Merge pull request #1 from abyssparanoia/feature/impl-zap-marshal-lag…

…-object

feat: impl zap object marshaler

errors.go

@@ -9,6 +9,7 @@ import (
 	"log/slog"
 
 	"github.com/google/uuid"
+	"go.uber.org/zap/zapcore"
 )
 
 // New creates a new error with message
@@ -262,3 +263,47 @@ func (x *Error) LogValue() slog.Value {
 
 	return slog.GroupValue(attrs...)
 }
+
+func (x *Error) MarshalLogObject(enc zapcore.ObjectEncoder) error {
+	if x == nil {
+		enc.AddString("message", "<nil>")
+		return nil
+	}
+	enc.AddString("message", x.msg)
+	enc.AddArray("values", zapcore.ArrayMarshalerFunc(func(inner zapcore.ArrayEncoder) error {
+		for k, v := range x.values {
+			inner.AppendObject(zapcore.ObjectMarshalerFunc(func(enc zapcore.ObjectEncoder) error {
+				enc.AddString("key", k)
+				enc.AddReflected("value", v)
+				return nil
+			}))
+		}
+		return nil
+	}))
+	var traces []string
+	for _, st := range x.StackTrace() {
+		traces = append(traces, fmt.Sprintf("%s:%d %s", st.file(), st.line(), st.name()))
+	}
+	enc.AddArray("stacktrace", zapcore.ArrayMarshalerFunc(func(inner zapcore.ArrayEncoder) error {
+		for _, st := range traces {
+			inner.AppendString(st)
+		}
+		return nil
+	}))
+
+	if x.cause != nil {
+		got := false
+		if inCause := x.Unwrap(); inCause != nil {
+			if err, ok := inCause.(*Error); ok {
+				if err := err.MarshalLogObject(enc); err != nil {
+					return err
+				}
+			}
+			got = true
+		}
+		if !got {
+			enc.AddString("cause", x.cause.Error())
+		}
+	}
+	return nil
+}

go.mod

@@ -2,4 +2,9 @@ module github.com/m-mizutani/goerr
 
 go 1.21
 
-require github.com/google/uuid v1.6.0
+require (
+	github.com/google/uuid v1.6.0
+	go.uber.org/zap v1.27.0
+)
+
+require go.uber.org/multierr v1.10.0 // indirect

go.sum

@@ -1,2 +1,16 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
+go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
+go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
+go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=