75 lines
1.8 KiB
JavaScript
75 lines
1.8 KiB
JavaScript
// Copyright IBM Corp. 2014,2015. All Rights Reserved.
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// Node module: loopback
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// This file is licensed under the MIT License.
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// License text available at https://opensource.org/licenses/MIT
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var bunyan = require('bunyan');
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var loopback = require('../../lib/loopback');
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var util = require('util');
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var path = require('path');
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module.exports = loggerMiddleware;
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function loggerMiddleware(options) {
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var logPath = options.path || path.resolve('logs', 'info.log');
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var defaultLogLevel = process.env.LOG_LEVEL || 'info';
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var defaultOptions = {
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name: 'Loopback',
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// decides what to log
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log: {
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request: true,
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},
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streams: [
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{
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level: defaultLogLevel,
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stream: process.stdout,
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},
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{
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level: defaultLogLevel,
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type: 'file',
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path: logPath,
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},
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],
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};
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var options = util._extend(defaultOptions, options);
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var logger = bunyan.createLogger(options);
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return function(req, res, next) {
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var app = req.app;
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// use singleton instance of logger?
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if (!app.get('logger')) {
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app.set('logger', logger);
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}
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if (options.log.request) {
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bindMethod(req, res, logRequest);
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}
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next();
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};
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function bindMethod(req, res, method) {
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res.on('finish', function() { method(req, res); });
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}
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function logRequest(req, res) {
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var remoteMethod = req.remotingContext.methodString;
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var data = {
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action: options.log.request.action || 'request',
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verb: req.method,
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path: req.url,
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statusCode: res.statusCode,
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remoteMethod: remoteMethod,
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};
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//log data
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if (res.statusCode >= 200 && res.statusCode < 300)
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logger.info(data);
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else if (res.statusCode < 400)
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logger.warn(data);
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else
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logger.error(data);
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}
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};
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