import * as tc from '@actions/tool-cache'; import * as path from 'path'; import * as semver from 'semver'; import * as httpm from '@actions/http-client'; import * as sys from './system'; export async function downloadGo( versionSpec: string, stable: boolean ): Promise { let toolPath: string | undefined; try { let match: IGoVersion | undefined = await findMatch(versionSpec, stable); if (match) { // download let downloadUrl: string = `https://storage.googleapis.com/golang/${match.files[0]}`; let downloadPath: string = await tc.downloadTool(downloadUrl); // extract let extPath: string = sys.getPlatform() == 'windows' ? await tc.extractZip(downloadPath) : await tc.extractTar(downloadPath); // extracts with a root folder that matches the fileName downloaded const toolRoot = path.join(extPath, 'go'); toolPath = await tc.cacheDir(toolRoot, 'go', versionSpec); } } catch (error) { throw `Failed to download version ${versionSpec}: ${error}`; } return toolPath; } export interface IGoVersionFile { filename: string; // darwin, linux, windows os: string; arch: string; } export interface IGoVersion { version: string; stable: boolean; files: IGoVersionFile[]; } export async function findMatch( versionSpec: string, stable: boolean ): Promise { let archFilter = sys.getArch(); let platFilter = sys.getPlatform(); let match: IGoVersion | undefined; const dlUrl: string = 'https://golang.org/dl/?mode=json&include=all'; // this returns versions descending so latest is first let http: httpm.HttpClient = new httpm.HttpClient('setup-go'); let candidates: IGoVersion[] | null = (await http.getJson( dlUrl )).result; if (!candidates) { throw new Error(`golang download url did not return results: ${dlUrl}`); } let goFile: IGoVersionFile | undefined; for (let i = 0; i < candidates.length; i++) { let candidate: IGoVersion = candidates[i]; let version = candidate.version.replace('go', ''); // 1.13.0 is advertised as 1.13 preventing being able to match exactly 1.13.0 // since a semver of 1.13 would match latest 1.13 let parts: string[] = version.split('.'); if (parts.length == 2) { version = version + '.0'; } //console.log(version, versionSpec); if (semver.satisfies(version, versionSpec) && candidate.stable == stable) { goFile = candidate.files.find(file => { return file.arch === archFilter && file.os === platFilter; }); if (goFile) { match = candidate; break; } } } if (match && goFile) { match.files = [goFile]; } return match; }