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* SDK & Toolchain Scanner
*
* Detects installed SDKs, compilers, and developer toolchains on the host
* machine. Results feed into capability tags so the server can match jobs
* to agents that have the right tools.
*
* Design notes:
* - Every detection is wrapped in try/catch so a missing tool never crashes
* the scanner.
* - Commands have a 5-second timeout to avoid blocking on hung processes.
* - Works on macOS, Linux, and Windows (adjusts commands per platform).
*
* Requirements: MVP.4.1.2 (enhanced)
*/
import { execSync } from 'child_process';
import os from 'os';
import { createLogger } from './logger.js';
const logger = createLogger('sdkScanner');
/** Timeout for each detection command in milliseconds. */
const CMD_TIMEOUT_MS = 5_000;
// ---------------------------------------------------------------------------
// Public types
// ---------------------------------------------------------------------------
/** Basic information about an installed SDK / tool. */
export interface SDKInfo {
name: string;
version: string;
path?: string;
metadata?: Record<string, string>;
}
/** Aggregated result of scanning all known SDKs on the host. */
export interface SDKScanResult {
// Development toolchains
java?: SDKInfo & { javaHome: string };
kotlin?: SDKInfo;
gradle?: SDKInfo;
maven?: SDKInfo;
// Mobile
xcode?: SDKInfo & { xcodeSelectPath: string; sdks: string[] };
androidSdk?: SDKInfo & { androidHome: string; apiLevels: number[]; buildToolsVersions: string[] };
flutter?: SDKInfo & { dartVersion: string };
cocoapods?: SDKInfo;
// Web / Backend
node?: SDKInfo & { npmVersion?: string };
yarn?: SDKInfo;
pnpm?: SDKInfo;
python?: SDKInfo & { pipVersion?: string };
go?: SDKInfo & { gopath?: string };
rust?: SDKInfo & { cargoVersion?: string };
ruby?: SDKInfo & { bundlerVersion?: string };
dotnet?: SDKInfo;
// DevOps
docker?: SDKInfo & { composeVersion?: string };
terraform?: SDKInfo;
kubectl?: SDKInfo;
// General
git?: SDKInfo;
cmake?: SDKInfo;
make?: SDKInfo;
}
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
/**
* Run a shell command synchronously, returning trimmed stdout or `null` on
* failure. Stderr is included in the output because some tools (notably
* `java -version`) print to stderr.
*/
export function runCmd(cmd: string, timeoutMs: number = CMD_TIMEOUT_MS): string | null {
try {
const isWindows = os.platform() === 'win32';
const result = execSync(cmd, {
timeout: timeoutMs,
stdio: ['pipe', 'pipe', 'pipe'],
encoding: 'utf-8',
shell: isWindows ? 'cmd.exe' : '/bin/sh',
env: { ...process.env },
});
return result?.trim() ?? null;
} catch (err: unknown) {
// Some commands write version info to stderr. If the process exited
// with code 0 but threw because of the stderr capture, try stderr.
if (err && typeof err === 'object' && 'stderr' in err) {
const stderr = (err as { stderr?: string }).stderr;
if (stderr && typeof stderr === 'string' && stderr.trim().length > 0) {
return stderr.trim();
}
}
return null;
}
}
/**
* Extract major version number from a semver-ish string.
* e.g. "17.0.9" -> 17, "1.8.0_392" -> 8 (Java-specific handled externally).
*/
export function majorVersion(version: string): number {
const match = version.match(/^(\d+)/);
return match ? parseInt(match[1], 10) : 0;
}
/**
* Extract major.minor from a version string.
* e.g. "15.4.1" -> "15.4"
*/
export function majorMinor(version: string): string {
const match = version.match(/^(\d+\.\d+)/);
return match ? match[1] : version;
}
// ---------------------------------------------------------------------------
// Individual SDK detectors
// ---------------------------------------------------------------------------
function detectJava(): SDKScanResult['java'] {
// `java -version` prints to stderr
const raw = runCmd('java -version 2>&1');
if (!raw) return undefined;
// Matches: openjdk version "17.0.9" or java version "1.8.0_392"
const versionMatch = raw.match(/(?:openjdk|java) version "([^"]+)"/i);
if (!versionMatch) return undefined;
let version = versionMatch[1];
// Normalise legacy Java 1.x naming: "1.8.0_392" -> "8.0.392"
const legacyMatch = version.match(/^1\.(\d+)\.0(?:_(\d+))?/);
if (legacyMatch) {
version = legacyMatch[2] ? `${legacyMatch[1]}.0.${legacyMatch[2]}` : `${legacyMatch[1]}.0`;
}
const javaHome = process.env.JAVA_HOME ?? runCmd('echo $JAVA_HOME') ?? '';
return { name: 'java', version, javaHome };
}
function detectKotlin(): SDKScanResult['kotlin'] {
const raw = runCmd('kotlin -version 2>&1');
if (!raw) return undefined;
// "Kotlin version 2.0.0-release-341 (JRE ...)" or "Kotlin version 1.9.22 ..."
