fix(node): sync transactional Codex hooks
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ZacharyZhang-NY committed
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@@ -0,0 +1,432 @@
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import { randomUUID } from 'node:crypto';
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import fsp from 'node:fs/promises';
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import type { FileHandle } from 'node:fs/promises';
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import os from 'node:os';
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import path from 'node:path';
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import { ensurePrivateDirectory, resolvePrivateChildDirectory } from '../runtime-paths.js';
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import type { InstallConfig } from './base.js';
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import { generateGuardScript, type GuardScriptOptions } from './guard-template.js';
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import { generateHookScript, type HookScriptOptions } from './hook-template.js';
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import {
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inspectPhysicalDirectory,
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readPhysicalFile,
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type FileSnapshot,
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} from './managed-files.js';
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import { parseStrictJsonObject } from './strict-json.js';
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const MAX_SECRET_BYTES = 64 * 1024;
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const MAX_CONFIG_BYTES = 512 * 1024;
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const MAX_SOURCE_BYTES = 2 * 1024 * 1024;
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interface FileChange {
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readonly filePath: string;
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readonly label: string;
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readonly next: string;
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readonly mode: number;
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readonly maximumBytes: number;
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readonly original?: FileSnapshot;
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}
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interface StagedChange {
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readonly change: FileChange;
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readonly temporaryPath: string;
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readonly rollbackPath?: string;
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committed: boolean;
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}
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export interface ManagedRuntimePaths {
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readonly runtimeRoot: string;
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readonly agentDirectory: string;
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readonly configPath: string;
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readonly keyPath: string;
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readonly guardPath: string;
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readonly auditPath: string;
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}
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export interface ManagedInstallationSpec {
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readonly agentKey: string;
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readonly displayName: string;
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readonly hooksDirectoryLabel: string;
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readonly hooksLabel: string;
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readonly hooksPath: string;
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readonly expectedHooksSource?: string;
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readonly hooksSource: string;
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readonly config: InstallConfig;
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readonly guardOptions?: GuardScriptOptions;
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readonly auditOptions?: HookScriptOptions;
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}
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export interface ManagedPreflightSpec {
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readonly agentKey: string;
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readonly hooksDirectoryLabel: string;
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readonly hooksPath: string;
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readonly config: InstallConfig;
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}
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export interface PreparedManagedInstallation {
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readonly displayName: string;
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readonly hooksDirectoryLabel: string;
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readonly paths: ManagedRuntimePaths;
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readonly changes: readonly FileChange[];
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}
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export type RenameFile = (source: string, destination: string) => Promise<void>;
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function asError(error: unknown): Error {
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return error instanceof Error ? error : new Error(String(error));
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}
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function errorMessage(error: unknown): string {
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return error instanceof Error ? error.message : String(error);
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}
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function hasCode(error: unknown, code: string): boolean {
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return typeof error === 'object' && error !== null && 'code' in error && error.code === code;
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}
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export function samePath(left: string, right: string): boolean {
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const normalizedLeft = path.resolve(left);
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const normalizedRight = path.resolve(right);
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return process.platform === 'win32'
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? normalizedLeft.toLowerCase() === normalizedRight.toLowerCase()
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: normalizedLeft === normalizedRight;
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}
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function validateInstallConfig(config: InstallConfig, agentKey: string): void {
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for (const [field, value] of [
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['agentName', config.agentName],
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['orgId', config.orgId],
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['agentId', config.agentId],
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['kid', config.kid],
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['privateKey', config.privateKey],
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['baseUrl', config.baseUrl],
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['guardScriptPath', config.guardScriptPath],
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['hookScriptPath', config.hookScriptPath],
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] as const) {
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if (typeof value !== 'string' || !value) throw new Error(`${field} is required`);
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}
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if (config.token !== undefined && (typeof config.token !== 'string' || !config.token)) {
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throw new Error('token must be a non-empty string when provided');
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}
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if (config.agentName !== agentKey) {
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throw new Error(`${agentKey} installation requires agentName ${agentKey}`);
