@cloudsnorkel/cdk-github-runners
Version:
CDK construct to create GitHub Actions self-hosted runners. Creates ephemeral runners on demand. Easy to deploy and highly customizable.
181 lines • 22 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.loadOctokitRest = loadOctokitRest;
exports.loadOctokitCore = loadOctokitCore;
exports.loadOctokitAuthApp = loadOctokitAuthApp;
exports.baseUrlFromDomain = baseUrlFromDomain;
exports.getOctokit = getOctokit;
exports.getAppOctokit = getAppOctokit;
exports.getRunner = getRunner;
exports.deleteRunner = deleteRunner;
exports.redeliver = redeliver;
const crypto_1 = require("crypto");
const lambda_helpers_1 = require("./lambda-helpers");
let restModulePromise;
let coreModulePromise;
let authAppModulePromise;
function loadOctokitRest() {
return (restModulePromise ?? (restModulePromise = Promise.resolve().then(() => require('@octokit/rest'))));
}
function loadOctokitCore() {
return (coreModulePromise ?? (coreModulePromise = Promise.resolve().then(() => require('@octokit/core'))));
}
function loadOctokitAuthApp() {
return (authAppModulePromise ?? (authAppModulePromise = Promise.resolve().then(() => require('@octokit/auth-app'))));
}
// ---- Other helpers ----
function baseUrlFromDomain(domain) {
if (domain == 'github.com') {
return 'https://api.github.com';
}
return `https://${domain}/api/v3`;
}
const octokitCache = new Map();
async function getOctokit(installationId) {
if (!process.env.GITHUB_SECRET_ARN || !process.env.GITHUB_PRIVATE_KEY_SECRET_ARN) {
throw new Error('Missing environment variables');
}
const [{ Octokit }, { createAppAuth }] = await Promise.all([
loadOctokitRest(),
loadOctokitAuthApp(),
]);
const githubSecrets = await (0, lambda_helpers_1.getSecretJsonValue)(process.env.GITHUB_SECRET_ARN);
// Create cache key from installation ID and secrets (hash to avoid exposing sensitive data by accident)
const cacheKey = (0, crypto_1.createHash)('sha256').update(`${installationId || 'no-install'}-${githubSecrets.domain}-${githubSecrets.appId}-${githubSecrets.personalAuthToken}`).digest('hex');
const cached = octokitCache.get(cacheKey);
if (cached) {
try {
// Test if the cached octokit is still valid
await cached.rest.meta.getOctocat();
console.log({
notice: 'Using cached octokit',
});
return {
octokit: cached,
githubSecrets,
};
}
catch (e) {
console.log({
notice: 'Octokit cache is invalid',
error: e,
});
octokitCache.delete(cacheKey);
}
}
const baseUrl = baseUrlFromDomain(githubSecrets.domain);
let token;
if (githubSecrets.personalAuthToken) {
token = githubSecrets.personalAuthToken;
}
else {
const privateKey = await (0, lambda_helpers_1.getSecretValue)(process.env.GITHUB_PRIVATE_KEY_SECRET_ARN);
const appOctokit = new Octokit({
baseUrl,
authStrategy: createAppAuth,
auth: {
appId: githubSecrets.appId,
privateKey: privateKey,
},
});
token = (await appOctokit.auth({
type: 'installation',
installationId: installationId,
})).token;
}
const octokit = new Octokit({
baseUrl,
auth: token,
});
// Store in cache
octokitCache.set(cacheKey, octokit);
return {
octokit,
githubSecrets,
};
}
// This function is used to get the Octokit instance for the app itself, not for a specific installation.
// With PAT authentication, it returns undefined.
