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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 echo.provider;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.xml.namespace.QName;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.policy.PolicySet;
import echo.provider.policy.EncryptionPolicyHandler;
import echo.provider.policy.PolicyHandler;
/**
* Invoker that applies policies before invocation for the sample echo binding.
*/
public class EchoBindingPoliciedInvoker implements Invoker {
List<PolicySet> policies = null;
Map<QName, PolicyHandler> policyHandlers = new HashMap<QName, PolicyHandler>();
public EchoBindingPoliciedInvoker(List<PolicySet> policies) {
this.policies = policies;
policyHandlers.put(new QName("http://test", "EncryptionPolicy"), new EncryptionPolicyHandler());
}
public Message invoke(Message msg) {
try {
Object[] args = msg.getBody();
applyPolicies(args);
// echo back the first parameter, a real binding would invoke some API for flowing the request
Object result = args[0];
msg.setBody(result);
} catch (Exception e) {
msg.setFaultBody(e);
}
return msg;
}
private void applyPolicies(Object[] args) throws Exception {
for (PolicySet policySet : policies) {
PolicyHandler policyHandler = policyHandlers.get(policySet.getName());
policyHandler.applyPolicy(args, policySet);
}
}
}
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