forked from open-telemetry/opentelemetry-collector
/
logs.go
71 lines (61 loc) · 1.92 KB
/
logs.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package processorhelper // import "go.opentelemetry.io/collector/processor/processorhelper"
import (
"context"
"errors"
"go.opentelemetry.io/otel/trace"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/pdata/plog"
"go.opentelemetry.io/collector/processor"
)
// ProcessLogsFunc is a helper function that processes the incoming data and returns the data to be sent to the next component.
// If error is returned then returned data are ignored. It MUST not call the next component.
type ProcessLogsFunc func(context.Context, plog.Logs) (plog.Logs, error)
type logProcessor struct {
component.StartFunc
component.ShutdownFunc
consumer.Logs
}
// NewLogsProcessor creates a processor.Logs that ensure context propagation and the right tags are set.
func NewLogsProcessor(
_ context.Context,
set processor.CreateSettings,
_ component.Config,
nextConsumer consumer.Logs,
logsFunc ProcessLogsFunc,
options ...Option,
) (processor.Logs, error) {
// TODO: Add observability metrics support
if logsFunc == nil {
return nil, errors.New("nil logsFunc")
}
if nextConsumer == nil {
return nil, component.ErrNilNextConsumer
}
eventOptions := spanAttributes(set.ID)
bs := fromOptions(options)
logsConsumer, err := consumer.NewLogs(func(ctx context.Context, ld plog.Logs) error {
span := trace.SpanFromContext(ctx)
span.AddEvent("Start processing.", eventOptions)
var err error
ld, err = logsFunc(ctx, ld)
span.AddEvent("End processing.", eventOptions)
if err != nil {
if errors.Is(err, ErrSkipProcessingData) {
return nil
}
return err
}
return nextConsumer.ConsumeLogs(ctx, ld)
}, bs.consumerOptions...)
if err != nil {
return nil, err
}
return &logProcessor{
StartFunc: bs.StartFunc,
ShutdownFunc: bs.ShutdownFunc,
Logs: logsConsumer,
}, nil
}