CLI: Add datasource:info command

Describes the full datasource details given an account and
datasource name.

pkg/services/sqlstore/datasource.go

@@ -15,6 +15,7 @@ func init() {
 	bus.AddHandler("sql", DeleteDataSource)
 	bus.AddHandler("sql", UpdateDataSource)
 	bus.AddHandler("sql", GetDataSourceById)
+	bus.AddHandler("sql", GetDataSourceByName)
 }
 
 func GetDataSourceById(query *m.GetDataSourceByIdQuery) error {
@@ -27,6 +28,16 @@ func GetDataSourceById(query *m.GetDataSourceByIdQuery) error {
 	return err
 }
 
+func GetDataSourceByName(query *m.GetDataSourceByNameQuery) error {
+	sess := x.Limit(100, 0).Where("account_id=? AND name=?", query.AccountId, query.Name)
+	has, err := sess.Get(&query.Result)
+
+	if !has {
+		return m.ErrDataSourceNotFound
+	}
+	return err
+}
+
 func GetDataSources(query *m.GetDataSourcesQuery) error {
 	sess := x.Limit(100, 0).Where("account_id=?", query.AccountId).Asc("name")