async function getAppOctokit() {
if (!process.env.GITHUB_SECRET_ARN || !process.env.GITHUB_PRIVATE_KEY_SECRET_ARN) {
throw new Error('Missing environment variables');
}
const [{ Octokit }, { createAppAuth }] = await Promise.all([
loadOctokitRest(),
loadOctokitAuthApp(),
]);
const githubSecrets = await (0, lambda_helpers_1.getSecretJsonValue)(process.env.GITHUB_SECRET_ARN);
const baseUrl = baseUrlFromDomain(githubSecrets.domain);
if (githubSecrets.personalAuthToken || !githubSecrets.appId) {
return undefined;
}
const privateKey = await (0, lambda_helpers_1.getSecretValue)(process.env.GITHUB_PRIVATE_KEY_SECRET_ARN);
return new Octokit({
baseUrl,
authStrategy: createAppAuth,
auth: {
appId: githubSecrets.appId,
privateKey: privateKey,
},
});
}
async function getRunner(octokit, runnerLevel, owner, repo, name) {
let page = 1;
while (true) {
let runners;
if ((runnerLevel ?? 'repo') === 'repo') {
runners = await octokit.rest.actions.listSelfHostedRunnersForRepo({
name: name,
page: page,
owner: owner,
repo: repo,
});
}
else {
runners = await octokit.rest.actions.listSelfHostedRunnersForOrg({
name: name,
page: page,
org: owner,
});
}
if (runners.data.runners.length == 0) {
return;
}
for (const runner of runners.data.runners) {
// we filter by name in the API call, but still double-check here
// this is for backward compatibility with old GHES instances that may not support the name filter
if (runner.name == name) {
return runner;
}
}
page++;
}
}
async function deleteRunner(octokit, runnerLevel, owner, repo, runnerId) {
if ((runnerLevel ?? 'repo') === 'repo') {
await octokit.rest.actions.deleteSelfHostedRunnerFromRepo({
owner: owner,
repo: repo,
runner_id: runnerId,
});
}
else {
await octokit.rest.actions.deleteSelfHostedRunnerFromOrg({
org: owner,
runner_id: runnerId,
});
}
}
async function redeliver(octokit, deliveryId) {
const response = await octokit.rest.apps.redeliverWebhookDelivery({
delivery_id: deliveryId,
});
if (response.status !== 202) {
throw new Error(`Failed to redeliver webhook delivery with ID ${deliveryId}`);
}
console.log({
notice: 'Successfully redelivered webhook delivery',
deliveryId,
});
}
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AAC","sourcesContent":["import { createHash } from 'crypto';\nimport type { Octokit as RestOctokit } from '@octokit/rest';\nimport { getSecretJsonValue, getSecretValue } from './lambda-helpers';\n\n// ---- Octokit ESM loader helpers (inlined) ----\n// Octokit packages are ESM, but our Lambda assets are bundled into CJS.\n// Using dynamic `import()` here lets esbuild include Octokit in the bundle.\ntype OctokitRestModule = typeof import('@octokit/rest');\ntype OctokitCoreModule = typeof import('@octokit/core');\ntype OctokitAuthAppModule = typeof import('@octokit/auth-app');\n\nlet restModulePromise: Promise<OctokitRestModule> | undefined;\nlet coreModulePromise: Promise<OctokitCoreModule> | undefined;\nlet authAppModulePromise: Promise<OctokitAuthAppModule> | undefined;\n\nexport function loadOctokitRest(): Promise<OctokitRestModule> {\n  return (restModulePromise ??= import('@octokit/rest') as Promise<OctokitRestModule>);\n}\n\nexport function loadOctokitCore(): Promise<OctokitCoreModule> {\n  return (coreModulePromise ??= import('@octokit/core') as Promise<OctokitCoreModule>);\n}\n\nexport function loadOctokitAuthApp(): Promise<OctokitAuthAppModule> {\n  return (authAppModulePromise ??= import('@octokit/auth-app') as Promise<OctokitAuthAppModule>);\n}\n\n// ---- Other helpers ----\n\nexport function baseUrlFromDomain(domain: string): string {\n  if (domain == 'github.com') {\n    return 'https://api.github.com';\n  }\n  return `https://${domain}/api/v3`;\n}\n\ntype RunnerLevel = 'repo' | 'org' | undefined; // undefined is for backwards compatibility and should be treated as 'repo'\n\nexport interface GitHubSecrets {\n  domain: string;\n  appId: number;\n  personalAuthToken: string;\n  runnerLevel: RunnerLevel;\n}\n\nconst octokitCache = new Map<string, RestOctokit>();\n\nexport async function getOctokit(installationId?: number): Promise<{ octokit: RestOctokit; githubSecrets: GitHubSecrets }> {\n  if (!process.env.GITHUB_SECRET_ARN || !process.env.GITHUB_PRIVATE_KEY_SECRET_ARN) {\n    throw new Error('Missing environment variables');\n  }\n\n  const [{ Octokit }, { createAppAuth }] = await Promise.all([\n    loadOctokitRest(),\n    loadOctokitAuthApp(),\n  ]);\n\n  const githubSecrets: GitHubSecrets = await