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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.test;
import java.io.File;
import org.junit.Assert;
import org.oasisopen.sca.NoRegisteredCallbackException;
import org.oasisopen.sca.ServiceReference;
import org.oasisopen.sca.annotation.Reference;
import org.oasisopen.sca.annotation.Service;
@Service(CallBackSetCallbackClient.class)
public class CallBackSetCallbackClientImpl implements CallBackSetCallbackClient {
@Reference
protected ServiceReference<CallBackSetCalbackService> aCallBackService;
@Reference
protected ServiceReference<CallBackSetCallbackCallback> callBack;
public void run() {
// This test various aspects of the setCallback() API in a stateless
// scope.
/*
* test4 Client does not implement the callback interface but calls
* setCallback with a service reference before invoking the target,
* Verify successful execution.
*/
test4();
/*
* test5 The client does not implement the callback interface and does
* not call setCallback() before invoking the target. Verify a
* NoRegisteredCallbackException is thrown.
*/
test5();
/*
* test6() The client calls setCallback() with an object that is not a
* service reference and the callback interface is stateless. Verify
* that an appropriate exception is thrown. When calling setCallback
* with an object the interface must be stateful. Stateless interfaces
* require a service Reference.
*/
test6();
/*
* test10 The target calls setCallback() on its own service reference,
* e.g. getRequestContext().getServiceReference().getCallback(). Verify
* an appropriate exception occurs.
*/
test10();
}
private void test4() {
//
// Since callbacks do not synchronously return and this test results in
// a callback to a component other
// than this client I am using a marker file to determine the outcome.
// The presence of the marker
// file will be used for the Assertion test. If it exists then the
// callback occurred and all is good.
//
// Make sure the marker file is not present before starting the test.
File aFile = new File("target/test4_marker");
if (aFile.exists()) {
aFile.delete();
}
aCallBackService.setCallback(callBack);
aCallBackService.getService().knockKnock("Knock Knock");
// Lets give the callback a little time to complete....
int count = 0;
long timeout = 1000;
while (count++ < 30 && (aFile.exists() == false)) {
try {
Thread.sleep(timeout);
} catch (InterruptedException ie) {
}
}
Assert.assertEquals("CallBackSetCallback - Test4", true, aFile.exists());
aCallBackService.setCallback(null); // leave this in the default state for next test
}
private void test5() {
boolean correctException = false;
//
// The backend service is expecting a callback reference to be set. This
// test will not
// set one so an exception is expected. According to the spec if a
// client calls a method on
// a service reference prior to calling setCallback() then a
// NoRegisteredCallbackException
// will be thrown on the client.
//
try {
aCallBackService.getService().knockKnock("Knock Knock");
} catch (NoRegisteredCallbackException NotRegEx) {
correctException = true;
} catch (Exception ex) {
ex.printStackTrace();
}
Assert.assertEquals("CallBackSetCallback - Test5", true, correctException);
}
private void test6() {
boolean correctException = false;
//
// This test is to specify an Object that is not a service reference
// that does implement
// the callback interface. However because this callback service is
// stateless the expected
// result is an appropriate exception.
//
try {
aCallBackService.setCallback(new CallBackSetCallbackObjectCallback());
aCallBackService.getService().knockKnock("Knock Knock");
}
//
// This should catch an appropriate exception.
//
catch (IllegalArgumentException goodEx) {
correctException = true;
} catch (Exception ex) {
ex.printStackTrace();
}
Assert.assertEquals("CallBackSetCallback - Test6", true, correctException);
}
private void test10() {
//
// The appropriate exception should be thrown and caught on the service side.
// If this happens, the setCallbackIllegally() method will return true.
// If not, this method will return false.
//
aCallBackService.setCallback(callBack); // ensure no client-side exception
boolean result =
aCallBackService.getService().setCallbackIllegally("Try to set callback on your own service reference");
Assert.assertEquals("CallBackSetCallback - Test10", true, result);
}
}
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