logger.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import fs from 'fs-extra';
import { createLogger, format, transports } from 'winston';
import path from 'path';
import os from 'os';

// Define the log directory
const logDir = path.join(os.homedir(), '.smart-contracts-graphql-logs');
fs.ensureDirSync(logDir);

// Create the logger with Winston
const logger = createLogger({
  level: 'info',
  format: format.combine(
    format.timestamp(),
    format.printf(({ level, message, timestamp }) => {
      return `${timestamp} ${level}: ${message}`;
    })
  ),
  transports: [
    new transports.File({ filename: path.join(logDir, 'cli.log') }),
    new transports.Console({ format: format.simple() })
  ],
  exceptionHandlers: [
    new transports.File({ filename: path.join(logDir, 'exceptions.log') })
  ]
});

export default logger;