/*
* Copyright (c) 2010-2014. Axon Framework
*
* 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.axonframework.commandhandling.distributed;
/**
* @author Allard Buijze
* @since 2.0
*/
public enum UnresolvedRoutingKeyPolicy {
/**
* Policy that indicates that Routing Key resolution should fail with an Exception when no routing key can be found
* for a Command Message.
* <p/>
* When the routing key is based on static content in the Command Message, the exception raised should extend from
* {@link org.axonframework.common.AxonNonTransientException} to indicate that retries do not have a chance to
* succeed.
*/
ERROR,
/**
* Policy that indicates a random key is to be returned when no Routing Key can be found for a Command Message.
* Although not required to be fully random, implementations are required to return a different key for each
* incoming command. Multiple invocations for the same command message may return the same value, but are not
* required to do so.
* <p/>
* This effectively means the Command Message is routed to a random segment.
*/
RANDOM_KEY,
/**
* Policy that indicates a fixed key ("unresolved") should be returned when no Routing Key can be found for a
* Command Message. This effectively means all Command Messages with unresolved routing keys are routed to a the
* same segment. The load of that segment may therefore not match the load factor.
*/
STATIC_KEY
}