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}
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const seed = Buffer.from(config.privateKey, 'base64url');
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if (seed.length !== 32 || seed.toString('base64url') !== config.privateKey) {
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throw new Error('privateKey must be a canonical 32-byte base64url value');
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}
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const baseUrl = new URL(config.baseUrl);
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if (!['http:', 'https:'].includes(baseUrl.protocol)) {
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throw new Error('baseUrl must use HTTP or HTTPS');
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}
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if (baseUrl.username || baseUrl.password || baseUrl.search || baseUrl.hash) {
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throw new Error('baseUrl must exclude credentials, query parameters, and fragments');
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}
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}
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export function managedRuntimePaths(
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config: InstallConfig,
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agentKey: string,
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guardScript: string,
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auditScript: string,
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): ManagedRuntimePaths {
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validateInstallConfig(config, agentKey);
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const runtimeRoot = path.join(os.homedir(), '.elydora');
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const agentDirectory = resolvePrivateChildDirectory(runtimeRoot, config.agentId);
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const guardPath = path.join(agentDirectory, guardScript);
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const auditPath = path.join(agentDirectory, auditScript);
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if (!samePath(config.guardScriptPath, guardPath)) {
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throw new Error(`Elydora guard runtime must use the managed agent directory: ${guardPath}`);
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}
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if (!samePath(config.hookScriptPath, auditPath)) {
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throw new Error(`Elydora audit runtime must use the managed agent directory: ${auditPath}`);
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}
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return {
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runtimeRoot,
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agentDirectory,
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configPath: path.join(agentDirectory, 'config.json'),
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keyPath: path.join(agentDirectory, 'private.key'),
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guardPath,
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auditPath,
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};
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}
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function sameAgentId(left: unknown, right: string): boolean {
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return typeof left === 'string' && (process.platform === 'win32'
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? left.toLowerCase() === right.toLowerCase()
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: left === right);
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}
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async function validateRuntimeIdentity(
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paths: ManagedRuntimePaths,
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agentKey: string,
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): Promise<void> {
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if (!await inspectPhysicalDirectory(paths.runtimeRoot, 'Elydora runtime directory')) return;
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if (!await inspectPhysicalDirectory(paths.agentDirectory, 'Elydora agent runtime directory')) return;
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const config = await readPhysicalFile(paths.configPath, 'Elydora runtime config', MAX_CONFIG_BYTES);
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const artifacts = await Promise.all([
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readPhysicalFile(paths.keyPath, 'Elydora private key', MAX_SECRET_BYTES),
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readPhysicalFile(paths.guardPath, 'Elydora guard runtime'),
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readPhysicalFile(paths.auditPath, 'Elydora audit runtime'),
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readPhysicalFile(path.join(paths.agentDirectory, 'chain-state.json'), 'Elydora chain state'),
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readPhysicalFile(path.join(paths.agentDirectory, 'status-cache.json'), 'Elydora status cache'),
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readPhysicalFile(path.join(paths.agentDirectory, 'error.log'), 'Elydora error log'),
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]);
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if (!config) {
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if (artifacts.some(Boolean)) {
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throw new Error(
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`Elydora runtime identity cannot be verified without config.json: ${paths.agentDirectory}`,
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);
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}
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return;
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}
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const label = `Elydora runtime config at ${paths.configPath}`;
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const value = parseStrictJsonObject(config.contents, label);
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if (value.agent_name !== agentKey
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|| !sameAgentId(value.agent_id, path.basename(paths.agentDirectory))) {
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throw new Error(
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`Elydora runtime config identity does not match ${agentKey} agent ${path.basename(paths.agentDirectory)}: ${paths.configPath}`,
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);
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}
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}
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export async function preflightManagedInstallation(
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spec: ManagedPreflightSpec,
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guardScript: string,
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auditScript: string,
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): Promise<ManagedRuntimePaths> {
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const paths = managedRuntimePaths(spec.config, spec.agentKey, guardScript, auditScript);
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await inspectPhysicalDirectory(path.dirname(spec.hooksPath), spec.hooksDirectoryLabel);
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await validateRuntimeIdentity(paths, spec.agentKey);
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return paths;
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}
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function runtimeConfig(config: InstallConfig, agentKey: string): string {
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const value = {
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org_id: config.orgId,
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agent_id: config.agentId,
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kid: config.kid,
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base_url: config.baseUrl,
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...(config.token ? { token: config.token } : {}),
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agent_name: agentKey,
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};
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const encoded = `${JSON.stringify(value, null, 2)}\n`;
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if (Buffer.byteLength(encoded) > MAX_CONFIG_BYTES) {
