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package transform
import (
"go.opentelemetry.io/otel/attribute"
commonpb "go.opentelemetry.io/proto/otlp/common/v1"
)
// Attributes transforms a slice of OTLP attribute key-values into a slice of KeyValues
func Attributes(attrs []*commonpb.KeyValue) []attribute.KeyValue {
if len(attrs) == 0 {
return nil
}
out := make([]attribute.KeyValue, 0, len(attrs))
for _, a := range attrs {
if a == nil {
continue
}
kv := attribute.KeyValue{
Key: attribute.Key(a.Key),
Value: toValue(a.Value),
}
out = append(out, kv)
}
return out
}
func toValue(v *commonpb.AnyValue) attribute.Value {
switch vv := v.Value.(type) {
case *commonpb.AnyValue_BoolValue:
return attribute.BoolValue(vv.BoolValue)
case *commonpb.AnyValue_IntValue:
return attribute.Int64Value(vv.IntValue)
case *commonpb.AnyValue_DoubleValue:
return attribute.Float64Value(vv.DoubleValue)
case *commonpb.AnyValue_StringValue:
return attribute.StringValue(vv.StringValue)
case *commonpb.AnyValue_ArrayValue:
return arrayValues(vv.ArrayValue.Values)
default:
return attribute.StringValue("INVALID")
}
}
func boolArray(kv []*commonpb.AnyValue) attribute.Value {
arr := make([]bool, len(kv))
for i, v := range kv {
if v != nil {
arr[i] = v.GetBoolValue()
}
}
return attribute.BoolSliceValue(arr)
}
func intArray(kv []*commonpb.AnyValue) attribute.Value {
arr := make([]int64, len(kv))
for i, v := range kv {
if v != nil {
arr[i] = v.GetIntValue()
}
}
return attribute.Int64SliceValue(arr)
}
func doubleArray(kv []*commonpb.AnyValue) attribute.Value {
arr := make([]float64, len(kv))
for i, v := range kv {
if v != nil {
arr[i] = v.GetDoubleValue()
}
}
return attribute.Float64SliceValue(arr)
}
func stringArray(kv []*commonpb.AnyValue) attribute.Value {
arr := make([]string, len(kv))
for i, v := range kv {
if v != nil {
arr[i] = v.GetStringValue()
}
}
return attribute.StringSliceValue(arr)
}
func arrayValues(kv []*commonpb.AnyValue) attribute.Value {
if len(kv) == 0 || kv[0] == nil {
return attribute.StringSliceValue([]string{})
}
switch kv[0].Value.(type) {
case *commonpb.AnyValue_BoolValue:
return boolArray(kv)
case *commonpb.AnyValue_IntValue:
return intArray(kv)
case *commonpb.AnyValue_DoubleValue:
return doubleArray(kv)
case *commonpb.AnyValue_StringValue:
return stringArray(kv)
default:
return attribute.StringSliceValue([]string{})
}
}
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