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Refactor reflect and some util code to own pkg
Signed-off-by: Shawn Wang <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,183 @@ | ||
| package metadata | ||
|
|
||
| import ( | ||
| "log" | ||
| "reflect" | ||
|
|
||
| "github.com/vmware/terraform-provider-nsxt/nsxt/util" | ||
|
|
||
| "github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema" | ||
| ) | ||
|
|
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| type Metadata struct { | ||
| // we need a separate schema type, in addition to terraform SDK type, | ||
| // in order to distinguish between single subclause and a list of entries | ||
| SchemaType string | ||
| ReadOnly bool | ||
| SdkFieldName string | ||
| // This attribute is parent path for the object | ||
| IsParentPath bool | ||
| IntroducedInVersion string | ||
| // skip handling of this attribute - it will be done manually | ||
| Skip bool | ||
| ReflectType reflect.Type | ||
| TestData Testdata | ||
| } | ||
|
|
||
| type ExtendedSchema struct { | ||
| Schema schema.Schema | ||
| Metadata Metadata | ||
| } | ||
|
|
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| type ExtendedResource struct { | ||
| Schema map[string]*ExtendedSchema | ||
| } | ||
|
|
||
| type Testdata struct { | ||
| CreateValue interface{} | ||
| UpdateValue interface{} | ||
| } | ||
|
|
||
| // GetExtendedSchema is a helper to convert terraform sdk schema to extended schema | ||
| func GetExtendedSchema(sch *schema.Schema) *ExtendedSchema { | ||
| shallowCopy := *sch | ||
| return &ExtendedSchema{ | ||
| Schema: shallowCopy, | ||
| Metadata: Metadata{ | ||
| Skip: true, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // GetSchemaFromExtendedSchema gets terraform sdk schema from extended schema definition | ||
| func GetSchemaFromExtendedSchema(ext map[string]*ExtendedSchema) map[string]*schema.Schema { | ||
| result := make(map[string]*schema.Schema) | ||
|
|
||
| for key, value := range ext { | ||
| log.Printf("[INFO] inspecting schema key %s, value %v", key, value) | ||
| shallowCopy := value.Schema | ||
| if (value.Schema.Type == schema.TypeList) || (value.Schema.Type == schema.TypeSet) { | ||
| elem, ok := shallowCopy.Elem.(*ExtendedSchema) | ||
| if ok { | ||
| shallowCopy.Elem = elem.Schema | ||
| } else { | ||
| elem, ok := shallowCopy.Elem.(*ExtendedResource) | ||
| if ok { | ||
| shallowCopy.Elem = &schema.Resource{ | ||
| Schema: GetSchemaFromExtendedSchema(elem.Schema), | ||
| } | ||
| } | ||
| } | ||
| } | ||
| // TODO: deepcopy needed? | ||
| result[key] = &shallowCopy | ||
| } | ||
|
|
||
| return result | ||
| } | ||
|
|
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| // StructToSchema converts NSX model struct to terraform schema | ||
| // currently supports nested subtype and trivial types | ||
| // TODO - support a list of structs | ||
| func StructToSchema(elem reflect.Value, d *schema.ResourceData, metadata map[string]*ExtendedSchema, parent string, parentMap map[string]interface{}) { | ||
| for key, item := range metadata { | ||
| if item.Metadata.Skip { | ||
| continue | ||
| } | ||
|
|
||
| log.Printf("[INFO] inspecting key %s", key) | ||
| if len(parent) > 0 { | ||
| log.Printf("[INFO] parent %s key %s", parent, key) | ||
| } | ||
| if item.Metadata.SchemaType == "struct" { | ||
| nestedObj := elem.FieldByName(item.Metadata.SdkFieldName) | ||
| nestedSchema := make(map[string]interface{}) | ||
| childElem := item.Schema.Elem.(*ExtendedResource) | ||
| StructToSchema(nestedObj.Elem(), d, childElem.Schema, key, nestedSchema) | ||
