You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: dataServer.go
    path of file: ./repos/permify/internal/servers
    
    the code of the file until where you have to start completion: package servers

import (
	"log/slog"

	otelCodes "go.opentelemetry.io/otel/codes"
	"golang.org/x/net/context"
	"google.golang.org/grpc/status"

	"github.com/Permify/permify/internal/storage"
	"github.com/Permify/permify/internal/validation"
	"github.com/Permify/permify/pkg/attribute"
	"github.com/Permify/permify/pkg/database"
	v1 "github.com/Permify/permify/pkg/pb/base/v1"
	"github.com/Permify/permify/pkg/tuple"
)

// DataServer - Structure for Data Server
type DataServer struct {
	v1.UnimplementedDataServer

	sr storage.SchemaReader
	dr stora
    
func (r *DataServer) Delete(ctx context.Context, request *v1.DataDeleteRequest) (*v1.DataDeleteResponse, error) {
	ctx, span := tracer.Start(ctx, "data.delete")
	defer span.End()

	v := request.Validate()
	if v != nil {
		return nil, status.Error(GetStatus(v), v.Error())
	}

	err := validation.ValidateFilters(request.GetTupleFilter(), request.GetAttributeFilter())
	if err != nil {
		return nil, status.Error(GetStatus(v), v.Error())
	}

	snap, err := r.dw.Delete(ctx, request.GetTenantId(), request.GetTupleFilter(), request.GetAttributeFilter())
	if err != nil {
		span.RecordError(err)
		span.SetStatus(otelCodes.Error, err.Error())
		slog.Error(err.Error())
		return nil, status.Error(GetStatus(err), err.Error())
	}

	return &v1.DataDeleteResponse{
		SnapToken: snap.String(),
	}, nil
}