76 lines
2.1 KiB
JavaScript
76 lines
2.1 KiB
JavaScript
var log4js = require('../log4js');
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var layouts = require('../layouts');
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var Hook = require('hook.io').Hook;
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var util = require('util');
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var Logger = function createLogger(options) {
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var self = this;
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var actualAppender = options.actualAppender;
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Hook.call(self, options);
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self.on('hook::ready', function hookReady() {
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self.on('*::' + options.name + '::log', function log(loggingEvent) {
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deserializeLoggingEvent(loggingEvent);
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actualAppender(loggingEvent);
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});
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});
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}
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util.inherits(Logger, Hook);
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function deserializeLoggingEvent(loggingEvent) {
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loggingEvent.startTime = new Date(loggingEvent.startTime);
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loggingEvent.level.toString = function levelToString() {
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return loggingEvent.level.levelStr;
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};
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}
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function initHook(hookioOptions) {
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var loggerHook;
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if (hookioOptions.mode === 'master') {
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// Start the master hook, handling the actual logging
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loggerHook = new Logger(hookioOptions);
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} else {
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// Start a worker, just emitting events for a master
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loggerHook = new Hook(hookioOptions);
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}
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loggerHook.start();
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return loggerHook;
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}
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function getBufferedHook(hook, eventName) {
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var hookBuffer = [];
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var hookReady = false;
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hook.on('hook::ready', function emptyBuffer() {
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hookBuffer.forEach(function logBufferItem(loggingEvent) {
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hook.emit(eventName, loggingEvent);
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})
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hookReady = true;
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});
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return function log(loggingEvent) {
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if (hookReady) {
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hook.emit(eventName, loggingEvent);
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} else {
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hookBuffer.push(loggingEvent);
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}
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}
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}
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function createAppender(hookioOptions) {
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var loggerHook = initHook(hookioOptions);
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var loggerEvent = hookioOptions.name + '::log';
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return getBufferedHook(loggerHook, loggerEvent);
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}
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function configure(config) {
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var actualAppender;
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if (config.appender && config.mode === 'master') {
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log4js.loadAppender(config.appender.type);
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actualAppender = log4js.appenderMakers[config.appender.type](config.appender);
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config.actualAppender = actualAppender;
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}
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return createAppender(config);
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}
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exports.appender = createAppender;
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exports.configure = configure;
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