CamelEventNotifierTest.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.apache.camel.spring.boot;

import java.util.EventObject;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.camel.CamelContext;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.spi.EventNotifier;
import org.apache.camel.support.EventNotifierSupport;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringRunner;

@DirtiesContext
@RunWith(SpringRunner.class)
@EnableAutoConfiguration
@SpringBootTest(classes = CamelEventNotifierTest.class)
public class CamelEventNotifierTest extends Assert {

    @Configuration
    static class Config {

        @Bean
        RouteBuilder routeBuilder() {
            return new RouteBuilder() {
                @Override
                public void configure() throws Exception {
                    from("direct:start").to("mock:result");
                }
            };
        }

        @Bean
        public EventNotifier myEventNotifier() {
            return new MyEventNotifier();
        }

    }

    @Autowired
    CamelContext camelContext;

    @Autowired
    ProducerTemplate producerTemplate;

    @Test
    public void testEventNotifier() throws InterruptedException {
        MockEndpoint mockEndpoint = camelContext.getEndpoint("mock:result", MockEndpoint.class);
        mockEndpoint.expectedMessageCount(1);

        producerTemplate.sendBody("direct:start", "Hello World");

        mockEndpoint.assertIsSatisfied();

        MyEventNotifier notifier = (MyEventNotifier) camelContext.getManagementStrategy().getEventNotifiers().get(0);
        assertNotNull(notifier);
        assertTrue(notifier.getCount() > 0);
    }

    public static class MyEventNotifier extends EventNotifierSupport {

        private final AtomicInteger counter = new AtomicInteger();

        @Override
        public void notify(EventObject event) throws Exception {
            counter.incrementAndGet();
        }

        @Override
        public boolean isEnabled(EventObject event) {
            return true;
        }

        public int getCount() {
            return counter.get();
        }

    }

}