github.com/erda-project/erda-infra@v1.0.9/providers/component-protocol/utils/cputil/obj.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cputil
    16  
    17  import (
    18  	"fmt"
    19  
    20  	jsi "github.com/json-iterator/go"
    21  
    22  	"github.com/erda-project/erda-infra/providers/component-protocol/cptype"
    23  )
    24  
    25  var json = jsi.ConfigFastest
    26  
    27  // ObjJSONTransfer transfer from src to dst using json.
    28  func ObjJSONTransfer(src interface{}, dst interface{}) error {
    29  	b, err := json.Marshal(src)
    30  	if err != nil {
    31  		return err
    32  	}
    33  	return json.Unmarshal(b, dst)
    34  }
    35  
    36  // MustObjJSONTransfer .
    37  func MustObjJSONTransfer(src interface{}, dst interface{}) interface{} {
    38  	err := ObjJSONTransfer(src, dst)
    39  	if err != nil {
    40  		panic(fmt.Errorf("err: %v, src: %+v, dst: %+v", err, src, dst))
    41  	}
    42  	return dst
    43  }
    44  
    45  // MustConvertProps .
    46  func MustConvertProps(props interface{}) cptype.ComponentProps {
    47  	return *MustObjJSONTransfer(props, &cptype.ComponentProps{}).(*cptype.ComponentProps)
    48  }
    49  
    50  const (
    51  	mapKeyMeta = "meta"
    52  )
    53  
    54  // MustFlatMapMeta .
    55  func MustFlatMapMeta(input interface{}, removeMetaAfterFlat bool) {
    56  	switch in := input.(type) {
    57  	case map[string]interface{}:
    58  		m := &in
    59  		flatMapMeta(m, removeMetaAfterFlat)
    60  	case *map[string]interface{}:
    61  		m := in
    62  		flatMapMeta(m, removeMetaAfterFlat)
    63  	case []interface{}:
    64  		for _, v := range in {
    65  			v := v
    66  			MustFlatMapMeta(v, removeMetaAfterFlat)
    67  		}
    68  	default:
    69  		return
    70  	}
    71  }
    72  
    73  func flatMapMeta(m *map[string]interface{}, removeMetaAfterFlat bool) {
    74  	for k, v := range *m {
    75  		v := v
    76  		if k != mapKeyMeta {
    77  			MustFlatMapMeta(v, removeMetaAfterFlat)
    78  			(*m)[k] = v
    79  			continue
    80  		}
    81  		// meta
    82  		metaMap, ok := v.(map[string]interface{})
    83  		if !ok {
    84  			(*m)[k] = v
    85  			continue
    86  		}
    87  		// flat map
    88  		for k, v := range metaMap {
    89  			v := v
    90  			MustFlatMapMeta(v, removeMetaAfterFlat)
    91  			(*m)[k] = v
    92  		}
    93  		if removeMetaAfterFlat {
    94  			delete(*m, mapKeyMeta)
    95  		}
    96  	}
    97  }