86 lines
2.8 KiB
Go
86 lines
2.8 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package spanprocessor
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import (
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"context"
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"errors"
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"go.opentelemetry.io/collector/component"
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"go.opentelemetry.io/collector/config/configerror"
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"go.opentelemetry.io/collector/config/configmodels"
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"go.opentelemetry.io/collector/consumer"
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)
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const (
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// typeStr is the value of "type" Span processor in the configuration.
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typeStr = "span"
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)
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// errMissingRequiredField is returned when a required field in the config
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// is not specified.
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// TODO https://go.opentelemetry.io/collector/issues/215
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// Move this to the error package that allows for span name and field to be specified.
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var errMissingRequiredField = errors.New("error creating \"span\" processor: either \"from_attributes\" or \"to_attributes\" must be specified in \"name:\"")
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// Factory is the factory for the Span processor.
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type Factory struct {
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}
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var _ component.ProcessorFactory = (*Factory)(nil)
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// Type gets the type of the config created by this factory.
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func (f *Factory) Type() configmodels.Type {
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return typeStr
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}
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// CreateDefaultConfig creates the default configuration for processor.
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func (f *Factory) CreateDefaultConfig() configmodels.Processor {
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return &Config{
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ProcessorSettings: configmodels.ProcessorSettings{
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TypeVal: typeStr,
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NameVal: typeStr,
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},
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}
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}
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// CreateTraceProcessor creates a trace processor based on this config.
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func (f *Factory) CreateTraceProcessor(
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_ context.Context,
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_ component.ProcessorCreateParams,
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nextConsumer consumer.TraceConsumer,
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cfg configmodels.Processor) (component.TraceProcessor, error) {
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// 'from_attributes' or 'to_attributes' under 'name' has to be set for the span
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// processor to be valid. If not set and not enforced, the processor would do no work.
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oCfg := cfg.(*Config)
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if len(oCfg.Rename.FromAttributes) == 0 &&
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(oCfg.Rename.ToAttributes == nil || len(oCfg.Rename.ToAttributes.Rules) == 0) {
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return nil, errMissingRequiredField
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}
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return newSpanProcessor(nextConsumer, *oCfg)
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}
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// CreateMetricsProcessor creates a metric processor based on this config.
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func (f *Factory) CreateMetricsProcessor(
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_ context.Context,
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_ component.ProcessorCreateParams,
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_ consumer.MetricsConsumer,
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_ configmodels.Processor) (component.MetricsProcessor, error) {
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// Span Processor does not support Metrics.
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return nil, configerror.ErrDataTypeIsNotSupported
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}
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