sap-btp-cloud-logging-client/lib/WinstonTransport.js

SAP BTP Cloud Logging client for Node.js applications

//@ts-ignore
const Transport = require('winston').Transport;

/**
 * @typedef {import('./CloudLoggingService')} CloudLoggingService
 */

class BTPCloudLoggingTransport extends Transport {
  /**
     * @param {{ cloudLogger: CloudLoggingService } & import('winston').transport.TransportStreamOptions} options
     */
  constructor(options) {
    super(options);
    this.name = 'btp-cloud-logging';
    this.cloudLogger = options.cloudLogger;
  }

  /**
     * @param {any} info
     * @param {() => void} callback
     */
  log(info, callback) {
    setImmediate(() => {
      // LEO-FIX: Ignore this line. The 'emit' method is inherited but not found by TSC.
      // @ts-ignore
      this.emit('logged', info);
    });

    this.cloudLogger.log(info.level, info.message, {
    }).catch((error) => {
      // LEO-FIX: Ignore this line. The 'emit' method is inherited but not found by TSC.
      // @ts-ignore
      this.emit('error', error);
    });

    callback();
  }
}

module.exports = BTPCloudLoggingTransport;