getSecretJsonValue(process.env.GITHUB_SECRET_ARN);\n\n  // Create cache key from installation ID and secrets (hash to avoid exposing sensitive data by accident)\n  const cacheKey = createHash('sha256').update(`${installationId || 'no-install'}-${githubSecrets.domain}-${githubSecrets.appId}-${githubSecrets.personalAuthToken}`).digest('hex');\n\n  const cached = octokitCache.get(cacheKey);\n  if (cached) {\n    try {\n      // Test if the cached octokit is still valid\n      await cached.rest.meta.getOctocat();\n      console.log({\n        notice: 'Using cached octokit',\n      });\n      return {\n        octokit: cached,\n        githubSecrets,\n      };\n    } catch (e) {\n      console.log({\n        notice: 'Octokit cache is invalid',\n        error: e,\n      });\n      octokitCache.delete(cacheKey);\n    }\n  }\n\n  const baseUrl = baseUrlFromDomain(githubSecrets.domain);\n\n  let token;\n  if (githubSecrets.personalAuthToken) {\n    token = githubSecrets.personalAuthToken;\n  } else {\n    const privateKey = await getSecretValue(process.env.GITHUB_PRIVATE_KEY_SECRET_ARN);\n\n    const appOctokit = new Octokit({\n      baseUrl,\n      authStrategy: createAppAuth,\n      auth: {\n        appId: githubSecrets.appId,\n        privateKey: privateKey,\n      },\n    });\n\n    token = (await appOctokit.auth({\n      type: 'installation',\n      installationId: installationId,\n    }) as any).token;\n  }\n\n  const octokit = new Octokit({\n    baseUrl,\n    auth: token,\n  });\n\n  // Store in cache\n  octokitCache.set(cacheKey, octokit);\n\n  return {\n    octokit,\n    githubSecrets,\n  };\n}\n\n// This function is used to get the Octokit instance for the app itself, not for a specific installation.\n// With PAT authentication, it returns undefined.\nexport async function getAppOctokit() {\n  if (!process.env.GITHUB_SECRET_ARN || !process.env.GITHUB_PRIVATE_KEY_SECRET_ARN) {\n    throw new Error('Missing environment variables');\n  }\n\n  const [{ Octokit }, { createAppAuth }] = await Promise.all([\n    loadOctokitRest(),\n    loadOctokitAuthApp(),\n  ]);\n\n  const githubSecrets: GitHubSecrets = await getSecretJsonValue(process.env.GITHUB_SECRET_ARN);\n  const baseUrl = baseUrlFromDomain(githubSecrets.domain);\n\n  if (githubSecrets.personalAuthToken || !githubSecrets.appId) {\n    return undefined;\n  }\n\n  const privateKey = await getSecretValue(process.env.GITHUB_PRIVATE_KEY_SECRET_ARN);\n\n  return new Octokit({\n    baseUrl,\n    authStrategy: createAppAuth,\n    auth: {\n      appId: githubSecrets.appId,\n      privateKey: privateKey,\n    },\n  });\n}\n\nexport async function getRunner(octokit: RestOctokit, runnerLevel: RunnerLevel, owner: string, repo: string, name: string) {\n  let page = 1;\n  while (true) {\n    let runners;\n\n    if ((runnerLevel ?? 'repo') === 'repo') {\n      runners = await octokit.rest.actions.listSelfHostedRunnersForRepo({\n        name: name,\n        page: page,\n        owner: owner,\n        repo: repo,\n      });\n    } else {\n      runners = await octokit.rest.actions.listSelfHostedRunnersForOrg({\n        name: name,\n        page: page,\n        org: owner,\n      });\n    }\n\n    if (runners.data.runners.length == 0) {\n      return;\n    }\n\n    for (const runner of runners.data.runners) {\n      // we filter by name in the API call, but still double-check here\n      // this is for backward compatibility with old GHES instances that may not support the name filter\n      if (runner.name == name) {\n        return runner;\n      }\n    }\n\n    page++;\n  }\n}\n\nexport async function deleteRunner(octokit: RestOctokit, runnerLevel: RunnerLevel, owner: string, repo: string, runnerId: number) {\n  if ((runnerLevel ?? 'repo') === 'repo') {\n    await octokit.rest.actions.deleteSelfHostedRunnerFromRepo({\n      owner: owner,\n      repo: repo,\n      runner_id: runnerId,\n    });\n  } else {\n    await octokit.rest.actions.deleteSelfHostedRunnerFromOrg({\n      org: owner,\n      runner_id: runnerId,\n    });\n  }\n}\n\nexport async function redeliver(octokit: RestOctokit, deliveryId: number) {\n  const response = await octokit.rest.apps.redeliverWebhookDelivery({\n    delivery_id: deliveryId,\n  });\n\n  if (response.status !== 202) {\n    throw new Error(`Failed to redeliver webhook delivery with ID ${deliveryId}`);\n  }\n  console.log({\n    notice: 'Successfully redelivered webhook delivery',\n    deliveryId,\n  });\n}\n"]}