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copy bmerr stuff from bm

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This commit is contained in:
Mike Schwörer 2023-02-08 18:45:31 +01:00
parent fd33b43f31
commit 17383894a7
Signed by: Mikescher
GPG Key ID: D3C7172E0A70F8CF
9 changed files with 1077 additions and 0 deletions
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1
exerr/builder.go Normal file
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package exerr

1
exerr/defaults.go Normal file
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package exerr

17
exerr/errinit.go Normal file
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package exerr
type ErrorPackageConfig struct {
LogTraces bool
RecursiveErrors bool
}
var pkgconfig = ErrorPackageConfig{
LogTraces: true,
}
// Init initializes the exerr packages
// Must be called at the program start, before (!) any errors
// Is not thread-safe
func Init(cfg ErrorPackageConfig) {
pkgconfig = cfg
}

32
exerr/exerr.go Normal file
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package exerr
import (
"time"
)
type ExErr struct {
UniqueID string `json:"uniqueID"`
Timestamp time.Time `json:"timestamp"`
Category ErrorCategory `json:"category"`
Severity ErrorSeverity `json:"severity"`
Type ErrorType `json:"type"`
Source ErrorSource `json:"source"`
Message string `json:"message"`
Caller string `json:"caller"`
Meta MetaMap `json:"meta"`
}
func (ee ExErr) Error() string {
}
func (ee ExErr) Unwrap() error {
}
func (ee ExErr) Is(err error) bool {
}

146
exerr/foreign.go Normal file
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package exerr
import (
"bringman.de/common/shared/langext"
"encoding/json"
"go.mongodb.org/mongo-driver/bson/primitive"
"reflect"
"time"
)
var reflectTypeStr = reflect.TypeOf("")
func getForeignMeta(err error) (mm MetaMap) {
mm = make(map[string]MetaValue)
defer func() {
if panicerr := recover(); panicerr != nil {
New(ErrPanic, "Panic while trying to get foreign meta").
Str("source", err.Error()).
Interface("panic-object", panicerr).
Stack().
Print()
}
}()
rval := reflect.ValueOf(err)
if rval.Kind() == reflect.Interface || rval.Kind() == reflect.Ptr {
rval = reflect.ValueOf(err).Elem()
}
mm.add("foreign.errortype", MDTString, rval.Type().String())
for k, v := range addMetaPrefix("foreign", getReflectedMetaValues(err, 8)) {
mm[k] = v
}
return mm
}
func getReflectedMetaValues(value interface{}, remainingDepth int) map[string]MetaValue {
if remainingDepth <= 0 {
return map[string]MetaValue{}
}
if langext.IsNil(value) {
return map[string]MetaValue{"": {DataType: MDTNil, Value: nil}}
}
rval := reflect.ValueOf(value)
if rval.Type().Kind() == reflect.Ptr {
if rval.IsNil() {
return map[string]MetaValue{"*": {DataType: MDTNil, Value: nil}}
}
elem := rval.Elem()
return addMetaPrefix("*", getReflectedMetaValues(elem.Interface(), remainingDepth-1))
}
if !rval.CanInterface() {
return map[string]MetaValue{"": {DataType: MDTString, Value: "<<no-interface>>"}}
}
raw := rval.Interface()
switch ifraw := raw.(type) {
case time.Time:
return map[string]MetaValue{"": {DataType: MDTTime, Value: ifraw}}
case time.Duration:
return map[string]MetaValue{"": {DataType: MDTDuration, Value: ifraw}}
case int:
return map[string]MetaValue{"": {DataType: MDTInt, Value: ifraw}}
case int8:
return map[string]MetaValue{"": {DataType: MDTInt8, Value: ifraw}}
case int16:
return map[string]MetaValue{"": {DataType: MDTInt16, Value: ifraw}}
case int32:
return map[string]MetaValue{"": {DataType: MDTInt32, Value: ifraw}}
case int64:
return map[string]MetaValue{"": {DataType: MDTInt64, Value: ifraw}}
case string:
return map[string]MetaValue{"": {DataType: MDTString, Value: ifraw}}
case bool:
return map[string]MetaValue{"": {DataType: MDTBool, Value: ifraw}}
case []byte:
return map[string]MetaValue{"": {DataType: MDTBytes, Value: ifraw}}
case float32:
return map[string]MetaValue{"": {DataType: MDTFloat32, Value: ifraw}}
case float64:
return map[string]MetaValue{"": {DataType: MDTFloat64, Value: ifraw}}
case []int:
return map[string]MetaValue{"": {DataType: MDTIntArray, Value: ifraw}}
case []int32:
return map[string]MetaValue{"": {DataType: MDTInt32Array, Value: ifraw}}
case primitive.ObjectID:
return map[string]MetaValue{"": {DataType: MDTObjectID, Value: ifraw}}
case []string:
return map[string]MetaValue{"": {DataType: MDTStringArray, Value: ifraw}}
}
if rval.Type().Kind() == reflect.Struct {
m := make(map[string]MetaValue)
for i := 0; i < rval.NumField(); i++ {
fieldtype := rval.Type().Field(i)
fieldname := fieldtype.Name
if fieldtype.IsExported() {
for k, v := range addMetaPrefix(fieldname, getReflectedMetaValues(rval.Field(i).Interface(), remainingDepth-1)) {
m[k] = v
}
}
}
return m
}
if rval.Type().ConvertibleTo(reflectTypeStr) {
return map[string]MetaValue{"": {DataType: MDTString, Value: rval.Convert(reflectTypeStr).String()}}
}
jsonval, err := json.Marshal(value)
if err != nil {
panic(err) // gets recovered later up
}
return map[string]MetaValue{"": {DataType: MDTString, Value: string(jsonval)}}
}
func addMetaPrefix(prefix string, m map[string]MetaValue) map[string]MetaValue {
if len(m) == 1 {
for k, v := range m {
if k == "" {
return map[string]MetaValue{prefix: v}
}
}
}
r := make(map[string]MetaValue, len(m))
for k, v := range m {
r[prefix+"."+k] = v
}
return r
}

