/**
* 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.camel.component.atom;
import java.util.Hashtable;
import org.apache.abdera.model.Entry;
import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.apache.camel.util.jndi.CamelInitialContextFactory;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
/**
* Unit test with good sample for the wiki documentation
*/
public class AtomGoodBlogsTest extends CamelTestSupport {
// START SNIPPET: e1
// This is the CamelContext that is the heart of Camel
private CamelContext context;
// We use a simple Hashtable for our bean registry. For more advanced usage Spring is supported out-of-the-box
private Hashtable beans = new Hashtable();
// We initialize Camel
private void setupCamel() throws Exception {
// First we register a blog service in our bean registry
beans.put("blogService", new BlogService());
// Then we create the camel context with our bean registry
context = new DefaultCamelContext(new CamelInitialContextFactory().getInitialContext(beans));
// Then we add all the routes we need using the route builder DSL syntax
context.addRoutes(createRouteBuilder());
// And finally we must start Camel to let the magic routing begins
context.start();
}
/**
* This is the route builder where we create our routes in the advanced Camel DSL syntax
*/
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
public void configure() throws Exception {
// We pool the atom feeds from the source for further processing in the seda queue
// we set the delay to 1 second for each pool as this is a unit test also and we can
// not wait the default poll interval of 60 seconds.
// Using splitEntries=true will during polling only fetch one Atom Entry at any given time.
// As the feed.atom file contains 7 entries, using this will require 7 polls to fetch the entire
// content. When Camel have reach the end of entries it will refresh the atom feed from URI source
// and restart - but as Camel by default uses the UpdatedDateFilter it will only deliver new
// blog entries to "seda:feeds". So only when James Straham updates his blog with a new entry
// Camel will create an exchange for the seda:feeds.
from("atom:file:src/test/data/feed.atom?splitEntries=true&consumer.delay=1000").to("seda:feeds");
// From the feeds we filter each blot entry by using our blog service class
from("seda:feeds").filter().method("blogService", "isGoodBlog").to("seda:goodBlogs");
// And the good blogs is moved to a mock queue as this sample is also used for unit testing
// this is one of the strengths in Camel that you can also use the mock endpoint for your
// unit tests
from("seda:goodBlogs").to("mock:result");
}
};
}
/**
* This is the actual junit test method that does the assertion that our routes is working
* as expected
*/
@Test
public void testFiltering() throws Exception {
// Get the mock endpoint
MockEndpoint mock = context.getEndpoint("mock:result", MockEndpoint.class);
// There should be two good blog entries from the feed
mock.expectedMessageCount(2);
// Asserts that the above expectations is true, will throw assertions exception if it failed
// Camel will default wait max 20 seconds for the assertions to be true, if the conditions
// is true sooner Camel will continue
mock.assertIsSatisfied();
}
/**
* Services for blogs
*/
public class BlogService {
/**
* Tests the blogs if its a good blog entry or not
*/
public boolean isGoodBlog(Exchange exchange) {
Entry entry = exchange.getIn().getBody(Entry.class);
String title = entry.getTitle();
// We like blogs about Camel
boolean good = title.toLowerCase().contains("camel");
return good;
}
}
// END SNIPPET: e1
@Before
public void setUp() throws Exception {
super.setUp();
setupCamel();
}
@After
public void tearDown() throws Exception {
super.tearDown();
context.stop();
}
}