should allow one default datasource per organisation using provisioning

pkg/services/provisioning/datasources/config_reader.go

@@ -83,7 +83,7 @@ func (cr *configReader) parseDatasourceConfig(path string, file os.FileInfo) (*D
 }
 
 func validateDefaultUniqueness(datasources []*DatasourcesAsConfig) error {
-	defaultCount := 0
+	defaultCount := map[int64]int{}
 	for i := range datasources {
 		if datasources[i].Datasources == nil {
 			continue
@@ -95,8 +95,8 @@ func validateDefaultUniqueness(datasources []*DatasourcesAsConfig) error {
 			}
 
 			if ds.IsDefault {
-				defaultCount++
-				if defaultCount > 1 {
+				defaultCount[ds.OrgId] = defaultCount[ds.OrgId] + 1
+				if defaultCount[ds.OrgId] > 1 {
 					return ErrInvalidConfigToManyDefault
 				}
 			}

pkg/services/provisioning/datasources/config_reader_test.go

@@ -19,6 +19,7 @@ var (
 	allProperties                   = "testdata/all-properties"
 	versionZero                     = "testdata/version-0"
 	brokenYaml                      = "testdata/broken-yaml"
+	multipleOrgsWithDefault         = "testdata/multiple-org-default"
 
 	fakeRepo *fakeRepository
 )
@@ -73,6 +74,19 @@ func TestDatasourceAsConfig(t *testing.T) {
 			})
 		})
 
+		Convey("Multiple datasources in different organizations with is_default in each organization", func() {
+			dc := newDatasourceProvisioner(logger)
+			err := dc.applyChanges(multipleOrgsWithDefault)
+			Convey("should not raise error", func() {
+				So(err, ShouldBeNil)
+				So(len(fakeRepo.inserted), ShouldEqual, 4)
+				So(fakeRepo.inserted[0].IsDefault, ShouldBeTrue)
+				So(fakeRepo.inserted[0].OrgId, ShouldEqual, 1)
+				So(fakeRepo.inserted[2].IsDefault, ShouldBeTrue)
+				So(fakeRepo.inserted[2].OrgId, ShouldEqual, 2)
+			})
+		})
+
 		Convey("Two configured datasource and purge others ", func() {
 			Convey("two other datasources in database", func() {
 				fakeRepo.loadAll = []*models.DataSource{

pkg/services/provisioning/datasources/datasources.go

@@ -11,7 +11,7 @@ import (
 )
 
 var (
-	ErrInvalidConfigToManyDefault = errors.New("datasource.yaml config is invalid. Only one datasource can be marked as default")
+	ErrInvalidConfigToManyDefault = errors.New("datasource.yaml config is invalid. Only one datasource per organization can be marked as default")
 )
 
 func Provision(configDirectory string) error {

pkg/services/provisioning/datasources/testdata/multiple-org-default/config.yaml

@@ -0,0 +1,27 @@
+apiVersion: 1
+
+datasources:
+  - orgId: 1
+    name: prometheus
+    type: prometheus
+    isDefault: True
+    access: proxy
+    url: http://prometheus.example.com:9090
+  - name: Graphite
+    type: graphite
+    access: proxy
+    url: http://localhost:8080
+    is_default: true
+  - orgId: 2
+    name: prometheus
+    type: prometheus
+    isDefault: True
+    access: proxy
+    url: http://prometheus.example.com:9090
+  - orgId: 2
+    name: Graphite
+    type: graphite
+    access: proxy
+    url: http://localhost:8080
+    is_default: true
+