Wrapperi statistika

controllers/api/v1/statistics.js

+var logger = require('log4js').getLogger('statistics_controller');
+var express = require('express');
+var router = express.Router();
+var statisticsService = require(__base + '/src/service/statisticsService');
+
+router.get('/', function(req, res) {
+
+    statisticsService.getServerStatistics( req, function (err, data) {
+        if(err){
+            res.code(520);
+            return res.send(err);
+        }
+        return res.send(data);
+    });
+});
+
+module.exports = router;

controllers/index.js

@@ -3,6 +3,7 @@ var router = express.Router();
 var config = require(__base + 'config');
 
 router.use('/api/v1/service', require(__base + 'controllers/api/v1/service'));
+router.use('/api/v1/statistics', require(__base + 'controllers/api/v1/statistics'));
 
 /* GET home page. Service description from config */
 router.get('/', function( req, res ) {

package.json

@@ -25,6 +25,7 @@
     "morgan": "~1.5.3",
     "multer": "0.1.6",
     "node-schedule": "^0.2.9",
+    "nodejs-disks": "^0.2.1",
     "nodemailer": "^1.4.0",
     "randomstring": "^1.0.5",
     "recursive-readdir": "^1.2.1",

src/service/statisticsService.js

+/**
+ * Created by priit on 2.10.15.
+ */
+var logger = require('log4js').getLogger('statistics_service');
+var async = require('async');
+var os = require('os');
+var njds = require('nodejs-disks');
+
+function StatisticsService() {
+    var self = this;
+
+    this.getServerStatistics = function(req, cb) {
+
+        var summary = {};
+
+        async.waterfall([
+                function (callback) {
+                    self.getMemoryStatistics(function (err, data) {
+                        summary.memory = data;
+                        callback();
+                    });
+                },
+                function (callback) {
+                    self.getDrivesStatistics(function (err, drives) {
+                        summary.drives = drives;
+                        callback();
+                    });
+                },
+                function (callback) {
+                    self.getCPULoad(function (err, data) {
+                        summary.load = data;
+                        callback();
+                    });
+                }
+            ],
+            function (err) {
+                cb(err, summary);
+            }
+        );
+    };
+
+
+    this.getMemoryStatistics = function (callback) {
+
+        var total = Math.round( os.totalmem() / 10737418,24 ) / 100;
+        var used = Math.round( (os.totalmem() - os.freemem()) / 10737418,24 ) / 100;
+        var systemMemory = {
+            total: total + ' GB',
+            used: used + ' GB'
+        };
+        callback( null, systemMemory);
+    };
+
+
+    this.getDrivesStatistics = function ( callback ) {
+        var drivesSummary = [];
+        njds.drives( function (err, drives) {
+                njds.drivesDetail(
+                    drives,
+                    function (err, data) {
+                        for(var i in data) {
+
+                            var drive = {
+                                name: data[i].drive,
+                                total: data[i].total,
+                                used: data[i].used
+                            };
+                            drivesSummary.push(drive);
+                        }
+                        callback(null, drivesSummary);
+                    }
+                );
+            }
+        )
+    };
+
+    this.getCPULoad = function (callback) {
+        var loads = os.loadavg();
+        for(i in loads){
+            var load = loads[i];
+            loads[i] = Math.round(load * 100) / 100;
+        }
+        loads.push( os.cpus().length );
+        callback( null, loads);
+    }
+}
+
+module.exports = new StatisticsService();
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