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named.go
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named.go
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/**
* @license
* Copyright 2020 Dynatrace LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package settings
import (
"encoding/json"
"reflect"
"github.com/dynatrace-oss/terraform-provider-dynatrace/dynatrace/opt"
)
func unref(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Struct {
return v
}
if v.Kind() == reflect.Ptr {
return unref(v.Elem())
}
if v.Kind() == reflect.Interface {
return unref(v.Elem())
}
return reflect.Value{}
}
var stringType = reflect.ValueOf("").Type()
var stringPointerType = reflect.ValueOf(opt.NewString("")).Type()
var stringSliceType = reflect.ValueOf([]string{}).Type()
func Name(v any, id string) string {
res := name(v, id)
if IsValidUUID(res) && len(id) > 0 {
if IsValidUUID(id) {
return id
}
objId := ObjectID{ID: id}
if err := objId.Decode(); err == nil && len(objId.Key) > 0 {
return objId.Key
}
}
return res
}
func name(v any, id string) string {
rv := unref(reflect.ValueOf(v))
field := rv.FieldByName("Name")
if field.IsValid() && field.Type() == stringType {
return field.String()
}
if field.IsValid() && field.Type() == stringPointerType {
return field.Elem().String()
}
method := rv.Addr().MethodByName("Name")
if method.IsValid() && method.Type().NumIn() == 0 && method.Type().NumOut() == 1 && method.Type().Out(0) == stringType {
results := method.Call([]reflect.Value{})
return results[0].String()
}
field = rv.FieldByName("DisplayName")
if field.IsValid() && field.Type() == stringType {
return field.String()
}
if field.IsValid() && field.Type() == stringPointerType {
return field.Elem().String()
}
field = rv.FieldByName("Label")
if field.IsValid() && field.Type() == stringType {
return field.String()
}
if field.IsValid() && field.Type() == stringPointerType {
return field.Elem().String()
}
field = rv.FieldByName("Key")
if field.IsValid() && field.Type() == stringType {
return field.String()
}
if field.IsValid() && field.Type() == stringPointerType {
return field.Elem().String()
}
hasValueField := false
hasScopeField := false
hasSchemaIDField := false
valueField := rv.FieldByName("Value")
if valueField.IsValid() && valueField.Type() == stringType {
hasValueField = true
}
field = rv.FieldByName("Scope")
if field.IsValid() && field.Type() == stringType {
hasScopeField = true
}
field = rv.FieldByName("SchemaID")
if field.IsValid() && field.Type() == stringType {
hasSchemaIDField = true
}
if hasValueField && hasSchemaIDField && hasScopeField {
valueBytes := []byte(valueField.String())
m := map[string]any{}
if err := json.Unmarshal(valueBytes, &m); err == nil {
if mv, ok := m["name"]; ok {
if mvs, ok := mv.(string); ok {
return mvs
}
}
}
}
panic(rv.Type().PkgPath() + "." + rv.Type().Name() + " does neither have a property 'Name', 'DisplayName', 'Label' or 'Key' nor does it offer a method 'Name()'")
}