stripe-test-mcp/build/logger.js

Simply MCP server for testing for your stripe integrations

/**
 * MCP Logger - Simple logging utility for MCP (Microservices Communication Protocol)
 */
import * as fs from 'fs';
import * as path from 'path';
// ログレベルの定義
export var LogLevel;
(function (LogLevel) {
    LogLevel[LogLevel["DEBUG"] = 0] = "DEBUG";
    LogLevel[LogLevel["INFO"] = 1] = "INFO";
    LogLevel[LogLevel["WARN"] = 2] = "WARN";
    LogLevel[LogLevel["ERROR"] = 3] = "ERROR";
    LogLevel[LogLevel["NONE"] = 4] = "NONE";
})(LogLevel || (LogLevel = {}));
export class MCPLogger {
    level;
    logFile = null;
    prefix;
    includeTimestamp;
    constructor(options = {}) {
        this.level = options.level ?? LogLevel.INFO;
        this.prefix = options.prefix ?? 'MCP';
        this.includeTimestamp = options.includeTimestamp ?? true;
        // ログファイルの設定
        if (options.logFile) {
            const logDir = path.dirname(options.logFile);
            if (!fs.existsSync(logDir)) {
                fs.mkdirSync(logDir, { recursive: true });
            }
            this.logFile = fs.createWriteStream(options.logFile, { flags: 'a' });
        }
    }
    /**
     * ログメッセージを出力
     * MCPモデルを尊重: stdoutはJSON-RPCレスポンス専用、stderrをログに使用
     */
    log(level, message) {
        if (level < this.level) {
            return;
        }
        const timestamp = this.includeTimestamp ? `[${new Date().toISOString()}] ` : '';
        const levelStr = LogLevel[level].padEnd(5);
        const formattedMessage = `${timestamp}[${this.prefix}] [${levelStr}] ${message}`;
        // console.errorを使用してstderrに出力
        console.error(formattedMessage);
        // ファイルにもロギング（設定されている場合）
        if (this.logFile) {
            this.logFile.write(`${formattedMessage}\n`);
        }
    }
    // 各ログレベルのメソッド
    debug(message) {
        this.log(LogLevel.DEBUG, message);
    }
    info(message) {
        this.log(LogLevel.INFO, message);
    }
    warn(message) {
        this.log(LogLevel.WARN, message);
    }
    error(message) {
        this.log(LogLevel.ERROR, message);
    }
    // ロガーのクローズ
    close() {
        if (this.logFile) {
            this.logFile.end();
            this.logFile = null;
        }
    }
}
export const logger = new MCPLogger({
    level: LogLevel.INFO,
});