rhombus-node-mcp/dist/logger.js

MCP server for Rhombus API

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 = {
    // stderr for terminal visibility (always available)
    stderr: { type: "stderr" },
    // production stderr: hide trace/debug (e.g. full response snippets); still shows info+ like [POSTAPI] REQUEST
    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 isProduction = process.env.NODE_ENV === "production";
const stderrAppender = isProduction ? "stderrInfo" : "stderr";
// 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");