Package org.apache.kafka.streams.state

Class StreamsMetadata

java.lang.Object

org.apache.kafka.streams.state.StreamsMetadata

@Evolving
public class StreamsMetadata
extends java.lang.Object

Represents the state of an instance (process) in a KafkaStreams application. It contains the user supplied HostInfo that can be used by developers to build APIs and services to connect to other instances, the Set of state stores available on the instance and the Set of TopicPartitions available on the instance. NOTE: This is a point in time view. It may change when rebalances happen.

Field Summary

Fields

Modifier and Type	Field	Description
static StreamsMetadata	NOT_AVAILABLE	Sentinel to indicate that the StreamsMetadata is currently unavailable.

Constructor Summary

Constructors

Constructor	Description
StreamsMetadata(HostInfo hostInfo, java.util.Set<java.lang.String> stateStoreNames, java.util.Set<org.apache.kafka.common.TopicPartition> topicPartitions)

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object o)
int	hashCode()
java.lang.String	host()
HostInfo	hostInfo()
int	port()
java.util.Set<java.lang.String>	stateStoreNames()
java.util.Set<org.apache.kafka.common.TopicPartition>	topicPartitions()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NOT_AVAILABLE

public static final StreamsMetadata NOT_AVAILABLE

Sentinel to indicate that the StreamsMetadata is currently unavailable. This can occur during rebalance operations.

Constructor Detail

StreamsMetadata

public StreamsMetadata(HostInfo hostInfo,
                       java.util.Set<java.lang.String> stateStoreNames,
                       java.util.Set<org.apache.kafka.common.TopicPartition> topicPartitions)

Method Detail

hostInfo

public HostInfo hostInfo()

stateStoreNames

public java.util.Set<java.lang.String> stateStoreNames()

topicPartitions

public java.util.Set<org.apache.kafka.common.TopicPartition> topicPartitions()

host

public java.lang.String host()

port

public int port()

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object