/
util.go
151 lines (130 loc) · 3.56 KB
/
util.go
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package imagex
import (
"encoding/json"
"fmt"
"net/url"
"reflect"
common "github.com/volcengine/volc-sdk-golang/base"
)
type queryMarshalFilter func(key string, value []string) (accept bool)
func skipEmptyValue() queryMarshalFilter {
return func(_ string, value []string) (accept bool) {
if len(value) == 0 {
return false
}
for _, item := range value {
if item == "" {
return false
}
}
return true
}
}
func marshalToQuery(model interface{}, filters ...queryMarshalFilter) (url.Values, error) {
ret := url.Values{}
if model == nil {
return ret, nil
}
modelType := reflect.TypeOf(model)
modelValue := reflect.ValueOf(model)
if modelValue.IsNil() {
return ret, nil
}
if modelType.Kind() == reflect.Ptr {
modelValue = modelValue.Elem()
modelType = modelValue.Type()
} else {
return ret, fmt.Errorf("not struct")
}
fieldCount := modelType.NumField()
for i := 0; i < fieldCount; i++ {
field := modelType.Field(i)
queryKey := field.Tag.Get("query")
if queryKey == "" {
continue
}
queryRawValue := modelValue.FieldByName(field.Name)
queryValues := make([]string, 0)
if field.Type.Kind() != reflect.Array && field.Type.Kind() != reflect.Slice {
value := resolveQueryValue(queryRawValue)
if value == nil {
continue
}
queryValues = append(queryValues, fmt.Sprintf("%v", value))
} else {
length := queryRawValue.Len()
for idx := 0; idx < length; idx++ {
value := resolveQueryValue(queryRawValue.Index(idx))
if value == nil {
continue
}
queryValues = append(queryValues, fmt.Sprintf("%v", value))
}
}
for _, fun := range filters {
if !fun(queryKey, queryValues) {
goto afterAddQuery
}
}
for _, t := range queryValues {
ret.Add(queryKey, t)
}
afterAddQuery:
}
return ret, nil
}
func resolveQueryValue(queryRawValue reflect.Value) interface{} {
if queryRawValue.Kind() == reflect.Ptr {
if queryRawValue.IsNil() {
return nil
}
decayedQueryRawValue := queryRawValue.Elem()
decayedReflectValue := decayedQueryRawValue.Interface()
return fmt.Sprintf("%v", decayedReflectValue)
} else {
queryReflectValue := queryRawValue.Interface()
return fmt.Sprintf("%v", queryReflectValue)
}
}
func marshalToJson(model interface{}) ([]byte, error) {
if model == nil {
return make([]byte, 0), nil
}
result, err := json.Marshal(model)
if err != nil {
return nil, fmt.Errorf("can not marshal model to json, %v", err)
}
return result, nil
}
func unmarshalInto(data []byte, result interface{}) error {
resp := new(common.CommonResponse)
if err := json.Unmarshal(data, resp); err != nil {
return fmt.Errorf("fail to unmarshal response, %v", err)
}
errObj := resp.ResponseMetadata.Error
if errObj != nil && errObj.CodeN != 0 {
return fmt.Errorf("request %s error %s", resp.ResponseMetadata.RequestId, errObj.Message)
}
if err := json.Unmarshal(data, result); err != nil {
return fmt.Errorf("fail to unmarshal result, %v", err)
}
return nil
}
func unmarshalResultInto(data []byte, result interface{}) error {
resp := new(common.CommonResponse)
if err := json.Unmarshal(data, resp); err != nil {
return fmt.Errorf("fail to unmarshal response, %v", err)
}
errObj := resp.ResponseMetadata.Error
if errObj != nil && errObj.CodeN != 0 {
return fmt.Errorf("request %s error %s", resp.ResponseMetadata.RequestId, errObj.Message)
}
data, err := json.Marshal(resp.Result)
if err != nil {
return fmt.Errorf("fail to marshal result, %v", err)
}
if err = json.Unmarshal(data, result); err != nil {
return fmt.Errorf("fail to unmarshal result, %v", err)
}
return nil
}