goext/exerr/meta.go

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package exerr
import (
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"github.com/rs/zerolog"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/primitive"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"math"
"strconv"
"strings"
"time"
)
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// This is a buffed up map[string]any
// we also save type information of the map-values
// which allows us to deserialize them back into te correct types later
type MetaMap map[string]MetaValue
type metaDataType string
const (
MDTString metaDataType = "String"
MDTStringPtr metaDataType = "StringPtr"
MDTInt metaDataType = "Int"
MDTInt8 metaDataType = "Int8"
MDTInt16 metaDataType = "Int16"
MDTInt32 metaDataType = "Int32"
MDTInt64 metaDataType = "Int64"
MDTFloat32 metaDataType = "Float32"
MDTFloat64 metaDataType = "Float64"
MDTBool metaDataType = "Bool"
MDTBytes metaDataType = "Bytes"
MDTObjectID metaDataType = "ObjectID"
MDTTime metaDataType = "Time"
MDTDuration metaDataType = "Duration"
MDTStringArray metaDataType = "StringArr"
MDTIntArray metaDataType = "IntArr"
MDTInt32Array metaDataType = "Int32Arr"
MDTID metaDataType = "ID"
MDTAny metaDataType = "Interface"
MDTNil metaDataType = "Nil"
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MDTEnum metaDataType = "Enum"
)
type MetaValue struct {
DataType metaDataType `json:"dataType"`
Value interface{} `json:"value"`
}
type metaValueSerialization struct {
DataType metaDataType `bson:"dataType"`
Value string `bson:"value"`
Raw interface{} `bson:"raw"`
}
func (v MetaValue) SerializeValue() (string, error) {
switch v.DataType {
case MDTString:
return v.Value.(string), nil
case MDTID:
return v.Value.(IDWrap).Serialize(), nil
case MDTAny:
return v.Value.(AnyWrap).Serialize(), nil
case MDTStringPtr:
if langext.IsNil(v.Value) {
return "#", nil
}
r := v.Value.(*string)
if r != nil {
return "*" + *r, nil
} else {
return "#", nil
}
case MDTInt:
return strconv.Itoa(v.Value.(int)), nil
case MDTInt8:
return strconv.FormatInt(int64(v.Value.(int8)), 10), nil
case MDTInt16:
return strconv.FormatInt(int64(v.Value.(int16)), 10), nil
case MDTInt32:
return strconv.FormatInt(int64(v.Value.(int32)), 10), nil
case MDTInt64:
return strconv.FormatInt(v.Value.(int64), 10), nil
case MDTFloat32:
return strconv.FormatFloat(float64(v.Value.(float32)), 'X', -1, 32), nil
case MDTFloat64:
return strconv.FormatFloat(v.Value.(float64), 'X', -1, 64), nil
case MDTBool:
if v.Value.(bool) {
return "true", nil
} else {
return "false", nil
}
case MDTBytes:
return hex.EncodeToString(v.Value.([]byte)), nil
case MDTObjectID:
return v.Value.(primitive.ObjectID).Hex(), nil
case MDTTime:
return strconv.FormatInt(v.Value.(time.Time).Unix(), 10) + "|" + strconv.FormatInt(int64(v.Value.(time.Time).Nanosecond()), 10), nil
case MDTDuration:
return v.Value.(time.Duration).String(), nil
case MDTStringArray:
if langext.IsNil(v.Value) {
return "#", nil
}
r, err := json.Marshal(v.Value.([]string))
if err != nil {
return "", err
}
return string(r), nil
case MDTIntArray:
if langext.IsNil(v.Value) {
return "#", nil
}
r, err := json.Marshal(v.Value.([]int))
if err != nil {
return "", err
}
return string(r), nil
case MDTInt32Array:
if langext.IsNil(v.Value) {
return "#", nil
}
r, err := json.Marshal(v.Value.([]int32))
if err != nil {
return "", err
}
return string(r), nil
case MDTNil:
return "", nil
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case MDTEnum:
return v.Value.(EnumWrap).Serialize(), nil
}
return "", errors.New("Unknown type: " + string(v.DataType))
}
func (v MetaValue) ShortString(lim int) string {
switch v.DataType {
case MDTString:
r := strings.ReplaceAll(v.Value.(string), "\r", "")
r = strings.ReplaceAll(r, "\n", "\\n")
r = strings.ReplaceAll(r, "\t", "\\t")
return langext.StrLimit(r, lim, "...")
