程序包 org.apache.pulsar.functions.api.state

接口 CounterStateStore

  • 所有超级接口:
    java.lang.AutoCloseable, StateStore
    public interface CounterStateStore
extends StateStore
    The state store supports counters.

    • 方法概要

      所有方法 实例方法 抽象方法 
      修饰符和类型 方法 说明
      long getCounter​(java.lang.String key)
      Retrieve the counter value for the key.
      java.util.concurrent.CompletableFuture<java.lang.Long> getCounterAsync​(java.lang.String key)
      Retrieve the counter value for the key, but don't wait for the operation to be completed
      void incrCounter​(java.lang.String key, long amount)
      Increment the builtin distributed counter referred by key.
      java.util.concurrent.CompletableFuture<java.lang.Void> incrCounterAsync​(java.lang.String key, long amount)
      Increment the builtin distributed counter referred by key but dont wait for the completion of the increment operation

    • 方法详细资料

      • incrCounter

        void incrCounter​(java.lang.String key,
                 long amount)
        Increment the builtin distributed counter referred by key.
        参数:
        key - The name of the key
        amount - The amount to be incremented

      • incrCounterAsync

        java.util.concurrent.CompletableFuture<java.lang.Void> incrCounterAsync​(java.lang.String key,
                                                                        long amount)
        Increment the builtin distributed counter referred by key but dont wait for the completion of the increment operation
        参数:
        key - The name of the key
        amount - The amount to be incremented

      • getCounter

        long getCounter​(java.lang.String key)
        Retrieve the counter value for the key.
        参数:
        key - name of the key
        返回:
        the amount of the counter value for this key

      • getCounterAsync

        java.util.concurrent.CompletableFuture<java.lang.Long> getCounterAsync​(java.lang.String key)
        Retrieve the counter value for the key, but don't wait for the operation to be completed
        参数:
        key - name of the key
        返回:
        the amount of the counter value for this key