slf/lib/Logger.js

Simple Logging Facade

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "Logger", {
    enumerable: true,
    get: function() {
        return Logger;
    }
});
var _loggerFactory = require("./LoggerFactory");
var _utils = require("./utils");
function _arrayLikeToArray(arr, len) {
    if (len == null || len > arr.length) len = arr.length;
    for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
    return arr2;
}
function _arrayWithoutHoles(arr) {
    if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}
function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
        throw new TypeError("Cannot call a class as a function");
    }
}
function _iterableToArray(iter) {
    if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}
function _nonIterableSpread() {
    throw new TypeError("Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _toConsumableArray(arr) {
    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}
function _unsupportedIterableToArray(o, minLen) {
    if (!o) return;
    if (typeof o === "string") return _arrayLikeToArray(o, minLen);
    var n = Object.prototype.toString.call(o).slice(8, -1);
    if (n === "Object" && o.constructor) n = o.constructor.name;
    if (n === "Map" || n === "Set") return Array.from(n);
    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
var checkIfLogFuncKey = function(key) {
    return Object.keys(Logger.prototype).filter(function(key) {
        return key !== "log";
    }).includes(key);
};
var Logger = /*#__PURE__*/ function() {
    "use strict";
    function Logger(name, sink, chain, logLevel) {
        var _this = this;
        _classCallCheck(this, Logger);
        this.name = name;
        this.sink = sink;
        this.chain = chain;
        this.logLevel = logLevel;
        this.log = function(level) {
            for(var _len = arguments.length, params = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
                params[_key - 1] = arguments[_key];
            }
            if (level) {
                var levelKey = (0, _utils.capitalize)(level);
                if (_loggerFactory.Level[levelKey] < _this.logLevel) {
                    return;
                }
                var event = _this.buildLogEvent(level, params);
                var i = 0;
                // apply middlewares
                var next = function(err, evt) {
                    if (err) {
                        _this.sink(_this.buildLogEvent("error", [
                            err
                        ]));
                    }
                    if (_this.chain && _this.chain[i]) {
                        _this.chain[i++](evt, next);
                    } else {
                        // sink to logger impl
                        _this.sink(evt);
                    }
                };
                // start middleware chain
                next(null, event);
            } else {
                var _$level = params[0];
                if (checkIfLogFuncKey(_$level)) {
                    _this[_$level].apply(_this, params.slice(1));
                } else {
                    _this.info.apply(_this, params);
                }
            }
        };
        this./** Log fine grained informational events that are most useful to debug an application. */ debug = function() {
            for(var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++){
                params[_key] = arguments[_key];
            }
            _this.log.apply(_this, [
                "debug"
            ].concat(_toConsumableArray(params)));
        };
        this./** Log informational messages that highlight the progress of the application at a coarse grained level. */ info = function() {
            for(var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++){
                params[_key] = arguments[_key];
            }
            _this.log.apply(_this, [
                "info"
            ].concat(_toConsumableArray(params)));
        };
        this./** Log potentially harmful situations. */ warn = function() {
            for(var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++){
                params[_key] = arguments[_key];
            }
            _this.log.apply(_this, [
                "warn"
            ].concat(_toConsumableArray(params)));
        };
        this./** Log error events that might still allow the application to continue running. */ error = function() {
            for(var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++){
                params[_key] = arguments[_key];
            }
            _this.log.apply(_this, [
                "error"
            ].concat(_toConsumableArray(params)));
        };
        this./** Log very severe error events that will presumably lead the application to abort- */ critical = function() {
            for(var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++){
                params[_key] = arguments[_key];
            }
            _this.log.apply(_this, [
                "critital"
            ].concat(_toConsumableArray(params)));
        };
    }
    var _proto = Logger.prototype;
    _proto.buildLogEvent = function buildLogEvent(level, params) {
        var event = {
            name: this.name,
            level: level,
            params: params,
            timeStamp: new Date().valueOf()
        };
        return event;
    };
    Logger.getLogger = function getLogger() {
        var name = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : "/";
        return _loggerFactory.LoggerFactory.getLogger(name);
    };
    return Logger;
}();