From 2e5a1328a84d627cc81573f59f3a8ffa384fce55 Mon Sep 17 00:00:00 2001
From: Mitsuhiro Tanda <mitsuhiro.tanda@gmail.com>
Date: Fri, 4 Mar 2016 11:36:30 +0900
Subject: [PATCH 1/2] (cloudwatch) support interval template variable

---
 .../plugins/datasource/cloudwatch/datasource.js    | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/public/app/plugins/datasource/cloudwatch/datasource.js b/public/app/plugins/datasource/cloudwatch/datasource.js
index a034134e657..34522344931 100644
--- a/public/app/plugins/datasource/cloudwatch/datasource.js
+++ b/public/app/plugins/datasource/cloudwatch/datasource.js
@@ -3,9 +3,10 @@ define([
   'lodash',
   'moment',
   'app/core/utils/datemath',
+  'app/core/utils/kbn',
   './annotation_query',
 ],
-function (angular, _, moment, dateMath, CloudWatchAnnotationQuery) {
+function (angular, _, moment, dateMath, kbn, CloudWatchAnnotationQuery) {
   'use strict';
 
   /** @ngInject */
@@ -36,7 +37,16 @@ function (angular, _, moment, dateMath, CloudWatchAnnotationQuery) {
         query.statistics = target.statistics;
 
         var range = end - start;
-        query.period = parseInt(target.period, 10) || (query.namespace === 'AWS/EC2' ? 300 : 60);
+        if (!target.period) {
+          query.period = (query.namespace === 'AWS/EC2') ? 300 : 60;
+        } else if (/^\d+$/.test(target.period)) {
+          query.period = parseInt(target.period, 10);
+        } else {
+          query.period = kbn.interval_to_seconds(templateSrv.replace(target.period, options.scopedVars));
+        }
+        if (query.period < 60) {
+          query.period = 60;
+        }
         if (range / query.period >= 1440) {
           query.period = Math.ceil(range / 1440 / 60) * 60;
         }

From ab9abee67b6292e0ecb135346aaa2e563f1c92ce Mon Sep 17 00:00:00 2001
From: Mitsuhiro Tanda <mitsuhiro.tanda@gmail.com>
Date: Tue, 19 Apr 2016 23:14:41 +0900
Subject: [PATCH 2/2] (cloudwatch) add test for interval variable

---
 .../cloudwatch/specs/datasource_specs.ts      | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/public/app/plugins/datasource/cloudwatch/specs/datasource_specs.ts b/public/app/plugins/datasource/cloudwatch/specs/datasource_specs.ts
index 86e085b3f6f..cd13c4502d7 100644
--- a/public/app/plugins/datasource/cloudwatch/specs/datasource_specs.ts
+++ b/public/app/plugins/datasource/cloudwatch/specs/datasource_specs.ts
@@ -82,6 +82,35 @@ describe('CloudWatchDatasource', function() {
       ctx.$rootScope.$apply();
     });
 
+    it('should generate the correct query with interval variable', function(done) {
+      ctx.templateSrv.data = {
+        period: '10m'
+      };
+
+      var query = {
+        range: { from: 'now-1h', to: 'now' },
+        targets: [
+          {
+            region: 'us-east-1',
+            namespace: 'AWS/EC2',
+            metricName: 'CPUUtilization',
+            dimensions: {
+              InstanceId: 'i-12345678'
+            },
+            statistics: ['Average'],
+            period: '[[period]]'
+          }
+        ]
+      };
+
+      ctx.ds.query(query).then(function() {
+        var params = requestParams.data.parameters;
+        expect(params.period).to.be(600);
+        done();
+      });
+      ctx.$rootScope.$apply();
+    });
+
     it('should return series list', function(done) {
       ctx.ds.query(query).then(function(result) {
         expect(result.data[0].target).to.be('CPUUtilization_Average');