const match = raw.match(/Kotlin version ([\d.]+)/i);
if (!match) return undefined;
return { name: 'kotlin', version: match[1] };
}
function detectGradle(): SDKScanResult['gradle'] {
const raw = runCmd('gradle --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/Gradle ([\d.]+)/);
if (!match) return undefined;
return { name: 'gradle', version: match[1] };
}
function detectMaven(): SDKScanResult['maven'] {
const raw = runCmd('mvn --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/Apache Maven ([\d.]+)/);
if (!match) return undefined;
return { name: 'maven', version: match[1] };
}
function detectXcode(): SDKScanResult['xcode'] {
if (os.platform() !== 'darwin') return undefined;
const raw = runCmd('xcodebuild -version 2>&1');
if (!raw) return undefined;
const versionMatch = raw.match(/Xcode ([\d.]+)/);
if (!versionMatch) return undefined;
const xcodeSelectPath = runCmd('xcode-select -p 2>&1') ?? '';
// Gather available SDKs
const sdksRaw = runCmd('xcodebuild -showsdks 2>&1');
const sdks: string[] = [];
if (sdksRaw) {
const sdkMatches = sdksRaw.matchAll(/-sdk\s+(\S+)/g);
for (const m of sdkMatches) {
sdks.push(m[1]);
}
}
return { name: 'xcode', version: versionMatch[1], xcodeSelectPath, sdks };
}
function detectAndroidSdk(): SDKScanResult['androidSdk'] {
const androidHome = process.env.ANDROID_HOME ?? process.env.ANDROID_SDK_ROOT ?? '';
if (!androidHome) return undefined;
// Try to get installed API levels and build-tools versions
const apiLevels: number[] = [];
const buildToolsVersions: string[] = [];
const listRaw = runCmd(`"${androidHome}/cmdline-tools/latest/bin/sdkmanager" --list 2>&1`)
?? runCmd(`"${androidHome}/tools/bin/sdkmanager" --list 2>&1`);
if (listRaw) {
// Match "platforms;android-34"
const platformMatches = listRaw.matchAll(/platforms;android-(\d+)/g);
for (const m of platformMatches) {
const level = parseInt(m[1], 10);
if (!apiLevels.includes(level)) apiLevels.push(level);
}
// Match "build-tools;34.0.0"
const btMatches = listRaw.matchAll(/build-tools;([\d.]+)/g);
for (const m of btMatches) {
if (!buildToolsVersions.includes(m[1])) buildToolsVersions.push(m[1]);
}
}
apiLevels.sort((a, b) => b - a);
buildToolsVersions.sort().reverse();
const version = apiLevels.length > 0 ? String(apiLevels[0]) : 'unknown';
return { name: 'android-sdk', version, androidHome, apiLevels, buildToolsVersions };
}
function detectFlutter(): SDKScanResult['flutter'] {
const raw = runCmd('flutter --version 2>&1');
if (!raw) return undefined;
const versionMatch = raw.match(/Flutter ([\d.]+)/);
if (!versionMatch) return undefined;
const dartMatch = raw.match(/Dart ([\d.]+)/);
const dartVersion = dartMatch ? dartMatch[1] : 'unknown';
return { name: 'flutter', version: versionMatch[1], dartVersion };
}
function detectCocoapods(): SDKScanResult['cocoapods'] {
const raw = runCmd('pod --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/([\d.]+)/);
if (!match) return undefined;
return { name: 'cocoapods', version: match[1] };
}
function detectNode(): SDKScanResult['node'] {
const raw = runCmd('node --version 2>&1');
if (!raw) return undefined;
// "v20.11.0" -> "20.11.0"
const match = raw.match(/v?([\d.]+)/);
if (!match) return undefined;
const npmRaw = runCmd('npm --version 2>&1');
const npmMatch = npmRaw?.match(/([\d.]+)/);
return { name: 'node', version: match[1], npmVersion: npmMatch?.[1] };
}
function detectYarn(): SDKScanResult['yarn'] {
const raw = runCmd('yarn --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/([\d.]+)/);
if (!match) return undefined;
return { name: 'yarn', version: match[1] };
}
function detectPnpm(): SDKScanResult['pnpm'] {
const raw = runCmd('pnpm --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/([\d.]+)/);
if (!match) return undefined;
return { name: 'pnpm', version: match[1] };
}
