import * as assert from 'assert' import * as core from '@actions/core' import * as fs from 'fs' import * as github from '@actions/github' import * as io from '@actions/io' import * as path from 'path' import * as retryHelper from './retry-helper' import * as toolCache from '@actions/tool-cache' import {default as uuid} from 'uuid/v4' import {Octokit} from '@octokit/rest' const IS_WINDOWS = process.platform === 'win32' export async function downloadRepository( authToken: string, owner: string, repo: string, ref: string, commit: string, repositoryPath: string ): Promise<void> { // Determine the default branch if (!ref && !commit) { core.info('Determining the default branch') ref = await getDefaultBranch(authToken, owner, repo) } // Download the archive let archiveData = await retryHelper.execute(async () => { core.info('Downloading the archive') return await downloadArchive(authToken, owner, repo, ref, commit) }) // Write archive to disk core.info('Writing archive to disk') const uniqueId = uuid() const archivePath = path.join(repositoryPath, `${uniqueId}.tar.gz`) await fs.promises.writeFile(archivePath, archiveData) archiveData = Buffer.from('') // Free memory // Extract archive core.info('Extracting the archive') const extractPath = path.join(repositoryPath, uniqueId) await io.mkdirP(extractPath) if (IS_WINDOWS) { await toolCache.extractZip(archivePath, extractPath) } else { await toolCache.extractTar(archivePath, extractPath) } await io.rmRF(archivePath) // Determine the path of the repository content. The archive contains // a top-level folder and the repository content is inside. const archiveFileNames = await fs.promises.readdir(extractPath) assert.ok( archiveFileNames.length == 1, 'Expected exactly one directory inside archive' ) const archiveVersion = archiveFileNames[0] // The top-level folder name includes the short SHA core.info(`Resolved version ${archiveVersion}`) const tempRepositoryPath = path.join(extractPath, archiveVersion) // Move the files for (const fileName of await fs.promises.readdir(tempRepositoryPath)) { const sourcePath = path.join(tempRepositoryPath, fileName) const targetPath = path.join(repositoryPath, fileName) if (IS_WINDOWS) { await io.cp(sourcePath, targetPath, {recursive: true}) // Copy on Windows (Windows Defender may have a lock) } else { await io.mv(sourcePath, targetPath) } } await io.rmRF(extractPath) } /** * Looks up the default branch name */ export async function getDefaultBranch( authToken: string, owner: string, repo: string ): Promise<string> { return await retryHelper.execute(async () => { core.info('Retrieving the default branch name') const octokit = new github.GitHub(authToken) let result: string try { // Get the default branch from the repo info const response = await octokit.repos.get({owner, repo}) result = response.data.default_branch assert.ok(result, 'default_branch cannot be empty') } catch (err) { // Handle .wiki repo if ( (err as any)?.status === 404 && repo.toUpperCase().endsWith('.WIKI') ) { result = 'master' } // Otherwise error else { throw err } } // Print the default branch core.info(`Default branch '${result}'`) // Prefix with 'refs/heads' if (!result.startsWith('refs/')) { result = `refs/heads/${result}` } return result }) } async function downloadArchive( authToken: string, owner: string, repo: string, ref: string, commit: string ): Promise<Buffer> { const octokit = new github.GitHub(authToken) const params: Octokit.ReposGetArchiveLinkParams = { owner: owner, repo: repo, archive_format: IS_WINDOWS ? 'zipball' : 'tarball', ref: commit || ref } const response = await octokit.repos.getArchiveLink(params) if (response.status != 200) { throw new Error( `Unexpected response from GitHub API. Status: ${response.status}, Data: ${response.data}` ) } return Buffer.from(response.data) // response.data is ArrayBuffer }