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throw new Error(`Elydora runtime config exceeds ${MAX_CONFIG_BYTES} bytes`);
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}
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return encoded;
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}
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async function prepareChange(
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filePath: string,
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label: string,
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next: string,
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mode: number,
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maximumBytes = MAX_SOURCE_BYTES,
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): Promise<FileChange> {
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return {
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filePath,
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label,
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next,
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mode,
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maximumBytes,
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original: await readPhysicalFile(filePath, label, maximumBytes),
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};
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}
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export async function prepareManagedInstallation(
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spec: ManagedInstallationSpec,
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guardScript: string,
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auditScript: string,
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): Promise<PreparedManagedInstallation> {
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const paths = await preflightManagedInstallation(spec, guardScript, auditScript);
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const changes = await Promise.all([
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prepareChange(
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paths.guardPath,
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'Elydora guard runtime',
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generateGuardScript(spec.agentKey, spec.config.agentId, spec.guardOptions),
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0o700,
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),
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prepareChange(
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paths.configPath,
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'Elydora runtime config',
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runtimeConfig(spec.config, spec.agentKey),
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0o600,
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MAX_CONFIG_BYTES,
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),
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prepareChange(
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paths.keyPath,
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'Elydora private key',
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spec.config.privateKey,
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0o600,
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MAX_SECRET_BYTES,
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),
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prepareChange(
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paths.auditPath,
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'Elydora audit runtime',
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generateHookScript(spec.agentKey, spec.config.agentId, spec.auditOptions),
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0o700,
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),
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prepareChange(spec.hooksPath, spec.hooksLabel, spec.hooksSource, 0o600),
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]);
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const hooksSource = changes.at(-1)!.original?.contents;
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if (hooksSource !== spec.expectedHooksSource) {
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throw new Error(`${spec.hooksLabel} changed before installation: ${spec.hooksPath}`);
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}
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await validateRuntimeIdentity(paths, spec.agentKey);
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return {
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displayName: spec.displayName,
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hooksDirectoryLabel: spec.hooksDirectoryLabel,
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paths,
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changes,
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};
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}
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async function unlinkOptional(filePath: string): Promise<void> {
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try {
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await fsp.unlink(filePath);
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} catch (error) {
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if (!hasCode(error, 'ENOENT')) throw error;
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}
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}
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async function assertUnchanged(change: FileChange, displayName: string): Promise<void> {
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const current = await readPhysicalFile(change.filePath, change.label, change.maximumBytes);
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if ((!current && change.original)
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|| (current && !change.original)
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|| (current && change.original && (
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current.contents !== change.original.contents
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|| current.device !== change.original.device
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|| current.inode !== change.original.inode
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))) {
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throw new Error(`${change.label} changed during ${displayName} installation: ${change.filePath}`);
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}
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}
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async function writeExclusive(
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filePath: string,
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contents: string,
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mode: number,
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label: string,
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): Promise<void> {
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let handle: FileHandle | undefined;
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try {
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handle = await fsp.open(filePath, 'wx', mode);
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await handle.writeFile(contents, 'utf-8');
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await handle.sync();
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await handle.close();
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handle = undefined;
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if (process.platform !== 'win32') await fsp.chmod(filePath, mode);
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} catch (error) {
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const failures = [asError(error)];
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if (handle) {
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try { await handle.close(); } catch (closeError) { failures.push(asError(closeError)); }
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}
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try { await unlinkOptional(filePath); } catch (cleanupError) {
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failures.push(asError(cleanupError));
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}
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if (failures.length > 1) throw new AggregateError(failures, `Stage ${label}`);
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throw new Error(`Stage ${label}: ${errorMessage(error)}`, { cause: failures[0] });
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}
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}