case MDTID:
return v.Value.(IDWrap).String()
case MDTAny:
return v.Value.(AnyWrap).String()
case MDTStringPtr:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r := langext.CoalesceString(v.Value.(*string), "<<null>>")
r = strings.ReplaceAll(r, "\r", "")
r = strings.ReplaceAll(r, "\n", "\\n")
r = strings.ReplaceAll(r, "\t", "\\t")
return langext.StrLimit(r, lim, "...")
case MDTInt:
return strconv.Itoa(v.Value.(int))
case MDTInt8:
return strconv.FormatInt(int64(v.Value.(int8)), 10)
case MDTInt16:
return strconv.FormatInt(int64(v.Value.(int16)), 10)
case MDTInt32:
return strconv.FormatInt(int64(v.Value.(int32)), 10)
case MDTInt64:
return strconv.FormatInt(v.Value.(int64), 10)
case MDTFloat32:
return strconv.FormatFloat(float64(v.Value.(float32)), 'g', 4, 32)
case MDTFloat64:
return strconv.FormatFloat(v.Value.(float64), 'g', 4, 64)
case MDTBool:
return fmt.Sprintf("%v", v.Value.(bool))
case MDTBytes:
return langext.StrLimit(hex.EncodeToString(v.Value.([]byte)), lim, "...")
case MDTObjectID:
return v.Value.(primitive.ObjectID).Hex()
case MDTTime:
return v.Value.(time.Time).Format(time.RFC3339)
case MDTDuration:
return v.Value.(time.Duration).String()
case MDTStringArray:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r, err := json.Marshal(v.Value.([]string))
if err != nil {
return "(err)"
}
return langext.StrLimit(string(r), lim, "...")
case MDTIntArray:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r, err := json.Marshal(v.Value.([]int))
if err != nil {
return "(err)"
}
return langext.StrLimit(string(r), lim, "...")
case MDTInt32Array:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r, err := json.Marshal(v.Value.([]int32))
if err != nil {
return "(err)"
}
return langext.StrLimit(string(r), lim, "...")
case MDTNil:
return "<<null>>"
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case MDTEnum:
return v.Value.(EnumWrap).String()
}
return "(err)"
}
func (v MetaValue) Apply(key string, evt *zerolog.Event, limitLen *int) *zerolog.Event {
switch v.DataType {
case MDTString:
if limitLen == nil {
return evt.Str(key, v.Value.(string))
} else {
return evt.Str(key, langext.StrLimit(v.Value.(string), *limitLen, "..."))
}
case MDTID:
return evt.Str(key, v.Value.(IDWrap).Value)
case MDTAny:
if v.Value.(AnyWrap).IsError {
return evt.Str(key, "(err)")
} else {
if limitLen == nil {
return evt.Str(key, v.Value.(AnyWrap).Json)
} else {
return evt.Str(key, langext.StrLimit(v.Value.(AnyWrap).Json, *limitLen, "..."))
}
}
case MDTStringPtr:
if langext.IsNil(v.Value) {
return evt.Str(key, "<<null>>")
}
if limitLen == nil {
return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<null>>"))
} else {
return evt.Str(key, langext.StrLimit(langext.CoalesceString(v.Value.(*string), "<<null>>"), *limitLen, "..."))
