forked from open-telemetry/opentelemetry-go
/
attribute.go
152 lines (140 loc) · 3.75 KB
/
attribute.go
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package transform // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/internal/transform"
import (
"go.opentelemetry.io/otel/attribute"
cpb "go.opentelemetry.io/proto/otlp/common/v1"
)
// AttrIter transforms an attribute iterator into OTLP key-values.
func AttrIter(iter attribute.Iterator) []*cpb.KeyValue {
l := iter.Len()
if l == 0 {
return nil
}
out := make([]*cpb.KeyValue, 0, l)
for iter.Next() {
out = append(out, KeyValue(iter.Attribute()))
}
return out
}
// KeyValues transforms a slice of attribute KeyValues into OTLP key-values.
func KeyValues(attrs []attribute.KeyValue) []*cpb.KeyValue {
if len(attrs) == 0 {
return nil
}
out := make([]*cpb.KeyValue, 0, len(attrs))
for _, kv := range attrs {
out = append(out, KeyValue(kv))
}
return out
}
// KeyValue transforms an attribute KeyValue into an OTLP key-value.
func KeyValue(kv attribute.KeyValue) *cpb.KeyValue {
return &cpb.KeyValue{Key: string(kv.Key), Value: Value(kv.Value)}
}
// Value transforms an attribute Value into an OTLP AnyValue.
func Value(v attribute.Value) *cpb.AnyValue {
av := new(cpb.AnyValue)
switch v.Type() {
case attribute.BOOL:
av.Value = &cpb.AnyValue_BoolValue{
BoolValue: v.AsBool(),
}
case attribute.BOOLSLICE:
av.Value = &cpb.AnyValue_ArrayValue{
ArrayValue: &cpb.ArrayValue{
Values: boolSliceValues(v.AsBoolSlice()),
},
}
case attribute.INT64:
av.Value = &cpb.AnyValue_IntValue{
IntValue: v.AsInt64(),
}
case attribute.INT64SLICE:
av.Value = &cpb.AnyValue_ArrayValue{
ArrayValue: &cpb.ArrayValue{
Values: int64SliceValues(v.AsInt64Slice()),
},
}
case attribute.FLOAT64:
av.Value = &cpb.AnyValue_DoubleValue{
DoubleValue: v.AsFloat64(),
}
case attribute.FLOAT64SLICE:
av.Value = &cpb.AnyValue_ArrayValue{
ArrayValue: &cpb.ArrayValue{
Values: float64SliceValues(v.AsFloat64Slice()),
},
}
case attribute.STRING:
av.Value = &cpb.AnyValue_StringValue{
StringValue: v.AsString(),
}
case attribute.STRINGSLICE:
av.Value = &cpb.AnyValue_ArrayValue{
ArrayValue: &cpb.ArrayValue{
Values: stringSliceValues(v.AsStringSlice()),
},
}
default:
av.Value = &cpb.AnyValue_StringValue{
StringValue: "INVALID",
}
}
return av
}
func boolSliceValues(vals []bool) []*cpb.AnyValue {
converted := make([]*cpb.AnyValue, len(vals))
for i, v := range vals {
converted[i] = &cpb.AnyValue{
Value: &cpb.AnyValue_BoolValue{
BoolValue: v,
},
}
}
return converted
}
func int64SliceValues(vals []int64) []*cpb.AnyValue {
converted := make([]*cpb.AnyValue, len(vals))
for i, v := range vals {
converted[i] = &cpb.AnyValue{
Value: &cpb.AnyValue_IntValue{
IntValue: v,
},
}
}
return converted
}
func float64SliceValues(vals []float64) []*cpb.AnyValue {
converted := make([]*cpb.AnyValue, len(vals))
for i, v := range vals {
converted[i] = &cpb.AnyValue{
Value: &cpb.AnyValue_DoubleValue{
DoubleValue: v,
},
}
}
return converted
}
func stringSliceValues(vals []string) []*cpb.AnyValue {
converted := make([]*cpb.AnyValue, len(vals))
for i, v := range vals {
converted[i] = &cpb.AnyValue{
Value: &cpb.AnyValue_StringValue{
StringValue: v,
},
}
}
return converted
}