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factory.go
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factory.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:https://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 routingprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/routingprocessor"
import (
"context"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config"
"go.opentelemetry.io/collector/consumer"
"go.uber.org/zap"
)
const (
// The value of "type" key in configuration.
typeStr = "routing"
// The stability level of the processor.
stability = component.StabilityLevelBeta
)
// NewFactory creates a factory for the routing processor.
func NewFactory() component.ProcessorFactory {
return component.NewProcessorFactory(
typeStr,
createDefaultConfig,
component.WithTracesProcessor(createTracesProcessor, stability),
component.WithMetricsProcessor(createMetricsProcessor, stability),
component.WithLogsProcessor(createLogsProcessor, stability),
)
}
func createDefaultConfig() config.Processor {
return &Config{
ProcessorSettings: config.NewProcessorSettings(config.NewComponentID(typeStr)),
AttributeSource: defaultAttributeSource,
}
}
func createTracesProcessor(_ context.Context, params component.ProcessorCreateSettings, cfg config.Processor, nextConsumer consumer.Traces) (component.TracesProcessor, error) {
warnIfNotLastInPipeline(nextConsumer, params.Logger)
return newTracesProcessor(params.Logger, cfg), nil
}
func createMetricsProcessor(_ context.Context, params component.ProcessorCreateSettings, cfg config.Processor, nextConsumer consumer.Metrics) (component.MetricsProcessor, error) {
warnIfNotLastInPipeline(nextConsumer, params.Logger)
return newMetricProcessor(params.Logger, cfg), nil
}
func createLogsProcessor(_ context.Context, params component.ProcessorCreateSettings, cfg config.Processor, nextConsumer consumer.Logs) (component.LogsProcessor, error) {
warnIfNotLastInPipeline(nextConsumer, params.Logger)
return newLogProcessor(params.Logger, cfg), nil
}
func warnIfNotLastInPipeline(nextConsumer interface{}, logger *zap.Logger) {
_, ok := nextConsumer.(component.Processor)
if ok {
logger.Warn("another processor has been defined after the routing processor: it will NOT receive any data!")
}
}