程序包 org.apache.pulsar.client.api

Enum Class SubscriptionType

java.lang.Object
java.lang.Enum<SubscriptionType>
org.apache.pulsar.client.api.SubscriptionType
所有已实现的接口:
Serializable, Comparable<SubscriptionType>, Constable
@Public @Stable public enum SubscriptionType extends Enum<SubscriptionType>
Types of subscription supported by Pulsar.

  • 嵌套类概要

    从类继承的嵌套类/接口 java.lang.Enum

    Enum.EnumDesc<E extends Enum<E>>

  • 枚举常量概要

    枚举常量
    枚举常量
    说明
    Exclusive
    There can be only 1 consumer on the same topic with the same subscription name.
    Failover
    Multiple consumer will be able to use the same subscription name but only 1 consumer will receive the messages.
    Key_Shared
    Multiple consumer will be able to use the same subscription and all messages with the same key will be dispatched to only one consumer.
    Shared
    Multiple consumer will be able to use the same subscription name and the messages will be dispatched according to a round-robin rotation between the connected consumers.

  • 方法概要

    修饰符和类型
    方法
    说明
    static SubscriptionType
    valueOf(String name)
    Returns the enum constant of this class with the specified name.
    static SubscriptionType[]
    values()
    Returns an array containing the constants of this enum class, in the order they are declared.

    从类继承的方法 java.lang.Enum

    clone, compareTo, describeConstable, 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

    • Exclusive

      public static final SubscriptionType Exclusive
      There can be only 1 consumer on the same topic with the same subscription name.

    • Shared

      public static final SubscriptionType Shared
      Multiple consumer will be able to use the same subscription name and the messages will be dispatched according to a round-robin rotation between the connected consumers.

      In this mode, the consumption order is not guaranteed.

    • Failover

      public static final SubscriptionType Failover
      Multiple consumer will be able to use the same subscription name but only 1 consumer will receive the messages. If that consumer disconnects, one of the other connected consumers will start receiving messages.

      In failover mode, the consumption ordering is guaranteed.

      In case of partitioned topics, the ordering is guaranteed on a per-partition basis. The partitions assignments will be split across the available consumers. On each partition, at most one consumer will be active at a given point in time.

    • Key_Shared

      public static final SubscriptionType Key_Shared
      Multiple consumer will be able to use the same subscription and all messages with the same key will be dispatched to only one consumer.

      Use ordering_key to overwrite the message key for message ordering.

  • 方法详细资料

    • values

      public static SubscriptionType[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      返回:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static SubscriptionType 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.)
      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 - if this enum class has no constant with the specified name
      NullPointerException - 如果参数为空值