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installer.ts
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installer.ts
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import os = require('os');
import * as assert from 'assert';
import * as core from '@actions/core';
import * as hc from '@actions/http-client';
import * as io from '@actions/io';
import * as tc from '@actions/tool-cache';
import * as path from 'path';
import * as semver from 'semver';
import fs = require('fs');
//
// Node versions interface
// see https://nodejs.org/dist/index.json
//
export interface INodeVersion {
version: string;
files: string[];
}
interface INodeVersionInfo {
downloadUrl: string;
resolvedVersion: string;
arch: string;
fileName: string;
}
interface INodeRelease extends tc.IToolRelease {
lts?: string;
}
export async function getNode(
versionSpec: string,
stable: boolean,
checkLatest: boolean,
auth: string | undefined,
arch: string = os.arch()
) {
// Store manifest data to avoid multiple calls
let manifest: INodeRelease[] | undefined;
let osPlat: string = os.platform();
let osArch: string = translateArchToDistUrl(arch);
if (isLtsAlias(versionSpec)) {
core.info('Attempt to resolve LTS alias from manifest...');
// No try-catch since it's not possible to resolve LTS alias without manifest
manifest = await getManifest(auth);
versionSpec = resolveLtsAliasFromManifest(versionSpec, stable, manifest);
}
if (checkLatest) {
core.info('Attempt to resolve the latest version from manifest...');
const resolvedVersion = await resolveVersionFromManifest(
versionSpec,
stable,
auth,
osArch,
manifest
);
if (resolvedVersion) {
versionSpec = resolvedVersion;
core.info(`Resolved as '${versionSpec}'`);
} else {
core.info(`Failed to resolve version ${versionSpec} from manifest`);
}
}
// check cache
let toolPath: string;
toolPath = tc.find('node', versionSpec, osArch);
// If not found in cache, download
if (toolPath) {
core.info(`Found in cache @ ${toolPath}`);
} else {
core.info(`Attempting to download ${versionSpec}...`);
let downloadPath = '';
let info: INodeVersionInfo | null = null;
//
// Try download from internal distribution (popular versions only)
//
try {
info = await getInfoFromManifest(
versionSpec,
stable,
auth,
osArch,
manifest
);
if (info) {
core.info(
`Acquiring ${info.resolvedVersion} - ${info.arch} from ${info.downloadUrl}`
);
downloadPath = await tc.downloadTool(info.downloadUrl, undefined, auth);
} else {
core.info(
'Not found in manifest. Falling back to download directly from Node'
);
}
} catch (err) {
// Rate limit?
if (
err instanceof tc.HTTPError &&
(err.httpStatusCode === 403 || err.httpStatusCode === 429)
) {
core.info(
`Received HTTP status code ${err.httpStatusCode}. This usually indicates the rate limit has been exceeded`
);
} else {
core.info(err.message);
}
core.debug(err.stack);
core.info('Falling back to download directly from Node');
}
//
// Download from nodejs.org
//
if (!downloadPath) {
info = await getInfoFromDist(versionSpec, arch);
if (!info) {
throw new Error(
`Unable to find Node version '${versionSpec}' for platform ${osPlat} and architecture ${osArch}.`
);
}
core.info(
`Acquiring ${info.resolvedVersion} - ${info.arch} from ${info.downloadUrl}`
);
try {
downloadPath = await tc.downloadTool(info.downloadUrl);
} catch (err) {
if (err instanceof tc.HTTPError && err.httpStatusCode == 404) {
return await acquireNodeFromFallbackLocation(
info.resolvedVersion,
info.arch
);
}
throw err;
}
}
//
// Extract
//
core.info('Extracting ...');
let extPath: string;
info = info || ({} as INodeVersionInfo); // satisfy compiler, never null when reaches here
if (osPlat == 'win32') {
let _7zPath = path.join(__dirname, '..', 'externals', '7zr.exe');
extPath = await tc.extract7z(downloadPath, undefined, _7zPath);
// 7z extracts to folder matching file name
let nestedPath = path.join(extPath, path.basename(info.fileName, '.7z'));
if (fs.existsSync(nestedPath)) {
extPath = nestedPath;
}
} else {
extPath = await tc.extractTar(downloadPath, undefined, [
'xz',
'--strip',
'1'
]);
}
//
// Install into the local tool cache - node extracts with a root folder that matches the fileName downloaded
//
core.info('Adding to the cache ...');
toolPath = await tc.cacheDir(
extPath,
'node',
info.resolvedVersion,
info.arch
);
core.info('Done');
}
//
// a tool installer initimately knows details about the layout of that tool
// for example, node binary is in the bin folder after the extract on Mac/Linux.
