otelzap: Implement encoder to map zap field to Otel attribute

bridges/otelzap/encoder.go

@@ -0,0 +1,120 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package otelzap // import "go.opentelemetry.io/contrib/bridges/otelzap"
+
+import (
+	"time"
+
+	"go.uber.org/zap/zapcore"
+
+	"go.opentelemetry.io/otel/log"
+)
+
+var _ zapcore.ObjectEncoder = (*objectEncoder)(nil)
+
+// Object Encoder implements zapcore.ObjectEncoder.
+// It encodes given fields to OTel attribute.
+type objectEncoder struct {
+	kv []log.KeyValue
+}
+
+// NewObjectEncoder returns new ObjectEncoder.
+func newObjectEncoder(len int) *objectEncoder {
+	keyval := make([]log.KeyValue, 0, len)
+
+	return &objectEncoder{
+		kv: keyval,
+	}
+}
+
+// TODO
+// Converts Array to log.Slice using ArrayEncoder.
+func (m *objectEncoder) AddArray(key string, v zapcore.ArrayMarshaler) error {
+	return nil
+}
+
+// TODO
+// Converts Object to log.Map.
+func (m *objectEncoder) AddObject(k string, v zapcore.ObjectMarshaler) error {
+	return nil
+}
+
+// TODO
+// Converts Binary to log.Bytes.
+func (m *objectEncoder) AddBinary(k string, v []byte) {
+}
+
+// TODO
+// Converts ByteString to log.String.
+func (m *objectEncoder) AddByteString(k string, v []byte) {
+}
+
+// TODO
+// Converts Bool to log.Bool.
+func (m *objectEncoder) AddBool(k string, v bool) {
+}
+
+// TODO
+// Converts Duration to log.Int.
+func (m *objectEncoder) AddDuration(k string, v time.Duration) {
+}
+
+// TODO
+// Converts Complex128 to log.String.
+func (m *objectEncoder) AddComplex128(k string, v complex128) {
+}
+
+// TODO
+// Converts Float64 to log.Float64.
+func (m *objectEncoder) AddFloat64(k string, v float64) {
+}
+
+// TODO
+// Converts Float32 to log.Float64.
+func (m *objectEncoder) AddFloat32(k string, v float32) {
+}
+
+// TODO
+// Converts Int64 to logInt64.
+func (m *objectEncoder) AddInt64(k string, v int64) {
+}
+
+// TODO
+// Converts Int to logInt.
+func (m *objectEncoder) AddInt(k string, v int) {
+}
+
+// TODO
+// Converts String to logString.
+func (m *objectEncoder) AddString(k string, v string) {
+}
+
+// TODO
+// Converts Uint64 to logInt64/logString.
+func (m *objectEncoder) AddUint64(k string, v uint64) {
+}
+
+// TODO
+// Converts all non-primitive types to JSON string.
+func (m *objectEncoder) AddReflected(k string, v interface{}) error {
+	return nil
+}
+
+// TODO
+// OpenNamespace opens an isolated namespace where all subsequent fields will
+// be added.
+func (m *objectEncoder) OpenNamespace(k string) {
+}
+
+// TODO.
+func (m *objectEncoder) AddComplex64(k string, v complex64) {}
+func (m *objectEncoder) AddInt32(k string, v int32)         {}
+func (m *objectEncoder) AddInt16(k string, v int16)         {}
+func (m *objectEncoder) AddInt8(k string, v int8)           {}
+func (m *objectEncoder) AddTime(k string, v time.Time)      {}
+func (m *objectEncoder) AddUint(k string, v uint)           {}
+func (m *objectEncoder) AddUint32(k string, v uint32)       {}
+func (m *objectEncoder) AddUint16(k string, v uint16)       {}
+func (m *objectEncoder) AddUint8(k string, v uint8)         {}
+func (m *objectEncoder) AddUintptr(k string, v uintptr)     {}