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TopicFilter.java
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TopicFilter.java
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/*
* Copyright 2017 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.storm.kafka.spout.subscription;
import java.io.Serializable;
import java.util.Set;
import org.apache.kafka.clients.consumer.Consumer;
import org.apache.kafka.common.TopicPartition;
public interface TopicFilter extends Serializable {
/**
* Get the Kafka TopicPartitions subscribed to by this set of spouts.
* @param consumer The Kafka consumer to use to read the list of existing partitions
* @return The Kafka partitions this set of spouts should subscribe to
*/
Set<TopicPartition> getAllSubscribedPartitions(Consumer<?, ?> consumer);
/**
* Get the topics string.
* @return A human-readable string representing the topics that pass the filter.
*/
String getTopicsString();
}