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logger.js
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logger.js
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/*
* Copyright 2011 Rackspace
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
var log = require('logmagic').local('web.middleware.logger');
module.exports = function() {
return function logger(req, res, next) {
req._startTime = new Date();
// mount safety
if (req._logging) {
return next();
}
// flag as logging
req._logging = true;
// proxy end to output loggging
var end = res.end;
res.end = function(chunk, encoding) {
// Make sure the end function actually executes
res.end = end;
res.end(chunk, encoding);
// Build our logging information
var obj = {};
obj['response-time'] = new Date() - req._startTime;
obj['remote-addr'] = req.socket &&
(req.socket.remoteAddress ||
(req.socket.socket && req.socket.socket.remoteAddress));
obj.method = req.method;
obj['http-version'] = req.httpVersionMajor + '.' + req.httpVersionMinor;
obj.status = res.statusCode;
obj['content-length'] = res._headers['content-length'];
obj.referrer = req.headers.referer;
obj['user-agent'] = req.headers['user-agent'];
obj.txnId = req.txnId;
// Log using logmagic our access info
log.info(req.originalUrl, obj);
};
next();
};
};