// layouts could change by version, by platform etc... but that's the tool installers job
//
if (osPlat != 'win32') {
toolPath = path.join(toolPath, 'bin');
}
//
// prepend the tools path. instructs the agent to prepend for future tasks
core.addPath(toolPath);
}
function isLtsAlias(versionSpec: string): boolean {
return versionSpec.startsWith('lts');
}
function getManifest(auth: string | undefined): Promise<tc.IToolRelease[]> {
core.debug('Getting manifest from actions/node-versions@main');
return tc.getManifestFromRepo('actions', 'node-versions', auth, 'main');
}
function resolveLtsAliasFromManifest(
versionSpec: string,
stable: boolean,
manifest: INodeRelease[]
): string {
const alias = versionSpec.split('lts/')[1]?.toLowerCase();
if (!alias) {
throw new Error(
`Unexpected LTS alias '${alias}' for Node version '${versionSpec}'`
);
}
core.debug(`LTS alias '${alias}' for Node version '${versionSpec}'`);
// Supported formats are `lts/<alias>` and `lts/*`. Where asterisk means highest possible LTS.
const release =
alias === '*'
? manifest.find(x => !!x.lts && x.stable === stable)
: manifest.find(
x => x.lts?.toLowerCase() === alias && x.stable === stable
);
if (!release) {
throw new Error(
`Unable to find LTS release '${alias}' for Node version '${versionSpec}'.`
);
}
core.debug(
`Found LTS release '${release.version}' for Node version '${versionSpec}'`
);
return release.version.split('.')[0];
}
async function getInfoFromManifest(
versionSpec: string,
stable: boolean,
auth: string | undefined,
osArch: string = translateArchToDistUrl(os.arch()),
manifest: tc.IToolRelease[] | undefined
): Promise<INodeVersionInfo | null> {
let info: INodeVersionInfo | null = null;
if (!manifest) {
core.debug('No manifest cached');
manifest = await getManifest(auth);
}
const rel = await tc.findFromManifest(versionSpec, stable, manifest, osArch);
if (rel && rel.files.length > 0) {
info = <INodeVersionInfo>{};
info.resolvedVersion = rel.version;
info.arch = rel.files[0].arch;
info.downloadUrl = rel.files[0].download_url;
info.fileName = rel.files[0].filename;
}
return info;
}
async function getInfoFromDist(
versionSpec: string,
arch: string = os.arch()
): Promise<INodeVersionInfo | null> {
let osPlat: string = os.platform();
let osArch: string = translateArchToDistUrl(arch);
let version: string;
version = await queryDistForMatch(versionSpec, arch);
if (!version) {
return null;
}
//
// Download - a tool installer intimately knows how to get the tool (and construct urls)
//
version = semver.clean(version) || '';
let fileName: string =
osPlat == 'win32'
? `node-v${version}-win-${osArch}`
: `node-v${version}-${osPlat}-${osArch}`;
let urlFileName: string =
osPlat == 'win32' ? `${fileName}.7z` : `${fileName}.tar.gz`;
let url = `https://nodejs.org/dist/v${version}/${urlFileName}`;
return <INodeVersionInfo>{
downloadUrl: url,
resolvedVersion: version,
arch: arch,
fileName: fileName
};
}
async function resolveVersionFromManifest(
versionSpec: string,
stable: boolean,
auth: string | undefined,
osArch: string = translateArchToDistUrl(os.arch()),
manifest: tc.IToolRelease[] | undefined
): Promise<string | undefined> {
try {
const info = await getInfoFromManifest(
versionSpec,
stable,
auth,
osArch,
manifest
);
return info?.resolvedVersion;
} catch (err) {
core.info('Unable to resolve version from manifest...');
core.debug(err.message);
}
}
// TODO - should we just export this from @actions/tool-cache? Lifted directly from there
function evaluateVersions(versions: string[], versionSpec: string): string {
let version = '';
core.debug(`evaluating ${versions.length} versions`);
versions = versions.sort((a, b) => {
if (semver.gt(a, b)) {
return 1;
}
return -1;
});
for (let i = versions.length - 1; i >= 0; i--) {
const potential: string = versions[i];
const satisfied: boolean = semver.satisfies(potential, versionSpec);
if (satisfied) {
version = potential;
break;
}
}
if (version) {
core.debug(`matched: ${version}`);
} else {
core.debug('match not found');
