332 lines
8.1 KiB
Go
332 lines
8.1 KiB
Go
package util
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/url"
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"reflect"
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"strconv"
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"strings"
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"time"
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)
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// change instance=["a", "b"]
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// to instance.1="a" instance.2="b"
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func FlattenFn(fieldName string, field reflect.Value, values *url.Values) {
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l := field.Len()
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if l > 0 {
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for i := 0; i < l; i++ {
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str := field.Index(i).String()
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values.Set(fieldName+"."+strconv.Itoa(i+1), str)
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}
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}
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}
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func Underline2Dot(name string) string {
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return strings.Replace(name, "_", ".", -1)
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}
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//ConvertToQueryValues converts the struct to url.Values
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func ConvertToQueryValues(ifc interface{}) url.Values {
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values := url.Values{}
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SetQueryValues(ifc, &values)
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return values
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}
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//SetQueryValues sets the struct to existing url.Values following ECS encoding rules
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func SetQueryValues(ifc interface{}, values *url.Values) {
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setQueryValues(ifc, values, "")
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}
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func SetQueryValueByFlattenMethod(ifc interface{}, values *url.Values) {
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setQueryValuesByFlattenMethod(ifc, values, "")
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}
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func setQueryValues(i interface{}, values *url.Values, prefix string) {
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// add to support url.Values
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mapValues, ok := i.(url.Values)
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if ok {
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for k, _ := range mapValues {
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values.Set(k, mapValues.Get(k))
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}
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return
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}
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elem := reflect.ValueOf(i)
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if elem.Kind() == reflect.Ptr {
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elem = elem.Elem()
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}
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elemType := elem.Type()
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for i := 0; i < elem.NumField(); i++ {
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fieldName := elemType.Field(i).Name
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anonymous := elemType.Field(i).Anonymous
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tag := elemType.Field(i).Tag.Get("query")
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argName := elemType.Field(i).Tag.Get("ArgName")
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field := elem.Field(i)
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// TODO Use Tag for validation
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// tag := typ.Field(i).Tag.Get("tagname")
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kind := field.Kind()
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isPtr := false
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if (kind == reflect.Ptr || kind == reflect.Array || kind == reflect.Slice || kind == reflect.Map || kind == reflect.Chan) && field.IsNil() {
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continue
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}
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if kind == reflect.Ptr {
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field = field.Elem()
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kind = field.Kind()
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isPtr = true
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}
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var value string
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//switch field.Interface().(type) {
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switch kind {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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i := field.Int()
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if i != 0 || isPtr {
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value = strconv.FormatInt(i, 10)
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}
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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i := field.Uint()
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if i != 0 || isPtr {
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value = strconv.FormatUint(i, 10)
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}
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case reflect.Float32:
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value = strconv.FormatFloat(field.Float(), 'f', 4, 32)
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case reflect.Float64:
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value = strconv.FormatFloat(field.Float(), 'f', 4, 64)
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case reflect.Bool:
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value = strconv.FormatBool(field.Bool())
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case reflect.String:
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value = field.String()
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case reflect.Map:
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ifc := field.Interface()
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m := ifc.(map[string]string)
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if m != nil {
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j := 0
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for k, v := range m {
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j++
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keyName := fmt.Sprintf("%s.%d.Key", fieldName, j)
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values.Set(keyName, k)
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valueName := fmt.Sprintf("%s.%d.Value", fieldName, j)
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values.Set(valueName, v)
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}
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}
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case reflect.Slice:
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switch field.Type().Elem().Kind() {
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case reflect.Uint8:
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value = string(field.Bytes())
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case reflect.String:
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l := field.Len()
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if l > 0 {
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if tag == "list" {
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name := argName
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if argName == "" {
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name = fieldName
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}
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for i := 0; i < l; i++ {
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valueName := fmt.Sprintf("%s.%d", name, (i + 1))
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values.Set(valueName, field.Index(i).String())
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}
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} else {
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strArray := make([]string, l)
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for i := 0; i < l; i++ {
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strArray[i] = field.Index(i).String()
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}
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bytes, err := json.Marshal(strArray)
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if err == nil {
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value = string(bytes)
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} else {
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log.Printf("Failed to convert JSON: %v", err)
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}
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}
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}
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default:
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l := field.Len()
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for j := 0; j < l; j++ {
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prefixName := fmt.Sprintf("%s.%d.", fieldName, (j + 1))
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ifc := field.Index(j).Interface()
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//log.Printf("%s : %v", prefixName, ifc)
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if ifc != nil {
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setQueryValues(ifc, values, prefixName)
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}
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}
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continue
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}
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default:
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switch field.Interface().(type) {
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case ISO6801Time:
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t := field.Interface().(ISO6801Time)
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value = t.String()
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case time.Time:
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t := field.Interface().(time.Time)
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value = GetISO8601TimeStamp(t)
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default:
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ifc := field.Interface()
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if ifc != nil {
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if anonymous {
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SetQueryValues(ifc, values)
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} else {
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prefixName := fieldName + "."