function detectPython(): SDKScanResult['python'] {
const raw = runCmd('python3 --version 2>&1') ?? runCmd('python --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/Python ([\d.]+)/i);
if (!match) return undefined;
const pipRaw = runCmd('pip3 --version 2>&1') ?? runCmd('pip --version 2>&1');
const pipMatch = pipRaw?.match(/pip ([\d.]+)/);
return { name: 'python', version: match[1], pipVersion: pipMatch?.[1] };
}
function detectGo(): SDKScanResult['go'] {
const raw = runCmd('go version 2>&1');
if (!raw) return undefined;
// "go version go1.22.0 darwin/arm64"
const match = raw.match(/go([\d.]+)/);
if (!match) return undefined;
const gopath = process.env.GOPATH ?? runCmd('go env GOPATH 2>&1') ?? undefined;
return { name: 'go', version: match[1], gopath };
}
function detectRust(): SDKScanResult['rust'] {
const raw = runCmd('rustc --version 2>&1');
if (!raw) return undefined;
// "rustc 1.75.0 (82e1608df 2023-12-21)"
const match = raw.match(/rustc ([\d.]+)/);
if (!match) return undefined;
const cargoRaw = runCmd('cargo --version 2>&1');
const cargoMatch = cargoRaw?.match(/cargo ([\d.]+)/);
return { name: 'rust', version: match[1], cargoVersion: cargoMatch?.[1] };
}
function detectRuby(): SDKScanResult['ruby'] {
const raw = runCmd('ruby --version 2>&1');
if (!raw) return undefined;
// "ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22]"
const match = raw.match(/ruby ([\d.]+)/);
if (!match) return undefined;
const bundlerRaw = runCmd('bundler --version 2>&1');
const bundlerMatch = bundlerRaw?.match(/Bundler version ([\d.]+)/);
return { name: 'ruby', version: match[1], bundlerVersion: bundlerMatch?.[1] };
}
function detectDotnet(): SDKScanResult['dotnet'] {
const raw = runCmd('dotnet --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/([\d.]+)/);
if (!match) return undefined;
return { name: 'dotnet', version: match[1] };
}
function detectDocker(): SDKScanResult['docker'] {
const raw = runCmd('docker --version 2>&1');
if (!raw) return undefined;
// "Docker version 24.0.7, build afdd53b"
const match = raw.match(/Docker version ([\d.]+)/i);
if (!match) return undefined;
const composeRaw = runCmd('docker compose version 2>&1');
const composeMatch = composeRaw?.match(/v?([\d.]+)/);
return { name: 'docker', version: match[1], composeVersion: composeMatch?.[1] };
}
function detectTerraform(): SDKScanResult['terraform'] {
const raw = runCmd('terraform --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/Terraform v?([\d.]+)/i);
if (!match) return undefined;
return { name: 'terraform', version: match[1] };
}
function detectKubectl(): SDKScanResult['kubectl'] {
const raw = runCmd('kubectl version --client --short 2>&1')
?? runCmd('kubectl version --client 2>&1');
if (!raw) return undefined;
const match = raw.match(/v?([\d.]+)/);
if (!match) return undefined;
return { name: 'kubectl', version: match[1] };
}
function detectGit(): SDKScanResult['git'] {
const raw = runCmd('git --version 2>&1');
if (!raw) return undefined;
// "git version 2.43.0"
const match = raw.match(/git version ([\d.]+)/);
if (!match) return undefined;
return { name: 'git', version: match[1] };
}
function detectCmake(): SDKScanResult['cmake'] {
const raw = runCmd('cmake --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/cmake version ([\d.]+)/i);
if (!match) return undefined;
return { name: 'cmake', version: match[1] };
}
function detectMake(): SDKScanResult['make'] {
const raw = runCmd('make --version 2>&1');
if (!raw) return undefined;
const match = raw.match(/(?:GNU Make|Make) ([\d.]+)/i);
if (!match) return undefined;
return { name: 'make', version: match[1] };
}
// ---------------------------------------------------------------------------
// Public API
// ---------------------------------------------------------------------------
/**
* Scan the host for all known SDKs and toolchains.
