Package com.linkedin.davinci.config

Enum Class NearlineLatencyTimestampSource

java.lang.Object

java.lang.Enum<NearlineLatencyTimestampSource>

com.linkedin.davinci.config.NearlineLatencyTimestampSource

All Implemented Interfaces:

Serializable, Comparable<NearlineLatencyTimestampSource>, Constable

public enum NearlineLatencyTimestampSource
extends Enum<NearlineLatencyTimestampSource>

Selects which timestamp the leader carries in LeaderMetadata.upstreamMessageTimestamp when producing a record to the version topic from a consumed upstream message.

Followers use this timestamp to compute true per-record end-to-end nearline ingestion latency. Both options are millisecond-since-epoch values, but they answer different operational questions:

• BROKER — the upstream pub-sub system's append timestamp, falling back to the upstream producer's wall clock when the broker timestamp is unavailable. Matches the SLI definition the leader uses today via PubSubMessage.getPubSubMessageTime() and is the infra-only latency view.
• PRODUCER — the upstream producer's wall clock as embedded in KafkaMessageEnvelope.producerMetadata.messageTimestamp. Includes upstream-client enqueue-to-produce latency, giving the application-perceived end-to-end view.

Default is BROKER.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
BROKER
PRODUCER

Method Summary

Modifier and Type	Method	Description
static NearlineLatencyTimestampSource	parse(String value)
static NearlineLatencyTimestampSource	valueOf(String name)	Returns the enum constant of this class with the specified name.
static NearlineLatencyTimestampSource[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

BROKER

public static final NearlineLatencyTimestampSource BROKER

PRODUCER

public static final NearlineLatencyTimestampSource PRODUCER

Method Details

values

public static NearlineLatencyTimestampSource[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static NearlineLatencyTimestampSource valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

parse

public static NearlineLatencyTimestampSource parse(String value)