routes-configuration/src/main/java/sample/camel/MyJavaRouteBuilder.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 sample.camel;

import java.util.Random;
import org.apache.camel.builder.RouteBuilder;
import org.springframework.stereotype.Component;

// Use @Component to let spring boot discover this class automatic
@Component
public class MyJavaRouteBuilder extends RouteBuilder {

    @Override
    public void configure() throws Exception {
        from("timer:java?period=2s")
            // refer to the route configuration by the id to use for this route
            .routeConfigurationId("javaError")
            .setBody(method(MyJavaRouteBuilder.class, "randomNumber"))
            .log("Random number ${body}")
            .filter(simple("${body} < 30"))
                .throwException(new IllegalArgumentException("The number is too low"));
    }

    public static int randomNumber() {
        return new Random().nextInt(100);
    }
}