org.apache.flink.streaming.connectors.kafka.internals

类 KafkaPartitionDiscoverer

java.lang.Object

org.apache.flink.streaming.connectors.kafka.internals.AbstractPartitionDiscoverer

org.apache.flink.streaming.connectors.kafka.internals.KafkaPartitionDiscoverer

@Internal
public class KafkaPartitionDiscoverer
extends AbstractPartitionDiscoverer

A partition discoverer that can be used to discover topics and partitions metadata from Kafka brokers via the Kafka high-level consumer API.

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.streaming.connectors.kafka.internals.AbstractPartitionDiscoverer

AbstractPartitionDiscoverer.ClosedException, AbstractPartitionDiscoverer.WakeupException

构造器概要

构造器

构造器和说明
KafkaPartitionDiscoverer(KafkaTopicsDescriptor topicsDescriptor, int indexOfThisSubtask, int numParallelSubtasks, Properties kafkaProperties)

方法概要

限定符和类型	方法和说明
protected void	closeConnections() Close all established connections.
protected List<KafkaTopicPartition>	getAllPartitionsForTopics(List<String> topics) Fetch the list of all partitions for a specific topics list from Kafka.
protected List<String>	getAllTopics() Fetch the list of all topics from Kafka.
protected void	initializeConnections() Establish the required connections in order to fetch topics and partitions metadata.
protected void	wakeupConnections() Attempt to eagerly wakeup from blocking calls to Kafka in AbstractPartitionDiscoverer.getAllTopics() and AbstractPartitionDiscoverer.getAllPartitionsForTopics(List).

从类继承的方法 org.apache.flink.streaming.connectors.kafka.internals.AbstractPartitionDiscoverer

close, discoverPartitions, open, setAndCheckDiscoveredPartition, wakeup

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

KafkaPartitionDiscoverer

public KafkaPartitionDiscoverer(KafkaTopicsDescriptor topicsDescriptor,
                                int indexOfThisSubtask,
                                int numParallelSubtasks,
                                Properties kafkaProperties)

方法详细资料

initializeConnections

protected void initializeConnections()

从类复制的说明: AbstractPartitionDiscoverer

Establish the required connections in order to fetch topics and partitions metadata.

指定者:

initializeConnections 在类中 AbstractPartitionDiscoverer

getAllTopics

protected List<String> getAllTopics()
                             throws AbstractPartitionDiscoverer.WakeupException

从类复制的说明: AbstractPartitionDiscoverer

Fetch the list of all topics from Kafka.

指定者:

getAllTopics 在类中 AbstractPartitionDiscoverer

抛出:

AbstractPartitionDiscoverer.WakeupException

getAllPartitionsForTopics

protected List<KafkaTopicPartition> getAllPartitionsForTopics(List<String> topics)
                                                       throws AbstractPartitionDiscoverer.WakeupException,
                                                              RuntimeException

从类复制的说明: AbstractPartitionDiscoverer

Fetch the list of all partitions for a specific topics list from Kafka.

指定者:

getAllPartitionsForTopics 在类中 AbstractPartitionDiscoverer

抛出:

AbstractPartitionDiscoverer.WakeupException

RuntimeException

wakeupConnections

protected void wakeupConnections()

从类复制的说明: AbstractPartitionDiscoverer

Attempt to eagerly wakeup from blocking calls to Kafka in AbstractPartitionDiscoverer.getAllTopics() and AbstractPartitionDiscoverer.getAllPartitionsForTopics(List).

If the invocation indeed results in interrupting an actual blocking Kafka call, the implementations of AbstractPartitionDiscoverer.getAllTopics() and AbstractPartitionDiscoverer.getAllPartitionsForTopics(List) are responsible of throwing a AbstractPartitionDiscoverer.WakeupException.

指定者:

wakeupConnections 在类中 AbstractPartitionDiscoverer

closeConnections

protected void closeConnections()
                         throws Exception

从类复制的说明: AbstractPartitionDiscoverer

Close all established connections.

指定者:

closeConnections 在类中 AbstractPartitionDiscoverer

抛出:

Exception