134 lines
2.9 KiB
Go
134 lines
2.9 KiB
Go
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package exerr
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import (
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"bringman.de/common/shared/langext"
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"encoding/json"
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"fmt"
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"github.com/rs/zerolog/log"
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"strings"
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)
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//
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// These are wrapper objects, because for some metadata-types we need to serialize a bit more complex data
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// (eg thy actual type for ID objects, or the json representation for any types)
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//
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type IDWrap struct {
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Type string
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Value string
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IsNil bool
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}
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func newIDWrap(val fmt.Stringer) IDWrap {
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t := fmt.Sprintf("%T", val)
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arr := strings.Split(t, ".")
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if len(arr) > 0 {
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t = arr[len(arr)-1]
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}
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if langext.IsNil(val) {
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return IDWrap{Type: t, Value: "", IsNil: true}
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}
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v := val.String()
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return IDWrap{Type: t, Value: v, IsNil: false}
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}
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func (w IDWrap) Serialize() string {
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if w.IsNil {
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return "!nil" + ":" + w.Type
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}
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return w.Type + ":" + w.Value
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}
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func (w IDWrap) String() string {
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if w.IsNil {
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return w.Type + "<<nil>>"
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}
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return w.Type + "(" + w.Value + ")"
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}
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func deserializeIDWrap(v string) IDWrap {
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r := strings.SplitN(v, ":", 2)
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if len(r) == 2 && r[0] == "!nil" {
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return IDWrap{Type: r[1], Value: v, IsNil: true}
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}
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if len(r) == 0 {
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return IDWrap{}
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} else if len(r) == 1 {
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return IDWrap{Type: "", Value: v, IsNil: false}
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} else {
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return IDWrap{Type: r[0], Value: r[1], IsNil: false}
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}
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}
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type AnyWrap struct {
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Type string
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Json string
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IsError bool
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IsNil bool
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}
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func newAnyWrap(val any) (result AnyWrap) {
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result = AnyWrap{Type: "", Json: "", IsError: true, IsNil: false} // ensure a return in case of recover()
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defer func() {
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if err := recover(); err != nil {
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// send error should never crash our program
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log.Error().Interface("err", err).Msg("Panic while trying to marshal anywrap ( bmerror.Interface )")
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}
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}()
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t := fmt.Sprintf("%T", val)
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if langext.IsNil(val) {
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return AnyWrap{Type: t, Json: "", IsError: false, IsNil: true}
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}
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j, err := json.Marshal(val)
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if err == nil {
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return AnyWrap{Type: t, Json: string(j), IsError: false, IsNil: false}
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} else {
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return AnyWrap{Type: t, Json: "", IsError: true, IsNil: false}
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}
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}
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func (w AnyWrap) Serialize() string {
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if w.IsError {
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return "ERR" + ":" + w.Type + ":" + w.Json
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} else if w.IsNil {
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return "NIL" + ":" + w.Type + ":" + w.Json
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} else {
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return "OK" + ":" + w.Type + ":" + w.Json
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}
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}
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func (w AnyWrap) String() string {
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if w.IsError {
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return "(error)"
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} else if w.IsNil {
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return "(nil)"
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} else {
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return w.Json
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}
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}
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func deserializeAnyWrap(v string) AnyWrap {
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r := strings.SplitN(v, ":", 3)
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if len(r) != 3 {
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return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
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} else {
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if r[0] == "OK" {
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return AnyWrap{IsError: false, Type: r[1], Json: r[2], IsNil: false}
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} else if r[0] == "ERR" {
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return AnyWrap{IsError: true, Type: r[1], Json: r[2], IsNil: false}
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} else if r[0] == "NIL" {
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return AnyWrap{IsError: false, Type: r[1], Json: "", IsNil: true}
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} else {
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return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
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}
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}
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}
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