Add factory resetting to back-end

app/controllers/state.js

@@ -35,6 +35,15 @@ var update = function update(req, res, next) {
           logger.debug(util.inspect(errReboot));
         }
       });
+    } else if (state === STATES.FACTORY_RESET) {
+      res.json(req.body);
+      systemSvc = new SystemService();
+      systemSvc.factoryReset(function onFactoryReset(errFactoryReset) {
+        if (errFactoryReset) {
+          logger.warn('Failed to factory resetting');
+          logger.debug(util.inspect(errFactoryReset));
+        }
+      });
     } else {
       res.json(req.body);
     }

app/models/state.js

@@ -3,6 +3,7 @@ var mongoose = require('mongoose');
 
 var STATES = {
   REBOOTING: 'rebooting',
+  FACTORY_RESET: 'factory-reset',
   CONFIGURATION_CLOUD: 'configuration-cloud',
   CONFIGURATION_CLOUD_SECURITY: 'configuration-cloud-security',
   CONFIGURATION_USER: 'configuration-user',
@@ -32,6 +33,7 @@ STATE_TRANSITIONS[STATES.REBOOTING] = [
   STATES.CONFIGURATION_CLOUD,
   STATES.CONFIGURATION_USER,
   STATES.CONFIGURATION_GATEWAY,
+  STATES.FACTORY_RESET,
   STATES.READY
 ];
 STATE_TRANSITIONS[STATES.CONFIGURATION_CLOUD] = [
@@ -58,6 +60,7 @@ STATE_TRANSITIONS[STATES.CONFIGURATION_GATEWAY] = [
 ];
 STATE_TRANSITIONS[STATES.READY] = [
   STATES.REBOOTING,
+  STATES.FACTORY_RESET,
   STATES.CONFIGURATION_CLOUD,
   STATES.CONFIGURATION_USER,
   STATES.CONFIGURATION_GATEWAY

app/services/state.js

@@ -35,6 +35,10 @@ function canTransitionToRebooting(from, done) {
   done(null, isAllowedTransition(from, stateModel.STATES.REBOOTING));
 }
 
+function canTransitionToFactoryReset(from, done) {
+  done(null, isAllowedTransition(from, stateModel.STATES.FACTORY_RESET));
+}
+
 function canTransitionToConfigurationCloud(from, done) {
   done(null, isAllowedTransition(from, stateModel.STATES.CONFIGURATION_CLOUD));
 }
@@ -101,6 +105,9 @@ function canTransition(from, to, done) {
     case stateModel.STATES.REBOOTING:
       canTransitionToRebooting(from, done);
       break;
+    case stateModel.STATES.FACTORY_RESET:
+      canTransitionToFactoryReset(from, done);
+      break;
     case stateModel.STATES.CONFIGURATION_CLOUD:
       canTransitionToConfigurationCloud(from, done);
       break;

app/services/system.js

@@ -1,4 +1,19 @@
+var util = require('util');
+
 var exec = require('child_process').exec;
+var bus = require('../dbus');
+var logger = require('../logger');
+
+var SERVICE_NAME = 'br.org.cesar.knot.control';
+var FACTORY_RESET_INTERFACE_NAME = 'br.org.cesar.knot.control.Reset';
+var OBJECT_PATH = '/br/org/cesar/knot/control';
+
+var SystemServiceError = function SystemServiceError(message, code) {
+  this.name = 'SystemServiceError';
+  this.message = message;
+  this.code = code;
+  this.stack = (new Error()).stack;
+};
 
 var SystemService = function SystemService() {
 };
@@ -7,6 +22,31 @@ SystemService.prototype.reboot = function reboot(done) {
   exec('reboot', done);
 };
 
+var logError = function logError(err) { // eslint-disable-line vars-on-top
+  logger.warn('Error communicating with gateway control service');
+  logger.debug(util.inspect(err));
+};
+
+SystemService.prototype.factoryReset = function factoryReset(done) {
+  bus.getInterface(SERVICE_NAME, OBJECT_PATH, FACTORY_RESET_INTERFACE_NAME, function onInterface(getInterfaceErr, iface) { // eslint-disable-line max-len
+    if (getInterfaceErr) {
+      logError(getInterfaceErr);
+      done(new SystemServiceError(getInterfaceErr.message, 500));
+      return;
+    }
+
+    iface.FactoryReset(function onFactoryReset(factoryResetErr) { // eslint-disable-line new-cap
+      if (factoryResetErr) {
+        logError(factoryResetErr);
+        done(new SystemServiceError(factoryResetErr.message, 500));
+        return;
+      }
+
+      done();
+    });
+  });
+};
+
 module.exports = {
   SystemService: SystemService
 };