Merge 0189cdac06 into 359a6a5762

package.json

@@ -41,6 +41,7 @@
     "bcryptjs": "^2.1.0",
     "bluebird": "^3.1.1",
     "body-parser": "^1.12.0",
+    "bunyan": "^1.8.1",
     "canonical-json": "0.0.4",
     "debug": "^2.1.2",
     "depd": "^1.0.0",

server/middleware/logger.js

@@ -0,0 +1,74 @@
+// Copyright IBM Corp. 2014,2015. All Rights Reserved.
+// Node module: loopback
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+var bunyan = require('bunyan');
+var loopback = require('../../lib/loopback');
+var util = require('util');
+var path = require('path');
+
+module.exports = loggerMiddleware;
+
+function loggerMiddleware(options) {
+  var logPath = options.path || path.resolve('logs', 'info.log');
+  var defaultLogLevel = process.env.LOG_LEVEL || 'info';
+  var defaultOptions = {
+    name: 'Loopback',
+    // decides what to log
+    log: {
+      request: true,
+    },
+    streams: [
+      {
+        level: defaultLogLevel,
+        stream: process.stdout,
+      },
+      {
+        level: defaultLogLevel,
+        type: 'file',
+        path: logPath,
+      },
+    ],
+  };
+  var options = util._extend(defaultOptions, options);
+  var logger = bunyan.createLogger(options);
+
+
+  return function(req, res, next) {
+    var app = req.app;
+
+    // use singleton instance of logger?
+    if (!app.get('logger')) {
+      app.set('logger', logger);
+    }
+
+    if (options.log.request) {
+      bindMethod(req, res, logRequest);
+    }
+
+    next();
+  };
+
+  function bindMethod(req, res, method) {
+    res.on('finish', function() { method(req, res); });
+  }
+
+  function logRequest(req, res) {
+    var remoteMethod = req.remotingContext.methodString;
+    var data = {
+      action: options.log.request.action || 'request',
+      verb: req.method,
+      path: req.url,
+      statusCode: res.statusCode,
+      remoteMethod: remoteMethod,
+    };
+    //log data
+    if (res.statusCode >= 200 && res.statusCode < 300)
+      logger.info(data);
+    else if (res.statusCode < 400)
+      logger.warn(data);
+    else
+      logger.error(data);
+  }
+};