datasource API: add list and find by name functions

Author: sancyx

datasource.go

@@ -351,6 +351,32 @@ func (c *Client) DataSourceByUID(uid string) (*DataSource, error) {
 	return result, err
 }
 
+// DataSourceIdByName returns the Grafana data source id by name.
+func (c *Client) DataSourceIdByName(name string) (int64, error) {
+	path := fmt.Sprintf("/api/datasources/id/%s", name)
+
+	result := struct {
+		ID int64 `json:"id"`
+	}{}
+	err := c.request("GET", path, nil, nil, &result)
+	if err != nil {
+		return result.ID, err
+	}
+
+	return result.ID, err
+}
+
+// DataSources returns all data sources as defined in Grafana.
+func (c *Client) DataSources() ([]*DataSource, error) {
+	result := make([]*DataSource, 0)
+	err := c.request("GET", "/api/datasources", nil, nil, &result)
+	if err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
 // DeleteDataSource deletes the Grafana data source whose ID it's passed.
 func (c *Client) DeleteDataSource(id int64) error {
 	path := fmt.Sprintf("/api/datasources/%d", id)

datasource_test.go

@@ -8,6 +8,8 @@ import (
 
 const (
 	createdDataSourceJSON = `{"id":1,"uid":"myuid0001","message":"Datasource added", "name": "test_datasource"}`
+	getDataSourceJSON = `{"id":1}`
+	getDataSourcesJSON = `[{"id":1,"name":"foo","type":"cloudwatch","url":"http://some-url.com","access":"access","isDefault":true}]`
 )
 
 func TestNewDataSource(t *testing.T) {
@@ -235,3 +237,36 @@ func TestNewAzureDataSource(t *testing.T) {
 		t.Error("datasource creation response should return the created datasource ID")
 	}
 }
+
+func TestDataSources(t *testing.T) {
+	server, client := gapiTestTools(t, 200, getDataSourcesJSON)
+	defer server.Close()
+
+	datasources, err := client.DataSources()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(pretty.PrettyFormat(datasources))
+
+	if len(datasources) != 1 {
+		t.Error("Length of returned datasources should be 1")
+	}
+	if datasources[0].ID != 1 || datasources[0].Name != "foo" {
+		t.Error("Not correctly parsing returned datasources.")
+	}
+}
+
+func TestDataSourceIdByName(t *testing.T) {
+	server, client := gapiTestTools(t, 200, getDataSourceJSON)
+	defer server.Close()
+
+	datasourceId, err := client.DataSourceIdByName("foo")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if datasourceId != 1 {
+		t.Error("Not correctly parsing returned datasources.")
+	}
+}