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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://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 probabilisticsamplerprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/probabilisticsamplerprocessor"
import (
"context"
"sync"
"go.opencensus.io/stats/view"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config/configtelemetry"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/processor"
)
const (
// The value of "type" trace-samplers in configuration.
typeStr = "probabilistic_sampler"
// The stability level of the processor.
stability = component.StabilityLevelBeta
)
var onceMetrics sync.Once
// NewFactory returns a new factory for the Probabilistic sampler processor.
func NewFactory() processor.Factory {
onceMetrics.Do(func() {
// TODO: Handle this err
_ = view.Register(SamplingProcessorMetricViews(configtelemetry.LevelNormal)...)
})
return processor.NewFactory(
typeStr,
createDefaultConfig,
processor.WithTraces(createTracesProcessor, stability),
processor.WithLogs(createLogsProcessor, component.StabilityLevelAlpha))
}
func createDefaultConfig() component.Config {
return &Config{
AttributeSource: defaultAttributeSource,
}
}
// createTracesProcessor creates a trace processor based on this config.
func createTracesProcessor(
ctx context.Context,
set processor.CreateSettings,
cfg component.Config,
nextConsumer consumer.Traces,
) (processor.Traces, error) {
return newTracesProcessor(ctx, set, cfg.(*Config), nextConsumer)
}
// createLogsProcessor creates a log processor based on this config.
func createLogsProcessor(
ctx context.Context,
set processor.CreateSettings,
cfg component.Config,
nextConsumer consumer.Logs,
) (processor.Logs, error) {
return newLogsProcessor(ctx, set, nextConsumer, cfg.(*Config))
}