}
case MDTInt:
return evt.Int(key, v.Value.(int))
case MDTInt8:
return evt.Int8(key, v.Value.(int8))
case MDTInt16:
return evt.Int16(key, v.Value.(int16))
case MDTInt32:
return evt.Int32(key, v.Value.(int32))
case MDTInt64:
return evt.Int64(key, v.Value.(int64))
case MDTFloat32:
return evt.Float32(key, v.Value.(float32))
case MDTFloat64:
return evt.Float64(key, v.Value.(float64))
case MDTBool:
return evt.Bool(key, v.Value.(bool))
case MDTBytes:
return evt.Bytes(key, v.Value.([]byte))
case MDTObjectID:
return evt.Str(key, v.Value.(primitive.ObjectID).Hex())
case MDTTime:
return evt.Time(key, v.Value.(time.Time))
case MDTDuration:
return evt.Dur(key, v.Value.(time.Duration))
case MDTStringArray:
if langext.IsNil(v.Value) {
return evt.Strs(key, nil)
}
return evt.Strs(key, v.Value.([]string))
case MDTIntArray:
if langext.IsNil(v.Value) {
return evt.Ints(key, nil)
}
return evt.Ints(key, v.Value.([]int))
case MDTInt32Array:
if langext.IsNil(v.Value) {
return evt.Ints32(key, nil)
}
return evt.Ints32(key, v.Value.([]int32))
case MDTNil:
return evt.Str(key, "<<null>>")
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case MDTEnum:
if v.Value.(EnumWrap).IsNil {
return evt.Any(key, nil)
} else if v.Value.(EnumWrap).ValueRaw != nil {
return evt.Any(key, v.Value.(EnumWrap).ValueRaw)
} else {
return evt.Str(key, v.Value.(EnumWrap).ValueString)
}
}
return evt.Str(key, "(err)")
}
func (v MetaValue) MarshalJSON() ([]byte, error) {
str, err := v.SerializeValue()
if err != nil {
return nil, err
}
return json.Marshal(string(v.DataType) + ":" + str)
}
func (v *MetaValue) UnmarshalJSON(data []byte) error {
var str = ""
err := json.Unmarshal(data, &str)
if err != nil {
return err
}
split := strings.SplitN(str, ":", 2)
if len(split) != 2 {
return errors.New("failed to decode MetaValue: '" + str + "'")
}
return v.Deserialize(split[1], metaDataType(split[0]))
}
func (v MetaValue) MarshalBSON() ([]byte, error) {
serval, err := v.SerializeValue()
if err != nil {
return nil, Wrap(err, "failed to bson-marshal MetaValue (serialize)").Build()
}
// this is an kinda ugly hack - but serialization to mongodb and back can loose the correct type information....
bin, err := bson.Marshal(metaValueSerialization{
DataType: v.DataType,
Value: serval,
Raw: v.Value,
})
if err != nil {
return nil, Wrap(err, "failed to bson-marshal MetaValue (marshal)").Build()
}
return bin, nil
}
func (v *MetaValue) UnmarshalBSON(bytes []byte) error {
var serval metaValueSerialization
err := bson.Unmarshal(bytes, &serval)
if err != nil {
return Wrap(err, "failed to bson-unmarshal MetaValue (unmarshal)").Build()
}
err = v.Deserialize(serval.Value, serval.DataType)
if err != nil {
return Wrap(err, "failed to deserialize MetaValue from bson").Str("raw", serval.Value).Build()
}
return nil
}
func (v *MetaValue) Deserialize(value string, datatype metaDataType) error {
switch datatype {
case MDTString:
v.Value = value
v.DataType = datatype
return nil
case MDTID:
v.Value = deserializeIDWrap(value)
v.DataType = datatype
return nil
case MDTAny:
v.Value = deserializeAnyWrap(value)
v.DataType = datatype
return nil
case MDTStringPtr:
if len(value) <= 0 || (value[0] != '*' && value[0] != '#') {
return errors.New("Invalid StringPtr: " + value)
} else if value == "#" {
v.Value = nil
v.DataType = datatype
return nil
} else {
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v.Value = langext.Ptr(value[1:])
v.DataType = datatype
return nil
}
case MDTInt:
pv, err := strconv.ParseInt(value, 10, 0)
if err != nil {
return err
}
v.Value = int(pv)
v.DataType = datatype
return nil
case MDTInt8:
pv, err := strconv.ParseInt(value, 10, 8)
if err != nil {
return err
}
v.Value = int8(pv)
v.DataType = datatype
return nil
case MDTInt16:
pv, err := strconv.ParseInt(value, 10, 16)
if err != nil {