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async function stage(change: FileChange, displayName: string): Promise<StagedChange> {
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await assertUnchanged(change, displayName);
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const token = randomUUID();
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const directory = path.dirname(change.filePath);
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const temporaryPath = path.join(directory, `.${path.basename(change.filePath)}.${token}.tmp`);
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const rollbackPath = change.original
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? path.join(directory, `.${path.basename(change.filePath)}.${token}.rollback`)
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: undefined;
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try {
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await writeExclusive(temporaryPath, change.next, change.mode, change.label);
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if (rollbackPath && change.original) {
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await writeExclusive(
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rollbackPath,
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change.original.contents,
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change.original.mode,
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`${change.label} rollback`,
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);
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}
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return { change, temporaryPath, rollbackPath, committed: false };
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} catch (error) {
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const failures = [asError(error)];
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for (const item of [temporaryPath, rollbackPath]) {
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if (!item) continue;
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try { await unlinkOptional(item); } catch (cleanupError) {
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failures.push(asError(cleanupError));
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}
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}
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if (failures.length > 1) throw new AggregateError(failures, `Stage ${change.label}`);
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throw error;
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}
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}
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async function commit(
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staged: StagedChange,
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displayName: string,
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renameFile: RenameFile,
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): Promise<void> {
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await assertUnchanged(staged.change, displayName);
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await renameFile(staged.temporaryPath, staged.change.filePath);
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staged.committed = true;
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}
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async function rollback(staged: StagedChange, renameFile: RenameFile): Promise<void> {
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if (!staged.committed) return;
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if (!staged.change.original) {
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await unlinkOptional(staged.change.filePath);
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return;
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}
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if (!staged.rollbackPath) throw new Error(`Missing rollback data for ${staged.change.label}`);
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await renameFile(staged.rollbackPath, staged.change.filePath);
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}
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async function cleanup(staged: StagedChange): Promise<void> {
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await Promise.all(
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[staged.temporaryPath, staged.rollbackPath].filter(Boolean).map((item) => unlinkOptional(item!)),
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);
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}
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async function ensureManagedDirectory(directory: string, label: string): Promise<void> {
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await fsp.mkdir(directory, { recursive: true, mode: 0o700 });
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if (!await inspectPhysicalDirectory(directory, label)) {
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throw new Error(`${label} is missing: ${directory}`);
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}
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}
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export async function commitManagedInstallation(
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prepared: PreparedManagedInstallation,
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renameFile: RenameFile = fsp.rename,
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): Promise<void> {
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await ensurePrivateDirectory(prepared.paths.runtimeRoot);
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await ensurePrivateDirectory(prepared.paths.agentDirectory);
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await ensureManagedDirectory(
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path.dirname(prepared.changes.at(-1)!.filePath),
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prepared.hooksDirectoryLabel,
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);
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const staged: StagedChange[] = [];
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try {
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for (const change of prepared.changes) {
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staged.push(await stage(change, prepared.displayName));
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}
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for (const item of staged) await commit(item, prepared.displayName, renameFile);
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} catch (error) {
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const failures = [asError(error)];
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for (const item of [...staged].reverse()) {
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try { await rollback(item, renameFile); } catch (rollbackError) {
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failures.push(asError(rollbackError));
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}
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}
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for (const item of staged) {
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try { await cleanup(item); } catch (cleanupError) {
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failures.push(asError(cleanupError));
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}
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}
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throw new AggregateError(
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failures,
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`Install ${prepared.displayName} hooks: ${errorMessage(error)}`,
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);
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}
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const failures: Error[] = [];
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for (const item of staged) {
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try { await cleanup(item); } catch (error) { failures.push(asError(error)); }
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}
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if (failures.length > 0) {
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throw new AggregateError(
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failures,
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`Clean ${prepared.displayName} installation transaction files`,
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);
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}
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}
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