Carlos Florêncio
79 lines
2.8 KiB
TypeScript
79 lines
2.8 KiB
TypeScript
import path from "node:path";
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import fs from "node:fs";
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import { getBinaryName, getPlatformDir, type PlatformDir } from "./platform";
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const PLATFORM_TO_NPM_PACKAGE: Record<PlatformDir, string> = {
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"linux-x64": "@kdlbs/runtime-linux-x64",
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"linux-arm64": "@kdlbs/runtime-linux-arm64",
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"macos-x64": "@kdlbs/runtime-darwin-x64",
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"macos-arm64": "@kdlbs/runtime-darwin-arm64",
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"windows-x64": "@kdlbs/runtime-win32-x64",
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};
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export type RuntimeSource = "env" | "npm";
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export type ResolvedRuntime = {
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bundleDir: string;
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source: RuntimeSource;
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};
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/**
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* Resolve the runtime bundle directory using a two-step priority chain:
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*
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* 1. KANDEV_BUNDLE_DIR env var — set by the Homebrew formula wrapper and
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* useful for local testing. Skips all other resolution.
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* 2. Installed npm runtime package — looks for @kdlbs/runtime-{platform}
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* in node_modules via Node module resolution. Works after
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* `npx kandev@latest` or `npm install -g kandev` (requires npm 7+).
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*
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* The explicit `--runtime-version <tag>` download path is handled directly
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* in run.ts (which manages the GitHub download + cache itself); it does
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* not flow through this function.
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*
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* Throws with an actionable error message if no runtime is found.
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*/
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export function resolveRuntime(): ResolvedRuntime {
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const envBundleDir = process.env.KANDEV_BUNDLE_DIR;
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if (envBundleDir) {
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validateBundle(envBundleDir);
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return { bundleDir: envBundleDir, source: "env" };
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}
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const platformDir = getPlatformDir();
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const packageName = PLATFORM_TO_NPM_PACKAGE[platformDir];
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let pkgJsonPath: string | null = null;
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try {
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pkgJsonPath = require.resolve(`${packageName}/package.json`);
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} catch {
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// MODULE_NOT_FOUND — npm runtime package is not installed. Fall through
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// to the actionable error below.
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}
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if (pkgJsonPath) {
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// The package IS installed. If validateBundle throws here, the bundle is
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// present but corrupt — surface the error rather than the generic
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// "no runtime found" message below.
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const packageRoot = path.dirname(pkgJsonPath);
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validateBundle(packageRoot);
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return { bundleDir: packageRoot, source: "npm" };
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}
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throw new Error(
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`No Kandev runtime found for ${platformDir}.\n` +
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` Install via npm (requires npm 7+): npx kandev@latest\n` +
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` Install via Homebrew: brew install kdlbs/kandev/kandev\n` +
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` Download a specific version (debug): kandev --runtime-version <tag>`,
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);
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}
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export function validateBundle(bundleDir: string): void {
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const backendBin = path.join(bundleDir, "bin", getBinaryName("kandev"));
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if (!fs.existsSync(backendBin)) {
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throw new Error(`Backend binary not found in bundle at ${bundleDir}`);
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}
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const agentctlBin = path.join(bundleDir, "bin", getBinaryName("agentctl"));
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if (!fs.existsSync(agentctlBin)) {
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throw new Error(`agentctl binary not found in bundle at ${bundleDir}`);
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}
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}
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