Live: declarative processing pipeline, input -> frames -> output, toggle protected POC (#37644)

pkg/services/live/pipeline/processor_multiple.go

@@ -0,0 +1,29 @@
+package pipeline
+
+import (
+	"context"
+
+	"github.com/grafana/grafana-plugin-sdk-go/data"
+)
+
+// MultipleProcessor can combine several Processor and
+// execute them sequentially.
+type MultipleProcessor struct {
+	Processors []Processor
+}
+
+func (m MultipleProcessor) Process(ctx context.Context, vars ProcessorVars, frame *data.Frame) (*data.Frame, error) {
+	for _, p := range m.Processors {
+		var err error
+		frame, err = p.Process(ctx, vars, frame)
+		if err != nil {
+			logger.Error("Error processing frame", "error", err)
+			return nil, err
+		}
+	}
+	return frame, nil
+}
+
+func NewMultipleProcessor(processors ...Processor) *MultipleProcessor {
+	return &MultipleProcessor{Processors: processors}
+}