程序包 org.apache.pulsar.client.api

枚举 MessageRoutingMode

  • 所有已实现的接口:
    java.io.Serializable, java.lang.Comparable<MessageRoutingMode>
    @Public
@Stable
public enum MessageRoutingMode
extends java.lang.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 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

      所有方法 静态方法 具体方法 
      修饰符和类型 方法 说明
      static MessageRoutingMode valueOf​(java.lang.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​(java.lang.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:
        java.lang.IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量
        java.lang.NullPointerException - 如果参数为空值