| log.Printf("[INFO] assigning struct %v to %s", nestedObj, key) | ||
| // TODO - get the schema from nested type if parent in present | ||
| var nestedSlice []map[string]interface{} | ||
| nestedSlice = append(nestedSlice, nestedSchema) | ||
| if len(parent) > 0 { | ||
| parentMap[key] = nestedSlice | ||
| } else { | ||
| d.Set(key, nestedSlice) | ||
| } | ||
| } else { | ||
| if len(parent) > 0 { | ||
| log.Printf("[INFO] assigning nested value %v to %s", elem.FieldByName(item.Metadata.SdkFieldName).Interface(), key) | ||
| parentMap[key] = elem.FieldByName(item.Metadata.SdkFieldName).Interface() | ||
| } else { | ||
| log.Printf("[INFO] assigning value %v to %s", elem.FieldByName(item.Metadata.SdkFieldName).Interface(), key) | ||
| d.Set(key, elem.FieldByName(item.Metadata.SdkFieldName).Interface()) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // SchemaToStruct converts terraform schema to NSX model struct | ||
| // currently supports nested subtype and trivial types | ||
| // TODO - support a list of structs | ||
| func SchemaToStruct(elem reflect.Value, d *schema.ResourceData, metadata map[string]*ExtendedSchema, parent string, parentMap map[string]interface{}) { | ||
| for key, item := range metadata { | ||
| if item.Metadata.ReadOnly || item.Metadata.Skip { | ||
| continue | ||
| } | ||
| if item.Metadata.IntroducedInVersion != "" && util.NsxVersionLower(item.Metadata.IntroducedInVersion) { | ||
| continue | ||
| } | ||
|
|
||
| log.Printf("[INFO] inspecting key %s", key) | ||
| if len(parent) > 0 { | ||
| log.Printf("[INFO] parent %s key %s", parent, key) | ||
| } | ||
| if item.Metadata.SchemaType == "string" { | ||
| var value string | ||
| if len(parent) > 0 { | ||
| value = parentMap[key].(string) | ||
| } else { | ||
| value = d.Get(key).(string) | ||
| } | ||
| log.Printf("[INFO] assigning string %v to %s", value, key) | ||
| elem.FieldByName(item.Metadata.SdkFieldName).Set(reflect.ValueOf(&value)) | ||
| } | ||
| if item.Metadata.SchemaType == "bool" { | ||
| var value bool | ||
| if len(parent) > 0 { | ||
| value = parentMap[key].(bool) | ||
| } else { | ||
| value = d.Get(key).(bool) | ||
| } | ||
| log.Printf("[INFO] assigning bool %v to %s", value, key) | ||
| elem.FieldByName(item.Metadata.SdkFieldName).Set(reflect.ValueOf(&value)) | ||
| } | ||
| if item.Metadata.SchemaType == "int" { | ||
| var value int64 | ||
| if len(parent) > 0 { | ||
| value = int64(parentMap[key].(int)) | ||
| } else { | ||
| value = int64(d.Get(key).(int)) | ||
| } | ||
| log.Printf("[INFO] assigning int %v to %s", value, key) | ||
| elem.FieldByName(item.Metadata.SdkFieldName).Set(reflect.ValueOf(&value)) | ||
| } | ||
| if item.Metadata.SchemaType == "struct" { | ||
| nestedObj := reflect.New(item.Metadata.ReflectType) | ||
| /* | ||
| // Helper for list of structs | ||
| slice := reflect.MakeSlice(reflect.TypeOf(nestedObj), 1, 1) | ||
| */ | ||
| nestedSchemaList := d.Get(key).([]interface{}) | ||
| if len(nestedSchemaList) == 0 { | ||
| continue | ||
| } | ||
| nestedSchema := nestedSchemaList[0].(map[string]interface{}) | ||
|
|
||
| childElem := item.Schema.Elem.(*ExtendedResource) | ||
| SchemaToStruct(nestedObj.Elem(), d, childElem.Schema, key, nestedSchema) | ||
| log.Printf("[INFO] assigning struct %v to %s", nestedObj, key) | ||
| elem.FieldByName(item.Metadata.SdkFieldName).Set(nestedObj) | ||
| // TODO - get the schema from nested type if parent in present | ||
| } | ||
| } | ||
| } |
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