35
exerr/listener.go Normal file
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package exerr
import "sync"
type Method string
const (
MethodOutput Method = "OUTPUT"
MethodPrint Method = "PRINT"
MethodBuild Method = "BUILD"
MethodFatal Method = "FATAL"
)
type Listener = func(method Method, v BMError)
var listenerLock = sync.Mutex{}
var listener = make([]Listener, 0)
func RegisterListener(l Listener) {
listenerLock.Lock()
defer listenerLock.Unlock()
listener = append(listener, l)
}
func (b *Builder) CallListener(m Method) {
valErr := b.toBMError()
listenerLock.Lock()
defer listenerLock.Unlock()
for _, v := range listener {
v(m, valErr)
}
}

698
exerr/meta.go Normal file
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package exerr
import (
"bringman.de/common/shared/langext"
spbmodels "bringman.de/proto/common/models"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/primitive"
"strconv"
"strings"
"time"
)
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"
)
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
}
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>>"
}
return "(err)"
}
func (v MetaValue) Apply(key string, evt *zerolog.Event) *zerolog.Event {
switch v.DataType {
case MDTString:
return evt.Str(key, v.Value.(string))
case MDTID:
return evt.Str(key, v.Value.(IDWrap).Value)
case MDTAny:
if v.Value.(AnyWrap).IsError {
return evt.Str(key, "(err)")
} else {
return evt.Str(key, v.Value.(AnyWrap).Json)
}
case MDTStringPtr:
if langext.IsNil(v.Value) {
return evt.Str(key, "<<null>>")
}
return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<null>>"))
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>>")
}
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 {
r, err := valueFromProto(value[1:], MDTString)
if err != nil {
return err
}
v.Value = langext.Ptr(r.Value.(string))
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
}
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>>"
}
return "(err)"
}
func valueFromProto(value string, datatype metaDataType) (MetaValue, error) {
obj := MetaValue{}
err := obj.Deserialize(value, datatype)
if err != nil {
return MetaValue{}, err
}
return obj, nil
}
func metaFromProto(proto []*spbmodels.CustomError_MetaValue) MetaMap {
r := make(MetaMap)
for _, v := range proto {
mval, err := valueFromProto(v.Value, metaDataType(v.Type))
if err != nil {
log.Warn().Err(err).Msg("metaFromProto failed for " + v.Key)
continue
}
r[v.Key] = mval
}
return r
}
func (mm MetaMap) ToProto() []*spbmodels.CustomError_MetaValue {
if mm == nil {
return make([]*spbmodels.CustomError_MetaValue, 0)
}
r := make([]*spbmodels.CustomError_MetaValue, 0, len(mm))
for k, v := range mm {
strval, err := v.SerializeValue()
if err != nil {
log.Warn().Err(err).Msg("MetaMap.ToProto failed for " + k)
continue
}
r = append(r, &spbmodels.CustomError_MetaValue{
Key: k,
Type: string(v.DataType),
Value: strval,
})
}
return r
}
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) *zerolog.Event {
for key, val := range mm {
evt = val.Apply(key, evt)
}
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
}
}
}

