text();
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throw new Error(`Authentication failed (${res.status}): ${text}`);
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}
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const data = (await res.json()) as { access_token: string };
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return data.access_token;
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}
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function handleHttpError(status: number, body: string): void {
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if (status === 400) {
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console.error(chalk.red('Error:'), `Invalid request: ${body}`);
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} else if (status === 401) {
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console.error(
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chalk.red('Error:'),
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'Authentication failed. Run `sentryagent configure` to update credentials.',
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);
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} else if (status === 403) {
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console.error(
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chalk.red('Error:'),
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'Access denied. You do not own this agent.',
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);
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} else if (status === 404) {
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console.error(
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chalk.red('Error:'),
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'Agent not found. Check the agent ID with `sentryagent list-agents`.',
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);
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} else {
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console.error(chalk.red('Error:'), `Server error (${status}): ${body}`);
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}
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}
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/**
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* Converts a WHATWG ReadableStream (from fetch) to a Node.js Readable stream.
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* Node 18+ supports ReadableStream natively via stream.Readable.fromWeb().
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*/
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function streamFromWeb(webStream: ReadableStream<Uint8Array>): NodeJS.ReadableStream {
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// Node.js 18+ has stream.Readable.fromWeb
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// eslint-disable-next-line @typescript-eslint/no-require-imports
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const { Readable } = require('stream') as typeof import('stream');
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return Readable.fromWeb(webStream as Parameters<typeof Readable.fromWeb>[0]) as NodeJS.ReadableStream;
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}
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