Files
nanoclaw/src/container-config.ts
gavrielc 20a24dfd13 style: apply prettier formatting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-15 21:15:13 +03:00

115 lines
3.6 KiB
TypeScript

/**
* Per-group container config, stored as a plain JSON file at
* `groups/<folder>/container.json`. Replaces the former
* `agent_groups.container_config` DB column.
*
* Shape:
* {
* mcpServers: { [name]: { command, args, env } }
* packages: { apt: string[], npm: string[] }
* imageTag?: string // set by buildAgentGroupImage on rebuild
* additionalMounts?: Array<{hostPath, containerPath, readonly}>
* }
*
* All fields are optional — a missing file or a partial file both resolve
* to sensible defaults. Writes are atomic-enough (write-then-rename is not
* worth the ceremony here since there's only one writer in practice: the
* host, from the delivery thread that processes approved system actions).
*/
import fs from 'fs';
import path from 'path';
import { GROUPS_DIR } from './config.js';
export interface McpServerConfig {
command: string;
args?: string[];
env?: Record<string, string>;
}
export interface AdditionalMountConfig {
hostPath: string;
containerPath: string;
readonly?: boolean;
}
export interface ContainerConfig {
mcpServers: Record<string, McpServerConfig>;
packages: { apt: string[]; npm: string[] };
imageTag?: string;
additionalMounts: AdditionalMountConfig[];
}
function emptyConfig(): ContainerConfig {
return {
mcpServers: {},
packages: { apt: [], npm: [] },
additionalMounts: [],
};
}
function configPath(folder: string): string {
return path.join(GROUPS_DIR, folder, 'container.json');
}
/**
* Read the container config for a group, returning sensible defaults for
* any missing fields (or an entirely empty config if the file is absent).
* Never throws for missing / malformed files — corruption logs a warning
* via console.error and falls back to empty.
*/
export function readContainerConfig(folder: string): ContainerConfig {
const p = configPath(folder);
if (!fs.existsSync(p)) return emptyConfig();
try {
const raw = JSON.parse(fs.readFileSync(p, 'utf8')) as Partial<ContainerConfig>;
return {
mcpServers: raw.mcpServers ?? {},
packages: {
apt: raw.packages?.apt ?? [],
npm: raw.packages?.npm ?? [],
},
imageTag: raw.imageTag,
additionalMounts: raw.additionalMounts ?? [],
};
} catch (err) {
console.error(`[container-config] failed to parse ${p}: ${String(err)}`);
return emptyConfig();
}
}
/**
* Write the container config for a group, creating the groups/<folder>/
* directory if necessary. Pretty-printed JSON so diffs in the activation
* flow are reviewable.
*/
export function writeContainerConfig(folder: string, config: ContainerConfig): void {
const p = configPath(folder);
const dir = path.dirname(p);
if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
fs.writeFileSync(p, JSON.stringify(config, null, 2) + '\n');
}
/**
* Apply a mutator function to a group's container config and persist the
* result. Convenient for append-style changes like `install_packages` and
* `add_mcp_server` handlers.
*/
export function updateContainerConfig(folder: string, mutate: (config: ContainerConfig) => void): ContainerConfig {
const config = readContainerConfig(folder);
mutate(config);
writeContainerConfig(folder, config);
return config;
}
/**
* Initialize an empty container.json for a group if one doesn't already
* exist. Idempotent — used from `group-init.ts`.
*/
export function initContainerConfig(folder: string): boolean {
const p = configPath(folder);
if (fs.existsSync(p)) return false;
writeContainerConfig(folder, emptyConfig());
return true;
}