github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/unstructured/config_object.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 unstructured
    21  
    22  import (
    23  	"fmt"
    24  	"sync"
    25  
    26  	appsv1alpha1 "github.com/1aal/kubeblocks/apis/apps/v1alpha1"
    27  )
    28  
    29  type ConfigObjectCreator = func(name string) ConfigObject
    30  
    31  type ConfigObjectRegistry struct {
    32  	objectCreator map[appsv1alpha1.CfgFileFormat]ConfigObjectCreator
    33  }
    34  
    35  var (
    36  	ConfigRegistryOnce   sync.Once
    37  	configObjectRegistry *ConfigObjectRegistry
    38  )
    39  
    40  func CfgObjectRegistry() *ConfigObjectRegistry {
    41  	ConfigRegistryOnce.Do(func() {
    42  		configObjectRegistry = &ConfigObjectRegistry{objectCreator: make(map[appsv1alpha1.CfgFileFormat]ConfigObjectCreator)}
    43  	})
    44  	return configObjectRegistry
    45  }
    46  
    47  func (c *ConfigObjectRegistry) RegisterConfigCreator(format appsv1alpha1.CfgFileFormat, creator ConfigObjectCreator) {
    48  	c.objectCreator[format] = creator
    49  }
    50  
    51  func (c *ConfigObjectRegistry) GetConfigObject(name string, format appsv1alpha1.CfgFileFormat) (ConfigObject, error) {
    52  	creator, ok := c.objectCreator[format]
    53  	if !ok {
    54  		return nil, fmt.Errorf("not supported type[%s]", format)
    55  	}
    56  	return creator(name), nil
    57  }
    58  
    59  func LoadConfig(name string, content string, format appsv1alpha1.CfgFileFormat) (ConfigObject, error) {
    60  	configObject, err := CfgObjectRegistry().GetConfigObject(name, format)
    61  	if err != nil {
    62  		return nil, err
    63  	}
    64  	if err := configObject.Unmarshal(content); err != nil {
    65  		return nil, err
    66  	}
    67  	return configObject, nil
    68  }