001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.model; 018 019import java.util.Map; 020 021import javax.xml.bind.annotation.XmlAccessType; 022import javax.xml.bind.annotation.XmlAccessorType; 023import javax.xml.bind.annotation.XmlAnyAttribute; 024import javax.xml.bind.annotation.XmlTransient; 025import javax.xml.bind.annotation.XmlType; 026import javax.xml.namespace.QName; 027 028import org.apache.camel.processor.loadbalancer.LoadBalancer; 029import org.apache.camel.spi.Metadata; 030 031/** 032 * Balances message processing among a number of nodes 033 */ 034@Metadata(label = "eip,routing") 035@XmlType(name = "loadBalancer") 036@XmlAccessorType(XmlAccessType.FIELD) 037public class LoadBalancerDefinition extends IdentifiedType implements OtherAttributesAware { 038 @XmlTransient 039 private LoadBalancer loadBalancer; 040 @XmlTransient 041 private String loadBalancerTypeName; 042 // use xs:any to support optional property placeholders 043 @XmlAnyAttribute 044 private Map<QName, Object> otherAttributes; 045 046 public LoadBalancerDefinition() { 047 } 048 049 public LoadBalancerDefinition(LoadBalancer loadBalancer) { 050 this.loadBalancer = loadBalancer; 051 } 052 053 protected LoadBalancerDefinition(String loadBalancerTypeName) { 054 this.loadBalancerTypeName = loadBalancerTypeName; 055 } 056 057 /** 058 * Maximum number of outputs, as some load balancers only support 1 059 * processor 060 */ 061 public int getMaximumNumberOfOutputs() { 062 return Integer.MAX_VALUE; 063 } 064 065 /** 066 * Allows derived classes to customize the load balancer 067 */ 068 public void configureLoadBalancer(LoadBalancer loadBalancer) { 069 } 070 071 public LoadBalancer getLoadBalancer() { 072 return loadBalancer; 073 } 074 075 public void setLoadBalancer(LoadBalancer loadBalancer) { 076 this.loadBalancer = loadBalancer; 077 } 078 079 public String getLoadBalancerTypeName() { 080 return loadBalancerTypeName; 081 } 082 083 @Override 084 public Map<QName, Object> getOtherAttributes() { 085 return otherAttributes; 086 } 087 088 @Override 089 public void setOtherAttributes(Map<QName, Object> otherAttributes) { 090 this.otherAttributes = otherAttributes; 091 } 092 093 @Override 094 public String toString() { 095 if (loadBalancer != null) { 096 return loadBalancer.toString(); 097 } else { 098 return loadBalancerTypeName; 099 } 100 } 101}