/**
* 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.camel.blueprint;
import java.util.Set;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;
import org.apache.aries.blueprint.services.ExtendedBlueprintContainer;
import org.apache.camel.CamelContext;
import org.apache.camel.Endpoint;
import org.apache.camel.FailedToCreateProducerException;
import org.apache.camel.Producer;
import org.apache.camel.component.bean.ProxyHelper;
import org.apache.camel.core.xml.AbstractCamelFactoryBean;
import org.apache.camel.util.ServiceHelper;
/**
* A factory to create a Proxy to a a Camel Pojo Endpoint.
*/
@XmlRootElement(name = "proxy")
@XmlAccessorType(XmlAccessType.FIELD)
public class CamelProxyFactoryBean extends AbstractCamelFactoryBean<Object> {
@XmlAttribute
private String serviceUrl;
@XmlAttribute
private String serviceRef;
@XmlAttribute
private String serviceInterface;
@XmlTransient
private Endpoint endpoint;
@XmlTransient
private Object serviceProxy;
@XmlTransient
private Producer producer;
@XmlTransient
private ExtendedBlueprintContainer blueprintContainer;
public Object getObject() {
return serviceProxy;
}
public Class<Object> getObjectType() {
return Object.class;
}
protected CamelContext getCamelContextWithId(String camelContextId) {
if (blueprintContainer != null) {
return (CamelContext) blueprintContainer.getComponentInstance(camelContextId);
}
return null;
}
@Override
protected CamelContext discoverDefaultCamelContext() {
if (blueprintContainer != null) {
Set<String> ids = BlueprintCamelContextLookupHelper.lookupBlueprintCamelContext(blueprintContainer);
if (ids.size() == 1) {
// there is only 1 id for a BlueprintCamelContext so fallback and use this
return getCamelContextWithId(ids.iterator().next());
}
}
return null;
}
public void afterPropertiesSet() throws Exception {
if (endpoint == null) {
getCamelContext();
if (getServiceUrl() == null && getServiceRef() == null) {
throw new IllegalArgumentException("serviceUrl or serviceRef must be specified.");
}
if (getServiceInterface() == null) {
throw new IllegalArgumentException("serviceInterface must be specified.");
}
// lookup endpoint or we have the url for it
if (getServiceRef() != null) {
endpoint = getCamelContext().getRegistry().lookupByNameAndType(getServiceRef(), Endpoint.class);
} else {
endpoint = getCamelContext().getEndpoint(getServiceUrl());
}
if (endpoint == null) {
throw new IllegalArgumentException("Could not resolve endpoint: " + getServiceUrl());
}
}
try {
producer = endpoint.createProducer();
ServiceHelper.startService(producer);
Class<?> clazz = blueprintContainer.loadClass(getServiceInterface());
serviceProxy = ProxyHelper.createProxy(endpoint, producer, clazz);
} catch (Exception e) {
throw new FailedToCreateProducerException(endpoint, e);
}
}
public void destroy() throws Exception {
ServiceHelper.stopService(producer);
}
public String getServiceUrl() {
return serviceUrl;
}
public void setServiceUrl(String serviceUrl) {
this.serviceUrl = serviceUrl;
}
public String getServiceRef() {
return serviceRef;
}
public void setServiceRef(String serviceRef) {
this.serviceRef = serviceRef;
}
public String getServiceInterface() {
return serviceInterface;
}
public void setServiceInterface(String serviceInterface) {
this.serviceInterface = serviceInterface;
}
public Endpoint getEndpoint() {
return endpoint;
}
public void setEndpoint(Endpoint endpoint) {
this.endpoint = endpoint;
}
public Producer getProducer() {
return producer;
}
public void setProducer(Producer producer) {
this.producer = producer;
}
public ExtendedBlueprintContainer getBlueprintContainer() {
return blueprintContainer;
}
public void setBlueprintContainer(ExtendedBlueprintContainer blueprintContainer) {
this.blueprintContainer = blueprintContainer;
}
}