github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/controller/rsm/transformer_fix_meta.go (about)

     1  /*
     2  Copyright (C) 2022-2023 ApeCloud Co., Ltd
     3  
     4  This file is part of KubeBlocks project
     5  
     6  This program is free software: you can redistribute it and/or modify
     7  it under the terms of the GNU Affero General Public License as published by
     8  the Free Software Foundation, either version 3 of the License, or
     9  (at your option) any later version.
    10  
    11  This program is distributed in the hope that it will be useful
    12  but WITHOUT ANY WARRANTY; without even the implied warranty of
    13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14  GNU Affero General Public License for more details.
    15  
    16  You should have received a copy of the GNU Affero General Public License
    17  along with this program.  If not, see <http://www.gnu.org/licenses/>.
    18  */
    19  
    20  package rsm
    21  
    22  import (
    23  	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
    24  
    25  	"github.com/1aal/kubeblocks/pkg/controller/graph"
    26  	"github.com/1aal/kubeblocks/pkg/controller/model"
    27  )
    28  
    29  type FixMetaTransformer struct{}
    30  
    31  var _ graph.Transformer = &FixMetaTransformer{}
    32  
    33  func (t *FixMetaTransformer) Transform(ctx graph.TransformContext, dag *graph.DAG) error {
    34  	transCtx, _ := ctx.(*rsmTransformContext)
    35  	obj := transCtx.rsm
    36  	if model.IsObjectDeleting(obj) {
    37  		return nil
    38  	}
    39  
    40  	graphCli, _ := transCtx.Client.(model.GraphClient)
    41  	// The object is not being deleted, so if it does not have our finalizer,
    42  	// then lets add the finalizer and update the object. This is equivalent
    43  	// registering our finalizer.
    44  	finalizer := getFinalizer(obj)
    45  	if controllerutil.ContainsFinalizer(obj, finalizer) {
    46  		return nil
    47  	}
    48  	controllerutil.AddFinalizer(obj, finalizer)
    49  	graphCli.Update(dag, transCtx.rsmOrig, obj)
    50  
    51  	return graph.ErrPrematureStop
    52  }