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.component.ref; 018 019import org.apache.camel.Component; 020import org.apache.camel.Consumer; 021import org.apache.camel.DelegateEndpoint; 022import org.apache.camel.Endpoint; 023import org.apache.camel.Processor; 024import org.apache.camel.Producer; 025import org.apache.camel.impl.DefaultEndpoint; 026import org.apache.camel.spi.Metadata; 027import org.apache.camel.spi.UriEndpoint; 028import org.apache.camel.spi.UriPath; 029import org.apache.camel.util.CamelContextHelper; 030 031/** 032 * The ref component is used for lookup of existing endpoints bound in the Registry. 033 */ 034@UriEndpoint(scheme = "ref", title = "Ref", syntax = "ref:name", label = "core,endpoint") 035public class RefEndpoint extends DefaultEndpoint implements DelegateEndpoint { 036 037 private volatile Endpoint endpoint; 038 039 @UriPath @Metadata(required = "true") 040 private String name; 041 042 public RefEndpoint(String endpointUri, Component component) { 043 super(endpointUri, component); 044 } 045 046 public String getName() { 047 return name; 048 } 049 050 /** 051 * Name of endpoint to lookup in the registry. 052 */ 053 public void setName(String name) { 054 this.name = name; 055 } 056 057 @Override 058 public Producer createProducer() throws Exception { 059 return endpoint.createProducer(); 060 } 061 062 @Override 063 public Consumer createConsumer(Processor processor) throws Exception { 064 return endpoint.createConsumer(processor); 065 } 066 067 @Override 068 public boolean isSingleton() { 069 return true; 070 } 071 072 @Override 073 public Endpoint getEndpoint() { 074 return endpoint; 075 } 076 077 @Override 078 protected void doStart() throws Exception { 079 endpoint = CamelContextHelper.mandatoryLookup(getCamelContext(), name, Endpoint.class); 080 // add the endpoint as a service so Camel can manage the endpoint and enlist the endpoint in JMX etc. 081 getCamelContext().addService(endpoint); 082 super.doStart(); 083 } 084 085 @Override 086 protected void doStop() throws Exception { 087 super.doStop(); 088 // noop 089 } 090}