/**
* 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.cxf.clustering;
import java.util.List;
import org.apache.cxf.endpoint.Endpoint;
import org.apache.cxf.message.Exchange;
/**
* Supports pluggable strategies for alternate endpoint selection on
* failover.
*/
public interface FailoverStrategy {
/**
* Get the alternate endpoints for this invocation.
*
* @param exchange the current Exchange
* @return a failover endpoint if one is available
*/
List<Endpoint> getAlternateEndpoints(Exchange exchange);
/**
* Select one of the alternate endpoints for a retried invocation.
*
* @param alternates List of alternate endpoints if available
* @return the selected endpoint
*/
Endpoint selectAlternateEndpoint(List<Endpoint> alternates);
/**
* Get the alternate addresses for this invocation.
* These addresses over-ride any addresses specified in the WSDL.
*
* @param exchange the current Exchange
* @return a failover endpoint if one is available
*/
List<String> getAlternateAddresses(Exchange exchange);
/**
* Select one of the alternate addresses for a retried invocation.
*
* @param addresses List of alternate addresses if available
* @return the selected address
*/
String selectAlternateAddress(List<String> addresses);
}
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