add basic server config validation

app.js

@@ -12,7 +12,8 @@ var env = process.env.NODE_ENV || 'development',
 	notifier = require('./lib/notifier'),
 	project = require('./lib/project'),
 	libLogger = require('./lib/logger'),
-	EventEmitter = require('events').EventEmitter;
+	EventEmitter = require('events').EventEmitter,
+	validateConfig = require('./lib/validateConfig');
 
 var app = new EventEmitter(),
 	logger = libLogger('app'),
@@ -181,6 +182,11 @@ Steppy(
 
 		reader.load(app.config.paths.data, 'config', this.slot());
 	},
+	function(err, mkdirResult, config) {
+		this.pass(mkdirResult);
+
+		validateConfig(config, this.slot());
+	},
 	function(err, mkdirResult, config) {
 		_(app.config).defaults(config);
 		_(app.config).defaults(configDefaults);

data/config.yaml

@@ -1,7 +1,7 @@
 
-plugins:
-    # - nci-mail-notification
-    # - nci-jabber-notification
+# plugins:
+#     - nci-mail-notification
+#     - nci-jabber-notification
 
 nodes:
     - type: local
@@ -14,7 +14,6 @@ http:
 
 storage:
     backend: memdown
-    # backend: leveldown
 
 notify:
     mail:

lib/validateConfig.js

@@ -0,0 +1,53 @@
+'use strict';
+
+var Steppy = require('twostep').Steppy,
+	validateParams = require('./validateParams');
+
+module.exports = function(config, callback) {
+	Steppy(
+		function() {
+			validateParams(config, {
+				type: 'object',
+				properties: {
+					plugins: {
+						type: 'array',
+						items: {type: 'string'}
+					},
+					nodes: {
+						type: 'array',
+						required: true,
+						items: {
+							type: 'object',
+							properties: {
+								type: {type: 'string', enum: ['local']},
+								maxExecutorsCount: {type: 'integer'}
+							}
+						},
+						minItems: 1
+					},
+					storage: {
+						type: 'object',						
+						required: true,
+						properties: {
+							backend: {type: 'string', required: true}
+						}
+					},
+					notify: {
+						type: 'object'
+					}
+				},
+				additionalProperties: true
+			});
+
+			this.pass(null);
+		},
+		function(err) {
+			if (err) {
+				err.message = (
+					'Error during validation server config: "' + err.message
+				);
+			}
+			callback(err, config);
+		}
+	);
+};