components/camel-consul/src/test/java/org/apache/camel/component/consul/ConsulHealthTest.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.component.consul;

import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.UUID;

import com.orbitz.consul.AgentClient;
import com.orbitz.consul.model.agent.ImmutableRegistration;
import com.orbitz.consul.model.agent.Registration;
import com.orbitz.consul.model.health.ServiceHealth;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.consul.endpoint.ConsulHealthActions;
import org.junit.Assert;
import org.junit.Test;

public class ConsulHealthTest extends ConsulTestSupport {
    private AgentClient client;
    private List<Registration> registrations;
    private String service;

    // *************************************************************************
    // Setup / tear down
    // *************************************************************************

    @Override
    public void doPreSetup() throws Exception {
        super.doPreSetup();

        Random random = new Random();

        this.service = UUID.randomUUID().toString();
        this.client = getConsul().agentClient();
        this.registrations = Arrays.asList(
            ImmutableRegistration.builder()
                .id(UUID.randomUUID().toString())
                .name(this.service)
                .address("127.0.0.1")
                .port(random.nextInt(10000))
                .build(),
            ImmutableRegistration.builder()
                .id(UUID.randomUUID().toString())
                .name(this.service)
                .address("127.0.0.1")
                .port(random.nextInt(10000))
                .build()
        );

        this.registrations.forEach(client::register);
    }

    @Override
    public void doPostTearDown() throws Exception {
        super.doPostTearDown();

        registrations.forEach(r -> client.deregister(r.getId()));
    }

    // *************************************************************************
    // Test
    // *************************************************************************

    @Test
    public void testServiceInstance() throws Exception {
        List<ServiceHealth> ref = getConsul().healthClient().getAllServiceInstances(this.service).getResponse();
        List<ServiceHealth> res = fluentTemplate()
            .withHeader(ConsulConstants.CONSUL_ACTION, ConsulHealthActions.SERVICE_INSTANCES)
            .withHeader(ConsulConstants.CONSUL_SERVICE, this.service)
            .to("direct:consul")
            .request(List.class);

        Assert.assertEquals(2, ref.size());
        Assert.assertEquals(2, res.size());
        Assert.assertEquals(ref, res);

        assertTrue(registrations.stream().anyMatch(
            r -> r.getPort().isPresent() && r.getPort().get() == res.get(0).getService().getPort() && r.getId().equalsIgnoreCase(res.get(0).getService().getId())
        ));
        assertTrue(registrations.stream().anyMatch(
            r -> r.getPort().isPresent() && r.getPort().get() == res.get(1).getService().getPort() && r.getId().equalsIgnoreCase(res.get(1).getService().getId())
        ));
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            public void configure() {
                from("direct:consul")
                    .to("consul:health");
            }
        };
    }
}