Package org.apache.kafka.streams.state.internals

Class MeteredTimestampedKeyValueStore<K,V>

java.lang.Object

org.apache.kafka.streams.state.internals.WrappedStateStore<KeyValueStore<org.apache.kafka.common.utils.Bytes,byte[]>,K,V>

org.apache.kafka.streams.state.internals.MeteredKeyValueStore<K,ValueAndTimestamp<V>>

org.apache.kafka.streams.state.internals.MeteredTimestampedKeyValueStore<K,V>

Type Parameters:

K -

V -

All Implemented Interfaces:

StateStore, CachedStateStore<K,ValueAndTimestamp<V>>, KeyValueStore<K,ValueAndTimestamp<V>>, ReadOnlyKeyValueStore<K,ValueAndTimestamp<V>>, TimestampedKeyValueStore<K,V>

public class MeteredTimestampedKeyValueStore<K,V>
extends MeteredKeyValueStore<K,ValueAndTimestamp<V>>
implements TimestampedKeyValueStore<K,V>

A Metered TimestampedKeyValueStore wrapper that is used for recording operation metrics, and hence its inner KeyValueStore implementation do not need to provide its own metrics collecting functionality. The inner KeyValueStore of this class is of type <Bytes,byte[]>, hence we use Serdes to convert from <K,ValueAndTimestamp<V>> to <Bytes,byte[]>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MeteredTimestampedKeyValueStore.RawAndDeserializedValue<ValueType>

Field Summary

Fields inherited from class org.apache.kafka.streams.state.internals.MeteredKeyValueStore

getSensor, putSensor, time

Method Summary

Modifier and Type	Method	Description
MeteredTimestampedKeyValueStore.RawAndDeserializedValue<V>	getWithBinary(K key)
protected org.apache.kafka.common.serialization.Serde<ValueAndTimestamp<V>>	prepareValueSerdeForStore(org.apache.kafka.common.serialization.Serde<ValueAndTimestamp<V>> valueSerde, org.apache.kafka.common.serialization.Serde<?> contextKeySerde, org.apache.kafka.common.serialization.Serde<?> contextValueSerde)
boolean	putIfDifferentValues(K key, ValueAndTimestamp<V> newValue, byte[] oldSerializedValue)

Methods inherited from class org.apache.kafka.streams.state.internals.MeteredKeyValueStore

all, approximateNumEntries, close, delete, flush, get, init, keyBytes, outerValue, put, putAll, putIfAbsent, range, setFlushListener

Methods inherited from class org.apache.kafka.streams.state.internals.WrappedStateStore

isOpen, isTimestamped, name, persistent, wrapped

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.kafka.streams.state.KeyValueStore

delete, put, putAll, putIfAbsent

Methods inherited from interface org.apache.kafka.streams.state.ReadOnlyKeyValueStore

all, approximateNumEntries, get, range

Methods inherited from interface org.apache.kafka.streams.processor.StateStore

close, flush, init, isOpen, name, persistent

Method Detail

prepareValueSerdeForStore

protected org.apache.kafka.common.serialization.Serde<ValueAndTimestamp<V>> prepareValueSerdeForStore(org.apache.kafka.common.serialization.Serde<ValueAndTimestamp<V>> valueSerde,
                                                                                                      org.apache.kafka.common.serialization.Serde<?> contextKeySerde,
                                                                                                      org.apache.kafka.common.serialization.Serde<?> contextValueSerde)

Overrides:

prepareValueSerdeForStore in class MeteredKeyValueStore<K,ValueAndTimestamp<V>>

getWithBinary

public MeteredTimestampedKeyValueStore.RawAndDeserializedValue<V> getWithBinary(K key)

putIfDifferentValues

public boolean putIfDifferentValues(K key,
                                    ValueAndTimestamp<V> newValue,
                                    byte[] oldSerializedValue)