14
exerr/stacktrace.go Normal file
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@ -0,0 +1,14 @@
package exerr
import (
"fmt"
"runtime"
)
func callername(skip int) string {
pc := make([]uintptr, 15)
n := runtime.Callers(skip+2, pc)
frames := runtime.CallersFrames(pc[:n])
frame, _ := frames.Next()
return fmt.Sprintf("%s:%d %s", frame.File, frame.Line, frame.Function)
}

133
exerr/wrapper.go Normal file
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@ -0,0 +1,133 @@
package exerr
import (
"bringman.de/common/shared/langext"
"encoding/json"
"fmt"
"github.com/rs/zerolog/log"
"strings"
)
//
// These are wrapper objects, because for some metadata-types we need to serialize a bit more complex data
// (eg thy actual type for ID objects, or the json representation for any types)
//
type IDWrap struct {
Type string
Value string
IsNil bool
}
func newIDWrap(val fmt.Stringer) IDWrap {
t := fmt.Sprintf("%T", val)
arr := strings.Split(t, ".")
if len(arr) > 0 {
t = arr[len(arr)-1]
}
if langext.IsNil(val) {
return IDWrap{Type: t, Value: "", IsNil: true}
}
v := val.String()
return IDWrap{Type: t, Value: v, IsNil: false}
}
func (w IDWrap) Serialize() string {
if w.IsNil {
return "!nil" + ":" + w.Type
}
return w.Type + ":" + w.Value
}
func (w IDWrap) String() string {
if w.IsNil {
return w.Type + "<<nil>>"
}
return w.Type + "(" + w.Value + ")"
}
func deserializeIDWrap(v string) IDWrap {
r := strings.SplitN(v, ":", 2)
if len(r) == 2 && r[0] == "!nil" {
return IDWrap{Type: r[1], Value: v, IsNil: true}
}
if len(r) == 0 {
return IDWrap{}
} else if len(r) == 1 {
return IDWrap{Type: "", Value: v, IsNil: false}
} else {
return IDWrap{Type: r[0], Value: r[1], IsNil: false}
}
}
type AnyWrap struct {
Type string
Json string
IsError bool
IsNil bool
}
func newAnyWrap(val any) (result AnyWrap) {
result = AnyWrap{Type: "", Json: "", IsError: true, IsNil: false} // ensure a return in case of recover()
defer func() {
if err := recover(); err != nil {
// send error should never crash our program
log.Error().Interface("err", err).Msg("Panic while trying to marshal anywrap ( bmerror.Interface )")
}
}()
t := fmt.Sprintf("%T", val)
if langext.IsNil(val) {
return AnyWrap{Type: t, Json: "", IsError: false, IsNil: true}
}
j, err := json.Marshal(val)
if err == nil {
return AnyWrap{Type: t, Json: string(j), IsError: false, IsNil: false}
} else {
return AnyWrap{Type: t, Json: "", IsError: true, IsNil: false}
}
}
func (w AnyWrap) Serialize() string {
if w.IsError {
return "ERR" + ":" + w.Type + ":" + w.Json
} else if w.IsNil {
return "NIL" + ":" + w.Type + ":" + w.Json
} else {
return "OK" + ":" + w.Type + ":" + w.Json
}
}
func (w AnyWrap) String() string {
if w.IsError {
return "(error)"
} else if w.IsNil {
return "(nil)"
} else {
return w.Json
}
}
func deserializeAnyWrap(v string) AnyWrap {
r := strings.SplitN(v, ":", 3)
if len(r) != 3 {
return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
} else {
if r[0] == "OK" {
return AnyWrap{IsError: false, Type: r[1], Json: r[2], IsNil: false}
} else if r[0] == "ERR" {
return AnyWrap{IsError: true, Type: r[1], Json: r[2], IsNil: false}
} else if r[0] == "NIL" {
return AnyWrap{IsError: false, Type: r[1], Json: "", IsNil: true}
} else {
return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
}
}
}