RPC: add no-op methods (#36)

This prevents agent failures due to unimplemented RPC methods.

internal/executor/rpc/noop.go

@@ -0,0 +1,56 @@
+package rpc
+
+import (
+	"context"
+	"github.com/cirruslabs/cirrus-ci-agent/api"
+	"github.com/golang/protobuf/ptypes/empty"
+	"io"
+)
+
+func (r *RPC) ReportAnnotations(ctx context.Context, req *api.ReportAnnotationsCommandRequest) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}
+
+func (r *RPC) SaveLogs(stream api.CirrusCIService_SaveLogsServer) error {
+	for {
+		_, err := stream.Recv()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			r.logger.Warnf("error while receiving saved logs: %v", err)
+			return err
+		}
+	}
+
+	if err := stream.SendAndClose(&api.UploadLogsResponse{}); err != nil {
+		r.logger.Warnf("error while closing saved logs stream: %v", err)
+		return err
+	}
+
+	return nil
+}
+
+func (r *RPC) UploadArtifacts(stream api.CirrusCIService_UploadArtifactsServer) error {
+	for {
+		_, err := stream.Recv()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			r.logger.Warnf("error while receiving artifacts: %v", err)
+			return err
+		}
+	}
+
+	if err := stream.SendAndClose(&api.UploadArtifactsResponse{}); err != nil {
+		r.logger.Warnf("error while closing artifacts stream: %v", err)
+		return err
+	}
+
+	return nil
+}
+
+func (r *RPC) ReportAgentLogs(ctx context.Context, req *api.ReportAgentLogsRequest) (*empty.Empty, error) {
+	return &empty.Empty{}, nil
+}