81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package processorhelper // import "go.opentelemetry.io/collector/processor/processorhelper"
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import (
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"context"
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"errors"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/trace"
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"go.opentelemetry.io/collector/component"
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"go.opentelemetry.io/collector/consumer"
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"go.opentelemetry.io/collector/pdata/plog"
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"go.opentelemetry.io/collector/processor"
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)
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// ProcessLogsFunc is a helper function that processes the incoming data and returns the data to be sent to the next component.
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// If error is returned then returned data are ignored. It MUST not call the next component.
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type ProcessLogsFunc func(context.Context, plog.Logs) (plog.Logs, error)
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type logProcessor struct {
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component.StartFunc
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component.ShutdownFunc
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consumer.Logs
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}
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// NewLogsProcessor creates a processor.Logs that ensure context propagation and the right tags are set.
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func NewLogsProcessor(
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_ context.Context,
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set processor.Settings,
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_ component.Config,
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nextConsumer consumer.Logs,
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logsFunc ProcessLogsFunc,
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options ...Option,
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) (processor.Logs, error) {
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// TODO: Add observability metrics support
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if logsFunc == nil {
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return nil, errors.New("nil logsFunc")
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}
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obs, err := newObsReport(ObsReportSettings{
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ProcessorID: set.ID,
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ProcessorCreateSettings: set,
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})
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if err != nil {
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return nil, err
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}
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obs.otelAttrs = append(obs.otelAttrs, attribute.String("otel.signal", "logs"))
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eventOptions := spanAttributes(set.ID)
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bs := fromOptions(options)
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logsConsumer, err := consumer.NewLogs(func(ctx context.Context, ld plog.Logs) error {
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span := trace.SpanFromContext(ctx)
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span.AddEvent("Start processing.", eventOptions)
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recordsIn := ld.LogRecordCount()
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ld, err = logsFunc(ctx, ld)
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span.AddEvent("End processing.", eventOptions)
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if err != nil {
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if errors.Is(err, ErrSkipProcessingData) {
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return nil
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}
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return err
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}
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recordsOut := ld.LogRecordCount()
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obs.recordInOut(ctx, recordsIn, recordsOut)
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return nextConsumer.ConsumeLogs(ctx, ld)
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}, bs.consumerOptions...)
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if err != nil {
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return nil, err
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}
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return &logProcessor{
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StartFunc: bs.StartFunc,
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ShutdownFunc: bs.ShutdownFunc,
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Logs: logsConsumer,
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}, nil
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}
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