78 lines
2.1 KiB
Go
78 lines
2.1 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/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/ptrace"
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"go.opentelemetry.io/collector/pipeline"
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"go.opentelemetry.io/collector/processor"
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)
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// ProcessTracesFunc 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 ProcessTracesFunc func(context.Context, ptrace.Traces) (ptrace.Traces, error)
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type traces struct {
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component.StartFunc
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component.ShutdownFunc
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consumer.Traces
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}
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// NewTraces creates a processor.Traces that ensure context propagation and the right tags are set.
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func NewTraces(
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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.Traces,
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tracesFunc ProcessTracesFunc,
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options ...Option,
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) (processor.Traces, error) {
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if tracesFunc == nil {
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return nil, errors.New("nil tracesFunc")
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}
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obs, err := newObsReport(set, pipeline.SignalTraces)
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if err != nil {
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return nil, err
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}
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eventOptions := spanAttributes(set.ID)
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bs := fromOptions(options)
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traceConsumer, err := consumer.NewTraces(func(ctx context.Context, td ptrace.Traces) error {
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span := trace.SpanFromContext(ctx)
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span.AddEvent("Start processing.", eventOptions)
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spansIn := td.SpanCount()
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var errFunc error
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td, errFunc = tracesFunc(ctx, td)
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span.AddEvent("End processing.", eventOptions)
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if errFunc != nil {
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obs.recordInOut(ctx, spansIn, 0)
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if errors.Is(errFunc, ErrSkipProcessingData) {
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return nil
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}
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return errFunc
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}
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spansOut := td.SpanCount()
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obs.recordInOut(ctx, spansIn, spansOut)
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return nextConsumer.ConsumeTraces(ctx, td)
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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 &traces{
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StartFunc: bs.StartFunc,
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ShutdownFunc: bs.ShutdownFunc,
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Traces: traceConsumer,
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}, nil
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}
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