github.com/kubevela/workflow@v0.6.0/pkg/cue/utils.go (about)

     1  /*
     2  Copyright 2022 The KubeVela Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package cue
    18  
    19  import (
    20  	"bytes"
    21  
    22  	"cuelang.org/go/pkg/encoding/json"
    23  	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
    24  	"k8s.io/apimachinery/pkg/runtime"
    25  
    26  	"github.com/kubevela/workflow/pkg/cue/model/value"
    27  )
    28  
    29  // int data can evaluate with number in CUE, so it's OK if we convert the original float type data to int
    30  func isIntegral(val float64) bool {
    31  	return val == float64(int(val))
    32  }
    33  
    34  // IntifyValues will make values to int.
    35  // JSON marshalling of user values will put integer into float,
    36  // we have to change it back so that CUE check will succeed.
    37  func IntifyValues(raw interface{}) interface{} {
    38  	switch v := raw.(type) {
    39  	case map[string]interface{}:
    40  		return intifyMap(v)
    41  	case []interface{}:
    42  		return intifyList(v)
    43  	case float64:
    44  		if isIntegral(v) {
    45  			return int(v)
    46  		}
    47  		return v
    48  	default:
    49  		return raw
    50  	}
    51  }
    52  
    53  func intifyList(l []interface{}) interface{} {
    54  	l2 := make([]interface{}, 0, len(l))
    55  	for _, v := range l {
    56  		l2 = append(l2, IntifyValues(v))
    57  	}
    58  	return l2
    59  }
    60  
    61  func intifyMap(m map[string]interface{}) interface{} {
    62  	m2 := make(map[string]interface{}, len(m))
    63  	for k, v := range m {
    64  		m2[k] = IntifyValues(v)
    65  	}
    66  	return m2
    67  }
    68  
    69  // FillUnstructuredObject fill runtime.Unstructured to *value.Value
    70  func FillUnstructuredObject(v *value.Value, obj runtime.Unstructured, paths ...string) error {
    71  	var buf bytes.Buffer
    72  	if err := unstructured.UnstructuredJSONScheme.Encode(obj, &buf); err != nil {
    73  		return v.FillObject(err.Error(), "err")
    74  	}
    75  	expr, err := json.Unmarshal(buf.Bytes())
    76  	if err != nil {
    77  		return v.FillObject(err.Error(), "err")
    78  	}
    79  	return v.FillObject(expr, paths...)
    80  }
    81  
    82  // SetUnstructuredObject set runtime.Unstructured to *value.Value
    83  func SetUnstructuredObject(v *value.Value, obj runtime.Unstructured, path string) error {
    84  	var buf bytes.Buffer
    85  	if err := unstructured.UnstructuredJSONScheme.Encode(obj, &buf); err != nil {
    86  		return v.FillObject(err.Error(), "err")
    87  	}
    88  	expr, err := json.Unmarshal(buf.Bytes())
    89  	if err != nil {
    90  		return v.FillObject(err.Error(), "err")
    91  	}
    92  	return v.SetObject(expr, path)
    93  }