Function defaultLogTransform

src/mongo_logger.ts:677–877

(
  logObject: LoggableEvent | Record<string, any>,
  maxDocumentLength: number = DEFAULT_MAX_DOCUMENT_LENGTH
)

/** @internal */
export function defaultLogTransform(
  logObject: LoggableEvent | Record<string, any>,
  maxDocumentLength: number = DEFAULT_MAX_DOCUMENT_LENGTH
): Omit<Log, 's' | 't' | 'c'> {
  let log: Omit<Log, 's' | 't' | 'c'> = Object.create(null);

  switch (logObject.name) {
    case SERVER_SELECTION_STARTED:
      log = attachServerSelectionFields(log, logObject, maxDocumentLength);
      return log;
    case SERVER_SELECTION_FAILED:
      log = attachServerSelectionFields(log, logObject, maxDocumentLength);
      log.failure = logObject.failure?.message;
      return log;
    case SERVER_SELECTION_SUCCEEDED:
      log = attachServerSelectionFields(log, logObject, maxDocumentLength);
      log.serverHost = logObject.serverHost;
      log.serverPort = logObject.serverPort;
      return log;
    case WAITING_FOR_SUITABLE_SERVER:
      log = attachServerSelectionFields(log, logObject, maxDocumentLength);
      log.remainingTimeMS = logObject.remainingTimeMS;
      return log;
    case COMMAND_STARTED:
      log = attachCommandFields(log, logObject);
      log.message = 'Command started';
      log.command = stringifyWithMaxLen(logObject.command, maxDocumentLength, { relaxed: true });
      log.databaseName = logObject.databaseName;
      return log;
    case COMMAND_SUCCEEDED:
      log = attachCommandFields(log, logObject);
      log.message = 'Command succeeded';
      log.durationMS = logObject.duration;
      log.reply = stringifyWithMaxLen(logObject.reply, maxDocumentLength, { relaxed: true });
      return log;
    case COMMAND_FAILED:
      log = attachCommandFields(log, logObject);
      log.message = 'Command failed';
      log.durationMS = logObject.duration;
      log.failure = logObject.failure?.message ?? '(redacted)';
      return log;
    case CONNECTION_POOL_CREATED:
      log = attachConnectionFields(log, logObject);
      log.message = 'Connection pool created';
      if (logObject.options) {
        const { maxIdleTimeMS, minPoolSize, maxPoolSize, maxConnecting, waitQueueTimeoutMS } =
          logObject.options;
        log = {
          ...log,
          maxIdleTimeMS,
          minPoolSize,
          maxPoolSize,
          maxConnecting,
          waitQueueTimeoutMS
        };
      }
      return log;
    case CONNECTION_POOL_READY: