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config.go
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config.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 (
"io"
"github.com/bsm/sarama-cluster"
)
// Consumer is an interface to features of Sarama that are necessary for the consumer
type Consumer interface {
Partitions() <-chan cluster.PartitionConsumer
MarkPartitionOffset(topic string, partition int32, offset int64, metadata string)
io.Closer
}
// Builder builds a new kafka consumer
type Builder interface {
NewConsumer() (Consumer, error)
}
// Configuration describes the configuration properties needed to create a Kafka consumer
type Configuration struct {
Brokers []string
Topic string
GroupID string
Consumer
}
// NewConsumer creates a new kafka consumer
func (c *Configuration) NewConsumer() (Consumer, error) {
saramaConfig := cluster.NewConfig()
saramaConfig.Group.Mode = cluster.ConsumerModePartitions
return cluster.NewConsumer(c.Brokers, c.GroupID, []string{c.Topic}, saramaConfig)
}