return err
}
v.Value = int16(pv)
v.DataType = datatype
return nil
case MDTInt32:
pv, err := strconv.ParseInt(value, 10, 32)
if err != nil {
return err
}
v.Value = int32(pv)
v.DataType = datatype
return nil
case MDTInt64:
pv, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return err
}
v.Value = pv
v.DataType = datatype
return nil
case MDTFloat32:
pv, err := strconv.ParseFloat(value, 64)
if err != nil {
return err
}
v.Value = float32(pv)
v.DataType = datatype
return nil
case MDTFloat64:
pv, err := strconv.ParseFloat(value, 64)
if err != nil {
return err
}
v.Value = pv
v.DataType = datatype
return nil
case MDTBool:
if value == "true" {
v.Value = true
v.DataType = datatype
return nil
}
if value == "false" {
v.Value = false
v.DataType = datatype
return nil
}
return errors.New("invalid bool value: " + value)
case MDTBytes:
r, err := hex.DecodeString(value)
if err != nil {
return err
}
v.Value = r
v.DataType = datatype
return nil
case MDTObjectID:
r, err := primitive.ObjectIDFromHex(value)
if err != nil {
return err
}
v.Value = r
v.DataType = datatype
return nil
case MDTTime:
ps := strings.Split(value, "|")
if len(ps) != 2 {
return errors.New("invalid time.time: " + value)
}
p1, err := strconv.ParseInt(ps[0], 10, 64)
if err != nil {
return err
}
p2, err := strconv.ParseInt(ps[1], 10, 32)
if err != nil {
return err
}
v.Value = time.Unix(p1, p2)
v.DataType = datatype
return nil
case MDTDuration:
r, err := time.ParseDuration(value)
if err != nil {
return err
}
v.Value = r
v.DataType = datatype
return nil
case MDTStringArray:
if value == "#" {
v.Value = nil
v.DataType = datatype
return nil
}
pj := make([]string, 0)
err := json.Unmarshal([]byte(value), &pj)
if err != nil {
return err
}
v.Value = pj
v.DataType = datatype
return nil
case MDTIntArray:
if value == "#" {
v.Value = nil
v.DataType = datatype
return nil
}
pj := make([]int, 0)
err := json.Unmarshal([]byte(value), &pj)
if err != nil {
return err
}
v.Value = pj
v.DataType = datatype
return nil
case MDTInt32Array:
if value == "#" {
v.Value = nil
v.DataType = datatype
return nil
}
pj := make([]int32, 0)
err := json.Unmarshal([]byte(value), &pj)
if err != nil {
return err
}
v.Value = pj
v.DataType = datatype
return nil
case MDTNil:
v.Value = nil
v.DataType = datatype
return nil
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case MDTEnum:
v.Value = deserializeEnumWrap(value)
v.DataType = datatype
return nil
}
return errors.New("Unknown type: " + string(datatype))
}
func (v MetaValue) ValueString() string {
switch v.DataType {
case MDTString:
return v.Value.(string)
case MDTID:
return v.Value.(IDWrap).String()
case MDTAny:
return v.Value.(AnyWrap).String()
case MDTStringPtr:
if langext.IsNil(v.Value) {
return "<<null>>"
}
return langext.CoalesceString(v.Value.(*string), "<<null>>")
case MDTInt:
return strconv.Itoa(v.Value.(int))
case MDTInt8:
return strconv.FormatInt(int64(v.Value.(int8)), 10)
case MDTInt16:
return strconv.FormatInt(int64(v.Value.(int16)), 10)
case MDTInt32:
return strconv.FormatInt(int64(v.Value.(int32)), 10)
case MDTInt64:
return strconv.FormatInt(v.Value.(int64), 10)
case MDTFloat32:
return strconv.FormatFloat(float64(v.Value.(float32)), 'g', 4, 32)
case MDTFloat64:
return strconv.FormatFloat(v.Value.(float64), 'g', 4, 64)
case MDTBool:
return fmt.Sprintf("%v", v.Value.(bool))
case MDTBytes:
return hex.EncodeToString(v.Value.([]byte))
case MDTObjectID:
return v.Value.(primitive.ObjectID).Hex()
case MDTTime:
return v.Value.(time.Time).Format(time.RFC3339Nano)
case MDTDuration:
return v.Value.(time.Duration).String()
case MDTStringArray:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r, err := json.MarshalIndent(v.Value.([]string), "", " ")
if err != nil {
return "(err)"
}
return string(r)
