org.apache.pulsar.client.api

枚举 MessageRoutingMode

java.lang.Object

java.lang.Enum<MessageRoutingMode>

org.apache.pulsar.client.api.MessageRoutingMode

所有已实现的接口:

Serializable, Comparable<MessageRoutingMode>

public enum MessageRoutingMode
extends Enum<MessageRoutingMode>

Default routing mode for messages to partition.

This logic is applied when the application is not setting a key MessageBuilder#setKey(String) on a particular message.

枚举常量概要

枚举常量

枚举常量和说明
CustomPartition Use custom message router implementation that will be called to determine the partition for a particular message.
RoundRobinPartition If no key is provided, the producer will publish messages across all partitions in round-robin fashion to achieve maximum throughput.
SinglePartition If no key is provided, The partitioned producer will randomly pick one single partition and publish all the messages into that partition.

方法概要

限定符和类型	方法和说明
static MessageRoutingMode	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static MessageRoutingMode[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

SinglePartition

public static final MessageRoutingMode SinglePartition

If no key is provided, The partitioned producer will randomly pick one single partition and publish all the messages into that partition. If a key is provided on the message, the partitioned producer will hash the key and assign message to a particular partition.

RoundRobinPartition

public static final MessageRoutingMode RoundRobinPartition

If no key is provided, the producer will publish messages across all partitions in round-robin fashion to achieve maximum throughput. Please note that round-robin is not done per individual message but rather it's set to the same boundary of batching delay, to ensure batching is effective.

While if a key is specified on the message, the partitioned producer will hash the key and assign message to a particular partition.

CustomPartition

public static final MessageRoutingMode CustomPartition

Use custom message router implementation that will be called to determine the partition for a particular message.

方法详细资料

values

public static MessageRoutingMode[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (MessageRoutingMode c : MessageRoutingMode.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static MessageRoutingMode valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值