*
* Each detector is independent and wrapped in try/catch so a failure in one
* tool never blocks detection of the others.
*/
export async function scanInstalledSDKs(): Promise<SDKScanResult> {
logger.info('Scanning installed SDKs and toolchains...');
const result: SDKScanResult = {};
// Run detectors sequentially to avoid spawning too many child processes at
// once on resource-constrained machines. Each has its own timeout guard.
const detectors: Array<[keyof SDKScanResult, () => SDKScanResult[keyof SDKScanResult]]> = [
['java', detectJava],
['kotlin', detectKotlin],
['gradle', detectGradle],
['maven', detectMaven],
['xcode', detectXcode],
['androidSdk', detectAndroidSdk],
['flutter', detectFlutter],
['cocoapods', detectCocoapods],
['node', detectNode],
['yarn', detectYarn],
['pnpm', detectPnpm],
['python', detectPython],
['go', detectGo],
['rust', detectRust],
['ruby', detectRuby],
['dotnet', detectDotnet],
['docker', detectDocker],
['terraform', detectTerraform],
['kubectl', detectKubectl],
['git', detectGit],
['cmake', detectCmake],
['make', detectMake],
];
for (const [key, detector] of detectors) {
try {
const info = detector();
if (info) {
(result as Record<string, unknown>)[key] = info;
}
} catch (err) {
logger.warn(`SDK detector for '${key}' threw unexpectedly:`, err);
}
}
const detected = Object.keys(result);
logger.info(`Detected ${detected.length} SDK(s): ${detected.join(', ')}`);
return result;
}
/**
* Generate capability tags from an SDK scan result.
*
* Tag conventions:
* - Generic tag without version: `java`, `docker`, `xcode`
* - Major-version tag: `java-17`, `node-20`, `go-1`
* - For Xcode, major.minor: `xcode-15.4`
* - For Android SDK, highest API level: `android-sdk-34`
* - Special: `docker` (Docker available), `dind` (Docker-in-Docker capable)
*/
export function generateTagsFromSDKs(sdks: SDKScanResult): string[] {
const tags: string[] = [];
const addVersionedTag = (info: SDKInfo | undefined, tagName?: string): void => {
if (!info) return;
const name = tagName ?? info.name;
tags.push(name);
const major = majorVersion(info.version);
if (major > 0) {
tags.push(`${name}-${major}`);
}
};
// Development toolchains
addVersionedTag(sdks.java);
addVersionedTag(sdks.kotlin);
addVersionedTag(sdks.gradle);
addVersionedTag(sdks.maven);
// Mobile - Xcode uses major.minor
if (sdks.xcode) {
tags.push('xcode');
tags.push(`xcode-${majorMinor(sdks.xcode.version)}`);
}
// Android SDK - tag with highest API level
if (sdks.androidSdk) {
tags.push('android-sdk');
if (sdks.androidSdk.apiLevels.length > 0) {
tags.push(`android-sdk-${sdks.androidSdk.apiLevels[0]}`);
}
}
addVersionedTag(sdks.flutter);
addVersionedTag(sdks.cocoapods);
// Web / Backend
addVersionedTag(sdks.node);
addVersionedTag(sdks.yarn);
addVersionedTag(sdks.pnpm);
addVersionedTag(sdks.python);
addVersionedTag(sdks.go);
addVersionedTag(sdks.rust);
addVersionedTag(sdks.ruby);
addVersionedTag(sdks.dotnet);
// DevOps
if (sdks.docker) {
tags.push('docker');
// Check if Docker-in-Docker is plausible (Docker socket exists)
try {
const socketCheck = runCmd('ls /var/run/docker.sock 2>&1');
if (socketCheck && !socketCheck.includes('No such file')) {
tags.push('dind');
}
} catch {
// ignore
}
}
addVersionedTag(sdks.terraform);
addVersionedTag(sdks.kubectl);
// General
addVersionedTag(sdks.git);
addVersionedTag(sdks.cmake);
addVersionedTag(sdks.make);
// De-duplicate (preserving order)
return [...new Set(tags)];
}
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