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setQueryValues(ifc, values, prefixName)
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}
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continue
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}
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}
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}
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if value != "" {
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name := argName
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if argName == "" {
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name = fieldName
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}
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if prefix != "" {
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name = prefix + name
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}
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values.Set(name, value)
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}
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}
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}
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func setQueryValuesByFlattenMethod(i interface{}, values *url.Values, prefix string) {
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// add to support url.Values
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mapValues, ok := i.(url.Values)
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if ok {
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for k, _ := range mapValues {
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values.Set(k, mapValues.Get(k))
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}
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return
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}
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elem := reflect.ValueOf(i)
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if elem.Kind() == reflect.Ptr {
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elem = elem.Elem()
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}
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elemType := elem.Type()
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for i := 0; i < elem.NumField(); i++ {
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fieldName := elemType.Field(i).Name
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anonymous := elemType.Field(i).Anonymous
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field := elem.Field(i)
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// TODO Use Tag for validation
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// tag := typ.Field(i).Tag.Get("tagname")
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kind := field.Kind()
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isPtr := false
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if (kind == reflect.Ptr || kind == reflect.Array || kind == reflect.Slice || kind == reflect.Map || kind == reflect.Chan) && field.IsNil() {
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continue
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}
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if kind == reflect.Ptr {
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field = field.Elem()
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kind = field.Kind()
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isPtr = true
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}
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var value string
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//switch field.Interface().(type) {
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switch kind {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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i := field.Int()
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if i != 0 || isPtr {
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value = strconv.FormatInt(i, 10)
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}
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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i := field.Uint()
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if i != 0 || isPtr {
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value = strconv.FormatUint(i, 10)
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}
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case reflect.Float32:
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value = strconv.FormatFloat(field.Float(), 'f', 4, 32)
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case reflect.Float64:
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value = strconv.FormatFloat(field.Float(), 'f', 4, 64)
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case reflect.Bool:
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value = strconv.FormatBool(field.Bool())
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case reflect.String:
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value = field.String()
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case reflect.Map:
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ifc := field.Interface()
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m := ifc.(map[string]string)
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if m != nil {
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j := 0
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for k, v := range m {
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j++
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keyName := fmt.Sprintf("%s.%d.Key", fieldName, j)
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values.Set(keyName, k)
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valueName := fmt.Sprintf("%s.%d.Value", fieldName, j)
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values.Set(valueName, v)
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}
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}
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case reflect.Slice:
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if field.Type().Name() == "FlattenArray" {
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FlattenFn(fieldName, field, values)
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} else {
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switch field.Type().Elem().Kind() {
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case reflect.Uint8:
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value = string(field.Bytes())
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case reflect.String:
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l := field.Len()
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if l > 0 {
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strArray := make([]string, l)
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for i := 0; i < l; i++ {
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strArray[i] = field.Index(i).String()
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}
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bytes, err := json.Marshal(strArray)
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if err == nil {
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value = string(bytes)
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} else {
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log.Printf("Failed to convert JSON: %v", err)
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}
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}
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default:
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l := field.Len()
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for j := 0; j < l; j++ {
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prefixName := fmt.Sprintf("%s.%d.", fieldName, (j + 1))
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ifc := field.Index(j).Interface()
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//log.Printf("%s : %v", prefixName, ifc)
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if ifc != nil {
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setQueryValuesByFlattenMethod(ifc, values, prefixName)
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}
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}
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continue
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}
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}
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default:
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switch field.Interface().(type) {
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case ISO6801Time:
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t := field.Interface().(ISO6801Time)
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value = t.String()
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case time.Time:
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t := field.Interface().(time.Time)
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value = GetISO8601TimeStamp(t)
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default:
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ifc := field.Interface()
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if ifc != nil {
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if anonymous {
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SetQueryValues(ifc, values)
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} else {
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prefixName := fieldName + "."
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setQueryValuesByFlattenMethod(ifc, values, prefixName)
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}
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continue
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}
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}
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}
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if value != "" {
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name := elemType.Field(i).Tag.Get("ArgName")
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if name == "" {
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name = fieldName
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}
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if prefix != "" {
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name = prefix + name
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}
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// NOTE: here we will change name to underline style when the type is UnderlineString
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if field.Type().Name() == "UnderlineString" {
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name = Underline2Dot(name)
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}
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values.Set(name, value)
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}
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}
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}
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