added align start option

Author: rdettai

kairosdb/editor.html

@@ -315,6 +315,13 @@
         <i class="icon-warning-sign"></i>
     </a>
 </li>
+<li class="grafana-target-segment" ng-show="hasSamplingRate" bs-tooltip="'Align samples to range start times'">
+    &nbsp;align&nbsp;
+    <input class="grafana-target-option-checkbox"
+           type="checkbox"
+           ng-init="target.horAggregator.alignStartTime=true"
+           ng-model="target.horAggregator.alignStartTime"> 
+</li>
 
 <li ng-show="hasUnit" class="grafana-target-segment">
     every

kairosdb/kairosdbDatasource.js

@@ -200,7 +200,7 @@ define([
             if(chosenAggregator.sampling_rate) {
               returnedAggregator.sampling = KairosDBDatasource.prototype.convertToKairosInterval(chosenAggregator.sampling_rate);
               returnedAggregator.align_sampling = true;
-              returnedAggregator.align_start_time=true;
+              returnedAggregator.align_start_time=chosenAggregator.align_start_time;
             }
             if(chosenAggregator.unit) {
               returnedAggregator.unit = chosenAggregator.unit+'s';

kairosdb/kairosdbTargetCtrl.js

@@ -245,7 +245,8 @@ define([
           var aggregator = {
             name:$scope.target.currentHorizontalAggregatorName
           };
-          if($scope.hasSamplingRate) {aggregator.sampling_rate = $scope.target.horAggregator.samplingRate;}
+          if($scope.hasSamplingRate) {aggregator.sampling_rate = $scope.target.horAggregator.samplingRate;
+            aggregator.align_start_time = $scope.target.horAggregator.alignStartTime;}
           if($scope.hasUnit) {aggregator.unit = $scope.target.horAggregator.unit;}
           if($scope.hasFactor) {aggregator.factor = $scope.target.horAggregator.factor;}
           if($scope.hasPercentile) {aggregator.percentile = $scope.target.horAggregator.percentile;}