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Merge pull request #92 from lovoo/make-builders-builders
Make builders builders
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Original file line number | Diff line number | Diff line change |
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package kafka | ||
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import ( | ||
"hash" | ||
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"github.com/Shopify/sarama" | ||
cluster "github.com/bsm/sarama-cluster" | ||
) | ||
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// ConsumerBuilder creates a Kafka consumer. | ||
type ConsumerBuilder func(brokers []string, group, clientID string) (Consumer, error) | ||
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// DefaultConsumerBuilder creates a Kafka consumer using the Sarama library. | ||
func DefaultConsumerBuilder(brokers []string, group, clientID string) (Consumer, error) { | ||
config := NewConfig() | ||
config.ClientID = clientID | ||
return NewSaramaConsumer(brokers, group, config) | ||
} | ||
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// ConsumerBuilderWithConfig creates a Kafka consumer using the Sarama library. | ||
func ConsumerBuilderWithConfig(config *cluster.Config) ConsumerBuilder { | ||
return func(brokers []string, group, clientID string) (Consumer, error) { | ||
config.ClientID = clientID | ||
return NewSaramaConsumer(brokers, group, config) | ||
} | ||
} | ||
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// ProducerBuilder create a Kafka producer. | ||
type ProducerBuilder func(brokers []string, clientID string, hasher func() hash.Hash32) (Producer, error) | ||
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// DefaultProducerBuilder creates a Kafka producer using the Sarama library. | ||
func DefaultProducerBuilder(brokers []string, clientID string, hasher func() hash.Hash32) (Producer, error) { | ||
config := NewConfig() | ||
config.ClientID = clientID | ||
config.Producer.Partitioner = sarama.NewCustomHashPartitioner(hasher) | ||
return NewProducer(brokers, &config.Config) | ||
} | ||
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// ProducerBuilderWithConfig creates a Kafka consumer using the Sarama library. | ||
func ProducerBuilderWithConfig(config *cluster.Config) ProducerBuilder { | ||
return func(brokers []string, clientID string, hasher func() hash.Hash32) (Producer, error) { | ||
config.ClientID = clientID | ||
config.Producer.Partitioner = sarama.NewCustomHashPartitioner(hasher) | ||
return NewProducer(brokers, &config.Config) | ||
} | ||
} | ||
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// TopicManagerBuilder creates a TopicManager to check partition counts and | ||
// create tables. | ||
type TopicManagerBuilder func(brokers []string) (TopicManager, error) | ||
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// DefaultTopicManagerBuilder creates TopicManager using the Sarama library. | ||
// This topic manager cannot create topics. | ||
func DefaultTopicManagerBuilder(brokers []string) (TopicManager, error) { | ||
return NewSaramaTopicManager(brokers) | ||
} | ||
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// ZKTopicManagerBuilder creates a TopicManager that connects with ZooKeeper to | ||
// check partition counts and create tables. | ||
func ZKTopicManagerBuilder(servers []string) TopicManagerBuilder { | ||
return func([]string) (TopicManager, error) { | ||
return NewTopicManager(servers, NewTopicManagerConfig()) | ||
} | ||
} | ||
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// ZKTopicManagerBuilderWithConfig creates a TopicManager that connects with ZooKeeper to | ||
// check partition counts and create tables given a topic configuration. | ||
func ZKTopicManagerBuilderWithConfig(servers []string, config *TopicManagerConfig) TopicManagerBuilder { | ||
return func([]string) (TopicManager, error) { | ||
return NewTopicManager(servers, config) | ||
} | ||
} |
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