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resource.go
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resource.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 otlp
import (
"github.com/apache/arrow/go/v16/arrow"
"go.opentelemetry.io/collector/pdata/pcommon"
arrowutils "github.com/open-telemetry/otel-arrow/pkg/arrow"
"github.com/open-telemetry/otel-arrow/pkg/otel/constants"
"github.com/open-telemetry/otel-arrow/pkg/werror"
)
type ResourceIds struct {
Resource int
ID int
DroppedAttributesCount int
SchemaUrl int
}
func NewResourceIdsFromSchema(schema *arrow.Schema) (*ResourceIds, error) {
resource, resDT, err := arrowutils.StructFieldIDFromSchema(schema, constants.Resource)
if err != nil {
return nil, werror.Wrap(err)
}
ID, _ := arrowutils.FieldIDFromStruct(resDT, constants.ID)
droppedAttributesCount, _ := arrowutils.FieldIDFromStruct(resDT, constants.DroppedAttributesCount)
schemaUrl, _ := arrowutils.FieldIDFromStruct(resDT, constants.SchemaUrl)
return &ResourceIds{
Resource: resource,
ID: ID,
DroppedAttributesCount: droppedAttributesCount,
SchemaUrl: schemaUrl,
}, nil
}
func UpdateResourceFromRecord(r pcommon.Resource, record arrow.Record, row int, resIds *ResourceIds, attrsStore *Attributes16Store) (schemaUrl string, err error) {
resArr, err := arrowutils.StructFromRecord(record, resIds.Resource, row)
if err != nil {
return "", werror.WrapWithContext(err, map[string]interface{}{"row": row})
}
// Read schema url
schemaUrl, err = arrowutils.StringFromStruct(resArr, row, resIds.SchemaUrl)
if err != nil {
return "", werror.WrapWithContext(err, map[string]interface{}{"row": row})
}
// Read dropped attributes count
droppedAttributesCount, err := arrowutils.U32FromStruct(resArr, row, resIds.DroppedAttributesCount)
if err != nil {
return "", werror.WrapWithContext(err, map[string]interface{}{"row": row})
}
r.SetDroppedAttributesCount(droppedAttributesCount)
// Read attributes
ID, err := arrowutils.NullableU16FromStruct(resArr, row, resIds.ID)
if err != nil {
return "", werror.WrapWithContext(err, map[string]interface{}{"row": row})
}
if ID != nil {
attrs := attrsStore.AttributesByDeltaID(*ID)
if attrs != nil {
attrs.CopyTo(r.Attributes())
}
}
return
}
func ResourceIDFromRecord(record arrow.Record, row int, resIDs *ResourceIds) (uint16, error) {
resStruct, err := arrowutils.StructFromRecord(record, resIDs.Resource, row)
if err != nil {
return 0, err
}
return arrowutils.U16FromStruct(resStruct, row, resIDs.ID)
}