components/camel-test-blueprint/src/test/java/org/apache/camel/test/blueprint/SupervisingRouteControllerTest.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.test.blueprint;

import java.util.Map;
import java.util.concurrent.TimeUnit;

import org.apache.camel.Consumer;
import org.apache.camel.Endpoint;
import org.apache.camel.Processor;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.component.seda.SedaComponent;
import org.apache.camel.component.seda.SedaConsumer;
import org.apache.camel.component.seda.SedaEndpoint;
import org.apache.camel.spi.SupervisingRouteController;
import org.junit.Test;

public class SupervisingRouteControllerTest extends CamelBlueprintTestSupport {

    @Override
    protected String getBlueprintDescriptor() {
        return "org/apache/camel/test/blueprint/BlueprintSupervisingRouteControllerTest.xml";
    }

    @Test
    public void testSupervising() throws Exception {
        MockEndpoint mock = context.getEndpoint("mock:foo", MockEndpoint.class);
        mock.expectedMinimumMessageCount(3);

        MockEndpoint mock2 = context.getEndpoint("mock:cheese", MockEndpoint.class);
        mock2.expectedMessageCount(0);

        MockEndpoint mock3 = context.getEndpoint("mock:cake", MockEndpoint.class);
        mock3.expectedMessageCount(0);

        MockEndpoint mock4 = context.getEndpoint("mock:bar", MockEndpoint.class);
        mock4.expectedMessageCount(0);

        MockEndpoint.assertIsSatisfied(5, TimeUnit.SECONDS, mock, mock2, mock3, mock4);

        assertEquals("Started", context.getRouteController().getRouteStatus("foo").toString());
        // cheese was not able to start
        assertEquals("Stopped", context.getRouteController().getRouteStatus("cheese").toString());
        // cake was not able to start
        assertEquals("Stopped", context.getRouteController().getRouteStatus("cake").toString());

        SupervisingRouteController src = context.getRouteController().adapt(SupervisingRouteController.class);

        Throwable e = src.getRestartException("cake");
        assertNotNull(e);
        assertEquals("Cannot start", e.getMessage());
        assertTrue(e instanceof IllegalArgumentException);

        // bar is no auto startup
        assertEquals("Stopped", context.getRouteController().getRouteStatus("bar").toString());
    }

    public static class MyJmsComponent extends SedaComponent {

        @Override
        protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
            return new MyJmsEndpoint(remaining);
        }
    }

    public static  class MyJmsEndpoint extends SedaEndpoint {

        private String name;

        public MyJmsEndpoint(String name) {
            super();
            this.name = name;
        }

        @Override
        public Consumer createConsumer(Processor processor) throws Exception {
            return new MyJmsConsumer(this, processor);
        }

        @Override
        protected String createEndpointUri() {
            return "jms:" + name;
        }
    }

    public static  class MyJmsConsumer extends SedaConsumer {

        private int counter;

        public MyJmsConsumer(SedaEndpoint endpoint, Processor processor) {
            super(endpoint, processor);
        }

        @Override
        protected void doStart() throws Exception {
            if (counter++ < 5) {
                throw new IllegalArgumentException("Cannot start");
            }
        }
    }

}