factory.go

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package attributesprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/attributesprocessor"

import (
	"context"

	"go.opentelemetry.io/collector/component"
	"go.opentelemetry.io/collector/consumer"
	"go.opentelemetry.io/collector/processor"
	"go.opentelemetry.io/collector/processor/processorhelper"

	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal/attraction"
	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/filter/filterconfig"
	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/filter/filterlog"
	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/filter/filtermetric"
	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/filter/filterspan"
	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/attributesprocessor/internal/metadata"
)

var processorCapabilities = consumer.Capabilities{MutatesData: true}

// NewFactory returns a new factory for the Attributes processor.
func NewFactory() processor.Factory {
	return processor.NewFactory(
		metadata.Type,
		createDefaultConfig,
		processor.WithTraces(createTracesProcessor, metadata.TracesStability),
		processor.WithLogs(createLogsProcessor, metadata.LogsStability),
		processor.WithMetrics(createMetricsProcessor, metadata.MetricsStability))
}

// Note: This isn't a valid configuration because the processor would do no work.
func createDefaultConfig() component.Config {
	return &Config{}
}

func createTracesProcessor(
	ctx context.Context,
	set processor.Settings,
	cfg component.Config,
	nextConsumer consumer.Traces,
) (processor.Traces, error) {
	oCfg := cfg.(*Config)
	attrProc, err := attraction.NewAttrProc(&oCfg.Settings)
	if err != nil {
		return nil, err
	}
	skipExpr, err := filterspan.NewSkipExpr(&oCfg.MatchConfig)
	if err != nil {
		return nil, err
	}
	return processorhelper.NewTracesProcessor(
		ctx,
		set,
		cfg,
		nextConsumer,
		newSpanAttributesProcessor(set.Logger, attrProc, skipExpr).processTraces,
		processorhelper.WithCapabilities(processorCapabilities))
}

func createLogsProcessor(
	ctx context.Context,
	set processor.Settings,
	cfg component.Config,
	nextConsumer consumer.Logs,
) (processor.Logs, error) {
	oCfg := cfg.(*Config)
	attrProc, err := attraction.NewAttrProc(&oCfg.Settings)
	if err != nil {
		return nil, err
	}

	skipExpr, err := filterlog.NewSkipExpr(&oCfg.MatchConfig)
	if err != nil {
		return nil, err
	}

	return processorhelper.NewLogsProcessor(
		ctx,
		set,
		cfg,
		nextConsumer,
		newLogAttributesProcessor(set.Logger, attrProc, skipExpr).processLogs,
		processorhelper.WithCapabilities(processorCapabilities))
}

func createMetricsProcessor(
	ctx context.Context,
	set processor.Settings,
	cfg component.Config,
	nextConsumer consumer.Metrics,
) (processor.Metrics, error) {

	oCfg := cfg.(*Config)
	attrProc, err := attraction.NewAttrProc(&oCfg.Settings)
	if err != nil {
		return nil, err
	}

	skipExpr, err := filtermetric.NewSkipExpr(
		filterconfig.CreateMetricMatchPropertiesFromDefault(oCfg.Include),
		filterconfig.CreateMetricMatchPropertiesFromDefault(oCfg.Exclude),
	)
	if err != nil {
		return nil, err
	}

	return processorhelper.NewMetricsProcessor(
		ctx,
		set,
		cfg,
		nextConsumer,
		newMetricAttributesProcessor(set.Logger, attrProc, skipExpr).processMetrics,
		processorhelper.WithCapabilities(processorCapabilities))
}