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Copy pathkafka.go
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97 lines (82 loc) · 2.41 KB
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/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* 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 target
import (
"encoding/json"
"net/url"
"github.com/minio/minio/pkg/event"
xnet "github.com/minio/minio/pkg/net"
sarama "gopkg.in/Shopify/sarama.v1"
)
// KafkaArgs - Kafka target arguments.
type KafkaArgs struct {
Enable bool `json:"enable"`
Brokers []xnet.Host `json:"brokers"`
Topic string `json:"topic"`
}
// KafkaTarget - Kafka target.
type KafkaTarget struct {
id event.TargetID
args KafkaArgs
producer sarama.SyncProducer
}
// ID - returns target ID.
func (target *KafkaTarget) ID() event.TargetID {
return target.id
}
// Send - sends event to Kafka.
func (target *KafkaTarget) Send(eventData event.Event) error {
objectName, err := url.QueryUnescape(eventData.S3.Object.Key)
if err != nil {
return err
}
key := eventData.S3.Bucket.Name + "/" + objectName
data, err := json.Marshal(event.Log{eventData.EventName, key, []event.Event{eventData}})
if err != nil {
return err
}
msg := sarama.ProducerMessage{
Topic: target.args.Topic,
Key: sarama.StringEncoder(key),
Value: sarama.ByteEncoder(data),
}
_, _, err = target.producer.SendMessage(&msg)
return err
}
// Close - closes underneath kafka connection.
func (target *KafkaTarget) Close() error {
return target.producer.Close()
}
// NewKafkaTarget - creates new Kafka target.
func NewKafkaTarget(id string, args KafkaArgs) (*KafkaTarget, error) {
config := sarama.NewConfig()
config.Producer.RequiredAcks = sarama.WaitForAll
config.Producer.Retry.Max = 10
config.Producer.Return.Successes = true
brokers := []string{}
for _, broker := range args.Brokers {
brokers = append(brokers, broker.String())
}
producer, err := sarama.NewSyncProducer(brokers, config)
if err != nil {
return nil, err
}
return &KafkaTarget{
id: event.TargetID{id, "kafka"},
args: args,
producer: producer,
}, nil
}