func NewExclusivePartitioner(topic string) sarama.Partitioner {
this := &exclusivePartitioner{
hasher: sarama.NewHashPartitioner(topic),
}
return this
}
func TestSuite(t *testing.T) {
RegisterFailHandler(Fail)
client, err := sarama.NewClient("sarama-cluster-client", []string{"127.0.0.1:29092"}, &sarama.ClientConfig{
MetadataRetries: 30,
WaitForElection: time.Second,
})
checkOrFail(t, err)
defer client.Close()
producer, err := sarama.NewProducer(client, &sarama.ProducerConfig{
Partitioner: sarama.NewHashPartitioner(),
MaxBufferedBytes: 1024 * 1024,
MaxBufferTime: 1000,
})
checkOrFail(t, err)
defer producer.Close()
for i := 0; i < 10000; i++ {
checkOrFail(t, producer.SendMessage(tnT, nil, sarama.ByteEncoder([]byte("PLAINDATA"))))
}
RunSpecs(t, "sarama/cluster")
}
func (k *KafkaOutput) Init(config interface{}) (err error) {
k.config = config.(*KafkaOutputConfig)
if len(k.config.Addrs) == 0 {
return errors.New("addrs must have at least one entry")
}
k.cconfig = sarama.NewClientConfig()
k.cconfig.MetadataRetries = k.config.MetadataRetries
k.cconfig.WaitForElection = time.Duration(k.config.WaitForElection) * time.Millisecond
k.cconfig.BackgroundRefreshFrequency = time.Duration(k.config.BackgroundRefreshFrequency) * time.Millisecond
k.cconfig.DefaultBrokerConf = sarama.NewBrokerConfig()
k.cconfig.DefaultBrokerConf.MaxOpenRequests = k.config.MaxOpenRequests
k.cconfig.DefaultBrokerConf.DialTimeout = time.Duration(k.config.DialTimeout) * time.Millisecond
k.cconfig.DefaultBrokerConf.ReadTimeout = time.Duration(k.config.ReadTimeout) * time.Millisecond
k.cconfig.DefaultBrokerConf.WriteTimeout = time.Duration(k.config.WriteTimeout) * time.Millisecond
k.pconfig = sarama.NewProducerConfig()
switch k.config.Partitioner {
case "Random":
k.pconfig.Partitioner = sarama.NewRandomPartitioner()
if len(k.config.HashVariable) > 0 {
return fmt.Errorf("hash_variable should not be set for the %s partitioner", k.config.Partitioner)
}
case "RoundRobin":
k.pconfig.Partitioner = new(sarama.RoundRobinPartitioner)
if len(k.config.HashVariable) > 0 {
return fmt.Errorf("hash_variable should not be set for the %s partitioner", k.config.Partitioner)
}
case "Hash":
k.pconfig.Partitioner = sarama.NewHashPartitioner()
if k.hashVariable = verifyMessageVariable(k.config.HashVariable); k.hashVariable == nil {
return fmt.Errorf("invalid hash_variable: %s", k.config.HashVariable)
}
default:
return fmt.Errorf("invalid partitioner: %s", k.config.Partitioner)
}
if len(k.config.Topic) == 0 {
if k.topicVariable = verifyMessageVariable(k.config.TopicVariable); k.topicVariable == nil {
return fmt.Errorf("invalid topic_variable: %s", k.config.TopicVariable)
}
} else if len(k.config.TopicVariable) > 0 {
return errors.New("topic and topic_variable cannot both be set")
}
switch k.config.RequiredAcks {
case "NoResponse":
k.pconfig.RequiredAcks = sarama.NoResponse
case "WaitForLocal":
k.pconfig.RequiredAcks = sarama.WaitForLocal
case "WaitForAll":
k.pconfig.RequiredAcks = sarama.WaitForAll
default:
return fmt.Errorf("invalid required_acks: %s", k.config.RequiredAcks)
}
k.pconfig.Timeout = time.Duration(k.config.Timeout) * time.Millisecond
switch k.config.CompressionCodec {
case "None":
k.pconfig.Compression = sarama.CompressionNone
case "GZIP":
k.pconfig.Compression = sarama.CompressionGZIP
case "Snappy":
k.pconfig.Compression = sarama.CompressionSnappy
default:
return fmt.Errorf("invalid compression_codec: %s", k.config.CompressionCodec)
}
k.pconfig.MaxBufferedBytes = k.config.MaxBufferedBytes
k.pconfig.MaxBufferTime = time.Duration(k.config.MaxBufferTime) * time.Millisecond
k.pconfig.BackPressureThresholdBytes = k.config.BackPressureThresholdBytes
k.client, err = sarama.NewClient(k.config.Id, k.config.Addrs, k.cconfig)
if err != nil {
return
}
k.producer, err = sarama.NewProducer(k.client, k.pconfig)
return
}
// NewKafkaDefaultPartitioner 创建一个部分兼容kafka.producer.DefaultPartitioner的分区算法
//
// 1) key是string,int32和int64,使用kafka.producer.DefaultPartitioner的算法,即使用java.lang.Object.hashcode做hash取摸
//
// 2) key是其他类型,使用sarama.NewHashPartitioner的算法
func NewKafkaDefaultPartitioner(topic string) sarama.Partitioner {
p := sarama.NewHashPartitioner(topic)
return &kafkaDefaultPartitioner{p}
}