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/*
* 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.tuscany.sca.binding.http.operationselector.provider;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.tuscany.sca.common.http.HTTPContext;
import org.apache.tuscany.sca.interfacedef.Interface;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Interceptor;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
import org.oasisopen.sca.ServiceRuntimeException;
/**
* Sets the operation based on the request path.
*
* From a url: http://localhost:8080/HelloworldComponent/Helloworld/sayHello?name=Petra
* where the component is HelloworldComponent and the service is Helloworld
* the path will be "/sayHello" so the operation is "sayHello".
*
* TODO: we could also do something similar to how the JMS binding supports
* a single "onMessage" method to get all requests, so perhaps this could
* also support impls with method: service(HttpServletRequest, HttpServletResponse)
*/
public class HTTPRPCServiceOperationSelectorInterceptor implements Interceptor {
private Invoker next;
private List<Operation> operations;
public HTTPRPCServiceOperationSelectorInterceptor(RuntimeEndpoint endpoint) {
Interface serviceInterface = endpoint.getService().getInterfaceContract().getInterface();
this.operations = serviceInterface.getOperations();
}
@Override
public Message invoke(Message msg) {
HTTPContext context = msg.getBindingContext();
HttpServletRequest request = context.getHttpRequest();
String path = request.getPathInfo();
if (path.startsWith("/")) {
path = path.substring(1);
}
for (Operation op : operations) {
if (op.getName().equals(path)) {
msg.setOperation(op);
return next.invoke(msg);
}
}
throw new ServiceRuntimeException("No matching operation: " + path);
}
@Override
public void setNext(Invoker next) {
this.next = next;
}
@Override
public Invoker getNext() {
return next;
}
}
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