ServiceCallFilterTest.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.cloud;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.impl.cloud.ServiceCallConstants;
import org.apache.camel.spring.SpringTestSupport;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.context.support.AbstractXmlApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.test.annotation.DirtiesContext;

@DirtiesContext
public class ServiceCallFilterTest extends SpringTestSupport {
    @Test
    public void testServiceFilter() throws Exception {
        Exchange result;

        result = template.request("direct:start", emptyProcessor());
        assertHeader(result, ServiceCallConstants.SERVICE_HOST, "host1");
        assertHeader(result, ServiceCallConstants.SERVICE_PORT, 9093);

        result = template.request("direct:start", emptyProcessor());
        assertHeader(result, ServiceCallConstants.SERVICE_HOST, "host4");
        assertHeader(result, ServiceCallConstants.SERVICE_PORT, 9094);
    }

    // *********************
    // Helpers
    // *********************

    private void assertHeader(Exchange exchange, String header, Object expectedValue) {
        Assert.assertNotNull(exchange);
        Assert.assertTrue(exchange.getIn().getHeaders().containsKey(header));
        Assert.assertEquals(expectedValue, exchange.getIn().getHeader(header));
    }

    private Processor emptyProcessor() {
        return e -> {
            return;
        };
    }

    // *********************
    // Application Context
    // *********************

    @Override
    protected AbstractXmlApplicationContext createApplicationContext() {
        return new ClassPathXmlApplicationContext("org/apache/camel/spring/cloud/ServiceCallFilterTest.xml");
    }
}