org.apache.pulsar.client.api.ConsumerEventListener Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.pulsar.client.api;
import java.io.Serializable;
import org.apache.pulsar.common.classification.InterfaceAudience;
import org.apache.pulsar.common.classification.InterfaceStability;
/**
* Listener on the consumer state changes.
*/
@InterfaceAudience.Public
@InterfaceStability.Stable
public interface ConsumerEventListener extends Serializable {
/**
* Notified when the consumer group is changed, and the consumer becomes the active consumer.
*
* @param consumer
* the consumer that originated the event
* @param partitionId
* the id of the partition that became active
*/
void becameActive(Consumer consumer, int partitionId);
/**
* Notified when the consumer group is changed, and the consumer is still inactive or becomes inactive.
*
* @param consumer
* the consumer that originated the event
* @param partitionId
* the id of the partition that became inactive
*/
void becameInactive(Consumer consumer, int partitionId);
}