}
return version;
}
async function queryDistForMatch(
versionSpec: string,
arch: string = os.arch()
): Promise<string> {
let osPlat: string = os.platform();
let osArch: string = translateArchToDistUrl(arch);
// node offers a json list of versions
let dataFileName: string;
switch (osPlat) {
case 'linux':
dataFileName = `linux-${osArch}`;
break;
case 'darwin':
dataFileName = `osx-${osArch}-tar`;
break;
case 'win32':
dataFileName = `win-${osArch}-exe`;
break;
default:
throw new Error(`Unexpected OS '${osPlat}'`);
}
let versions: string[] = [];
let nodeVersions = await module.exports.getVersionsFromDist();
nodeVersions.forEach((nodeVersion: INodeVersion) => {
// ensure this version supports your os and platform
if (nodeVersion.files.indexOf(dataFileName) >= 0) {
versions.push(nodeVersion.version);
}
});
// get the latest version that matches the version spec
let version: string = evaluateVersions(versions, versionSpec);
return version;
}
export async function getVersionsFromDist(): Promise<INodeVersion[]> {
let dataUrl = 'https://nodejs.org/dist/index.json';
let httpClient = new hc.HttpClient('setup-node', [], {
allowRetries: true,
maxRetries: 3
});
let response = await httpClient.getJson<INodeVersion[]>(dataUrl);
return response.result || [];
}
// For non LTS versions of Node, the files we need (for Windows) are sometimes located
// in a different folder than they normally are for other versions.
// Normally the format is similar to: https://nodejs.org/dist/v5.10.1/node-v5.10.1-win-x64.7z
// In this case, there will be two files located at:
// /dist/v5.10.1/win-x64/node.exe
// /dist/v5.10.1/win-x64/node.lib
// If this is not the structure, there may also be two files located at:
// /dist/v0.12.18/node.exe
// /dist/v0.12.18/node.lib
// This method attempts to download and cache the resources from these alternative locations.
// Note also that the files are normally zipped but in this case they are just an exe
// and lib file in a folder, not zipped.
async function acquireNodeFromFallbackLocation(
version: string,
arch: string = os.arch()
): Promise<string> {
let osPlat: string = os.platform();
let osArch: string = translateArchToDistUrl(arch);
// Create temporary folder to download in to
const tempDownloadFolder: string =
'temp_' + Math.floor(Math.random() * 2000000000);
const tempDirectory = process.env['RUNNER_TEMP'] || '';
assert.ok(tempDirectory, 'Expected RUNNER_TEMP to be defined');
const tempDir: string = path.join(tempDirectory, tempDownloadFolder);
await io.mkdirP(tempDir);
let exeUrl: string;
let libUrl: string;
try {
exeUrl = `https://nodejs.org/dist/v${version}/win-${osArch}/node.exe`;
libUrl = `https://nodejs.org/dist/v${version}/win-${osArch}/node.lib`;
core.info(`Downloading only node binary from ${exeUrl}`);
const exePath = await tc.downloadTool(exeUrl);
await io.cp(exePath, path.join(tempDir, 'node.exe'));
const libPath = await tc.downloadTool(libUrl);
await io.cp(libPath, path.join(tempDir, 'node.lib'));
} catch (err) {
if (err instanceof tc.HTTPError && err.httpStatusCode == 404) {
exeUrl = `https://nodejs.org/dist/v${version}/node.exe`;
libUrl = `https://nodejs.org/dist/v${version}/node.lib`;
const exePath = await tc.downloadTool(exeUrl);
await io.cp(exePath, path.join(tempDir, 'node.exe'));
const libPath = await tc.downloadTool(libUrl);
await io.cp(libPath, path.join(tempDir, 'node.lib'));
} else {
throw err;
}
}
let toolPath = await tc.cacheDir(tempDir, 'node', version, arch);
core.addPath(toolPath);
return toolPath;
}
// os.arch does not always match the relative download url, e.g.
// os.arch == 'arm' != node-v12.13.1-linux-armv7l.tar.gz
// All other currently supported architectures match, e.g.:
// os.arch = arm64 => https://nodejs.org/dist/v{VERSION}/node-v{VERSION}-{OS}-arm64.tar.gz
// os.arch = x64 => https://nodejs.org/dist/v{VERSION}/node-v{VERSION}-{OS}-x64.tar.gz
function translateArchToDistUrl(arch: string): string {
switch (arch) {
case 'arm':
return 'armv7l';
default:
return arch;
}
}