stackdriver: skeleton for more query types on the backend

pkg/tsdb/stackdriver/annotation_query.go

@@ -0,0 +1,24 @@
+package stackdriver
+
+import (
+	"context"
+
+	"github.com/grafana/grafana/pkg/tsdb"
+)
+
+func (e *StackdriverExecutor) executeAnnotationQuery(ctx context.Context, tsdbQuery *tsdb.TsdbQuery) (*tsdb.Response, error) {
+	result := &tsdb.Response{
+		Results: make(map[string]*tsdb.QueryResult),
+	}
+
+	_, err := e.buildAnnotationQuery(tsdbQuery)
+	if err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (e *StackdriverExecutor) buildAnnotationQuery(tsdbQuery *tsdb.TsdbQuery) (*StackdriverQuery, error) {
+	return &StackdriverQuery{}, nil
+}