add service check functionality to plugin api

lib/core/engine.js

@@ -37,6 +37,15 @@ Engine.prototype.init = function(_options) {
 };
 
 Engine.prototype.startMonitor = function() {
+  var self = this;
+  if (this.plugins) {
+    var servicePlugins = this.plugins.getPluginsFor('serviceChecks');
+    servicePlugins.forEach(function(plugin) {
+      plugin.serviceChecks.forEach(function(pluginCheck) {
+        self.servicesMonitor.addCheck(pluginCheck.checkName, pluginCheck.checkFn, pluginCheck.time);
+      });
+    });
+  }
   this.servicesMonitor.startMonitor();
 };
 

lib/core/plugin.js

@@ -17,6 +17,7 @@ var Plugin = function(options) {
   this.contractsConfigs = [];
   this.contractsFiles = [];
   this.compilers = [];
+  this.serviceChecks = [];
   this.pluginTypes = [];
   this.logger = options.logger;
   this.events = options.events;
@@ -98,6 +99,11 @@ Plugin.prototype.registerConsoleCommand = function(cb) {
   this.pluginTypes.push('console');
 };
 
+Plugin.prototype.registerServiceCheck = function(checkName, checkFn, time) {
+  this.serviceChecks.push({checkName: checkName, checkFn: checkFn, time: time});
+  this.pluginTypes.push('serviceChecks');
+};
+
 Plugin.prototype.has = function(pluginType) {
   return this.pluginTypes.indexOf(pluginType) >= 0;
 };

test_app/embark.json

@@ -14,6 +14,7 @@
   "buildDir": "dist/",
   "config": "config/",
   "plugins": {
-    "embark-babel": {"files": ["**/*.js", "**/*.jsx", "!**/_vendor/*.js"]}
+    "embark-babel": {"files": ["**/*.js", "**/*.jsx", "!**/_vendor/*.js"]},
+    "embark-service": {}
   }
 }

test_app/extensions/embark-service/index.js

@@ -0,0 +1,5 @@
+module.exports = function(embark) {
+  embark.registerServiceCheck('PluginService', function(cb) {
+    cb({name: "ServiceName", status: "green"});
+  });
+};

test_app/extensions/embark-service/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "embark-service",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

test_app/package.json

@@ -15,6 +15,7 @@
   },
   "dependencies": {
     "embark-babel": "^1.0.0",
+    "embark-service": "./extensions/embark-service",
     "ethereumjs-testrpc": "^3.0.3"
   }
 }