forked from jaegertracing/jaeger
/
builder.go
79 lines (70 loc) · 2.54 KB
/
builder.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 builder
import (
"fmt"
"github.com/uber/jaeger-lib/metrics"
"go.uber.org/zap"
"github.com/jaegertracing/jaeger/cmd/ingester/app"
"github.com/jaegertracing/jaeger/cmd/ingester/app/consumer"
"github.com/jaegertracing/jaeger/cmd/ingester/app/processor"
kafkaConsumer "github.com/jaegertracing/jaeger/pkg/kafka/consumer"
"github.com/jaegertracing/jaeger/plugin/storage/kafka"
"github.com/jaegertracing/jaeger/storage/spanstore"
)
// CreateConsumer creates a new span consumer for the ingester
func CreateConsumer(logger *zap.Logger, metricsFactory metrics.Factory, spanWriter spanstore.Writer, options app.Options) (*consumer.Consumer, error) {
var unmarshaller kafka.Unmarshaller
if options.Encoding == app.EncodingJSON {
unmarshaller = kafka.NewJSONUnmarshaller()
} else if options.Encoding == app.EncodingProto {
unmarshaller = kafka.NewProtobufUnmarshaller()
} else {
return nil, fmt.Errorf(`encoding '%s' not recognised, use one of ("%s" or "%s")`,
options.Encoding, app.EncodingProto, app.EncodingJSON)
}
spParams := processor.SpanProcessorParams{
Writer: spanWriter,
Unmarshaller: unmarshaller,
}
spanProcessor := processor.NewSpanProcessor(spParams)
consumerConfig := kafkaConsumer.Configuration{
Brokers: options.Brokers,
Topic: options.Topic,
GroupID: options.GroupID,
}
saramaConsumer, err := consumerConfig.NewConsumer()
if err != nil {
return nil, err
}
factoryParams := consumer.ProcessorFactoryParams{
Topic: options.Topic,
Parallelism: options.Parallelism,
SaramaConsumer: saramaConsumer,
BaseProcessor: spanProcessor,
Logger: logger,
Factory: metricsFactory,
}
processorFactory, err := consumer.NewProcessorFactory(factoryParams)
if err != nil {
return nil, err
}
consumerParams := consumer.Params{
InternalConsumer: saramaConsumer,
ProcessorFactory: *processorFactory,
Factory: metricsFactory,
Logger: logger,
}
return consumer.New(consumerParams)
}