io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.retry.MessageKeyGenerator Maven / Gradle / Ivy
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/*
* Copyright 2002-2016 the original author or authors.
*
* 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 io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.rabbit.retry;
import io.bitsensor.plugins.shaded.io.bitsensor.plugins.shaded.org.springframework.amqp.core.Message;
/**
* @author Dave Syer
*
*/
public interface MessageKeyGenerator {
/**
* Generate a unique key for the message that is repeatable on redelivery. Implementations should be very careful
* about assuming uniqueness of any element of the message, especially considering the requirement that it be
* repeatable. A message id is ideal, but may not be present (AMQP does not mandate it), and the message body is a
* byte array whose contents might be repeatable, but its object value is not.
*
* @param message the message to generate a key for
* @return a unique key for this message
*/
Object getKey(Message message);
}