Rhombus MCP Server

import fs from "node:fs"; import path from "node:path"; import log4js from "log4js"; const baseDir = process.env.LOG_FOLDER ?? process.cwd(); const logDir = path.resolve(baseDir, "logs"); // Attempt to create log directory, but don't fail if we can't let fileLoggingEnabled = false; try { fs.mkdirSync(logDir, { recursive: true }); fileLoggingEnabled = true; } catch (error) { // Log to stderr since we can't write to file console.error(`Warning: Failed to create log directory at ${logDir}: ${error}`); } // Build appenders configuration dynamically const appenders: log4js.Configuration["appenders"] = { // stderr for terminal visibility (always available) stderr: { type: "stderr" }, // only send warn+ to stderr (never stdout) stderrInfo: { type: "logLevelFilter", appender: "stderr", level: "info", }, }; // Only add file appender if we successfully created the directory if (fileLoggingEnabled) { appenders.mcpFile = { type: "file", filename: path.join(logDir, "rhombus-node-mcp.log"), // prefer a number (bytes); 1 MiB: maxLogSize: 1 * 1024 * 1024, backups: 3, compress: true, layout: { type: "basic" }, }; } const stderrAppender = process.env.DEBUG === "true" ? "stderr" : "stderrInfo"; // Configure categories based on available appenders const categories = { default: { appenders: fileLoggingEnabled ? ["mcpFile", stderrAppender] : [stderrAppender], level: "trace", }, mcp: { appenders: fileLoggingEnabled ? ["mcpFile", stderrAppender] : [stderrAppender], level: "trace", }, }; log4js.configure({ appenders, categories, }); export const getLogger = log4js.getLogger; export const logger = log4js.getLogger("mcp");