MCPX MCP Gateway

import { env } from "./env.js"; import { FailedToConnectToTargetServer } from "./errors.js"; import { StdioTargetServer } from "./model/target-servers.js"; import { DockerService } from "./services/docker.js"; // The returned error should be a FailedToConnectToTargetServer. export async function prepareCommand( targetServer: StdioTargetServer, dockerService: DockerService, ): Promise<{ command: string; args: string[]; }> { const command = targetServer.command; const args = targetServer.args || []; if (args.length === 0) { return Promise.reject( new FailedToConnectToTargetServer("No arguments specified."), ); } switch (command) { case "npx": return { command, args }; case "docker": { if (!env.DIND_ENABLED) { return Promise.reject( new FailedToConnectToTargetServer( "Docker in Docker is not enabled. Cannot start docker mcp server. Please try to run MCPX server with '--privileged' access and try again.", ), ); } if (!env.INTERCEPTION_ENABLED) { return { command, args }; } try { const modifiedArgs = await dockerService.createImageWithCa(args); return { command, args: modifiedArgs, }; } catch (_) { return { command, args }; } } default: return { command, args }; } }