@aimee-blue/ab-service-kit/lib/shared/logging/containerFriendlyLogger.js

Aimee Blue Service Template

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.trimWhitespace = trimWhitespace;
exports.isNotEmptyOrLineBreak = isNotEmptyOrLineBreak;
exports.transformValue = transformValue;
exports.friendlyLogEntry = friendlyLogEntry;
exports.createContainerFriendlyLogger = void 0;

var _ = require(".");

var _util = _interopRequireDefault(require("util"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function trimWhitespace(arg) {
  if (typeof arg === 'string') {
    return arg.replace(/^(\s*\n\s*|\s)+/gu, '').replace(/(\s*\n\s*|\s)+$/gu, '');
  }

  return arg;
}

function isNotEmptyOrLineBreak(arg) {
  if (typeof arg === 'string') {
    const trimmed = arg;

    if (trimmed.length === 0) {
      return false;
    }
  }

  return true;
}

const allowedTypes = ['string', 'number', 'boolean'];

function transformValue(arg) {
  if (allowedTypes.includes(typeof arg)) {
    return arg;
  }

  return _util.default.inspect(arg, {
    compact: true,
    colors: false,
    depth: 3
  });
}

function friendlyLogEntry(...args) {
  return JSON.stringify(args.map(trimWhitespace).filter(isNotEmptyOrLineBreak).map(transformValue));
}
/**
 * Converts the whole logging entry into a single JSON string which
 * makes this compatible with Docker and allow multiline data like
 * exceptions to be retained within same log entry.
 */


const createContainerFriendlyLogger = () => {
  const logger = (0, _.createBasicLogger)();
  return Object.freeze({
    log: (...args) => logger.log(friendlyLogEntry(...args)),
    warn: (...args) => logger.warn(friendlyLogEntry(...args)),
    error: (...args) => logger.error(friendlyLogEntry(...args))
  });
};

exports.createContainerFriendlyLogger = createContainerFriendlyLogger;
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