spice.go: handle empty schema case

spice.go

@@ -3,19 +3,22 @@ package main
 import (
 	"context"
 	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"strings"
+
 	"github.com/alecthomas/kong"
 	v1 "github.com/authzed/authzed-go/proto/authzed/api/v1"
 	"github.com/authzed/authzed-go/v1"
 	"github.com/authzed/grpcutil"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/status"
 	"gopkg.in/yaml.v3"
-	"io"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strconv"
-	"strings"
 )
 
 const MigrationResourceType = "spice_schema_migrations/migration"
@@ -135,7 +138,7 @@ func getCurrentVersion(ctx context.Context, client *authzed.Client) int {
 		OptionalLimit: 0,
 	})
 	if err != nil {
-		fmt.Println("could not read relationships")
+		fmt.Println("could not open relationship stream")
 		panic(err)
 	}
 
@@ -145,6 +148,11 @@ func getCurrentVersion(ctx context.Context, client *authzed.Client) int {
 		if err == io.EOF {
 			return 0
 		}
+		if statusErr, ok := status.FromError(err); ok {
+			if statusErr.Code() == codes.FailedPrecondition && statusErr.Message() == "object definition `spice_schema_migrations/migration` not found" {
+				return 0
+			}
+		}
 		fmt.Println("could not read relationships")
 		panic(err)
 	}