feat(alerting): reduce states. Make exeuction result configurable.

ref #6444

public/app/features/alerting/alert_def.ts

@@ -37,10 +37,14 @@ var reducerTypes = [
 ];
 
 var noDataModes = [
-  {text: 'OK', value: 'ok'},
   {text: 'Alerting', value: 'alerting'},
   {text: 'No Data', value: 'no_data'},
-  {text: 'Keep Last', value: 'keep_last'},
+  {text: 'Keep Last State', value: 'keep_state'},
+];
+
+var executionErrorModes = [
+  {text: 'Alerting', value: 'alerting'},
+  {text: 'Keep Last State', value: 'keep_state'},
 ];
 
 function createReducerPart(model) {
@@ -48,7 +52,6 @@ function createReducerPart(model) {
   return new QueryPart(model, def);
 }
 
-
 function getStateDisplayModel(state) {
   switch (state) {
     case 'ok': {
@@ -113,6 +116,7 @@ export default {
   conditionTypes: conditionTypes,
   evalFunctions: evalFunctions,
   noDataModes: noDataModes,
+  executionErrorModes: executionErrorModes,
   reducerTypes: reducerTypes,
   createReducerPart: createReducerPart,
   joinEvalMatches: joinEvalMatches,

public/app/features/alerting/alert_tab_ctrl.ts

@@ -19,6 +19,7 @@ export class AlertTabCtrl {
   conditionModels: any;
   evalFunctions: any;
   noDataModes: any;
+  executionErrorModes: any;
   addNotificationSegment;
   notifications;
   alertNotifications;
@@ -42,6 +43,7 @@ export class AlertTabCtrl {
     this.evalFunctions = alertDef.evalFunctions;
     this.conditionTypes = alertDef.conditionTypes;
     this.noDataModes = alertDef.noDataModes;
+    this.executionErrorModes = alertDef.executionErrorModes;
     this.appSubUrl = config.appSubUrl;
   }
 
@@ -140,6 +142,7 @@ export class AlertTabCtrl {
     }
 
     alert.noDataState = alert.noDataState || 'no_data';
+    alert.executionErrorState = alert.executionErrorState || 'alerting';
     alert.frequency = alert.frequency || '60s';
     alert.handler = alert.handler || 1;
     alert.notifications = alert.notifications || [];

public/app/features/alerting/partials/alert_tab.html

@@ -82,7 +82,7 @@
 
 			<div class="gf-form-group">
 				<div class="gf-form">
-          <span class="gf-form-label">If no data points or all values are null</span>
+          <span class="gf-form-label width-18">If no data points or all values are null</span>
           <span class="gf-form-label query-keyword">SET STATE TO</span>
 					<div class="gf-form-select-wrapper">
 						<select class="gf-form-input" ng-model="ctrl.alert.noDataState" ng-options="f.value as f.text for f in ctrl.noDataModes">
@@ -90,6 +90,15 @@
 					</div>
 				</div>
 
+				<div class="gf-form">
+          <span class="gf-form-label width-18">If query exeuction throws an error</span>
+          <span class="gf-form-label query-keyword">SET STATE TO</span>
+					<div class="gf-form-select-wrapper">
+						<select class="gf-form-input" ng-model="ctrl.alert.executionErrorState" ng-options="f.value as f.text for f in ctrl.executionErrorModes">
+						</select>
+					</div>
+				</div>
+
 				<div class="gf-form-button-row">
 					<button class="btn btn-inverse" ng-click="ctrl.test()">
 						Test Rule