integrate Config into Service for private serviceConfig that is creat…

…ed upon service configuration

see issue #9

Service.js

@@ -8,7 +8,7 @@
 "use strict";
 
 const EventEmitter = require('events').EventEmitter;
-
+const Config = require('./Config');
 
 /**
  * Abstract class that defines the srvoa service interface.
@@ -20,6 +20,12 @@ class Service extends EventEmitter {
      * @property serviceManager {ServiceManager}
      */
 
+    /**
+     * The config passed to configure as config service..
+     *
+     * @property serviceConfig {Config}
+     */
+
     /**
      * Create a new service instance.
      *
@@ -30,6 +36,7 @@ class Service extends EventEmitter {
         super();
 
         this.serviceManager = serviceManager || null;
+        this.serviceConfig = null;
     }
 
     /**
@@ -60,7 +67,7 @@ class Service extends EventEmitter {
      * @return  {Service}
      */
     configure(config) {
-        return this;
+        return this._applyConfig(config);
     }
 
     /**
@@ -80,6 +87,23 @@ class Service extends EventEmitter {
     launch() {
         return this;
     }
+
+    /**
+     * Take a config hash and turn it into a config instance that is stored as `serviceConfig` property.
+     *
+     * @param config
+     * @returns {Service}
+     * @private
+     */
+    _applyConfig(config) {
+        this.serviceConfig = new Config;
+
+        if (config) {
+            this.serviceConfig.setConfig(config);
+        }
+
+        return this;
+    }
 }
 
 module.exports = Service;

test/Service.js

@@ -7,6 +7,7 @@
 
 const
     assert = require('assert'),
+    Config = require('../Config'),
     Service = require('../Service'),
     ServiceManager = require('../ServiceManager'),
     EventEmitter = require('events').EventEmitter;
@@ -69,4 +70,30 @@ describe('srvoa::service', function() {
 
         assert(srv.getServiceManager() === serviceManager);
     });
+
+    it('creates internal serviceConfig during configuration.', function() {
+        var srv = new Service();
+
+        assert(srv.serviceConfig === null, 'Expected `serviceConfig` to be null before configure is called.');
+
+        srv.configure();
+
+        assert(srv.serviceConfig instanceof Config, 'Expected `serviceConfig` to be instance of `Config` after configure is called.');
+    });
+
+    it('should pass the right config hash to serviceConfig.', function() {
+        var srv = new Service();
+
+        srv.configure({
+            test: {
+                test2: 1
+            }
+        });
+
+        assert(srv.serviceConfig.get('test.test2') === 1, 'Expected config key `test.test2` to equal 1.');
+
+        srv.configure({});
+
+        assert(srv.serviceConfig.get('test.test2') === undefined, 'Expected config key `test.test2` to equal undefined after resetting configuration.');
+    });
 });