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committing_processor.go
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/
committing_processor.go
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// Copyright (c) 2018 The Jaeger 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 consumer
import (
"errors"
"io"
"github.com/jaegertracing/jaeger/cmd/ingester/app/processor"
)
type comittingProcessor struct {
processor processor.SpanProcessor
marker offsetMarker
io.Closer
}
type offsetMarker interface {
MarkOffset(int64)
}
// NewCommittingProcessor returns a processor that commits message offsets to Kafka
func NewCommittingProcessor(processor processor.SpanProcessor, marker offsetMarker) processor.SpanProcessor {
return &comittingProcessor{
processor: processor,
marker: marker,
}
}
func (d *comittingProcessor) Process(message processor.Message) error {
if msg, ok := message.(Message); ok {
err := d.processor.Process(message)
if err == nil {
d.marker.MarkOffset(msg.Offset())
}
return err
}
return errors.New("committing processor used with non-kafka message")
}