chore: reorg imports, format code, make MaxRetires default to 0 (#1165)

* chore: reverse the order of stopping services

* chore: reverse the order of stopping services

* chore: reorg imports, format code

* chore: format code, and refactor

* feat: change MaxRetries default to 0, disable retry

core/retry/retryinterceptor_test.go

@@ -2,11 +2,12 @@ package retry
 
 import (
 	"context"
+	"testing"
+
 	"github.com/stretchr/testify/assert"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
-	"testing"
 )
 
 func TestDo(t *testing.T) {
@@ -16,10 +17,8 @@ func TestDo(t *testing.T) {
 		err := Do(context.Background(), func(ctx context.Context, opts ...grpc.CallOption) error {
 			count++
 			return status.Error(codes.ResourceExhausted, "ResourceExhausted")
-
 		}, WithMax(i))
 		assert.Error(t, err)
 		assert.Equal(t, i+1, count)
 	}
-
 }