SmooksProcessorTest.java

/**
 * 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.milyn.smooks.camel.processor;

import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Set;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.management.MBeanServer;
import javax.management.ObjectInstance;
import javax.management.ObjectName;

import org.apache.camel.CamelExecutionException;
import org.apache.camel.EndpointInject;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.impl.DefaultExchange;
import org.apache.camel.spi.ManagementAgent;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.custommonkey.xmlunit.XMLUnit;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
import org.milyn.delivery.Filter;
import org.milyn.io.StreamUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

/**
 * Unit test for {@link SmooksProcessor}.
 * 
 * @author Christian Mueller
 * @author Daniel Bevenius
 */
public class SmooksProcessorTest extends CamelTestSupport
{
    @EndpointInject(uri = "mock:result")
    private MockEndpoint result;
    private MBeanServer mbeanServer;

    @BeforeClass
    public static void setup()
    {
        XMLUnit.setIgnoreWhitespace(true);
        System.setProperty(Filter.STREAM_FILTER_TYPE, "DOM");
    }

    @AfterClass
    public static void resetFilter()
    {
        System.getProperties().remove(Filter.STREAM_FILTER_TYPE);
    }

    @Before
    public void getMbeanServer()
    {
        ManagementAgent managementAgent = context.getManagementStrategy().getManagementAgent();
        mbeanServer = managementAgent.getMBeanServer();
    }

    @Override
    protected boolean useJmx()
    {
        return true;
    }

    @Test
    public void process() throws Exception
    {
        assertOneProcessedMessage();
    }
    
    private void assertOneProcessedMessage() throws Exception
    {
        result.expectedMessageCount(1);
        template.sendBody("direct://input", getOrderEdi());
    
        assertMockEndpointsSatisfied();
    
        Exchange exchange = result.assertExchangeReceived(0);
        assertIsInstanceOf(Document.class, exchange.getIn().getBody());
        assertXMLEqual(getExpectedOrderXml(), exchange.getIn().getBody(String.class));
    }

    @Test
    public void processWithAttachment() throws CamelExecutionException, IOException 
    {
        final DefaultExchange exchange = new DefaultExchange(context);
        final String attachmentContent = "A dummy attachment";
        final String attachmentId = "testAttachment";
        addAttachment(attachmentContent, attachmentId, exchange);
        exchange.getIn().setBody(getOrderEdi());
        
        template.send("direct://input", exchange);
        
        final DataHandler datahandler = result.assertExchangeReceived(0).getIn().getAttachment(attachmentId);
        assertThat(datahandler, is(notNullValue()));
        assertThat(datahandler.getContent(), is(instanceOf(ByteArrayInputStream.class)));
        
        final String actualAttachmentContent = getAttachmentContent(datahandler);
        assertThat(actualAttachmentContent, is(equalTo(attachmentContent)));
    }
    
    private void addAttachment(final String attachment, final String id, final Exchange exchange) 
    {
        final DataSource ds = new StringDataSource(attachment);
        final DataHandler dataHandler = new DataHandler(ds);
        exchange.getIn().addAttachment(id, dataHandler);
    }
    
    private String getAttachmentContent(final DataHandler datahandler) throws IOException 
    {
        final ByteArrayInputStream bs = (ByteArrayInputStream) datahandler.getContent();
        return new String(StreamUtils.readStream(bs));
    }

    @Test
    public void assertSmooksReportWasCreated() throws Exception
    {
        assertOneProcessedMessage();

        File report = new File("target/smooks-report.html");
        report.deleteOnExit();
        assertTrue("Smooks report was not generated.", report.exists());
    }

    @Test
    @Ignore
    public void stopStartContext() throws Exception
    {
        ObjectInstance smooksProcessorMBean = getSmooksProcessorObjectInstance();

        assertOneProcessedMessage();
        stopSmooksProcessor(smooksProcessorMBean.getObjectName());
        Thread.sleep(500);

        startSmooksProcessor(smooksProcessorMBean.getObjectName());
        Thread.sleep(500);

        assertOneProcessedMessage();
    }

    private void stopSmooksProcessor(ObjectName objectName) throws Exception
    {
        invokeVoidNoArgsMethod(objectName, "stop");
    }

    private void invokeVoidNoArgsMethod(ObjectName objectName, String methodName) throws Exception
    {
        mbeanServer.invoke(objectName, methodName, null, null);
    }

    private void startSmooksProcessor(ObjectName objectName) throws Exception
    {
        invokeVoidNoArgsMethod(objectName, "start");
    }

    private ObjectInstance getSmooksProcessorObjectInstance() throws Exception
    {
        ObjectInstance mbean = null;
        Set<ObjectInstance> queryMBeans = mbeanServer.queryMBeans(new ObjectName("*:*,type=processors"), null);
        for (ObjectInstance objectInstance : queryMBeans)
        {
            if (objectInstance.getObjectName().toString().contains(SmooksProcessor.class.getSimpleName()))
            {
	            mbean = objectInstance;
            }
        }
        assertNotNull(mbean);
        return mbean;
    }

    protected RouteBuilder createRouteBuilder() throws Exception
    {
        return new RouteBuilder()
        {
            public void configure() throws Exception
            {
                SmooksProcessor processor = new SmooksProcessor("edi-to-xml-smooks-config.xml", context);
                processor.setReportPath("target/smooks-report.html");

                from("direct:input").process(processor).convertBodyTo(Node.class).to("mock:result");
            }
        };
    }

    private String getExpectedOrderXml() throws IOException
    {
        return StreamUtils.readStream(new InputStreamReader(getClass().getResourceAsStream("/xml/expected-order.xml")));
    }
    
    private String getOrderEdi() throws IOException
    {
        return StreamUtils.readStream(new InputStreamReader(getClass().getResourceAsStream("/data/order.edi")));
    }
    
    private class StringDataSource implements DataSource
    {
        private final String string;

        private StringDataSource(final String string) 
        {
            this.string = string;
            
        }
        
        public String getContentType()
        {
            return "text/plain";
        }

        public InputStream getInputStream() throws IOException
        {
            return new ByteArrayInputStream(string.getBytes());
        }

        public String getName()
        {
            return "StringDataSource";
        }

        public OutputStream getOutputStream() throws IOException
        {
            throw new IOException("Method 'getOutputStream' is not implmeneted");
        }
        
    }
}