case MDTIntArray:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r, err := json.MarshalIndent(v.Value.([]int), "", " ")
if err != nil {
return "(err)"
}
return string(r)
case MDTInt32Array:
if langext.IsNil(v.Value) {
return "<<null>>"
}
r, err := json.MarshalIndent(v.Value.([]int32), "", " ")
if err != nil {
return "(err)"
}
return string(r)
case MDTNil:
return "<<null>>"
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case MDTEnum:
return v.Value.(EnumWrap).String()
}
return "(err)"
}
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// rawValueForJson returns most-of-the-time the `Value` field
// but for some datatyes we do special processing
// all, so we can pluck the output value in json.Marshal without any suprises
func (v MetaValue) rawValueForJson() any {
if v.DataType == MDTAny {
if v.Value.(AnyWrap).IsNil {
return nil
}
if v.Value.(AnyWrap).IsError {
return bson.M{"@error": true}
}
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jsonobj := primitive.M{}
jsonarr := primitive.A{}
if err := json.Unmarshal([]byte(v.Value.(AnyWrap).Json), &jsonobj); err == nil {
return jsonobj
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} else if err := json.Unmarshal([]byte(v.Value.(AnyWrap).Json), &jsonarr); err == nil {
return jsonarr
} else {
return bson.M{"type": v.Value.(AnyWrap).Type, "data": v.Value.(AnyWrap).Json}
}
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}
if v.DataType == MDTID {
if v.Value.(IDWrap).IsNil {
return nil
}
return v.Value.(IDWrap).Value
}
if v.DataType == MDTBytes {
return hex.EncodeToString(v.Value.([]byte))
}
if v.DataType == MDTDuration {
return v.Value.(time.Duration).String()
}
if v.DataType == MDTTime {
return v.Value.(time.Time).Format(time.RFC3339Nano)
}
if v.DataType == MDTObjectID {
return v.Value.(primitive.ObjectID).Hex()
}
if v.DataType == MDTNil {
return nil
}
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if v.DataType == MDTEnum {
if v.Value.(EnumWrap).IsNil {
return nil
}
if v.Value.(EnumWrap).ValueRaw != nil {
return v.Value.(EnumWrap).ValueRaw
}
return v.Value.(EnumWrap).ValueString
}
if v.DataType == MDTFloat32 {
if math.IsNaN(float64(v.Value.(float32))) {
return "float64::NaN"
} else if math.IsInf(float64(v.Value.(float32)), +1) {
return "float64::+inf"
} else if math.IsInf(float64(v.Value.(float32)), -1) {
return "float64::-inf"
} else {
return v.Value
}
}
if v.DataType == MDTFloat64 {
if math.IsNaN(v.Value.(float64)) {
return "float64::NaN"
} else if math.IsInf(v.Value.(float64), +1) {
return "float64::+inf"
} else if math.IsInf(v.Value.(float64), -1) {
return "float64::-inf"
} else {
return v.Value
}
}
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return v.Value
}
func (mm MetaMap) FormatOneLine(singleMaxLen int) string {
r := ""
i := 0
for key, val := range mm {
if i > 0 {
r += ", "
}
r += "\"" + key + "\""
r += ": "
r += "\"" + val.ShortString(singleMaxLen) + "\""
i++
}
return r
}
func (mm MetaMap) FormatMultiLine(indentFront string, indentKeys string, maxLenValue int) string {
r := ""
r += indentFront + "{" + "\n"
for key, val := range mm {
if key == "gin.body" {
continue
}
r += indentFront
r += indentKeys
r += "\"" + key + "\""
r += ": "
r += "\"" + val.ShortString(maxLenValue) + "\""
r += ",\n"
}
r += indentFront + "}"
return r
}
func (mm MetaMap) Any() bool {
return len(mm) > 0
}
func (mm MetaMap) Apply(evt *zerolog.Event, limitLen *int) *zerolog.Event {
for key, val := range mm {
evt = val.Apply(key, evt, limitLen)
}
return evt
}
func (mm MetaMap) add(key string, mdtype metaDataType, val interface{}) {
if _, ok := mm[key]; !ok {
mm[key] = MetaValue{DataType: mdtype, Value: val}
return
}
for i := 2; ; i++ {
realkey := key + "-" + strconv.Itoa(i)
if _, ok := mm[realkey]; !ok {
mm[realkey] = MetaValue{DataType: mdtype, Value: val}
return
}
}
}