org.apache.storm.kafka.spout.subscription

## Interface TopicFilter

- All Superinterfaces:
    Serializable
  All Known Implementing Classes:
    NamedTopicFilter, PatternTopicFilter

      public interface TopicFilter
      extends Serializable

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `Set<org.apache.kafka.common.TopicPartition>` | `getAllSubscribedPartitions(org.apache.kafka.clients.consumer.Consumer<?,?> consumer)` Get the Kafka TopicPartitions subscribed to by this set of spouts.
    `String` | `getTopicsString()` Get the topics string.

- - ### Method Detail

    - #### getAllSubscribedPartitions

          Set<org.apache.kafka.common.TopicPartition> getAllSubscribedPartitions(org.apache.kafka.clients.consumer.Consumer<?,?> consumer)

      Get the Kafka TopicPartitions subscribed to by this set of spouts.

      Parameters:
        `consumer` - The Kafka consumer to use to read the list of existing partitions
      Returns:
        The Kafka partitions this set of spouts should subscribe to

    - #### getTopicsString

          String getTopicsString()

      Get the topics string.

      Returns:
        A human-readable string representing the topics that pass the filter.

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