You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.1 KiB
82 lines
2.1 KiB
package kafka
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import (
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"github.com/Shopify/sarama"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/notification"
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"github.com/seaweedfs/seaweedfs/weed/util"
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"google.golang.org/protobuf/proto"
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)
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func init() {
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notification.MessageQueues = append(notification.MessageQueues, &KafkaQueue{})
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}
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type KafkaQueue struct {
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topic string
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producer sarama.AsyncProducer
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}
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func (k *KafkaQueue) GetName() string {
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return "kafka"
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}
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func (k *KafkaQueue) Initialize(configuration util.Configuration, prefix string) (err error) {
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glog.V(0).Infof("filer.notification.kafka.hosts: %v\n", configuration.GetStringSlice(prefix+"hosts"))
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glog.V(0).Infof("filer.notification.kafka.topic: %v\n", configuration.GetString(prefix+"topic"))
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return k.initialize(
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configuration.GetStringSlice(prefix+"hosts"),
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configuration.GetString(prefix+"topic"),
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)
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}
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func (k *KafkaQueue) initialize(hosts []string, topic string) (err error) {
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config := sarama.NewConfig()
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config.Producer.RequiredAcks = sarama.WaitForLocal
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config.Producer.Partitioner = sarama.NewHashPartitioner
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config.Producer.Return.Successes = true
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config.Producer.Return.Errors = true
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k.producer, err = sarama.NewAsyncProducer(hosts, config)
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if err != nil {
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return err
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}
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k.topic = topic
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go k.handleSuccess()
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go k.handleError()
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return nil
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}
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func (k *KafkaQueue) SendMessage(key string, message proto.Message) (err error) {
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bytes, err := proto.Marshal(message)
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if err != nil {
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return
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}
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msg := &sarama.ProducerMessage{
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Topic: k.topic,
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Key: sarama.StringEncoder(key),
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Value: sarama.ByteEncoder(bytes),
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}
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k.producer.Input() <- msg
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return nil
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}
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func (k *KafkaQueue) handleSuccess() {
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for {
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pm := <-k.producer.Successes()
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if pm != nil {
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glog.V(3).Infof("producer message success, partition:%d offset:%d key:%v", pm.Partition, pm.Offset, pm.Key)
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}
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}
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}
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func (k *KafkaQueue) handleError() {
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for {
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err := <-k.producer.Errors()
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if err != nil {
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glog.Errorf("producer message error, partition:%d offset:%d key:%v value:%s error(%v) topic:%s", err.Msg.Partition, err.Msg.Offset, err.Msg.Key, err.Msg.Value, err.Err, k.topic)
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}
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}
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}
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