79 lines
2.5 KiB
Go
79 lines
2.5 KiB
Go
// 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 spanprocessor
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
|
|
"go.opentelemetry.io/collector/component"
|
|
"go.opentelemetry.io/collector/config"
|
|
"go.opentelemetry.io/collector/consumer"
|
|
"go.opentelemetry.io/collector/processor/processorhelper"
|
|
)
|
|
|
|
const (
|
|
// typeStr is the value of "type" Span processor in the configuration.
|
|
typeStr = "span"
|
|
)
|
|
|
|
var processorCapabilities = consumer.Capabilities{MutatesData: true}
|
|
|
|
// errMissingRequiredField is returned when a required field in the config
|
|
// is not specified.
|
|
// TODO https://github.com/open-telemetry/opentelemetry-collector/issues/215
|
|
// Move this to the error package that allows for span name and field to be specified.
|
|
var errMissingRequiredField = errors.New("error creating \"span\" processor: either \"from_attributes\" or \"to_attributes\" must be specified in \"name:\"")
|
|
|
|
// NewFactory returns a new factory for the Span processor.
|
|
func NewFactory() component.ProcessorFactory {
|
|
return processorhelper.NewFactory(
|
|
typeStr,
|
|
createDefaultConfig,
|
|
processorhelper.WithTraces(createTracesProcessor))
|
|
}
|
|
|
|
func createDefaultConfig() config.Processor {
|
|
return &Config{
|
|
ProcessorSettings: config.NewProcessorSettings(config.NewID(typeStr)),
|
|
}
|
|
}
|
|
|
|
func createTracesProcessor(
|
|
_ context.Context,
|
|
_ component.ProcessorCreateSettings,
|
|
cfg config.Processor,
|
|
nextConsumer consumer.Traces,
|
|
) (component.TracesProcessor, error) {
|
|
|
|
// 'from_attributes' or 'to_attributes' under 'name' has to be set for the span
|
|
// processor to be valid. If not set and not enforced, the processor would do no work.
|
|
oCfg := cfg.(*Config)
|
|
if len(oCfg.Rename.FromAttributes) == 0 &&
|
|
(oCfg.Rename.ToAttributes == nil || len(oCfg.Rename.ToAttributes.Rules) == 0) {
|
|
return nil, errMissingRequiredField
|
|
}
|
|
|
|
sp, err := newSpanProcessor(*oCfg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return processorhelper.NewTracesProcessor(
|
|
cfg,
|
|
nextConsumer,
|
|
sp.processTraces,
|
|
processorhelper.WithCapabilities(processorCapabilities))
|
|
}
|