/**
* Licensed to the Austrian Association for Software Tool Integration (AASTI)
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. The AASTI 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.openengsb.core.services.internal.virtual;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import org.openengsb.core.api.AliveState;
import org.openengsb.core.api.Connector;
import org.openengsb.core.api.remote.MethodCall;
import org.openengsb.core.api.remote.MethodResult;
import org.openengsb.core.api.remote.OutgoingPortUtilService;
import org.openengsb.core.common.VirtualConnector;
import org.openengsb.core.ekb.api.TransformationEngine;
import org.openengsb.core.services.internal.TransformationHandler;
/**
* Representation of a connector that forwards all method-calls to a remote connector. Communication is done using a
* port-implementation (like jms+json)
*/
public class ProxyConnector extends VirtualConnector {
private String portId;
private String destination;
private final Map<String, String> metadata = new HashMap<String, String>();
private String domainId;
private String connectorId;
private OutgoingPortUtilService portUtil;
private ProxyRegistration registration;
private TransformationEngine transformationEngine;
private Class<?> connectorInterface;
public ProxyConnector(String instanceId, OutgoingPortUtilService portUtil, ProxyRegistration registration) {
super(instanceId);
this.portUtil = portUtil;
this.registration = registration;
}
@Override
public Object doInvoke(Object proxy, Method method, Object[] args) throws Throwable {
if (method.getDeclaringClass().equals(Connector.class)) {
return this.getClass().getMethod(method.getName(), method.getParameterTypes()).invoke(this, args);
}
TransformationHandler transformationHandler = TransformationHandler
.newTransformationHandler(transformationEngine, method, connectorInterface);
transformationHandler.getTargetMethod();
Method targetMethod = transformationHandler.getTargetMethod();
Object[] targetArgs = transformationHandler.transformArguments(args);
MethodCall methodCall = new MethodCall(targetMethod, targetArgs, metadata);
if (!registration.isRegistered()) {
if (targetMethod.getName().equals("getAliveState")) {
return AliveState.OFFLINE;
}
throw new IllegalArgumentException("not registered");
}
MethodResult callResult =
portUtil.sendMethodCallWithResult(registration.getPortId(), registration.getDestination(), methodCall);
switch (callResult.getType()) {
case Object:
Object result = callResult.getArg();
return transformationHandler.transformResult(result);
case Void:
return null;
case Exception:
throw new RuntimeException(callResult.getArg().toString());
default:
throw new IllegalStateException("Return Type has to be either Void, Object or Exception");
}
}
public final void setPortId(String id) {
portId = id;
}
public final void setDestination(String destination) {
this.destination = destination;
}
public void addMetadata(String key, String value) {
metadata.put(key, value);
}
public final void setOutgoingPortUtilService(OutgoingPortUtilService portUtil) {
this.portUtil = portUtil;
}
public final String getPortId() {
return portId;
}
public final String getDestination() {
return destination;
}
public final OutgoingPortUtilService getCallRouter() {
return portUtil;
}
public String getDomainId() {
return domainId;
}
public void setDomainId(String domainId) {
this.domainId = domainId;
}
public String getConnectorId() {
return connectorId;
}
public void setConnectorId(String connectorId) {
this.connectorId = connectorId;
}
public void setConnectorInterface(Class<?> connectorInterface) {
this.connectorInterface = connectorInterface;
}
public void setTransformationEngine(TransformationEngine transformationEngine) {
this.transformationEngine = transformationEngine;
}
}